CN115162813A - Ground assembling method for cylindrical thin oil tank piston module - Google Patents

Ground assembling method for cylindrical thin oil tank piston module Download PDF

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Publication number
CN115162813A
CN115162813A CN202210825132.2A CN202210825132A CN115162813A CN 115162813 A CN115162813 A CN 115162813A CN 202210825132 A CN202210825132 A CN 202210825132A CN 115162813 A CN115162813 A CN 115162813A
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China
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piston
radial
beams
module
jig frame
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CN202210825132.2A
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CN115162813B (en
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刘建伟
刘群杰
张鲁单
王瑾
顾杨阳
吕中亮
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China Third Metallurgical Group Co Ltd
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China Third Metallurgical Group Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H7/00Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
    • E04H7/02Containers for fluids or gases; Supports therefor
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14Conveying or assembling building elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17BGAS-HOLDERS OF VARIABLE CAPACITY
    • F17B1/00Gas-holders of variable capacity
    • F17B1/02Details
    • F17B1/10Guiding moving parts

Abstract

The invention belongs to the technical field of field installation, and particularly relates to a ground assembling method of a cylindrical thin oil tank piston module. Compared with the prior art, the invention has the following beneficial effects: through having adopted the whole welding of assembling in ground, reserve welding shrinkage deformation allowance in advance, assemble and can in time control and adjust piston size chord height, radius size after accomplishing to accomplish effective quality control to guarantee that the piston can the safe and stable operation. After the ground is integrally assembled, the piston can be integrally installed at high altitude, the installation speed is improved, and the service time of a crane, manpower and the like is shortened, so that the construction cost is saved, and the economic benefit is improved.

Description

Ground assembling method for cylindrical thin oil tank piston module
Technical Field
The invention belongs to the technical field of field installation, and particularly relates to a ground assembling method of a cylindrical thin oil tank piston module.
Background
The cylindrical thin oil tank is a novel dry type gas storage tank, has the characteristics of high gas storage pressure, good sealing effect, stable operation and use functions and the like, and is widely used for blast furnace gas huff and puff work. The gas holder realizes gas throughput by the up-and-down operation of the piston, thereby ensuring the pressure balance of a pipe network and reducing the safety risk of the blast furnace pipe network.
The inner structure of the cylindrical thin oil tank is complex, the piston moves up and down along the inner wall of the cylinder, sealing oil is filled between the piston and the cylinder wall to serve as sealing medium, effective and safe sealing effect can be achieved in the piston operation process for ensuring the sealing oil, so that the requirement on the size of the piston is strict, the precision requirement on the manufacturing and installation of the piston is higher, and the piston can achieve better sealing effect.
Piston system in the past adopts the high altitude to piston radial beam (7), piston latitudinal direction roof beam (8), piston radial secondary beam (9), piston board (10) mounting means installation welding alone, because the radial welding volume of piston is too big, the whole shrink deformation that can contract of piston radial direction after the welding is accomplished, results in can diminishing from piston centre ring to limit ring roof beam diameter size to increase limit ring roof beam to the size clearance of side plate, results in the sealed oil leakage rate to improve, influences the sealed effect of piston. Because the piston system is complicated, the size of the edge ring beam is fixed, and the welding shrinkage allowance cannot be reserved for the piston beam, the size of the piston cannot be effectively controlled in the previous piston construction process.
In addition, when the radial main beam is independently installed, the measuring position of high-altitude operation is limited, and the spatial installation size is not easy to control, so that the radius size deviation of the main beam during installation is about +/-80 mm, each beam is required to be secondarily adjusted for the out-of-tolerance part until the standard is met, and then secondary beam and piston plate installation is carried out.
Disclosure of Invention
The invention aims to provide a ground assembling method of a cylindrical thin oil tank piston module, overcomes the defects in the prior art, effectively controls the installation and welding shrinkage deformation on the ground through a ground assembling jig frame, is convenient and safe to operate, improves the working efficiency, shortens the construction operation time, particularly reduces the workload of high-altitude operation, and realizes all-round technical breakthrough in quality, cost and construction safety.
