A method for assembling a spherical storage tank without welding

Abstract

The present invention provides a method for assembling a non-welded spherical storage tank, belonging to the technical field of spherical storage tank assembly construction. The method for assembling the non-welded spherical storage tank is as follows: casting the components of the spherical storage tank; classifying the components of the spherical storage tank into spherical crowns, spherical seats and connecting components, hermetically connecting the spherical crowns through assembly tools, and applying sealant at the joints of the components of the spherical crowns; cleaning and degreasing the assembled spherical crowns and the components of the spherical seats and the connecting parts; marking the positions where the spherical seats, the spherical crowns and the connecting components are connected, and fixing the connecting components to the spherical crowns and the spherical seats; aligning the spherical crowns with the spherical seats so that their connecting components correspond, ensuring that the positions of all connecting components are accurate, and gradually locking each connecting component to tightly connect the spherical crowns and the spherical seats together. This method can solve the problems of thermal stress and deformation of the spherical storage tank during the welding process of the welded spherical storage tank, and the permanent welding is difficult to disassemble.

Description

Technical Field

[0001] The present invention belongs to the technical field of spherical storage tank assembly construction, and more specifically, relates to a method for assembling a non-welded spherical tank. Background Art

[0002] With the global exploitation of oil, the refining industry has developed rapidly. Traditional fuel refineries have faced major challenges, and it has become more urgent for the refining and chemical industry to take an integrated path. The products of refining units will continue to be processed to prepare chemical raw materials such as olefins and aromatics. Spherical storage tanks are mainly used to store chemical raw material products, so the demand is increasing day by day. The shapes of spherical tanks are spherical and ellipsoidal, and the vast majority are single-layer spherical shells. When storing liquefied gases at low temperature and low pressure, double-layer spherical shells are used, and heat-insulating materials are filled between the two layers of spherical shells. The most widely used is the single-layer spherical spherical tank. The spherical shell is formed by welding multiple spherical segments pressed into spherical surfaces using the orange-peel segmentation method, the football segmentation method, or the football-orange-peel hybrid segmentation method. The most common support structure for spherical tanks is the equatorial tangent type, followed by the symmetric type, the skirt support type, the semi-buried type, and the basin type.

[0003] Welding is a method of permanently connecting metal components, and welded joints can provide high-strength connections. For spherical tanks that withstand high pressure or load, welding can ensure the firmness of the connection and provide good structural strength. Welded connections can achieve connections with better sealing performance, especially suitable for spherical tank applications that require high sealing. Through appropriate welding processes and weld designs, the connection parts can have high sealing performance to prevent gas or liquid leakage.

[0004] However, during the process of welding spherical tanks, thermal stress and deformation of the spherical tanks will occur. At the same time, permanent welding is difficult to disassemble and inconvenient to use. Summary of the Invention

[0005] In view of this, the present invention provides a method for assembling a non-welded spherical tank, which can solve the problems of thermal stress and deformation of the spherical tank during the welding process, and at the same time, permanent welding is difficult to disassemble and inconvenient to use.

[0006] The present invention is implemented as follows:

[0007] The present invention provides a method for assembling a non-welded spherical tank, which includes the following steps:

[0008] S10: Construction workers construct a three-dimensional model of the spherical tank according to the design drawings of the spherical tank and optimize it;

[0009] S20: Cast the components of the spherical tank according to the three-dimensional model of the spherical tank;

[0010] S30: Classify the components of the spherical tank into spherical crowns, spherical seats, and connecting components. Seal and connect the spherical crown plates with assembly tools, and apply sealant at the joints of the components of the spherical crown.

[0011] S40: Clean and degrease the assembled components of the spherical crown, the spherical seat, and the connecting parts.

[0012] S50: Mark the positions where the spherical seat, the spherical crown, and the connecting components are connected, and fix the connecting components to the spherical crown and the spherical seat.

[0013] S60: Align the spherical crown with the spherical seat so that their connecting components correspond, ensure the accurate positions of all connecting components, and gradually lock each connecting component to tightly connect the spherical crown and the spherical seat together.

