CN212837020U - Large-scale storage tank of stainless steel composite sheet of on-spot preparation - Google Patents
Large-scale storage tank of stainless steel composite sheet of on-spot preparation Download PDFInfo
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- CN212837020U CN212837020U CN202020418671.0U CN202020418671U CN212837020U CN 212837020 U CN212837020 U CN 212837020U CN 202020418671 U CN202020418671 U CN 202020418671U CN 212837020 U CN212837020 U CN 212837020U
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Abstract
A large-scale storage tank with a stainless steel composite board manufactured on site belongs to the technical field of storage and transportation of liquid chemicals. The tank comprises a tank top, a tank wall and a tank bottom, wherein the tank top comprises a stainless steel tank top plate and a plurality of stainless steel tank top inner reinforcing rib plates, the tank wall is of a composite plate structure, and the tank bottom is of a lining stainless steel structure; the tank top plate and the plurality of tank top inner reinforcing rib plates form a spherical shell self-supporting vault structure; the tank wall is formed by welding and splicing a plurality of tank wall plates, and each tank wall plate comprises a carbon steel composite steel plate base layer and a stainless steel composite layer. The utility model has the advantages that the tank top and the tank wall, the tank wall and the tank bottom, and the tank bottom and the interior of the tank wall are welded and connected by corresponding welding modes, thereby ensuring the strength requirement of the storage tank structure; just the utility model discloses the structural style of storage tank makes all parts with liquid chemicals direct contact, all is carbon steel basic unit and stainless steel multiple layer, when satisfying the economic nature, has guaranteed the corrosion resistance requirement of storage tank.
Description
Technical Field
The utility model belongs to the technical field of the warehousing and transportation of liquid chemicals, concretely relates to large-scale storage tank of stainless steel composite sheet of on-the-spot preparation.
Background
With the rapid increase of economy in China, the vigorous development of various industries such as petrochemical industry, fine chemical industry, medicine, light industry, textile and the like, the demand of basic liquid chemical products is rapidly increased, and the rapid development of the storage and transportation industry of the liquid chemical products is promoted.
For corrosive liquid chemical products, a carbon steel storage tank is not suitable for storage, and the carbon steel, an internal corrosion-resistant storage tank and a stainless steel storage tank are usually adopted for replacement; the carbon steel and internal anti-corrosion storage tank is easy to bulge and fall off due to short service life of the internal anti-corrosion coating, and even pollutes stored chemicals, so the carbon steel and internal anti-corrosion storage tank needs to be used carefully; the strength and the corrosion resistance of the stainless steel storage tank can meet the requirements, but the cost is too high; therefore, stainless steel composite plates are beginning to be widely used due to their excellent corrosion resistance and inexpensive cost.
The composite steel plate is formed by fusing a composite layer and a base layer by adopting an explosion metallurgy forming process or a rolling process, the strength and the rigidity of the common carbon steel base layer are borne, and the composite layer is used as an anti-corrosion layer and can cover the application occasions of the original carbon steel, an internal anti-corrosion storage tank and a stainless steel storage tank; the application of the storage tank greatly saves the using amount of the multilayer precious metal, thereby greatly reducing the investment cost, and simultaneously increasing the structural design and the field installation difficulty of the storage tank. The difficulty is mainly reflected in that: (1) the stainless steel composite plate is characterized in that a base layer and a composite layer are rolled together, the use position is improper or the welding deformation control is not good, the composite layer is easy to separate in the use process, and further the storage tank is easy to leak; the tank top is not in direct contact with the liquid chemical product, is thin, and has low economical efficiency due to the use of the stainless steel composite plate, so that the stainless steel plate is directly used for the tank top; the tank wall and the tank bottom are main application positions of the stainless steel composite plate, and are in direct contact with the liquid chemical product, the stress is complex under the comprehensive action of liquid column static pressure, internal pressure, wind load, earthquake load and the like, a bottom plate is fluctuated or deformed in the operation process of the storage tank, and if the composite layers of the tank wall and the tank bottom are directly welded, the composite layers of the tank bottom composite plate are easy to separate, so that the liquid chemical product is leaked; therefore, the structural design and welding structure selection of the tank wall and the tank bottom are difficult points; (2) composite plate equipment is very common in pressure container manufacturing plants, but on a project site, the manufacturing and the installation of a large-scale composite plate storage tank are very rare, because the manufacturing and the installation of the large-scale composite plate storage tank on the spot are poorer in hardware facilities and environmental resources compared with container manufacturing plants, and how to make a reasonable installation sequence and welding process measures aiming at the complex manufacturing characteristics of the composite plate storage tank and the influence of various comprehensive factors on the spot, so that the quality of the storage tank is a focus of attention.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned problem that exists among the prior art, the utility model aims to provide a large-scale storage tank of stainless steel composite sheet that intensity is good, corrosion resistance is strong, economic benefits is good.
