Double-layer liquid storage spherical tank

Abstract

The present invention provides a double-layer liquid storage spherical tank. The double-layer liquid storage spherical tank includes an inner spherical tank, an outer spherical tank, multiple support columns, multiple inner reinforcing plates and multiple outer supporting plates. Among them, each inner reinforcing plate is fixedly attached to the inner peripheral wall of the inner spherical tank, and the fixing holes of the inner reinforcing plates are fixedly connected to the support columns in a sealed manner to enhance the connection strength between the support columns and the outer spherical tank. The outer supporting plates are located below the connection between the support columns and the outer spherical tank. One end of the outer supporting plate is connected to the support column, and the other end supports the bottom of the outer spherical tank. The outer supporting plates are transversely connected to the support columns and the outer spherical tank respectively to play a strengthening role and reduce the stress at the connection between the support columns and the outer spherical tank. The structure of the above double-layer liquid storage spherical tank is designed to be strengthened to ensure the stability of the connection between the support columns and the outer spherical tank, guarantee the sealing performance of the double-layer spherical tank, and eliminate the risk factors of safety accidents caused by medium leakage.

Description

Technical Field

[0001] The present invention relates to the technical field of storage tanks for dangerous liquefied media, and particularly to a double-layer liquid storage spherical tank. Background Art

[0002] As a large-capacity and pressure-bearing spherical storage container, spherical tanks are widely used in the fields of petroleum, chemical industry, metallurgy, etc. Spherical tanks can be used as storage containers for liquefied petroleum gas, liquid ammonia, and other media.

[0003] A spherical tank mainly includes a spherical tank body and support columns. The spherical tank body is the main component that bears the pressure of the material, and the support columns are components used to support the total weight of the spherical tank body and the material. The existing common single-layer spherical shell spherical tank for storing highly dangerous media is prone to medium leakage during its production, use, and storage, and there are risk factors that may cause safety accidents. Summary of the Invention

[0004] The purpose of the present invention is to provide a double-layer liquid storage spherical tank to ensure the product quality and sealing performance of the spherical tank.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A double-layer liquid storage spherical tank, comprising: an inner spherical tank for storing a medium; an outer spherical tank that wraps the inner spherical tank from the outside, a sandwich layer is formed between the outer spherical tank and the inner spherical tank, and a plurality of openings are circumferentially formed at the bottom of the outer spherical tank; a plurality of support columns that are respectively inserted into the openings and extend upward to be fixedly connected to the outer peripheral wall of the inner spherical tank; a plurality of inner reinforcing plates that are respectively arranged corresponding to the support columns, a fixing hole for the support column to pass through is formed in the middle of each inner reinforcing plate, the inner reinforcing plate is in a curved surface shape and can be fixedly attached to the inner peripheral wall of the outer spherical tank, and the outer peripheral edge of the support column and the inner peripheral edge of the fixing hole are in sealed connection; a plurality of outer support plates that are respectively arranged on the support columns, the outer support plate is located below the connection between the support column and the outer spherical tank, one end of the outer support plate is horizontally connected to the support column, and the other end has a curved surface adapted to the outer peripheral wall of the outer spherical tank, so as to upwardly support the bottom of the outer spherical tank.

[0007] According to an embodiment of the present invention, the inner reinforcing plate is circular; the fixing hole is arranged at the center of the inner reinforcing plate, and the inner peripheral edge of the fixing hole and the outer peripheral edge of the support column are in circumferential seam welding.

[0008] According to an embodiment of the present invention, the size of the opening is slightly larger than the size of the support column; the inner peripheral edge of the opening and the outer peripheral edge of the support column are in circumferential seam welding.

[0009] According to an embodiment of the present invention, the outer supporting plate includes two side plates arranged oppositely and a bending plate connected between the two side plates. The two side plates and the bending plate are connected to form a U-shaped structure with an upward opening; one end of the side plate in the transverse direction has a first curved surface that fits the peripheral wall of the outer spherical tank, and there is an included angle between the first curved surface and the horizontal plane. The other side of the side plate is welded and fixed to the support column in the vertical direction.

[0010] According to an embodiment of the present invention, the cross-section of the bending plate is semi-circular; one end of the bending plate in the transverse direction also has a second curved surface that is continuously connected to the first curved surface to jointly fit on the outer peripheral wall of the outer spherical tank, and the other end of the bending plate has a radian that fits the outer periphery of the support column.

[0011] According to an embodiment of the present invention, a through hole is provided at the bottom of the bending plate.

[0012] According to an embodiment of the present invention, it further includes a top support structure; the top support structure is vertically located in the interlayer, one end of the top support structure is fixedly connected to the top of the inner spherical tank, and the other end is upwardly supported and fixed to the inner wall of the outer spherical tank.

