Spherical storage tank insulation structure and installation method thereof

Abstract

The present invention discloses a spherical storage tank insulation structure and an installation method thereof, which relates to a spherical storage tank insulation structure, comprising: a frame structure for covering the spherical storage tank, comprising a plurality of warp fixing straps and a plurality of weft fixing straps; a plurality of support members disposed between the frame structure and the spherical storage tank, the ends of the support members respectively abutting against the frame structure and the spherical storage tank to form a gap therebetween; a thermal insulation layer comprising a plurality of thermal insulation blocks disposed in the gap; and an outer protective layer connected to the frame structure, the outer protective layer covering the outer side of the frame structure and the thermal insulation layer. This application can ensure the thermal insulation effect of the spherical storage tank while ensuring that the thermal insulation layer and the outer protective layer do not deform, and is detachable and reusable, reducing the impact on the re-inspection of the spherical shell weld.

Description

Technical Field

[0001] The invention relates to the field of storage tanks, and in particular to a spherical storage tank insulation structure and an installation method thereof. Background Art

[0002] With the rapid development of my country's steel industry and the replacement of production capacity, steelmaking converters have gradually become larger, and large-scale spherical heat accumulators have been widely used in the corresponding vaporization cooling systems. Compared with other storage tanks of the same volume, spherical heat accumulators of the spherical storage tank type have the advantages of small footprint, less steel consumption, and small surface area. Since the spherical heat accumulator stores saturated water vapor and has a high operating temperature, the outside of the tank needs to be insulated to reduce heat loss. Spherical insulation is more difficult than that of conventional cylindrical containers. Therefore, the quality of the insulation structure directly affects the insulation effect and appearance. Spherical heat accumulators belong to the third category of pressure vessels. During use, the spherical shell welds need to be regularly inspected, and the insulation structure covering the outside must also be removed and re-covered.

[0003] One existing method uses insulation nails to secure the insulation layer. In this method, the spherical tank's insulation structure consists of a spherical frame layer, a spherical insulation layer, insulation nails, and a spherical protective layer. The spherical frame layer is applied to the outer surface of the spherical tank shell. The spherical frame layer is made of interwoven weft and warp strips, with insulation nails positioned on the outer surfaces of the warp and weft strips. The insulation layer is secured to the outer surface of the spherical frame layer, while the protective layer is secured to the outer surface of the insulation layer. The insulation layer is primarily secured by the insulation nails. The above method has many disadvantages. For example, the spherical frame layer structure formed by welding the warp and weft bars is covered on the outer surface of the spherical shell, which is very inconvenient for the subsequent weld quality inspection and insulation structure disassembly of the spherical storage tank. Destructive disassembly can only be adopted, and the insulation structure is not highly available; the warp bars are welded on the weft bars in a segmented structure, which is not conducive to the insulation and load-bearing capacity of the lower half of the spherical storage tank; the spherical protective layer is directly covered on the insulation layer without internal structural support, and tends to become an ellipsoid under the action of gravity; the insulation nails on the outer surface of the warp and weft bars are dense, which is not conducive to wrapping the heavy insulation layer.

[0004] Whether the insulation nails are welded directly to the spherical tank or welded to the tank's surface frame, not only does this increase the workload for tank inspections, but it also increases the effort required to remove the insulation structure for re-inspection of the shell welds. Furthermore, the insulation structure cannot be reused. The outer protective layer is directly attached to the insulation layer. Over long-term operation, this can cause the upper hemisphere of the spherical tank's insulation to collapse, while the lower hemisphere drags. This can also cause the overall outer insulation structure to deform, compromising both insulation effectiveness and aesthetics. Therefore, a new spherical tank insulation structure is needed to address at least one of these issues. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a spherical tank insulation structure and an installation method thereof, which can ensure the insulation effect of the spherical storage tank while ensuring that the insulation layer and the outer protective layer are not deformed, and are detachable and reusable, reducing the impact on the re-inspection of the spherical shell weld operation.