The utility model provides a following technical scheme: a large-scale storage tank with a stainless steel composite plate manufactured on site is characterized by comprising a tank top, a tank wall and a tank bottom, wherein the tank top comprises a stainless steel tank top plate and a plurality of stainless steel tank top inner reinforcing rib plates, the tank wall is of a composite plate structure, and the tank bottom is of a lining stainless steel structure;
the tank top plate and the plurality of tank top inner reinforcing rib plates form a spherical shell self-supporting vault structure;
the tank wall is formed by welding and splicing a plurality of tank wall plates, and each tank wall plate comprises a carbon steel composite steel plate base layer and a stainless steel composite layer.
The large-scale storage tank with the stainless steel composite plate manufactured on site is characterized in that the tank top is welded and fixed with a tank wall plate through stainless steel edge wrapping angle steel.
The large-scale storage tank with the stainless steel composite plate manufactured on site is characterized in that the tank bottom and the tank wall plate are connected through transition welding of a stainless steel angle steel reinforcement.
The large-scale storage tank of stainless steel composite sheet of a kind of on-the-spot preparation, characterized by that the tank bottom includes carbon steel plate and bottom plate lining of a plurality of tank bottoms, the carbon steel plate of tank bottoms and both sides welded fastening inside and outside of the wall plate of tank, adopt the stainless steel angle steel reinforcement welded fastening between the inside of the compound layer T type joint on bottom plate lining and wall plate of tank.
The large-scale storage tank with the stainless steel composite plates manufactured on site is characterized in that the plurality of tank bottom carbon steel plates are connected in a butt joint mode through the base plates in a welded mode, the plurality of bottom plate linings are welded in an overlapped mode, and the tank bottom carbon steel plates and the bottom plate linings are welded in a hole plugging welding mode.
The large-scale storage tank of the stainless steel composite plate manufactured on site is characterized in that the hole pitch of the plug-hole welding is not more than 200mm, a stainless steel cover plate covers the hole, and the periphery of the stainless steel cover plate is welded and fixed with the bottom plate lining layer.
Through adopting above-mentioned technique, compare with prior art, the beneficial effects of the utility model are as follows:
the utility model discloses in through angle steel reinforcement transition welding welded connection between tank bottom and the jar wall, the two sides welded fastening of tank bottom carbon steel board and jar wall, adopt stainless steel angle steel reinforcement to connect between the bottom plate lining and the inboard of jar wall double-deck T type joint and fix, on the basis that satisfies the intensity requirement between tank bottom and the jar wall, make the multiple layer of jar wall and tank bottom not direct contact, avoided the multiple layer of jar wall and tank bottom stainless steel composite sheet to throw off, thereby effectively prevent the liquid chemicals leakage; in the structure, the tank bottom carbon steel plates are welded and connected in a butt joint mode through the base plates, the bottom plate linings are welded in an overlapping mode, the tank bottom carbon steel plates and the bottom plate linings are welded in a hole plugging welding mode, and meanwhile, the strength requirement of the tank bottom structure is also guaranteed; additionally, the utility model discloses the structural style of storage tank makes all parts with liquid chemicals direct contact, all is carbon steel basic unit and stainless steel multiple layer, when satisfying the economic nature, has guaranteed the corrosion resistance requirement of storage tank.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a detailed view of the circumferential weld of the tank wall of the present invention;
FIG. 3 is a detailed view of a longitudinal weld of the tank wall of the present invention;
fig. 4 is a detailed view of node "i" in fig. 1 of the present invention;
FIG. 5 is a detailed view of a welding line of a carbon steel plate at the bottom of the tank of the present invention;
FIG. 6 is a detailed view of the lap joint between the bottom plate linings of the present invention;
FIG. 7 is a schematic view of the arrangement of the bottom plate lining layer and the carbon steel plate plug welding holes at the bottom of the tank of the present invention;
FIG. 8 is a detailed view of a plug welding hole weld of the present invention;
FIG. 9 is a detailed view of the bottom plate lining layer of node "II" in FIG. 1 before construction;
fig. 10 is a detailed view of the utility model of the construction of the bottom plate lining layer of the node "ii" in fig. 1.