[0013] According to an embodiment of the present invention, the top support structure includes a manhole cylinder and a support cone cylinder; the manhole cylinder is in a straight cylinder shape, the upper opening of the manhole cylinder is correspondingly connected to the manhole at the top of the outer spherical tank, and the lower opening of the manhole cylinder is connected and communicated with the upper opening of the support cone cylinder; the support cone cylinder is in a conical shape, the cross-sectional area of the support cone cylinder gradually increases in the downward direction, and the lower end of the support cone cylinder is connected to the top of the inner spherical tank and is correspondingly arranged with the manhole at the top of the inner spherical tank.

[0014] According to an embodiment of the present invention, the top support structure further includes a ladder; the ladder is installed inside the manhole cylinder.

[0015] According to an embodiment of the present invention, it further includes a plurality of inner support plates; each inner support plate is correspondingly arranged at the upper end of the support column and is located below the connection between the support column and the inner spherical tank. One end of the inner support plate is connected to the support column in the transverse direction, and the other end has a curved surface that fits the outer peripheral wall of the inner support plate, so as to upwardly support the bottom of the inner spherical tank.

[0016] It can be seen from the above technical solutions that a double-layer liquid storage spherical tank provided by the present invention has at least the following advantages and positive effects:

[0017] The double-layer liquid storage spherical tank includes an inner spherical tank, an outer spherical tank, multiple support columns, multiple inner reinforcement plates and multiple outer support plates. Among them, each inner reinforcement plate is fixedly attached to the inner peripheral wall of the inner spherical tank, and the fixing holes of the inner reinforcement plates are fixedly connected to the support columns in a sealed manner to strengthen the connection strength between the support columns and the outer spherical tank. The outer support plate is located below the connection between the support column and the outer spherical tank. One end of the outer support plate is connected to the support column, and the other end supports the bottom of the outer spherical tank. The outer support plate is connected to the support column and the outer spherical tank respectively in the horizontal direction to play a strengthening role and reduce the stress at the connection between the support column and the outer spherical tank. The structure of the above double-layer liquid storage spherical tank is designed to be strengthened to ensure the stability of the connection between the support column and the outer spherical tank, guarantee the tightness of the interlayer of the double-layer spherical tank, avoid the leakage of the medium, and eliminate the risk factors of safety accidents caused by the leakage of the medium. Brief Description of the Drawings

[0018] Figure 1 It is the front view of the double-layer liquid storage spherical tank in the embodiment of the present invention.

[0019] Figure 2 It is the top view of the double-layer liquid storage spherical tank in the embodiment of the present invention.

[0020] Figure 3 It is the schematic diagram of the connection between the support column and the inner spherical tank in the embodiment of the present invention.

[0021] Figure 4 It is Figure 3 the sectional view taken along the A-A direction of

[0022] Figure 5 It is Figure 3 the sectional view taken along the B-B direction of

[0023] Figure 6 It is the schematic diagram of the connection between the support column and the outer spherical tank.

[0024] Figure 7 It is the front view of the outer support plate in the embodiment of the present invention.

[0025] Figure 8 It is the side view of the outer support plate in the embodiment of the present invention.

[0026] Figure 9 It is Figure 7 the sectional view taken along the C-C direction of

[0027] Figure 10 It is the schematic diagram of the connection between the outer support plate and the support column in the embodiment of the present invention.

[0028] The descriptions of the reference numerals are as follows: 100 - double - layer liquid storage spherical tank; 101 - interlayer; 1 - inner spherical tank; 2 - outer spherical tank; 201 - opening; 203 - gas collection outlet; 3 - support column; 4 - inner reinforcement plate; 401 - fixing hole; 5 - outer support plate; 51 - side plate; S1 - first curved surface; 501 - notch; 53 - bending plate; S2 - second curved surface; 531 - through - hole; 6 - inner support plate; 7 - top support structure; 71 - manhole cylinder; 73 - support conical cylinder; 75 - ladder. Detailed implementation manners

[0029] Typical implementation manners that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different implementation manners, all of which do not depart from the scope of the present invention, and the descriptions and illustrations therein are for illustrative purposes in essence, rather than to limit the present invention.