[0014] S70: Use a torque wrench to tighten each connecting component according to the specified torque value to ensure that each connecting component is evenly tightened to guarantee the structural stability of the entire spherical tank.

[0015] S80: After assembly, inspect and adjust the spherical tank.

[0016] S90: After the assembly of the spherical tank is completed, perform detail treatment and surface treatment processes to improve the appearance and corrosion resistance of the spherical tank.

[0017] The technical effects of the method for assembling a non-welded spherical tank provided by the present invention are as follows: The construction workers construct a three-dimensional model of the spherical tank according to the design drawings of the spherical tank and optimize it; cast the components of the spherical tank according to the three-dimensional model of the spherical tank; classify the components of the spherical tank into spherical crowns, spherical seats, and connecting components, seal and connect the spherical crown with assembly tools, and apply sealant at the joints of the components of the spherical crown; clean and degrease the assembled components of the spherical crown, the spherical seat, and the connecting parts; mark the positions where the spherical seat, the spherical crown, and the connecting components are connected, and fix the connecting components to the spherical crown and the spherical seat; align the spherical crown with the spherical seat so that their connecting components correspond, ensure the accurate positions of all connecting components, and gradually lock each connecting component to tightly connect the spherical crown and the spherical seat together; use a torque wrench to tighten each connecting component according to the specified torque value to ensure that each connecting component is evenly tightened to guarantee the structural stability of the entire spherical tank; after assembly, inspect and adjust the spherical tank; after the assembly of the spherical tank is completed, perform detail treatment and surface treatment processes to improve the appearance and corrosion resistance of the spherical tank, which can solve the problems of thermal stress and deformation of the spherical tank during the welding process, and at the same time, permanent welding is difficult to disassemble and inconvenient to use.

[0018] On the basis of the above technical solution, an improved method for assembling a non-welded spherical tank of the present invention can be further improved as follows:

[0019] Among them, the assembly tool includes an assembly fixture, a positioning block, a square pin, and a round pin. The positioning block is welded to two adjacent spherical crown plates. The assembly fixture is nested in the positioning block. The round pin passes through the central hole of the positioning block and is fixed to the fixture. The square pin is driven into the gap between the positioning block and the fixture by hammering;

[0020] After the assembly fixture is nested in the positioning block, it fits well with the two spherical crown plates;

[0021] The round pin passes through the central hole of the positioning block and into the assembly fixture and is locked. By squeezing the assembly fixture and the positioning block with the square pin, the two spherical crown plates are tightly fixed together, realizing the non-welded assembly of the spherical crown plates.

[0022] The beneficial effects of adopting the above improvement scheme are as follows: By setting the assembly tool, the assembly and splicing work of the spherical crown plates can be completed quickly, safely and efficiently; the spherical crown plates are firmly fixed after assembly and are convenient to adjust, which can solve the problems of thermal stress and deformation of the spherical tank during the welding process, and at the same time, permanent welding is difficult to disassemble and inconvenient to use, ensuring the assembly quality, improving the construction efficiency and saving the construction cost.

[0023] Further, the specific steps of coating the sealing glue at the joints of the components of the spherical crown include:

[0024] The first step is to clean the joints of the components of the spherical crown after sealed connection with a cleaner to ensure that there is no grease residue on the surface;

[0025] The second step is to select a sealing glue with high temperature resistance, corrosion resistance and good adhesion performance according to the material of the spherical crown;

[0026] The third step is to open the package of the sealing glue and stir the sealing glue to ensure that the glue liquid of the sealing glue is evenly mixed;

[0027] The fourth step is to evenly coat the sealing glue on the joints of the components of the spherical crown through a sealing glue gun;

[0028] The fifth step is to gently press and flatten the sealing glue with a pressure strip after coating the sealing glue;

[0029] The sixth step is to immediately clean and remove the excess sealing glue after coating the sealing glue.

[0030] Further, the sealing glue with high temperature resistance, corrosion resistance and good adhesion performance is one of silicone sealant and acrylic sealant.