[0006] The specific technical solution of the embodiment of the present invention is:

[0007] A spherical storage tank insulation structure, comprising:

[0008] A frame structure for covering a spherical storage tank, comprising a plurality of warp fixing straps and a plurality of weft fixing straps;

[0009] a plurality of support members disposed between the frame structure and the spherical storage tank, wherein one end of the support member is connected to the frame structure, and the other end of the support member abuts against the spherical storage tank to form a gap therebetween;

[0010] a heat-insulating layer comprising a plurality of heat-insulating blocks arranged in the gap;

[0011] An outer protective layer connected to the frame structure, the outer protective layer covering the outer side of the frame structure and the thermal insulation layer.

[0012] Preferably, the frame structure also includes two fixing ring mechanisms located at the top and bottom of the spherical storage tank, the fixing ring mechanisms are sleeved on the manhole neck of the spherical storage tank, and the two ends of the warp fixing belt are respectively connected to the two fixing ring mechanisms at the top and bottom of the spherical storage tank.

[0013] Preferably, the fixing ring mechanism includes a fixing ring having two semicircular rings, the two semicircular rings are connected by bolts, a plurality of connecting holes are opened on the outer side of the fixing ring along the circumferential direction, the warp fixing belt is connected to the fixing ring by a pull ring passing through the connecting hole, and the pull ring and the warp fixing belt are connected by bolts.

[0014] Preferably, the intersection of the weft fixing belt and the warp fixing belt has a curved portion recessed toward one side of the spherical storage tank, and the warp fixing belt passes through the curved portion to make the outer sides of the weft fixing belt and the warp fixing belt smooth.

[0015] Preferably, the intersection of the warp fixing belt and the weft fixing belt is connected by countersunk bolts to make the outer side of the warp fixing belt smooth.

[0016] Preferably, one of the warp thread fixing belts is divided into two sections, and opposite ends of the two sections of the warp thread fixing belts are connected by an adjustable bolt.

[0017] Preferably, the opposite ends of the two sections of the warp fixing belts are respectively connected to a first guide connecting seat with a through hole and a second guide connecting seat with a through hole, and the adjustable bolt passes through the through holes of the first guide connecting seat and the second guide connecting seat to align the two sections of the warp fixing belts.

[0018] Preferably, the outer protective layer comprises a plurality of outer protective plates, and the outer protective plates are fixed to the warp fixing belt and / or the weft fixing belt by means of blind rivets.

[0019] Preferably, a wire body is connected between adjacent warp fixing belts and / or adjacent weft fixing belts, and the wire body is used to bind the insulation block so that the insulation block is close to the spherical storage tank.

[0020] A method for installing any of the above-mentioned spherical storage tank insulation structures comprises:

[0021] A frame structure covering the spherical storage tank is installed on the outer surface of the spherical storage tank, wherein the warp fixing belts and the weft fixing belts in the frame structure are connected by bolts;

[0022] A support member is provided between the frame structure and the spherical storage tank, with two ends of the support member respectively pressing against the frame structure and the spherical storage tank to form a gap therebetween;

[0023] Installing multiple insulation blocks into the gaps between the warp fixing belts and the weft fixing belts, and fixing them with wires connected to adjacent warp fixing belts and / or adjacent weft fixing belts, so that the insulation blocks are close to the spherical storage tank;

[0024] A plurality of outer protection plates are fixed on the warp fixing belt and / or the weft fixing belt by means of blind rivets to form an outer protection layer.

[0025] The technical solution of the present invention has the following significant beneficial effects:

[0026] The spherical storage tank insulation structure in the present application forms a gap between the frame structure and the spherical storage tank through the support member, and the insulation layer is set in the gap between the frame structure and the spherical storage tank. The insulation layer is fixed by the outer frame structure. At the same time, the outer protective layer is also connected to the frame structure. The above method can effectively ensure that the insulation layer and the outer protective layer will not be deformed by gravity. There is no welding between the frame structure and the spherical storage tank, avoiding the adverse effects of welding. In addition, while meeting the insulation requirements of the spherical storage tank, the appearance of the insulation structure can be ensured. Moreover, the spherical storage tank insulation structure is detachable and reusable, which is very beneficial for the insulation of pressure spherical storage tanks with regular re-inspection of welds.

[0027] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope thereby. Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the drawings are merely illustrative and are used to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances under the guidance of the present invention.