In order to solve the problems, the invention adopts the following technical scheme:
the ground assembling method of the cylindrical thin oil tank piston module is characterized in that a piston is divided into a plurality of modules A and B, welding shrinkage deformation allowance is reserved in advance in a ground integral assembling and welding mode, the piston size chord height and the radius size can be controlled and adjusted in time after assembling is completed, and the size deviation is controlled within a design error, and the ground assembling method specifically comprises the following steps:
step one, preparing an assembly site;
step two, assembling the manufacturing of the jig frame, wherein the assembling jig frame structure comprises: radial bed-jig roof beam, latitudinal bed-jig roof beam, bed-jig post support, bed-jig joist, the spacing dop of piston beam, the preparation step is as follows:
1) Laying two radial jig frame beams according to the distance between two adjacent piston main beams in a prepared assembly field;
2) Measuring the flatness of the radial tire frame beams by using a leveling instrument, after the adjustment is finished, installing the latitudinal tire frame beams between the two radial tire frame beams according to the spacing between the piston latitudinal beams, finishing the fixation of the radial tire frame beams and the latitudinal tire frame beams, and rechecking the flatness of the whole tire frame;
3) Taking the size space of the piston latitudinal beams as a reference, arranging a jig frame column at each latitudinal beam position, wherein the height of the jig frame column is set according to the sequence that the middle is higher and the two sides are lower at the position of the piston latitudinal beam, the height interval of the jig frame column is 500-1750mm, and the jig frame column support is increased in three directions of each jig frame column for enhancing the strength of the stand column;
4) Mounting a jig bracket beam according to the width of a piston radial beam within the range of 150-200mm at the top end of a jig column, and mounting a piston beam limiting chuck at the end part of the jig bracket beam for adjusting and fixing the position of an assembled piston radial beam;
thirdly, assembling piston modules on the ground, wherein piston module components are divided into a module A with a piston radial beam and a module B without the piston radial beam, and the modules A and the modules B are arranged at intervals to be welded into a cylindrical thin oil tank piston;
1) The module A assembling steps are as follows:
the first step is as follows: manufacturing a piston radial beam according to the radius and the chord height of the piston, and reserving the length of the piston radial beam for 100 to 200mm during manufacturing;
the second step is that: the two manufactured piston radial beams are placed on a jig frame joist of a jig frame, after the sizes of the piston radial beams are determined to be correct, fixing is completed, then piston latitudinal beams at two ends of the piston radial beams are installed according to drawings, the remaining piston latitudinal beams are sequentially installed after fixing is completed, connection, fixing and welding of the piston radial beams and the piston latitudinal beams are completed, and finally other piston radial secondary beams are installed and welded;
the third step: after the main and secondary piston beams are installed and welded, piston plates are sequentially laid, the piston plates at two ends of the modules are not laid, the positions of the two ends are used for installing and using the piston modules, the chord height, the chord length and the end point size deviation of the radial piston beam are checked to be within a design error range, after size detection and adjustment are completed, the piston plates are welded in a mode of firstly latitudinal direction and then radial direction, and after welding is completed, the modules are transferred to perform the next group of module assembling and welding work;
2) The assembly steps of the module B are as follows:
the first step is as follows: manufacturing a piston radial beam according to the radius and the chord height of the piston, and reserving the length of the piston radial beam for 100 to 200mm during manufacturing;
the second step: the two manufactured piston radial beams are placed on a jig frame joist of a jig frame, the piston radial beams are fixed after the sizes of the piston radial beams are determined to be correct, then the piston latitudinal beams at two ends of the piston radial beams are installed according to a drawing, the remaining piston latitudinal beams are sequentially installed after the fixing is finished, the connection and the fixing of the piston radial beams and the piston latitudinal beams are finished, the connection points are not welded, and finally other piston radial secondary beams are installed and welded;
the third step: after the main and secondary piston beams are installed and welded, piston plates are sequentially laid, the piston plates at two ends of the module are not laid, the positions of the two ends are used for installing and using piston modules, the chord height, the chord length and the end point size deviation of the radial piston beam are checked to be within a design error range, after size detection and adjustment are completed, the piston plates are welded according to a mode of firstly latitudinal direction and then radial direction, the piston plates of the module are connected with the radial piston beam and are not welded, after all other parts are welded, the connection between the radial piston beam and the latitudinal piston beam is cancelled, at the moment, the latitudinal piston beam, the radial secondary piston beam and the piston plates are an integral module, the piston module is hoisted and transferred, and the next group of modules are assembled by using the original two radial piston beams;
and fourthly, rechecking and adjusting the size of the piston module, rechecking the chord length of the piston radial beam in the drawing, measuring the actual installation size, cutting off part of the piston radial beam of the piston module with the piston radial beam according to the actual installation size, halving the pair size to two ends of the piston radial beam during cutting off, and performing preparation work before installation after rechecking and adjusting the size of the piston module.