[0031] Further, the specific steps for cleaning and degreasing the components of the assembled spherical crown, spherical seat, and connecting part include:

[0032] First step, clean any debris, dust, and chips on the surfaces of the components of the spherical crown, spherical seat, and connecting part;

[0033] Second step, evenly spray the degreaser on the surfaces of the components of the spherical crown, spherical seat, and connecting part to ensure that the entire surface is coated;

[0034] Third step, use a clean cloth to wipe the surfaces of the components under the action of the degreaser;

[0035] Fourth step, rinse the degreaser from the surfaces of the components with clean water;

[0036] Fifth step, dry the surfaces of the components using compressed air.

[0037] Further, the connecting component includes two parts, namely the first connecting piece and the second connecting piece, and the first connecting piece and the second connecting piece are fixedly connected by threads; the connecting component is cylindrical, the first connecting piece is fixed to the spherical crown, the second connecting piece is fixed to the spherical seat, an internal thread is provided on the inside of the first connecting piece, an external thread is provided on the outer wall of the second connecting piece, and the internal thread and the external thread are adapted to each other.

[0038] Further, the spherical seat is square, and the length of the spherical seat is the same as the diameter of the spherical crown.

[0039] Further, the specific steps for the construction worker to construct and optimize the three-dimensional model of the spherical tank according to the design drawing of the spherical tank include:

[0040] First step, the construction worker constructs the three-dimensional model of the spherical tank according to the design drawing of the spherical tank;

[0041] Second step, the construction worker performs structured hexahedral mesh division on the three-dimensional model to construct the unit structure of the spherical tank;

[0042] Third step, the construction worker casts the components of the spherical tank according to the shape and size of the unit structure of the spherical tank;

[0043] Fourth step, the construction worker performs three-dimensional scanning on the components of the spherical tank and generates the unit structure model of the spherical tank by reverse modeling;

[0044] Fifth step, the construction worker performs re-Rhino modeling design according to the unit structure model of the spherical tank, and the optimization is completed.

[0045] Furthermore, the specific steps for the construction workers to perform structured hexahedral mesh division on the 3D model and construct the unit structure of the spherical tank are as follows:

[0046] First step, the construction workers establish a structured topological equivalent division method for the 3D model of the spherical tank on different planes, and establish a suitable continuous topological structure according to the different curvatures of the spherical tank;

[0047] Second step, the construction workers perform structured hexahedral mesh division on the 3D model of the spherical tank for the above continuous topological structure;

[0048] Third step, the construction workers perform planar unfolding on each divided part of the structure to obtain an unfolded drawing and determine the corresponding dimensions;

[0049] Fourth step, the construction workers construct the unit structure of the spherical tank.

[0050] The special-shaped plane formed by the outer line and the inner circle of the 3D model structure of the spherical tank with different curvatures is equivalently regarded as a structure with a circular ring topology;

[0051] The specific steps for the construction workers to perform structured hexahedral mesh division on the 3D model of the spherical tank for the above continuous topological structure are as follows:

[0052] First step, the construction workers import the 3D model into the mesh division software to repair the repeated axial guide lines and internal constraint sections generated by the segmentation;

[0053] Second step, the construction workers create separate components for the inlet and outlet surfaces and the internal constraint sections created by the segmentation in sequence, and establish a continuous segmented 3D topological structure along the axis according to the positions of the internal constraint sections;

[0054] Third step, the construction workers determine the number of mesh nodes and the node distribution characteristics, and perform structured hexahedral mesh division on the 3D model of the spherical tank.

[0055] The specific operation steps for the construction workers to determine the number of mesh nodes and the node distribution characteristics are as follows:

[0056] First step, the construction workers respectively establish the corresponding relationships between the points and edges on the inlet and outlet surfaces, the internal constraint sections and the structured topology of the special-shaped plane according to the geometric characteristics of different positions of the spherical tank, and determine the number of mesh nodes and the node distribution on each edge according to the requirements of the calculation accuracy;

[0057] Second step, the construction workers segmentally establish the axial corresponding relationships between the axial guide lines and the continuous 3D topological structure according to the curvatures of different positions of the spherical tank, and determine the number of mesh nodes and the node distribution of each segment on the axis according to the requirements of the calculation accuracy;

[0058] In the third step, the construction workers uniformly combine the determined number of grid nodes with the nodes.