[0029] Figure 1 This is a schematic structural diagram of the frame structure in the spherical storage tank insulation structure according to an embodiment of the present invention;

[0030] Figure 2 A partial cross-sectional view of a spherical storage tank insulation structure according to an embodiment of the present invention;

[0031] Figure 3 is a top view of the fixing ring mechanism in an embodiment of the present invention;

[0032] Figure 4 It is a front view of the fixing ring mechanism in an embodiment of the present invention;

[0033] Figure 5 Schematic diagram of the structure of the connection between the warp fixing belt and the weft fixing belt in an embodiment of the present invention.

[0034] Reference numerals in the above drawings:

[0035] 1. Support member; 2. Frame structure; 21. Warp fixing belt; 211. Adjustable bolt; 212. First guide connecting seat; 213. Second guide connecting seat; 22. Weft fixing belt; 221. Bending portion; 23. Fixing ring mechanism; 231. Fixing ring; 2311. Connecting hole; 2312. Annular belt; 2313. Bottom plate; 232. Pull ring; 24. Countersunk bolt; 3. Insulation layer; 4. Outer protective layer; 5. Spherical storage tank; 51. Manhole. DETAILED DESCRIPTION

[0036] The details of the present invention can be more clearly understood in conjunction with the accompanying drawings and the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are for illustrative purposes only and are not to be construed as limiting the present invention in any way. Based on the teachings of the present invention, skilled artisans can conceive of any possible variations based on the present invention, all of which should be considered within the scope of the present invention. It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there can be an intermediate element. The terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, internal communication between two elements, direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms based on the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are intended only to describe specific embodiments and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] In order to ensure the thermal insulation effect of the spherical storage tank while ensuring that the thermal insulation layer and the outer protective layer are not deformed, and have detachability and reusability, and reduce the impact on the re-inspection of the spherical shell weld operation, a spherical storage tank insulation structure is proposed in this application. Figure 1 This is a schematic structural diagram of the frame structure in the spherical storage tank insulation structure according to an embodiment of the present invention. Figure 2 FIG. 1 is a partial cross-sectional view of the spherical storage tank insulation structure according to an embodiment of the present invention. Figure 1 and Figure 2 As shown, the spherical storage tank insulation structure may include: a frame structure 2 for covering the spherical storage tank 5, which includes a plurality of warp fixing belts 21 and a plurality of weft fixing belts 22, and the warp fixing belts 21 and the weft fixing belts 22 are intersected and connected to form a spherical outline; a plurality of support members 1 arranged between the frame structure 2 and the spherical storage tank 5, one end of the support member 1 is connected to the frame structure 2, and the other end of the support member 1 is against the spherical storage tank 5 to form a gap between the two; an insulation layer 3, including a plurality of insulation blocks arranged in the gap; an outer protective layer 4 connected to the frame structure 2, the outer protective layer 4 covering the outside of the frame structure 2 and covering the insulation layer 3.

[0039] like Figure 1 As shown, the spherical storage tank insulation structure in the present application adopts a frame structure 2, which is used to cover the spherical storage tank 5. The frame structure 2 includes a plurality of warp fixing belts 21 and a plurality of weft fixing belts 22. The curvature of the warp fixing belts 21 and the weft fixing belts 22 can be basically consistent with the curvature of the outer wall of the spherical storage tank 5, so that insulation blocks of exactly the same thickness can be installed in the gap to avoid the insulation blocks from shaking in the radial direction. In addition, the roundness and surface appearance of the outer protective layer 4 can be ensured. The warp fixing belts 21 are evenly distributed along the equator of the spherical storage tank 5, and the spacing between the warp fixing belts 21 can be between 1000mm and 1500mm. The weft fixing belts 22 are parallel to the equator of the spherical storage tank 5 and are evenly distributed along the warp direction. The spacing between the weft fixing belts 22 can be between 2000mm and 3000mm.

[0040] like Figure 2 As shown, a support member 1 is welded to the underside of the warp fixing band 21. The ends of the support member 1 respectively abut against the frame structure 2 and the spherical storage tank 5, creating a gap between them for the installation of the thermal insulation layer 3. Leg pads are provided at the contact points between the support member 1 and the spherical storage tank 5 to prevent the support member 1 from moving and scratching the surface of the spherical storage tank 5 and the anti-corrosion layer. The support member 1 is supported on the outer surface of the spherical storage tank 5, and the spacing between the support members 1 can range from 500 mm to 1000 mm.