[0030] An embodiment of the present invention provides a double - layer liquid storage spherical tank, which includes an inner spherical tank, an outer spherical tank, multiple support columns, multiple inner reinforcement plates, and multiple outer support plates. Among them, the inner spherical tank is used for storing media; the outer spherical tank wraps the inner spherical tank from the outside, and an interlayer is formed between the outer spherical tank and the inner spherical tank. A plurality of openings are circumferentially formed at the bottom of the outer spherical tank for the support columns to pass through. The multiple support columns are inserted into the openings one by one and extend upward to be fixedly connected to the outer peripheral wall of the inner spherical tank. The multiple inner reinforcement plates are correspondingly arranged with the support columns one by one. A fixing hole for the support column to pass through is formed in the middle of each inner reinforcement plate. The inner reinforcement plate is in a curved shape and can be fixedly attached to the inner peripheral wall of the outer spherical tank. The outer peripheral edge of the support column and the inner peripheral edge of the fixing hole are in a sealed connection. The multiple outer support plates are correspondingly arranged on the support columns. The outer support plate is located below the connection between the support column and the outer spherical tank. One end of the outer support plate is connected to the support column horizontally, and the other end has a curved surface adapted to the outer peripheral wall of the outer spherical tank, so as to upwardly support the bottom of the outer spherical tank.

[0031] The above - mentioned double - layer liquid storage spherical tank increases the connection strength between the support column and the outer spherical tank through the inner reinforcement plate and the outer support plate, ensures the stability of the connection part, guarantees the sealing performance of the spherical tank, avoids the leakage of the medium, and reduces the risk of safety accidents.

[0032] Please refer to Figure 1 and Figure 2 , which shows that the double - layer liquid storage spherical tank 100 mainly includes an inner spherical tank 1, an outer spherical tank 2, multiple support columns 3, multiple inner reinforcement plates 4, and multiple outer support plates 5.

[0033] The inner spherical tank 1 is used for storing media and is usually made of low - alloy steel material.

[0034] The outer spherical tank 2 wraps the inner spherical tank 1 from the outside, and an interlayer 101 is formed between the outer spherical tank 2 and the inner spherical tank 1. A plurality of openings 201 are circumferentially formed at the bottom of the outer spherical tank 2 for the support columns 3 to pass through. A gas collection outlet 203 is provided at the lowest point of the bottom of the outer spherical tank 2.

[0035] Multiple struts 3 are inserted into the openings 201 one by one, and extend upward to be connected and fixed to the outer peripheral wall of the inner spherical tank 1. The size of the opening 201 is slightly larger than that of the strut 3; the inner peripheral edge of the opening 201 and the outer peripheral edge of the strut 3 are welded by circumferential seam. The multiple struts 3 are fixed by intersecting connecting rods to ensure the connection and fixation of all the struts 3 and the outer spherical tank 2.

[0036] Please refer to Figures 3 to 5 , the upper end of the strut 3 is tangent to the outer side wall of the equatorial plate of the inner spherical tank 1 and is welded and fixed, so as to support the total weight of the inner spherical tank 1 and the stored liquid. A plurality of inner supporting plates 6 are provided at the upper ends of the respective struts 3 one by one, and are located below the connection between the strut 3 and the inner spherical tank 1. One end of the inner supporting plate 6 is connected to the strut 3 in the transverse direction, and the other end has a curved surface adapted to the outer peripheral wall of the inner supporting plate 6, so as to upwardly support the bottom of the inner spherical tank 1. The inner supporting plate 6 is used to strengthen the connection between the strut 3 and the inner spherical tank 1 from the outside of the inner spherical tank 1. It should be noted that the structure of the inner supporting plate 6 is similar to that of the outer supporting plate 5, and the specific structure of the outer supporting plate 5 will be described in the appendix Figure 7 below. During the construction process of the double-layer liquid storage spherical tank 100, after the inner spherical tank 1 is assembled, the outer spherical tank 2 is fixedly installed and formed by group welding with the strut 3 and the top support structure 7.

[0037] Please refer to Figure 6 , a plurality of inner reinforcing plates 4 are arranged corresponding to the struts 3 one by one. The inner reinforcing plates 4 are located in the interlayer 101 and are attached to the inner peripheral wall of the outer spherical tank 2, and are used to strengthen the connection between the strut 3 and the outer spherical tank 2 from the inside of the outer spherical tank 2.

[0038] Specifically, a fixing hole 401 for the strut 3 to pass through is provided in the middle of each inner reinforcing plate 4. The inner peripheral edge of the fixing hole 401 and the outer peripheral edge of the strut 3 are hermetically connected. The inner reinforcing plate 4 is in a curved surface shape and can be adaptively attached to the inner peripheral wall of the outer spherical tank 2.