[0059] Furthermore, the specific steps for the construction workers to construct the three-dimensional model of the spherical tank according to the design drawings of the spherical tank include:

[0060] In the first step, according to the design drawings of the spherical tank, the construction workers classify the whole spherical tank step by step using the hierarchical classification method, propose a coding rule based on information organization, and code each part of the classified spherical tank.

[0061] In the second step, the construction workers uniformly standardize the parameters of each part of the spherical tank, create a shared parameter file, and use it in different families and projects.

[0062] In the third step, according to the above classification results, based on the Revit software platform, the construction workers construct the overall three-dimensional model of the spherical tank according to the plan on the construction design drawings, classify and summarize the three-dimensional model, and establish the spherical tank family library.

[0063] In the fourth step, the construction workers call each component in the spherical tank family library according to the actual installation environment of the spherical tank, drive through an external data file, realize the modification of the parameters of the spherical tank components, and generate corresponding instances.

[0064] In the fifth step, the construction workers perform unified assembly to form a complete three-dimensional model of the spherical tank.

[0065] Compared with the prior art, the beneficial effects of a non-welded spherical tank assembly method provided by the present invention are as follows: The construction workers construct a three-dimensional model of the spherical tank according to the design drawings of the spherical tank and optimize it; cast the component parts of the spherical tank according to the three-dimensional model of the spherical tank; classify the component parts of the spherical tank into spherical crowns, spherical seats and connecting components, seal and connect the spherical crowns through assembly tools, and apply sealant at the joints of the component parts of the spherical crowns; clean and degrease the assembled spherical crowns, spherical seats and the component parts of the connecting parts; mark the positions where the spherical seats, spherical crowns and connecting components are connected, and fix the connecting components to the spherical crowns and spherical seats; align the spherical crowns with the spherical seats so that their connecting components correspond, ensure that the positions of each connecting component are accurate, gradually lock each connecting component, and tightly connect the spherical crowns and spherical seats together; use a torque wrench to tighten each connecting component according to the specified torque value to ensure that each connecting component is evenly tightened to ensure the structural stability of the entire spherical tank; after the assembly is completed, inspect and adjust the spherical tank; after the assembly of the spherical tank is completed, carry out detail treatment and surface treatment processes to improve the appearance and corrosion resistance of the spherical tank, and can solve the problems of thermal stress and deformation of the spherical tank during the welding process of the welded spherical tank, and at the same time, the permanent welding is difficult to disassemble and inconvenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings without creative efforts based on these drawings.

[0067] Figure 1 It is an operation flow chart of a non-welded spherical tank assembly method. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0068] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0069] As Figure 1 shown, it is an operation flow chart of a non-welded spherical tank assembly method provided by the present invention. In the figure, the following steps are included:

[0070] S10: The construction workers construct a three-dimensional model of the spherical tank according to the design drawings of the spherical tank and optimize it;

[0071] S20: Cast the component parts of the spherical tank according to the three-dimensional model of the spherical tank;

[0072] S30: Classify the components of the spherical tank into spherical crowns, spherical seats, and connecting components. Seal and connect the spherical crown plates with assembly tools, and apply sealant at the joints of the components of the spherical crown.

[0073] S40: Clean and degrease the assembled spherical crown, spherical seat, and the components of the connecting part.

[0074] S50: Mark the positions where the spherical seat, spherical crown, and connecting components are connected, and fix the connecting components to the spherical crown and spherical seat.

[0075] S60: Align the spherical crown with the spherical seat so that their connecting components correspond, ensure the accurate positions of all connecting components, and gradually lock each connecting component to tightly connect the spherical crown and spherical seat together.

[0076] S70: Use a torque wrench to tighten each connecting component according to the specified torque value to ensure that each connecting component is evenly tightened to guarantee the structural stability of the entire spherical tank.

[0077] S80: After assembly, inspect and adjust the spherical tank.