[0041] As far as feasible, the warp and weft fixing straps 21 and 22 should be made of a single piece of flat steel to reduce welded joints and ensure tensile strength. If the warp and weft fixing straps 21 and 22 need to be extended for overlapping, butt welding can be used. To ensure overlapping strength, a connecting plate with a length of 6 to 8 times the width of the fixing straps is welded to the overlapping fixing straps on the side facing the spherical storage tank 5.

[0042] like Figure 1 As shown, the warp fixing belt 21 and the weft fixing belt 22 intersect and connect to form a spherical profile that matches the spherical storage tank 5. The intersection of the warp fixing belt 21 and the weft fixing belt 22 can be connected by bolts to ensure that the warp fixing belt 21 and the weft fixing belt 22 are detachable and reusable. Figure 5 FIG. 1 is a schematic structural diagram of the connection between the warp fixing belt and the weft fixing belt in an embodiment of the present invention. Figure 5 As shown, the intersection of the weft fixing belt 22 and the warp fixing belt 21 has a curved portion 221 that is recessed toward the side of the spherical storage tank 5. The warp fixing belt 21 passes through the curved portion 221 to make the outer sides of the weft fixing belt 22 and the warp fixing belt 21 smooth, thereby ensuring the flatness of the outer edge surface of the frame structure 2 and further ensuring the surface smoothness of the outer protective layer 4.

[0043] In order to make the warp fixing belt 21 and the weft fixing belt 22 able to hang on the outer surface of the spherical storage tank 5, avoid direct connection with the spherical storage tank 5 such as welding, thereby avoiding damage to the outer surface of the spherical storage tank 5 on the one hand, and on the other hand, the frame structure 2 and the spherical storage tank 5 can be in a detachable state, which is convenient for the later re-inspection of the spherical shell weld to remove the entire spherical storage tank insulation structure, and can be reused after removal. Figure 3 FIG1 is a top view of the fixing ring mechanism in an embodiment of the present invention. Figure 4 FIG. 1 is a front view of the fixing ring mechanism in an embodiment of the present invention, as shown in FIG. Figure 1 、 Figure 3 and Figure 4 As shown, the frame structure 2 may include two fixing ring mechanisms 23 located at the top and bottom of the spherical storage tank 5. The fixing ring mechanisms 23 are mounted on the neck of the manhole 51 of the spherical storage tank 5. The ends of the warp fixing belt 21 are connected to the two fixing ring mechanisms 23 at the top and bottom of the spherical storage tank 5, respectively. The fixing ring mechanism 23 at the top of the spherical storage tank 5 pulls the warp fixing belt 21 upward, while the fixing ring mechanism 23 at the bottom of the spherical storage tank 5 pulls the warp fixing belt 21 downward, so that it is retracted toward the bottom of the spherical storage tank 5.

[0044] like Figure 3 and Figure 4 As shown, in order to facilitate the installation of the fixing ring mechanism 23 on the neck of the manhole 51 of the spherical storage tank 5, the fixing ring mechanism 23 includes at least a fixing ring 231 having two semicircular rings. The two semicircular rings are connected by bolts, so as to achieve repeatable disassembly and installation between the two semicircular rings, which is convenient for removing the entire spherical storage tank insulation structure when re-inspecting the spherical shell welds in the later stage. The outer side of the fixing ring 231 is provided with a plurality of connecting holes 2311 in the circumferential direction. The connecting holes 2311 can be rectangular and are used to connect the warp fixing belt 21. The fixing ring 231 has an annular belt 2312 extending in the vertical direction and a bottom plate 2313 extending in the horizontal direction. The connecting holes 2311 are located on the bottom plate 2313, and the annular belts 2312 opposite to the two semicircular rings are connected by bolts.

[0045] As feasible, Figure 4 As shown, the warp fixing strap 21 is connected to the fixing ring 231 via a pull ring 232 passing through a connection hole 2311. The pull ring 232 and the warp fixing strap 21 are connected by bolts. The warp fixing strap 21 is located between the ends of the pull ring 232. The ends of the warp fixing strap 21 and the pull ring 232 are connected by bolts. This allows the warp fixing strap 21 and the fixing ring 231 to be removably installed and removed, facilitating the removal of the entire spherical tank insulation structure for later re-inspection of the spherical shell welds.