In the figure: 1. a tank bottom carbon steel plate; 2. a tank wall panel; 3. a tank roof; 4. a reinforcing rib plate in the tank top; 5. edge-wrapping angle steel; 6. a floor lining; 7. an angle steel reinforcement; 8. a base plate; 9. and (7) a cover plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments of the specification. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in order to provide a better understanding of the present invention to the public, certain specific details are set forth in the following detailed description of the invention. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details.
Referring to fig. 1-10, a large storage tank with a stainless steel composite plate manufactured on site includes a tank top, a tank wall and a tank bottom, the tank top includes a stainless steel tank top plate 3 and a plurality of stainless steel tank top inner reinforcing rib plates 4, the tank wall is of a composite plate structure, and the tank bottom is of a lining stainless steel structure.
The tank top inner reinforcing rib plate 4 is fixedly arranged on the inner side of the tank top plate 3, and the tank top plate 3 and the plurality of tank top inner reinforcing rib plates 4 form a spherical shell self-supporting vault structure.
The tank wall is formed by welding and splicing a plurality of tank wall plates 2, each tank wall plate 2 comprises a carbon steel composite steel plate base layer which is generally Q235B, Q245R and Q345R, and a stainless steel composite layer which is generally S30408 and S31603, the thickness of the base layer is determined according to strength and stability calculation and is generally 6 mm-16 mm, the composite layers are corrosion-resistant layers, the thicknesses of the composite layers are uniformly 2mm, welding of a circumferential welding seam and a longitudinal welding seam of the stainless steel composite plate is performed according to GB/T13148 stainless steel composite steel plate welding technical requirements, the thickness of a transition layer of the welding seam is not less than 2mm, and the thickness of a cover surface layer is not less than 2 mm.
The top of the storage tank is welded and fixed with the tank wall plate 2 through edge-covering angle steel 5 made of stainless steel; the tank bottom and the tank wall plate 2 are connected through transition welding through a stainless steel angle steel reinforcement 7; the inner side and the outer side of the composite plate of the tank bottom carbon steel plate 1 and the tank wall plate 2 are welded and fixed, and the composite plate is used for meeting the requirements on strength and stability; the bottom plate lining 6 and the inner side of the T-shaped joint of the composite layer of the tank wall plate 2 are fixedly connected by a stainless steel angle steel reinforcing piece 7 with the thickness of 4 mm.
General thickness of tank bottoms carbon steel board 1 is 8mm ~12mm, and bottom plate lining 6 is the corrosion resistant plate that 2mm is thick, and the welding between a plurality of tank bottoms carbon steel board 1 is the butt welding type of taking backing plate 8, carries out the construction of bottom plate lining 6 again after the upper surface welds the back and grinds the tie-in between the flat, overlap joint welding between the bottom plate lining 6, welds welded fastening through the consent between tank bottoms carbon steel board 1 and the bottom plate lining 6.
Wherein, the hole spacing of the plug-hole welding is not more than 200mm, the opening part is covered with a stainless steel cover plate 9, and the periphery of the stainless steel cover plate 9 is welded and fixed with the bottom plate lining 6.