[0078] S90: After the assembly of the spherical tank is completed, perform detail treatment and surface treatment processes to improve the appearance and corrosion resistance of the spherical tank.

[0079] During use, the construction personnel construct and optimize the 3D model of the spherical tank according to the design drawings of the spherical tank; cast the components of the spherical tank according to the 3D model of the spherical tank; classify the components of the spherical tank into spherical crowns, spherical seats, and connecting components, seal and connect the spherical crown with assembly tools, and apply sealant at the joints of the components of the spherical crown; clean and degrease the assembled spherical crown, spherical seat, and the components of the connecting part; mark the positions where the spherical seat, spherical crown, and connecting components are connected, and fix the connecting components to the spherical crown and spherical seat; align the spherical crown with the spherical seat so that their connecting components correspond, ensure the accurate positions of all connecting components, and gradually lock each connecting component to tightly connect the spherical crown and spherical seat together; use a torque wrench to tighten each connecting component according to the specified torque value to ensure that each connecting component is evenly tightened to guarantee the structural stability of the entire spherical tank; after assembly, inspect and adjust the spherical tank; after the assembly of the spherical tank is completed, perform detail treatment and surface treatment processes to improve the appearance and corrosion resistance of the spherical tank.

[0080] Among them, in the above technical solution, the assembly tool includes an assembly fixture, a positioning block, a square pin, and a round pin. The positioning block is welded to two adjacent spherical crown plates. The assembly fixture is nested in the positioning block. The round pin is inserted through the central hole of the positioning block to fix the fixture, and the square pin is driven into the gap between the positioning block and the fixture by hammering.

[0081] After the assembly fixture is nested in the positioning block, it fits well with the two spherical crown plates;

[0082] The round pin passes through the center hole of the positioning block and into the assembly fixture and is locked. By squeezing the assembly fixture and the positioning block with the square pin, the two spherical crown plates are firmly fixed together, realizing the non-welded assembly of the spherical crown plates.

[0083] Further, in the above technical solution, the specific steps for coating sealant at the joints of the components of the spherical crown include:

[0084] First step, clean the joints of the components of the spherical crown after sealed connection with a cleaner to ensure that there is no grease residue on the surface;

[0085] Second step, select a sealant with high temperature resistance, corrosion resistance and good adhesion performance according to the material of the spherical crown;

[0086] Third step, open the package of the sealant and stir the sealant to ensure that the glue liquid of the sealant is evenly mixed;

[0087] Fourth step, evenly coat the sealant on the joints of the components of the spherical crown through a sealant gun;

[0088] Fifth step, after coating the sealant, gently compact and level the sealant with a pressure strip;

[0089] Sixth step, immediately clean and remove the excess sealant after coating the sealant.

[0090] Further, in the above technical solution, the sealant with high temperature resistance, corrosion resistance and good adhesion performance is one of silicone sealant and acrylic sealant.

[0091] Further, in the above technical solution, the specific steps for cleaning and degreasing the assembled spherical crown and the components of the ball seat and the connection part include:

[0092] First step, clean any debris, dust and chips on the surfaces of the components of the spherical crown and the ball seat and the connection part;

[0093] Second step, evenly spray the degreaser on the surfaces of the components of the spherical crown and the ball seat and the connection part to ensure that the entire surface is coated;

[0094] Third step, use a clean cloth to wipe the surfaces of the components under the action of the degreaser;

[0095] Fourth step, rinse the degreaser from the surfaces of the components with clean water;

[0096] Fifth step, dry the surfaces of the components by using compressed air.

[0097] Further, in the above technical solution, the connecting component includes two parts, namely a first connecting piece and a second connecting piece. The first connecting piece and the second connecting piece are fixedly connected by threads; the connecting component is cylindrical. The first connecting piece is fixed to the spherical crown, and the second connecting piece is fixed to the spherical seat. An internal thread is provided on the inside of the first connecting piece, and an external thread is provided on the outer wall of the second connecting piece. The internal thread and the external thread are adapted to each other.

[0098] Further, in the above technical solution, the spherical seat is square, and the length of the spherical seat is the same as the diameter of the spherical crown.