The required installation site of bed-jig should satisfy at least one ground and assemble the required operating space of bed-jig, and its place carries out the sclerosis to guarantee to assemble the stability of bed-jig, the sclerosis processing method in place is: and (5) compacting after the field is leveled, and pouring concrete with the thickness of 00mm on the field for hardening.
The height of the jig frame column is controlled to be 500-1750mm, the height of the highest point of the ground assembly module is lower than 1800mm, high-altitude construction is avoided, installation and welding operation of personnel are facilitated, and after the jig frame column is installed, a jig frame column support is installed to improve the overall strength of the jig frame and improve the overall deformation resistance of the jig frame.
And (3) reserving extra allowance of 100-200mm in size of the piston radial beam during blanking manufacturing, using the extra allowance as welding shrinkage size control, and after final assembly is completed, performing size determination before installation and averagely cutting off redundant parts of the piston radial beam at two ends.
After the radial jig frame beam and the latitudinal jig frame beam are fixedly connected, the flatness of the radial jig frame beam and the latitudinal jig frame beam is retested by a level gauge, the whole jig frame is ensured to be kept on the same horizontal plane, and a jig frame column is arranged at the joint of the radial jig frame beam and the latitudinal jig frame beam.
The piston radial beams are placed on jig supporting beams of a jig frame, the piston radial beams are fixed after the sizes of the piston radial beams are determined to be correct, then the piston latitudinal beams at two ends of the piston radial beams are installed according to drawings, the remaining piston latitudinal beams are sequentially installed after the fixing is completed, the connection, the fixation and the welding of the piston radial beams and the piston latitudinal beams are completed, and finally other piston radial secondary beams are installed and welded.
When the module A is assembled, after the piston radial beam, the piston latitudinal beam and the piston radial secondary beam are installed and welded, the piston plates are sequentially laid, the piston plates at two ends of the module are not laid, the positions of two ends of the module are used for installing and using the piston module, the chord length and the endpoint size deviation of the piston radial beam are checked to be within a design error range, after size detection and adjustment are completed, the piston plates are welded according to a mode of firstly welding the latitudinal beam and then welding the piston plates, and after welding, the next group of assembly is carried out.
When the module B is assembled, the connecting parts of the piston radial beam, the piston latitudinal beam and the piston plate 0 are only connected and are not welded.
Compared with the prior art, the invention has the beneficial effects that:
1) The piston is assembled and welded in a modularized mode through a ground assembling process, welding shrinkage deformation allowance is reserved in advance, the piston size chord height and the radius size can be controlled and adjusted in time after assembling is completed, effective quality control can be achieved, and therefore the piston can be guaranteed to operate safely and stably.
2) After the ground is integrally assembled, the piston module can be integrally installed at high altitude, the traditional installation mode of a single component at high altitude is changed, the installation speed is improved, the service time of a crane, manpower and the like is shortened, the construction cost is saved, and the economic benefit is improved.
3) The ground is integrally assembled, so that the welding efficiency and quality are improved, the overhead welding work is reduced, the construction difficulty is reduced, the integral installation construction speed is improved, and the overhead operation danger is reduced.
4) Due to the adoption of the ground modular assembly mode, the manufacturing and mounting quality is improved, the mounting work is simplified, the working efficiency is improved, the construction risk is reduced, the service cycle of manpower and machinery is shortened, and the construction cost is reduced.
Drawings
FIG. 1 is a schematic perspective view of a ground assembling jig according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is a schematic plan view of the structure of FIG. 1;
FIG. 4 is a schematic elevational view of FIG. 1;
FIG. 5 is a block diagram of a module A according to an embodiment of the present invention;
FIG. 6 is a block diagram of a module B according to an embodiment of the present invention;
FIG. 7 is a diagram illustrating the effect of the piston of the gas holder according to the embodiment of the present invention;
in the figure: the method comprises the following steps of 1-radial jig frame beams, 2-latitudinal jig frame beams, 3-jig frame columns, 4-jig frame column supports, 5-jig frame joists, 6-piston beam limiting clamps, 7-piston radial beams, 8-piston latitudinal beams, 9-piston radial secondary beams and 10-piston plates.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
The invention discloses a ground assembling method of a cylindrical thin oil tank piston module, which is characterized in that a piston is divided into a plurality of component members of a module A and a module B, a welding shrinkage deformation allowance is reserved in advance by adopting a ground integral assembling and welding mode, the chord height and the radius size of the piston can be controlled and adjusted in time after the assembly is finished, and the size deviation is controlled within a design error, and the ground assembling method specifically comprises the following steps:
firstly, preparing an assembling field, wherein the installation field required by the ground assembling jig frame meets the operation space required by at least one ground assembling jig frame, the field is hardened to ensure the stability of the assembling jig frame, and the hardening treatment method of the field comprises the following steps: and (5) compacting after the field is leveled, and pouring concrete with the thickness of 400mm on the field for hardening.
