A spherical tank pre-welded parts layout device and construction method thereof

Abstract

The invention relates to the technical field of spherical tank installation engineering, in particular to a spherical tank pre-welded parts layout device and a construction method thereof. The layout device comprises a bracket base, a height adjustment mechanism, a balance adjustment mechanism and an azimuth plate; the steps include: S1, layout device fixing: fixing the layout device at a manhole of the spherical tank through a base positioning slider; S2, layout device adjustment: height and leveling the layout device through the height adjustment mechanism; S3, data measurement: measuring required data H1 and H4; S4, data calculation: calculating according to a layout radius and a layout formula, and adjusting the angle of a laser rangefinder on the layout device so that the data displayed on the rangefinder is consistent with the calculation structure; the operation is simple, the construction efficiency is improved, the construction safety is improved, the layout accuracy is guaranteed, and the construction cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of spherical tank installation engineering, in particular to a spherical tank pre-weld part layout device and a construction method thereof. Background Art

[0002] As we all know, the spherical tank is a large-capacity, pressure-bearing and efficient storage container, which is widely used in the chemical industry for its superior performance. However, as a special equipment, the spherical tank has an irregular structure and special construction procedures, which poses great risks during the construction process. Especially in the process of laying out and positioning the upper and lower plate pre-weld pads on the outer surface of the spherical shell, the construction workers need to frequently move back and forth on the surface of the spherical shell. At this time, most of the arc-shaped fixtures on the surface of the spherical shell have been dismantled, and there are few places for the construction workers to hook their safety belts. This poses a huge safety hazard. Therefore, it is of great significance to develop a new construction method to solve the safety problems in the process of laying out the spherical tank.

[0003] At present, in the installation project of spherical tanks, the layout of prefabricated weldments of spherical tanks mainly adopts traditional manual layout. The main operation steps are to place the square ruler at the manhole to find the center of the manhole, and the construction workers pinch the layout line or pull the tape measure to perform the layout operation. The layout accuracy deviation is too large, the layout range is small, and the operation is inconvenient. Especially when laying out the lower plate of the spherical tank, the layout is more difficult, which seriously affects the progress of the project and increases the construction cost. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a spherical tank pre-weld part layout device and a construction method thereof, which are easy to operate, improve construction efficiency, improve construction safety, ensure layout accuracy, and reduce construction costs.

[0006] (II) Technical solution

[0007] To achieve the above object, the present invention provides the following technical solutions: a spherical tank pre-weld part layout device, comprising a support base, a height adjustment mechanism, a balance adjustment mechanism and an orientation plate;

[0008] The bracket base includes a central base, the front end, rear end, left end and right end of the central base are all provided with guide rail bases, and pull rod sliders are slidably provided on the four groups of the guide rail bases, the pull rod sliders are provided with first top screws for fixing the pull rod sliders, the bottom end of the guide rail base is slidably provided with a base positioning slider, and a positioning top screw for fixing the base positioning slider is provided on the base positioning slider;

[0009] The height adjustment mechanism includes a height adjustment rod and a height adjustment tube. An adjustment ball is arranged in the middle of the central base. The bottom end of the height adjustment tube passes through the adjustment ball. The bottom end of the height adjustment rod passes through the height adjustment tube. The top end of the height adjustment rod is connected to the azimuth plate. A second top screw for fixing the height adjustment rod is arranged on the height adjustment tube.

[0010] The balance adjustment mechanism includes four groups of coarse adjustment devices and four groups of fine adjustment devices. The bottom ends of the four groups of coarse adjustment devices are respectively hinged to the four groups of pull rod sliders, the top ends of the four groups of coarse adjustment devices are respectively connected to the four groups of fine adjustment devices, and the top ends of the four groups of fine adjustment devices are respectively hinged to the outer top of the height adjustment rod;

[0011] The top of the azimuth disk is provided with a fixing groove for fixing the digital display compass, one end of the azimuth disk is rotatably provided with a rangefinder tray, and the azimuth disk is provided with a third top screw for fixing the rangefinder tray.

[0012] Preferably, the top end of the height adjustment rod is rotatably connected to the azimuth plate, and an azimuth plate fixing cap for fixing the azimuth plate is provided at the top end of the azimuth plate.

[0013] Preferably, the coarse adjustment device comprises a first coarse adjustment rod and a second coarse adjustment rod which are nested with each other, and a fourth top screw which limits the first coarse adjustment rod and the second coarse adjustment rod.