[0099] Further, in the above technical solution, the specific steps for the construction workers to construct a 3D model of the spherical tank according to the design drawings of the spherical tank and optimize it include:

[0100] The first step, the construction workers construct a 3D model of the spherical tank according to the design drawings of the spherical tank;

[0101] The second step, the construction workers perform structured hexahedral mesh division on the 3D model and construct the unit structure of the spherical tank;

[0102] The third step, the construction workers cast the components of the spherical tank according to the shape and size of the unit structure of the spherical tank;

[0103] The fourth step, the construction workers perform 3D scanning on the components of the spherical tank and generate a unit structure model of the spherical tank by reverse modeling;

[0104] The fifth step, the construction workers perform re-Rhino modeling design according to the unit structure model of the spherical tank, and the optimization is completed.

[0105] Further, in the above technical solution, the specific steps for the construction workers to perform structured hexahedral mesh division on the 3D model and construct the unit structure of the spherical tank include:

[0106] The first step, the construction workers establish a structured topological equivalent division method for the 3D model of the spherical tank on different planes, and establish a suitable continuous topological structure according to the different curvatures of the spherical tank;

[0107] The second step, the construction workers perform structured hexahedral mesh division on the 3D model of the spherical tank for the above continuous topological structure;

[0108] The third step, the construction workers perform planar unfolding on each divided part of the structure to obtain an unfolded drawing and determine the corresponding dimensions;

[0109] The fourth step, the construction workers construct the unit structure of the spherical tank.

[0110] The special-shaped plane formed by the outer line and the inner circle of the 3D model structure of spherical tanks with different curvatures is equivalently regarded as a structure with a circular ring topology;

[0111] The specific steps for construction workers to perform structured hexahedral mesh division on the three-dimensional model of the spherical tank for the above continuous topological structure are as follows:

[0112] In the first step, construction workers import the three-dimensional model into the mesh division software to repair the duplicate axial guide lines and internal constraint sections generated by segmentation;

[0113] In the second step, construction workers create separate components for the inlet and outlet surfaces and the internal constraint sections created by segmentation in sequence, and establish a continuous segmented three-dimensional topological structure along the axis according to the positions of the internal constraint sections;

[0114] In the third step, construction workers determine the number of mesh nodes and the node distribution characteristics, and perform structured hexahedral mesh division on the three-dimensional model of the spherical tank.

[0115] The specific operation steps for construction workers to determine the number of mesh nodes and the node distribution characteristics are as follows:

[0116] In the first step, construction workers respectively establish the corresponding relationships between the points and edges on the inlet and outlet surfaces, internal constraint sections and the structured topology of the special-shaped plane according to the geometric characteristics of different positions of the spherical tank, and determine the number of mesh nodes and the node distribution on each edge according to the requirements of the calculation accuracy;

[0117] In the second step, construction workers segmentally establish the axial corresponding relationships between the axial guide lines and the continuous three-dimensional topological structure according to the curvatures of different positions of the spherical tank, and determine the number of mesh nodes and the node distribution of each segment on the axis according to the requirements of the calculation accuracy;

[0118] In the third step, construction workers uniformly combine the determined number of mesh nodes and the nodes.

[0119] Furthermore, in the above technical solution, the specific steps for construction workers to construct the three-dimensional model of the spherical tank according to the design drawings of the spherical tank are as follows:

[0120] In the first step, construction workers classify the spherical tank as a whole step by step using the hierarchical classification method according to the design drawings of the spherical tank, propose a coding rule based on information organization, and code each part of the classified spherical tank;

[0121] In the second step, construction workers uniformly standardize the parameters of each part of the spherical tank, create a shared parameter file, and use it in different families and projects;

[0122] In the third step, construction workers construct the overall three-dimensional model of the spherical tank based on the Revit software platform according to the scheme on the construction design drawings according to the above classification results, classify and summarize the three-dimensional model, and establish a spherical tank family library;

[0123] Step 4: The construction workers call each component in the spherical tank family library according to the actual installation environment of the spherical tank, and drive through an external data file to modify the parameters of the spherical tank components and generate corresponding instances.