[0046] As a feasible method, a warp fixing belt 21 can be divided into two sections, and the opposite ends of the two sections of the warp fixing belt 21 are connected by an adjustable bolt 211. The upper end point of the upper section and the lower end point of the lower section are connected to the fixing ring mechanism 23 at the top and bottom of the spherical storage tank 5 respectively through a pull ring 232. Figure 2 As shown, the opposite ends of the two sections of the warp fixing belt 21 are respectively connected to a first guide connecting seat 212 with a through hole and a second guide connecting seat 213 with a through hole, and the adjustable bolt 211 passes through the through holes of the first guide connecting seat 212 and the second guide connecting seat 213 to align the two sections of the warp fixing belt 21. The above method can ensure that the connection between the two sections of the warp fixing belt 21 will not be eccentric. The adjustable bolt 211 can be a tension bolt. Furthermore, the connection between the two sections of the warp fixing belt 21 can be located below the support 1 on the equator of the spherical storage tank 5 to facilitate the installation of the adjustable bolt 211 and ensure the curvature of the warp fixing belt 21. The tension of the warp fixing belt 21 can be adjusted by the adjustable bolt 211, so that it is better restrained on the outside of the spherical storage tank 5.

[0047] By replacing the insulation nail structure in the prior art with the above-mentioned frame structure 2, firstly, the amount of insulation nail welding work can be reduced; secondly, it can be used to fix the insulation layer 3 and the outer protective layer 4; and thirdly, the smoothness and beauty of the insulation structure can be ensured.

[0048] like Figure 2 As shown, the insulation layer 3 is located in the gap between the frame structure 2 and the spherical storage tank 5. The insulation layer 3 may include multiple insulation blocks disposed in the gap, which are installed in the gap between the warp fixing bands 21 and the weft fixing bands 22. The insulation layer 3 can be closely attached to the outer wall of the spherical storage tank 5 to achieve thermal insulation of the spherical storage tank 5. The material of the insulation layer 3 is not limited to composite silicates, aluminum silicate noodles, rock wool, etc.

[0049] Furthermore, the outer surface of the thermal insulation layer 3 is flush with the outer surface of the frame structure 2, that is, flush with the warp fixing belt 21 and the weft fixing belt 22. The bulk density of the thermal insulation layer 3 should generally not exceed 128 kg / m 3 Too much bulk density can easily cause deformation of the lower hemisphere insulation structure. A wire, such as a metal wire, is connected between adjacent warp fixing bands 21. This wire is used to restrain the insulation block so that it fits snugly against the spherical storage tank 5. A wire can also be connected between adjacent weft fixing bands 22. This wire is used to restrain the insulation block so that it fits snugly against the spherical storage tank 5. The wire can connect and secure the insulation block to the weft fixing bands 22 and the warp fixing bands 21.

[0050] In the above manner, the insulation layer 3 is embedded and fixed on the warp fixing belt 21 and the weft fixing belt 22, which can prevent the load of the insulation layer 3 in the lower hemisphere of the spherical storage tank 5 from acting on the insulation layer 3 in the upper hemisphere, and prevent the insulation layer 3 from being deformed by heat during long-term use, thereby affecting the overall insulation effect.

[0051] like Figure 2 As shown, the outer protective layer 4 is connected to the frame structure 2, wrapping around the outside of the frame structure 2 and the insulation layer 3. Specifically, the outer protective layer 4 may include multiple outer protective plates, which are fixed to the warp fixing bands 21 and / or the weft fixing bands 22 via blind rivets. The curvature of the protective plates is consistent with the curvature of the outer wall of the spherical tank, ensuring the smoothness and surface aesthetics of the outer protective layer 4.

[0052] The outer protective layer 4 can be made of galvanized iron, color-coated steel, aluminum, aluminum-plastic sheet, and the like, and is not limited in this application. This method allows for easy removal of the outer protective layer from the warp and weft fixing straps 21 and 22, facilitating the removal of the entire spherical tank insulation structure for subsequent re-inspection of the spherical shell welds. Furthermore, the outer protective layer 4 bears the weight of the frame structure 2, preventing deformation of the insulation layer 3.