A method for installing a large storage tank made of a stainless steel composite plate on site comprises the following steps:
step one, assembling and welding a plurality of tank bottom carbon steel plates 1: a plurality of tank bottom carbon steel plates 1 are welded and connected in a butt joint mode with backing plates 8, and the backing plates 8 are made of carbon steel;
step two, assembling and welding the top ring tank wall plate 2: the girth welding between a plurality of jar wallboard 2, the girth welding divide into three major parts of basic unit, transition layer, multiple layer, and the welding rod combines welding process to assess to select for use, and unloading and groove processing all adopt plasma cutting at the scene, and the groove type is as shown in fig. 2, fig. 3, and the welding sequence is: A. welding the base layer, namely welding the base layer on the compound layer side; B. back chipping is carried out to ensure that a base layer is completely welded; C. welding a transition layer, namely adopting a welding rod with the diameter of 3.2mm, reducing the melting amount of base metal as much as possible to reduce the dilution rate of a welding line, and simultaneously controlling the temperature between layers to be not more than 100 ℃; D. cover surface welding is adopted between the two clad layers, and the welding process adopts smaller welding line energy as far as possible and keeps flat and smooth with the clad layer surface as far as possible;
step three, assembling and welding the tank top: as shown in fig. 4, the tank top plate 3 is welded to the tank wall plate 2 through edge-covered angle steel 5, the welding between the edge-covered angle steel 5 and the tank wall plate 2 is divided into transition layer welding and cover layer welding, and the thickness of the cover layer is not less than 2 mm;
step four, assembling and welding the lifting device and other ring wall plates, wherein the welding is shown in the figures 2 and 3;
step five, dismantling the lifting device, and welding the tank bottom carbon steel plate 1 and the tank wall plate 2 of the bottom storage tank, wherein the thickness of the transition layer is not less than 2mm as shown in fig. 9;
step six, after the welding work is finished and corresponding nondestructive testing is carried out, a water filling test and a positive and negative pressure test of the storage tank are carried out;
step seven, laying of the bottom plate lining layer 6: a plurality of bottom plate linings 6 are welded in an overlapping manner, as shown in fig. 6; the bottom plate lining 6 is a steel plate with the width of 1500mm, the length is specifically determined according to the size of the storage tank, and the gap between plug welding holes of the bottom plate lining 6 is 200mm, as shown in FIG. 7; the plug welding holes are covered by a cover plate 9 with the thickness of 4mm, and the periphery of the cover plate is welded and fixed, as shown in figure 8; the bottom plate lining 6 and the tank wall plate 2 are welded and fixed by a stainless steel angle steel reinforcing piece 7, as shown in fig. 10.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The large-scale storage tank with the stainless steel composite plates manufactured on site is characterized by comprising a tank top, a tank wall and a tank bottom, wherein the tank top comprises a stainless steel tank top plate (3) and a plurality of stainless steel tank top inner reinforcing rib plates (4), the tank wall is of a composite plate structure, and the tank bottom is of a lining stainless steel structure;
the tank roof inner reinforcing rib plate (4) is fixedly arranged on the inner side of the tank roof plate (3), and the tank roof plate (3) and the plurality of tank roof inner reinforcing rib plates (4) form a spherical shell self-supporting vault structure;
the tank wall is formed by welding and splicing a plurality of tank wall plates (2), and each tank wall plate (2) comprises a carbon steel composite steel plate base layer and a stainless steel composite layer.
2. The large-scale storage tank with the stainless steel composite plates manufactured on site as claimed in claim 1, wherein the tank top is welded and fixed with the tank wall plate (2) through stainless steel edge wrapping angle steel (5).
3. The large-scale storage tank with the stainless steel composite plates manufactured on site according to claim 1 is characterized in that the tank bottom and the tank wall plates (2) are in transition welding connection through angle steel reinforcements (7) made of stainless steel materials.
4. The large-scale storage tank with the stainless steel composite plates manufactured on site according to claim 1, characterized in that the tank bottom comprises a plurality of tank bottom carbon steel plates (1) and bottom plate lining layers (6), the tank bottom carbon steel plates (1) are welded and fixed with the inner side and the outer side of a tank wall plate (2), and the bottom plate lining layers (6) are welded and fixed with the inner sides of the composite T-shaped joints on the tank wall plate (2) by stainless steel angle steel reinforcements (7).
5. The large-scale storage tank with the stainless steel composite plates manufactured on site according to claim 4 is characterized in that the plurality of tank bottom carbon steel plates (1) are welded and connected through the base plate (8) in a butt joint mode, the plurality of bottom plate linings (6) are welded in an overlapping mode, and the tank bottom carbon steel plates (1) and the bottom plate linings (6) are welded in a plug welding mode.
6. The large-scale storage tank made of stainless steel composite plates on site according to claim 5, wherein the pitch of the plug-hole welds is not more than 200mm, the open holes are covered with a stainless steel cover plate (9), and the periphery of the stainless steel cover plate (9) is welded and fixed with the bottom plate lining layer (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020418671.0U CN212837020U (en) | 2020-03-27 | 2020-03-27 | Large-scale storage tank of stainless steel composite sheet of on-spot preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020418671.0U CN212837020U (en) | 2020-03-27 | 2020-03-27 | Large-scale storage tank of stainless steel composite sheet of on-spot preparation |
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| Publication Number | Publication Date |
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| CN212837020U true CN212837020U (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020418671.0U Active CN212837020U (en) | 2020-03-27 | 2020-03-27 | Large-scale storage tank of stainless steel composite sheet of on-spot preparation |
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| CN (1) | CN212837020U (en) |
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