[0124] Step 5: The construction workers perform unified assembly to form a complete 3D model of the spherical tank.

[0125] Specifically, the principle of the present invention is as follows: The construction workers construct and optimize the 3D model of the spherical tank according to the design drawings of the spherical tank; cast the components of the spherical tank according to the 3D model of the spherical tank; classify the components of the spherical tank into spherical crowns, spherical seats and connecting components, seal and connect the spherical crowns through assembly tools, and apply sealant at the joints of the components of the spherical crowns; clean and degrease the assembled spherical crowns, spherical seats and components of the connecting parts; mark the positions where the spherical seats, spherical crowns and connecting components are connected, and fix the connecting components to the spherical crowns and spherical seats; align the spherical crowns with the spherical seats so that their connecting components correspond, ensure the accurate positions of each connecting component, gradually lock each connecting component to tightly connect the spherical crowns and spherical seats; use a torque wrench to tighten each connecting component one by one according to the specified torque value to ensure that each connecting component is evenly tightened to ensure the structural stability of the entire spherical tank; after the assembly is completed, inspect and adjust the spherical tank; after the assembly of the spherical tank is completed, perform detail processing and surface treatment processes to improve the appearance and corrosion resistance of the spherical tank.

Claims

1. A method for assembling a non-welded spherical tank, characterized in that, it includes the following steps: S10: Construction workers construct a three-dimensional model of the spherical tank according to the design drawings of the spherical tank and optimize it; S20: Cast the components of the spherical tank according to the three-dimensional model of the spherical tank; S30: Classify the components of the spherical tank into spherical crowns, spherical seats and connecting components, seal and connect the spherical crown plates through assembly tools, and apply sealant at the joints of the components of the spherical crown; S40: Clean and degrease the assembled spherical crown, spherical seat and the components of the connecting part; S50: Mark the positions where the spherical seat, spherical crown and connecting components are connected, and fix the connecting components to the spherical crown and spherical seat; S60: Align the spherical crown with the spherical seat so that their connecting components correspond, ensure the accurate positions of each connecting component, and gradually lock each connecting component to tightly connect the spherical crown and spherical seat together; S70: Use a torque wrench to tighten each connecting component according to the specified torque value to ensure that each connecting component is evenly tightened to ensure the structural stability of the entire spherical tank; S80: After the assembly is completed, inspect and adjust the spherical tank; S90: After the assembly of the spherical tank is completed, carry out detail treatment and surface treatment processes to improve the appearance and corrosion resistance of the spherical tank.

2. A method for assembling a non-welded spherical tank according to claim 1, characterized in that, the assembly tools include assembly jigs, positioning blocks, square pins and round pins. The positioning blocks are welded to two adjacent spherical crown plates. The assembly jigs are nested in the positioning blocks. The round pins pass through the central holes of the positioning blocks and are fixed to the jigs. The square pins are driven into the gaps between the positioning blocks and the jigs by hammering; after the assembly jigs are nested in the positioning blocks, they fit well with the two spherical crown plates; the round pins pass through the central holes of the positioning blocks and into the assembly jigs and are locked. By squeezing the assembly jigs and the positioning blocks with the square pins, the two spherical crown plates are tightly fixed and connected together, realizing the non-welded assembly of the spherical crown plates.

3. A method for assembling a non-welded spherical tank according to claim 2, characterized in that, the specific steps of applying sealant at the joints of the components of the spherical crown include: The first step is to clean the joints of the components of the spherical crown after sealed connection with a cleaner to ensure that there is no grease residue on the surface; The second step is to select a sealant with high temperature resistance, corrosion resistance and good adhesion performance according to the material of the spherical crown; The third step is to open the package of the sealant and stir the sealant to ensure that the glue liquid of the sealant is evenly mixed; The fourth step is to evenly apply the sealant to the joints of the components of the spherical crown through a sealant gun; The fifth step is to gently press and level the sealant with a pressing strip after applying the sealant; The sixth step is to immediately clean and remove the excess sealant after applying the sealant.