[0039] Preferably, the inner reinforcing plate 4 is circular. The fixing hole 401 is provided at the center of the inner reinforcing plate 4, and the inner peripheral edge of the fixing hole 401 and the outer peripheral edge of the strut 3 are welded by circumferential seam. The outer peripheral edge of the inner reinforcing plate 4 and the inner peripheral wall of the outer spherical tank 2 are also welded by circumferential seam. In this way, the inner reinforcing plate 4 can disperse the relatively large stress at the connection between the strut 3 and the opening 201 of the outer spherical tank 2, reduce the stress concentration, and ensure the reliability of the welding quality of the strut 3 and the outer spherical tank 2.

[0040] Please refer to Figures 7 to 10, a plurality of outer supporting plates 5 are respectively arranged on the columns 3 one by one. Each outer supporting plate 5 is located below the connection between the column 3 and the outer spherical tank 2. One end of the outer supporting plate 5 is connected to the column 3 in the transverse direction, and the other end has a curved surface adapted to the outer peripheral wall of the outer spherical tank 2, so as to upwardly support the bottom of the outer spherical tank 2. The outer supporting plate 5 is used to strengthen the connection between the column 3 and the outer spherical tank 2 from the outside of the outer spherical tank 2.

[0041] The outer supporting plate 5 includes two side plates 51 arranged oppositely and a bending plate 53 connected between the two side plates 51. The two side plates 51 and the bending plate 53 are connected to form a U-shaped structure with an upward opening. The two side plates 51 are symmetric structures and are integrally formed with the bending plate 53.

[0042] For more intuitive illustration, with Figure 7 the view direction as a reference, the left end of the side plate 51 in the transverse direction has a first curved surface S1 that fits the peripheral wall of the outer spherical tank 2, and there is an angle between the first curved surface S1 and the horizontal plane. The right end of the side plate 51 is welded and fixed to the column 3 in the vertical direction. A notch 501 is provided at one corner of the lower end of the side plate 51 to avoid welding difficulties due to too small an angle when welding with the column 3.

[0043] The cross-section of the bending plate 53 is semi-circular. The connection between the bending plate 53 and the side plate 51 is in an arc transition. The left end of the bending plate 53 in the transverse direction also has a second curved surface S2 that is continuously connected to the first curved surface S1. The first curved surface S1 and the second curved surface S2 jointly fit on the outer peripheral wall of the outer spherical tank 2. The other end of the bending plate 53 has a curvature adapted to fit the outer periphery of the column 3. A through hole 531 is provided at the bottom of the bending plate 53 to avoid stress concentration.

[0044] The top support structure 7 is vertically located in the interlayer 101 and is arranged on the top of the inner spherical tank 1. One end of the top support structure 7 is fixedly connected to the top of the inner spherical tank 1, and the other end is upwardly supported and fixed to the inner wall of the outer spherical tank 2. A ladder 75 and a manhole passage are provided inside the top support structure 7, and this support structure can be used as a passage for personnel to enter and exit.

[0045] Specifically, the top support structure 7 includes a manhole cylinder 71, a support cone cylinder 73 and a ladder 75.

[0046] The manhole cylinder 71 is in a straight cylinder shape. The upper end opening of the manhole cylinder 71 is correspondingly connected to the manhole at the top of the outer spherical tank 2, and the lower end opening of the manhole cylinder 71 is connected and communicated with the upper end opening of the support cone cylinder 73. The ladder 75 is erected inside the manhole cylinder 71 for the staff to enter and exit.

[0047] The support cone cylinder 73 is in a conical shape. The cross-sectional area of the support cone cylinder 73 gradually increases in the downward direction. The lower end of the support cone cylinder 73 is connected to the top of the inner spherical tank 1 and is correspondingly arranged with the manhole at the top of the inner spherical tank 1.

[0048] In summary, the double-layer liquid storage spherical tank 100 provided by the present invention has at least the following advantages and positive effects:

[0049] The double-layer liquid storage spherical tank 100 includes an inner spherical tank 1, an outer spherical tank 2, multiple support columns 3, multiple inner reinforcing plates 4, and multiple outer support plates 5. Among them, each inner reinforcing plate 4 is fixedly attached to the inner peripheral wall of the inner spherical tank 1, and the fixing holes 401 of the inner reinforcing plates 4 are fixedly connected to the support columns 3 in a sealed manner to enhance the connection strength between the support columns 3 and the outer spherical tank 2. The outer support plate 5 is located below the connection between the support column 3 and the outer spherical tank 2. One end of the outer support plate 5 is connected to the support column 3, and the other end supports the bottom of the outer spherical tank 2. The outer support plate 5 is transversely connected to the support column 3 and the outer spherical tank 2 respectively to play a strengthening role and reduce the stress at the connection between the support column 3 and the outer spherical tank 2. The structure of the double-layer liquid storage spherical tank 100 described above is designed to be strengthened to ensure the stability of the connection between the support column 3 and the outer spherical tank 2, guarantee the sealing performance of the interlayer 101 of the double-layer spherical tank, avoid the leakage of the medium, and eliminate the risk factors of safety accidents caused by the leakage of the medium.