Step two, assemble the preparation of bed-jig, dress bed-jig structure includes: radial bed-jig roof beam 1, latitudinal direction bed-jig roof beam 2, bed-jig post 3, bed-jig post support 4, bed-jig joist 5, the spacing dop 6 of piston beam, the preparation step is as follows:
1) Laying two radial jig frame beams 1 in a prepared assembly field according to the distance between two adjacent piston main beams;
2) Measuring the flatness of the radial jig frame beams 1 by using a leveling instrument, after the adjustment is finished, installing the latitudinal jig frame beams 2 between the two radial jig frame beams 1 according to the distance between the piston latitudinal beams, finishing the fixation of the radial jig frame beams 1 and the latitudinal jig frame beams 2, and rechecking the flatness of the whole jig frame;
3) Taking the size space of the piston latitudinal beams 8 as a reference, arranging a tire frame column 3 at each latitudinal beam position, setting the height of the tire frame column 3 according to the chord height at the piston latitudinal beam position in the sequence of the middle height and the two sides height, setting the height interval of the tire frame column 3 at 500-1750mm, and increasing a tire frame column support 4 in three directions of each tire frame column 3 for enhancing the strength of the upright column;
4) And in the range of 150-200mm from the top end of the jig column, a jig joist 5 is arranged according to the width of the piston radial beam 7, and a piston beam limiting chuck 6 is arranged at the end part of the jig joist 5 and used for adjusting and fixing the position of the assembled piston radial beam 7.
The height of the jig frame column 3 is controlled to be 500-1750mm, the height of the highest point of the ground assembly module is lower than 1800mm, high-altitude construction is avoided, installation and welding operation of personnel are facilitated, and after the jig frame column 3 is installed, a jig frame column support is installed to improve the overall strength of the jig frame and improve the overall deformation resistance of the jig frame. And (3) reserving more allowance of 100-200mm in size of the piston radial beam 7 during blanking manufacturing, using the allowance as welding shrinkage size control, after final assembly, after size determination before installation, and averagely cutting off redundant parts of the piston radial beam 7 at two ends. After the radial tire frame beam 1 and the latitudinal tire frame beam 2 are fixedly connected, the flatness of the radial tire frame beam 1 and the latitudinal tire frame beam 2 is retested by a water level gauge, the whole tire frame is kept on the same horizontal plane, and a tire frame column 3 is set at the joint of the radial tire frame beam 1 and the latitudinal tire frame beam 2.
Thirdly, assembling piston modules on the ground, wherein piston module components are divided into a module A with a piston radial beam and a module B without the piston radial beam, and the modules A and the modules B are arranged at intervals and can be welded into a cylindrical thin oil tank piston;
1) The module A assembling steps are as follows: the first step is as follows: manufacturing a piston radial beam 7 according to the radius and the chord height of the piston, and reserving the length of the piston radial beam 7 for 100 to 200mm during manufacturing; the second step: the two manufactured piston radial beams 7 are placed on a jig frame joist 5 of a jig frame, after the sizes of the piston radial beams 7 are determined to be correct, fixing is finished, then piston latitudinal beams 8 at two ends of the piston radial beams 7 are installed according to drawings, after fixing is finished, the remaining piston latitudinal beams 8 are sequentially installed, connection, fixing and welding of the piston radial beams 7 and the piston latitudinal beams 8 are finished, and finally, other piston radial secondary beams 9 are installed and welded; the third step: after the main and secondary piston beams are installed and welded, piston plates 9 are sequentially laid, the piston plates 9 at two ends of the modules are not laid, the positions of the two ends are used for installing and using the piston modules, the chord height, the chord length and the end point size deviation of the radial piston beam 7 are checked to be within a design error range, after size detection and adjustment are completed, the piston plates 10 are welded in a mode of firstly latitudinal direction and then radial direction, and after welding is completed, the modules are transferred to carry out next group of module assembling and welding work; when the module A is assembled, after the piston radial beams 7, the piston latitudinal beams 8 and the piston radial secondary beams 9 are installed and welded, the piston plates 10 are laid in sequence, the piston plates 10 at two ends of the module are not laid, the positions of two ends of the module are used for installing and using the piston modules, the chord height, the chord length and the end point size deviation of the piston radial beams 7 are checked to be within a design error range, after size detection and adjustment are completed, the piston plates are welded in a mode of latitudinal direction first and then radial direction, and after welding is completed, the next group of assembly is carried out. In the assembling process, the piston radial beams 7 are placed on the jig frame joists 5 of the jig frame, after the sizes of the piston radial beams 7 are determined to be correct, fixing is completed, the piston latitudinal beams 8 at two ends of the piston radial beams 7 are installed according to drawings, after fixing is completed, the remaining piston latitudinal beams 8 are sequentially installed, connection, fixing and welding of the piston radial beams 7 and the piston latitudinal beams 8 are completed, and finally other piston radial secondary beams 9 are installed and welded.