[0053] In order to ensure the beautiful appearance of the outer protective layer 4, the thickness of the outer protective layer 4 should not be greater than 0.5 mm.

[0054] This application also proposes a method for installing a spherical storage tank insulation structure, which may include the following steps:

[0055] A frame structure 2 covering the spherical storage tank 5 is installed on the outer surface of the spherical storage tank 5 , and the warp fixing belts 21 and the weft fixing belts 22 in the frame structure 2 are connected by bolts.

[0056] In this embodiment, the fixing ring mechanism 23 can be first installed on the top of the spherical storage tank 5. Specifically, the two semi-circular fixing rings 231 are bolted together, so that they are sleeved and installed on the neck of the manhole 51 of the spherical storage tank 5. The warp fixing belt 21 is then connected to the fixing ring 231 via a pull ring 232 passing through the connection hole 2311. The pull ring 232 and the warp fixing belt 21 are bolted together. Then, the fixing ring mechanism 23 is installed on the bottom of the spherical storage tank 5. Specifically, the two semi-circular fixing rings 231 are bolted together, so that they are sleeved and installed on the neck of the manhole 51 of the spherical storage tank 5. The lower end of the warp fixing belt 21 is then connected to the fixing ring 231 at the bottom. Finally, the weft fixing belt 22 can be installed on the warp fixing belt 21. The warp fixing belt 21 passes through the curved portion 221 to ensure that the outer sides of the weft fixing belt 22 and the warp fixing belt 21 are flat. The intersection of the warp fixing belt 21 and the weft fixing belt 22 is connected by countersunk bolts 24 to make the outer side of the warp fixing belt 21 smooth.

[0057] A support member 1 is installed between the frame structure 2 and the spherical tank 5. Its ends abut against the frame structure 2 and the spherical tank 5, creating a gap between them. The support member 1 can be directly attached to the inside of the warp securing strap 21, abutting against the spherical tank 5 as the warp securing strap 21 is installed. Alternatively, the support member 1 can be installed between the frame structure 2 and the spherical tank 5 after the warp securing strap 21 is installed. Leg pads are provided where the support member 1 contacts the spherical tank 5.

[0058] Furthermore, if a warp fixing belt 21 can be divided into two sections, the tightness of the warp fixing belt 21 can be adjusted by the adjustable bolts 211 on the first guide connecting seat 212 and the second guide connecting seat 213, so that it can be better restrained on the outside of the spherical storage tank 5.

[0059] Multiple insulation blocks are installed into the gap between the warp fixing belt 21 and the weft fixing belt 22, and fixed with wires connected to adjacent warp fixing belts 21 and / or adjacent weft fixing belts 22 so that the insulation blocks are close to the spherical storage tank 5.

[0060] In the above steps, multiple insulation blocks are installed into the gaps and connected and fixed using wires connected to adjacent warp fixing bands 21 and / or adjacent weft fixing bands 22, so that the insulation blocks bear the weight of the frame structure 2. The multiple insulation blocks are spliced ​​together to cover the entire outer surface of the spherical storage tank 5.

[0061] A plurality of outer protection plates are fixed to the warp fixing belt 21 and / or the weft fixing belt 22 by means of blind rivets to form an outer protection layer 4 .

[0062] In the above steps, after the heat-insulating blocks are installed, a plurality of outer protective plates are installed on the outer sides of the warp fixing belts 21 and / or the weft fixing belts 22 to form an outer protective layer 4 .

[0063] The spherical storage tank insulation structure in this application forms a gap between the frame structure 2 and the spherical storage tank 5 through the support member 1, and the insulation layer 3 is set in the gap between the frame structure 2 and the spherical storage tank 5. The insulation layer 3 is fixed by the outer frame structure 2. At the same time, the outer protective layer 4 is also connected to the frame structure 2. The above method can effectively ensure that the insulation layer 3 and the outer protective layer 4 will not be deformed by gravity. There is no welding between the frame structure 2 and the spherical storage tank 5, avoiding the adverse effects of welding. In addition, while meeting the insulation requirements of the spherical storage tank 5, the appearance of the insulation structure can be guaranteed. Moreover, the spherical storage tank insulation structure is detachable and reusable, which is very beneficial for the insulation of the pressure spherical storage tank 5 with regular inspection of the welds.