[0050] Although the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A double-layer liquid storage spherical tank, characterized in that Comprising: An inner spherical tank for storing hazardous liquefied medium; An outer spherical tank that wraps the inner spherical tank from the outside. A sandwich layer is formed between the outer spherical tank and the inner spherical tank. A plurality of openings are circumferentially formed at the bottom of the outer spherical tank; A plurality of support columns, each of which is inserted into one of the openings correspondingly and extends upward to be fixedly connected to the outer peripheral wall of the inner spherical tank; A plurality of inner reinforcing plates, each of which is correspondingly arranged with one of the support columns. A fixing hole for the support column to pass through is formed in the middle of each inner reinforcing plate. The inner reinforcing plate is in a curved surface shape and can be fixedly attached to the inner peripheral wall of the outer spherical tank. The outer peripheral edge of the support column and the inner peripheral edge of the fixing hole are in sealed connection; the inner reinforcing plate is circular; the fixing hole is arranged at the center of the circle of the inner reinforcing plate; the outer peripheral edge of the inner reinforcing plate and the inner peripheral wall of the outer spherical tank are welded by circumferential seam; A plurality of outer supporting plates, each of which is correspondingly arranged on one of the support columns. The outer supporting plate is located below the connection between the support column and the outer spherical tank. One end of the outer supporting plate is connected to the support column horizontally, and the other end has a curved surface adapted to the outer peripheral wall of the outer spherical tank, so as to upwardly support the bottom of the outer spherical tank; the outer supporting plate includes two side plates arranged oppositely and a bending plate connected between the two side plates. One end of the side plate in the horizontal direction has a first curved surface that fits the peripheral wall of the outer spherical tank, and an angle is formed between the first curved surface and the horizontal plane; the cross section of the bending plate is semi-circular; one end of the bending plate in the horizontal direction also has a second curved surface that is continuously connected to the first curved surface to jointly fit on the outer peripheral wall of the outer spherical tank, and the other end of the bending plate has a radian adapted to fit the outer periphery of the support column.

2. The double-layer liquid storage spherical tank according to claim 1, characterized in that: The inner peripheral edge of the fixing hole and the outer peripheral edge of the support column are welded by circumferential seam.

3. The double-layer liquid storage spherical tank according to claim 1, characterized in that: The size of the opening is slightly larger than the size of the support column; The inner peripheral edge of the opening and the outer peripheral edge of the support column are welded by circumferential seam.

4. The double-layer liquid storage spherical tank according to claim 1, characterized in that: The two side plates and the bending plate are connected to form a U-shaped structure with an upward opening; The other side of the side plate is welded and fixed to the support column in the vertical direction.

5. The double-layer liquid storage spherical tank according to claim 4, characterized in that: A through hole is formed at the bottom of the bending plate.

6. The double-layer liquid storage spherical tank according to claim 1, characterized in that: It further includes a top support structure; The top support structure is vertically located in the sandwich layer. One end of the top support structure is fixedly connected to the top of the inner spherical tank, and the other end is upwardly supported and fixed to the inner wall of the outer spherical tank.

7. The double-layer liquid storage spherical tank according to claim 6, characterized in that: The top support structure includes a manhole cylinder and a support cone cylinder; The manhole cylinder is in a straight cylinder shape. The upper opening of the manhole cylinder is correspondingly connected to the manhole at the top of the outer spherical tank, and the lower opening of the manhole cylinder is connected and communicated with the upper opening of the support conical cylinder; the support conical cylinder is in a conical shape, and the cross-sectional area of the support conical cylinder gradually increases in the downward direction. The lower end of the support conical cylinder is connected to the top of the inner spherical tank and is correspondingly arranged with the manhole at the top of the inner spherical tank.

8. The double-layer liquid storage spherical tank according to claim 7, wherein: The top support structure further includes a ladder; The ladder is installed inside the manhole cylinder.

9. The double-layer liquid storage spherical tank according to any one of claims 1-8, wherein: It further includes a plurality of inner support plates; Each of the inner support plates is correspondingly arranged at the upper end of the support column and is located below the connection between the support column and the inner spherical tank. One end of the inner support plate is connected to the support column in the transverse direction, and the other end has a curved surface adapted to the outer peripheral wall of the inner spherical tank, so as to upwardly support the bottom of the inner spherical tank.

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