2) The assembly steps of the module B are as follows: the first step is as follows: manufacturing a piston radial beam 7 according to the radius and the chord height of the piston, and reserving the length of the piston radial beam 7 for 100 to 200mm during manufacturing; the second step is that: the two manufactured piston radial beams 7 are placed on a jig frame joist 5 of a jig frame, the piston radial beams 7 are fixed after the sizes of the piston radial beams 7 are determined to be correct, then the piston latitudinal beams 8 at two ends of the piston radial beams 7 are installed according to a drawing, the remaining piston latitudinal beams 8 are sequentially installed after the fixing is finished, the connection and the fixing of the piston radial beams 7 and the piston latitudinal beams 8 are finished, the connection points are not welded, and finally other piston radial secondary beams 9 are installed and welded; the third step: after the main piston beam and the secondary piston beam are installed and welded, piston plates 10 are sequentially laid, the piston plates 10 at two ends of the module are not laid, the positions of the two ends are used for installing and using piston modules, the size deviation of the chord length and the end point of the radial piston beam 7 is checked to be within a design error range, after size detection and adjustment are completed, the piston plates are welded according to a mode of firstly latitudinal direction and then radial direction, the piston plates 10 of the module are connected with the radial piston beam 7 and are not welded, when all other parts are welded, the connection between the radial piston beam 7 and the latitudinal piston beam 8 is cancelled, at the moment, the latitudinal piston beam 8, the radial secondary piston beam 9 and the piston plates 10 are an integral module, the piston module is hoisted and transferred, and the next group of modules is assembled by using the original two radial piston beams 7; when the module B is assembled, the piston radial beam 7 is assembled with the piston radial beam 7, only when the module B is assembled, the connecting parts of the piston radial beam 7, the piston latitudinal beam 8 and the piston plate 10 are not welded, and the piston radial beam 7 only plays a limiting role, so that the module B is convenient to assemble with the module A subsequently.
And fourthly, rechecking and adjusting the size of the piston module, rechecking the chord length of the piston radial beam 7 in the drawing, measuring the actual installation size, cutting off part of the piston radial beam 7 of the piston module with the piston radial beam 7 according to the actual installation size, halving the relative size to two ends of the piston radial beam 7 during cutting off, and carrying out preparation work before installation after rechecking and adjusting the size of the piston module.
According to the invention, the cylindrical thin oil tank piston is firstly subjected to modular segmentation and then is assembled and welded on the ground, and because the welding shrinkage deformation allowance is reserved in advance, the chord height and the radius size of the piston can be controlled and adjusted in time after the assembly is finished, so that the effective quality control can be realized, and the piston can be ensured to operate safely and stably. After the assembly is completed, the piston module can be integrally installed at high altitude, the traditional installation mode of a single component at high altitude is changed, the installation speed is improved, the service time of a crane, manpower and the like is shortened, the construction cost is saved, and the economic benefit is improved. The ground module assembly improves the welding efficiency and quality, reduces overhead welding work, reduces the construction difficulty, improves the integral installation construction speed, reduces the danger of overhead operation, and shortens the service cycle of manpower and machinery, thereby obviously reducing the construction cost.