[0064] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for all purposes. The term "essentially consisting of..." describing a combination should include the identified elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel features of the combination. The use of the terms "comprising" or "including" to describe the combination of elements, ingredients, parts or steps herein also contemplates an embodiment that is essentially composed of these elements, ingredients, parts or steps. By using the term "may", it is intended to illustrate that any attribute described that "may" include is optional. Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "an" used to describe an element, ingredient, part or step is not intended to exclude other elements, ingredients, parts or steps.

Claims

1. A spherical storage tank insulation structure, characterized in that: The spherical storage tank insulation structure includes: The frame structure for covering a spherical storage tank comprises a plurality of warp fixing belts and a plurality of weft fixing belts; the frame structure also comprises two fixing ring mechanisms respectively located at the top and bottom of the spherical storage tank, the fixing ring mechanisms are sleeved on the manhole neck of the spherical storage tank, and the two ends of the warp fixing belt are respectively connected to the two fixing ring mechanisms at the top and bottom of the spherical storage tank; the fixing ring mechanism comprises a fixing ring having two semicircular rings, the outer side of the fixing ring is provided with a plurality of connecting holes in the circumferential direction, the warp fixing belt is connected to the fixing ring by a pull ring passing through the connecting holes, and the pull ring is connected to the warp fixing belt by bolts; the intersection of the weft fixing belt and the warp fixing belt has a curved portion recessed toward one side of the spherical storage tank, the warp fixing belt passes through the curved portion to make the outer sides of the weft fixing belt and the warp fixing belt flat; the warp fixing belt is divided into two sections, and the opposite ends of the two sections of the warp fixing belt are connected by adjustable bolts; a plurality of support members disposed between the frame structure and the spherical storage tank, wherein one end of the support member is connected to the frame structure, and the other end of the support member abuts against the spherical storage tank to form a gap therebetween; The insulation layer includes a plurality of insulation blocks arranged in the gap; a wire body is connected between adjacent warp fixing belts and / or adjacent weft fixing belts, and the wire body is used to bind the insulation blocks so that the insulation blocks are closely attached to the spherical storage tank; An outer protective layer connected to the frame structure, the outer protective layer covering the outer side of the frame structure and the thermal insulation layer.

2. The spherical storage tank insulation structure according to claim 1, characterized in that: The two semicircular rings are connected by bolts.

3. The spherical storage tank insulation structure according to claim 1, characterized in that: The intersection of the warp fixing belt and the weft fixing belt is connected by countersunk bolts to make the outer side of the warp fixing belt smooth.

4. The spherical storage tank insulation structure according to claim 1, characterized in that: The opposite ends of the two sections of the warp fixing belts are respectively connected to a first guide connecting seat with a through hole and a second guide connecting seat with a through hole, and the adjustable bolt passes through the through holes of the first guide connecting seat and the second guide connecting seat to align the two sections of the warp fixing belts.

5. The spherical storage tank insulation structure according to claim 1, characterized in that: The outer protective layer includes a plurality of outer protective plates, and the outer protective plates are fixed to the warp fixing belt and / or the weft fixing belt by means of blind rivets.

6. A method for installing the spherical storage tank insulation structure according to any one of claims 1 to 5, characterized in that: include: A frame structure covering the spherical storage tank is installed on the outer surface of the spherical storage tank, wherein the warp fixing belts and the weft fixing belts in the frame structure are connected by bolts; A support member is provided between the frame structure and the spherical storage tank, with two ends of the support member respectively pressing against the frame structure and the spherical storage tank to form a gap therebetween; Installing multiple insulation blocks into the gaps between the warp fixing belts and the weft fixing belts, and fixing them with wires connected to adjacent warp fixing belts and / or adjacent weft fixing belts, so that the insulation blocks are close to the spherical storage tank; A plurality of outer protection plates are fixed on the warp fixing belt and / or the weft fixing belt by means of blind rivets to form an outer protection layer.

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