4. A method for assembling a non-welded spherical tank according to claim 3, characterized in that, The sealant with high temperature resistance, corrosion resistance and good adhesion performance is one of silicone sealant and acrylic sealant.

5. A method for assembling a non-welded spherical tank according to claim 4, characterized in that the specific steps for cleaning and degreasing the assembled spherical crown, the spherical seat and the components of the connecting part include: The first step is to clean any debris, dust and chips on the surfaces of the spherical crown, the spherical seat and the components of the connecting part; The second step is to evenly spray the degreaser on the surfaces of the spherical crown, the spherical seat and the components of the connecting part to ensure that the entire surface is coated; The third step is to wipe the surfaces of the components with a clean cloth under the action of the degreaser; The fourth step is to rinse the degreaser from the surfaces of the components with clean water; The fifth step is to dry the surfaces of the components by using compressed air.

6. A method for assembling a non-welded spherical tank according to claim 5, characterized in that the connecting component includes two parts, namely a first connecting piece and a second connecting piece, and the first connecting piece and the second connecting piece are fixedly connected by threads; the connecting component is cylindrical, the first connecting piece is fixed to the spherical crown, the second connecting piece is fixed to the spherical seat, an internal thread is provided on the inside of the first connecting piece, an external thread is provided on the outer wall of the second connecting piece, and the internal thread is adapted to the external thread.

7. A method for assembling a non-welded spherical tank according to claim 6, characterized in that the spherical seat is square, and the length of the spherical seat is the same as the diameter of the spherical crown.

8. A method for assembling a non-welded spherical tank according to claim 7, characterized in that the specific steps for the construction personnel to construct and optimize the three-dimensional model of the spherical tank according to the design drawing of the spherical tank include: The first step is that the construction personnel construct the three-dimensional model of the spherical tank according to the design drawing of the spherical tank; The second step is that the construction personnel perform structured hexahedral mesh division on the three-dimensional model to construct the unit structure of the spherical tank; The third step is that the construction personnel cast the components of the spherical tank according to the shape and size of the unit structure of the spherical tank; The fourth step is that the construction personnel perform three-dimensional scanning on the components of the spherical tank and generate the unit structure model of the spherical tank by reverse modeling; The fifth step is that the construction personnel perform re-Rhino modeling design according to the unit structure model of the spherical tank, and the optimization is completed.

9. A method for assembling a non-welded spherical tank according to claim 8, characterized in that the specific steps for the construction personnel to perform structured hexahedral mesh division on the three-dimensional model to construct the unit structure of the spherical tank include: The first step is that the construction personnel establish a structured topological equivalent division method of the three-dimensional model of the spherical tank on different planes, and establish a suitable continuous topological structure according to the different curvatures of the spherical tank; The second step is that the construction personnel perform structured hexahedral mesh division on the three-dimensional model of the spherical tank for the above continuous topological structure; In the third step, the construction workers perform planar unfolding on each divided part of the structure to obtain an unfolded drawing and determine the corresponding dimensions; In the fourth step, the construction workers construct the unit structure of the spherical tank.

10. A method for assembling a non-welded spherical tank according to claim 9, characterized in that the specific steps for the construction workers to construct the three-dimensional model of the spherical tank according to the design drawing of the spherical tank include: In the first step, according to the design drawing of the spherical tank, the construction workers classify the whole spherical tank step by step by using the hierarchical classification method, propose a coding rule based on information organization, and code each part of the classified spherical tank; In the second step, the construction workers uniformly standardize the parameters of each part of the spherical tank, create a shared parameter file for use in different families and projects; In the third step, according to the above classification results, the construction workers construct the overall three-dimensional model of the spherical tank based on the Revit software platform according to the scheme on the construction design drawing, classify and summarize the three-dimensional model, and establish the spherical tank family library; In the fourth step, the construction workers call each component in the spherical tank family library according to the actual installation environment of the spherical tank, drive through an external data file, realize the modification of the parameters of the spherical tank components, and generate corresponding instances; In the fifth step, the construction workers perform unified assembly to form a complete three-dimensional model of the spherical tank.

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