The above embodiments are merely specific examples chosen for illustrating the objects, technical solutions and advantages of the present invention in detail, but should not be construed to limit the scope of the present invention, and various modifications, equivalent substitutions and improvements made without departing from the spirit and principles of the present invention should fall within the scope of the present invention.

Claims (8)

1. The ground assembling method of the cylindrical thin oil tank piston module is characterized in that a piston is divided into a plurality of modules A and B, welding shrinkage deformation allowance is reserved in advance in a ground integral assembling and welding mode, the piston size chord height and the radius size can be controlled and adjusted in time after assembling is completed, and the size deviation is controlled within a design error, and the ground assembling method specifically comprises the following steps:
step one, preparing an assembling field;
step two, assembling the manufacturing of the jig frame, wherein the assembling jig frame structure comprises: radial bed-jig roof beam (1), latitudinal direction bed-jig roof beam (2), bed-jig post (3), bed-jig post support (4), bed-jig joist (5), the spacing dop of piston beam (6), the preparation step as follows:
1) Laying two radial jig frame beams (1) in a prepared assembly field according to the distance between two adjacent piston main beams;
2) Measuring the flatness of the radial jig frame beams (1) by using a leveling instrument, after the flatness is adjusted, installing latitudinal jig frame beams (2) between the two radial jig frame beams (1) according to the distance between the piston latitudinal beams, completing the fixation of the radial jig frame beams (1) and the latitudinal jig frame beams (2), and rechecking the flatness of the whole jig frame;
3) By taking the size space of the piston latitudinal beams (8) as a standard, a jig frame column (3) is arranged at each latitudinal beam position, the height of the jig frame column (3) is set according to the chord height at the piston latitudinal beam position and the sequence of the middle height and the two sides height, the height interval of the jig frame column (3) is 500-1750mm, and a jig frame column support (4) is added in three directions of each jig frame column (3) for enhancing the strength of the column;
4) In the range of 150-200mm at the top end of a jig column, a jig joist (5) is installed according to the width of a piston radial beam (7), and a piston beam limiting chuck (6) is installed at the end part of the jig joist (5) and is used for adjusting and fixing the position of the assembled piston radial beam (7);
thirdly, assembling piston modules on the ground, wherein piston module components are divided into a module A with a piston radial beam and a module B without the piston radial beam, and the modules A and the modules B are arranged at intervals and can be welded into a cylindrical thin oil tank piston;
1) The module A assembling steps are as follows:
the first step is as follows: manufacturing a piston radial beam (7) according to the radius and the chord height of the piston, and reserving the length of the piston radial beam (7) for 100 to 200mm during manufacturing;
the second step: the two manufactured piston radial beams (7) are placed on a jig frame joist (5) of a jig frame, after the sizes of the piston radial beams (7) are determined to be correct, fixing is finished, then piston latitudinal beams (8) at two ends of the piston radial beams (7) are installed according to drawings, the remaining piston latitudinal beams (8) are sequentially installed after fixing is finished, connection, fixing and welding of the piston radial beams (7) and the piston latitudinal beams (8) are finished, and finally other piston radial secondary beams (9) are installed and welded;
the third step: after the main and secondary piston beams are installed and welded, piston plates (9) are sequentially laid, the piston plates (9) at two ends of the module are not laid, the positions of the two ends are used for installing and using the piston module, the chord height, the chord length and the end point size deviation of the radial piston beam (7) are checked to be within a design error range, after size detection and adjustment are completed, the piston plates (10) are welded in a mode of firstly latitudinal direction and then radial direction, and after welding is completed, the module is transferred to perform next group of module assembling and welding work;
2) The assembly steps of the module B are as follows:
the first step is as follows: manufacturing a piston radial beam (7) according to the radius and the chord height of the piston, and reserving the length of the piston radial beam (7) for 100 to 200mm during manufacturing;
the second step: the two manufactured piston radial beams (7) are placed on a jig frame joist (5) of a jig frame, after the sizes of the piston radial beams (7) are determined to be correct, fixing is finished, then piston latitudinal beams (8) at two ends of the piston radial beams (7) are installed according to drawings, the remaining piston latitudinal beams (8) are sequentially installed after fixing is finished, connection and fixation of the piston radial beams (7) and the piston latitudinal beams (8) are finished, connecting points are not welded, and finally other piston radial secondary beams (9) are installed and welded;
the third step: after the main piston beam and the secondary piston beam are installed and welded, piston plates (10) are sequentially laid, the piston plates (10) at two ends of the module are not laid, the positions of the two ends are used for installing and using the piston module, the chord length and the end point size deviation of the radial piston beam (7) are checked to be within a design error range, after size detection and adjustment are completed, the piston plates are welded in a mode of firstly latitudinal direction and then radial direction, the piston plates (10) of the module are not welded with the radial piston beam (7), when all other positions are welded, the radial piston beam (7) is cancelled to be connected with the latitudinal piston beam (8), the secondary piston beam (9) and the piston plates (10) are an integral module, the piston module is hoisted and transferred, and the next group of modules are assembled by using the original two radial piston beams (7);
and fourthly, rechecking and adjusting the size of the piston module, rechecking the chord length of the piston radial beam (7) in the drawing, measuring the actual installation size, cutting off parts of the piston radial beam (7) of the piston module with the piston radial beam (7) according to the actual installation size, evenly dividing the cut-off size to two ends of the piston radial beam (7), and preparing before installation after rechecking and adjusting the size of the piston module.
2. The ground assembling method of the cylindrical thin oil tank piston module as claimed in claim 1, wherein the installation site required by the ground assembling jig frame should meet the operation space required by at least one ground assembling jig frame, and the site is hardened to ensure the stability of the assembling jig frame, and the hardening treatment method of the site is as follows: and (5) compacting after the field is leveled, and pouring concrete with the thickness of 400mm on the field for hardening.
3. The ground assembling method of the cylindrical piston module of the thin oil tank as claimed in claim 1, wherein the height of the jig frame column (3) is controlled to be 500-1750mm, so that the height of the highest point of the ground assembled module is lower than 1800mm, no high-altitude construction is performed, the installation and welding operation of personnel are facilitated, and after the jig frame column (3) is installed, a jig frame column support is installed to improve the overall strength of the jig frame and improve the overall anti-deformation capability of the jig frame.
4. The ground assembling method of the cylindrical lubricating oil tank piston module according to claim 1, wherein a margin of 100-200mm is reserved for the size of the piston radial beam (7) during blanking and manufacturing, the margin is used for controlling the welding shrinkage size, and after final assembling is completed, the size is determined before installation, and the redundant parts of the piston radial beam (7) are cut off on average at two ends.
5. The ground assembly method of the cylindrical thin oil tank piston module according to claim 1, wherein after the connection and fixation of the radial jig frame beam (1) and the latitudinal jig frame beam (2) are completed, the flatness of the radial jig frame beam (1) and the latitudinal jig frame beam (2) is retested by a level gauge, the whole jig frame is ensured to be kept at the same horizontal plane, and a jig frame column (3) is arranged at the joint of the radial jig frame beam (1) and the latitudinal jig frame beam (2).
6. The ground assembling method of the piston module of the cylindrical thin oil tank as claimed in claim 1, wherein the piston radial beam (7) is placed on a jig frame joist (5) of a jig frame, the piston radial beam (7) is fixed after the size of the piston radial beam (7) is determined to be correct, then the piston latitudinal beams (8) at two ends of the piston radial beam (7) are installed according to a drawing, the remaining piston latitudinal beams (8) are sequentially installed after the fixing is completed, the connection, the fixation and the welding of the piston radial beam (7) and the piston latitudinal beams (8) are completed, and finally the other piston radial secondary beams (9) are installed and welded.
7. The ground assembling method of the piston module of the cylindrical thin oil tank according to claim 1, wherein when the module A is assembled, after the piston radial beams (7), the piston latitudinal beams (8) and the piston radial secondary beams (9) are installed and welded, the piston plates (10) are sequentially laid, the piston plates (10) at two ends of the module are not laid, the positions of the two ends are used for installing and using the piston module, the chord height, the chord length and the end point size deviation of the piston radial beams (7) are checked to be within a design error range, after size detection and adjustment are completed, the piston plates are welded in a mode of latitudinal direction first and then radial direction first, and after welding is completed, the next group of assembling is performed.
8. The ground assembly method of the piston module of the cylindrical thin oil tank as claimed in claim 1, wherein when the module B is assembled, the connection parts of the radial piston beam (7), the latitudinal piston beam (8) and the piston plate 10 are only connected and are not welded.
CN202210825132.2A 2022-07-14 2022-07-14 Ground assembling method for cylindrical thin oil tank piston module Active CN115162813B (en)

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