[0014] Preferably, a circular tray is provided on the top of the height adjustment rod, and movable plates are connected to the tops of the four groups of fine-tuning devices, and the four groups of movable plates are hinged to the outer side of the circular tray.

[0015] Preferably, an elastic fixing plate for clamping the digital compass is provided in the fixing groove.

[0016] A spherical tank pre-weld part layout construction method comprises the following steps:

[0017] S1. Fixing the sampler: fix the sampler at the manhole of the spherical tank through the base positioning slider;

[0018] S2. Sampler adjustment: adjust the sampler height and level through the height adjustment mechanism;

[0019] S3, data measurement: measure the required data H1 and H4;

[0020] S4, data calculation: Calculate according to the layout radius and layout formula, and adjust the angle of the laser rangefinder on the layout device so that the data displayed on the rangefinder is consistent with the calculation structure;

[0021] S5. Determine the layout radius: At this time, the dot position of the laser rangefinder is the layout radius;

[0022] S6. Stakeout positioning: Place the digital compass in the fixed slot of the azimuth disk, adjust the direction of the azimuth disk, read the data on the digital compass screen until it is consistent with the data on the drawing. After the azimuth adjustment is completed, the position of the red dot on the laser rangefinder is the stakeout position.

[0023] (III) Beneficial effects

[0024] Compared with the prior art, the present invention provides a spherical tank pre-weld part layout device and a construction method thereof, which have the following beneficial effects:

[0025] 1. The mechanical structure is combined with a laser rangefinder and a digital display compass to lay out and locate the position of the prefabricated weldment pad of the spherical tank, which overcomes the traditional single manual circle-swinging method of spherical tank layout; the digital display compass on the azimuth plate is used to determine the direction, and the fixed laser rangefinder is fine-tuned to determine the position, so as to achieve the precise positioning of the prefabricated weldment pad around the manhole of the spherical tank. This construction method that completely relies on the machine for layout and positioning is conducive to improving the efficiency and accuracy of the layout of the prefabricated weldment pad of the spherical tank, and can speed up the construction progress;

[0026] 2. The base structure is fixed by the manhole of the spherical tank, and its fixed position is stable, the reference position is easy to find, and the fixing method is stable. The operating position of the construction personnel is fixed, and there is no need for frequent movement, which effectively reduces the risk factor of the construction personnel. The materials used in the main structure are mostly higher than the strength coefficient, which improves the stability of the invention and reduces the impact of the environment on the accuracy of this product. The symmetrical spring structure in the groove of the compass plate makes it easy to disassemble the digital display compass. In the past, the construction was mainly to position the template by manual circle swinging. The upper and lower plates of each 1000m3 spherical tank required three workers for two days, and all the benchmarks were located by manual measurement, so the error was large. This product redefines the construction procedure for the layout of spherical tank pre-welds, and the cost price is much lower than a riveter day, saving construction costs, labor costs, schedule costs, quality costs and other budget costs;

[0027] 3. It has simple structure, practical value, high construction efficiency and good stability. It can meet the needs of cost saving, quality control, construction period, construction safety and construction efficiency in the layout construction of spherical tank pre-weld parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the sampler of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the height adjustment mechanism of the sampler of the present invention;

[0030] Figure 3 It is a schematic diagram of the lofting principle of the present invention;

[0031] Figure 4It is a partially enlarged schematic diagram of the lofting principle of the present invention;

[0032] Markings in the attached figure: 1. height adjustment rod; 2. high adjustment tube; 3. azimuth plate; 4. center base; 5. guide rail base; 6. pull rod slider; 7. first top screw; 8. adjustment ball; 9. second top screw; 10. fine-tuning device; 11. fixing groove; 12. rangefinder tray; 13. third top screw; 14. azimuth plate fixing cap; 15. first coarse adjustment pull rod; 16. second coarse adjustment pull rod; 17. fourth top screw; 18. base positioning slider; 19. positioning top screw; 20. round tray; 21. movable sheet; 22. elastic fixing sheet. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-4The present invention discloses a spherical tank pre-welded parts layout device, comprising a support base, a height adjustment mechanism, a balance adjustment mechanism and an azimuth plate 3; the support base comprises a central base 4, the front end, the rear end, the left end and the right end of the central base 4 are all provided with guide rail bases 5, and four groups of guide rail bases 5 are all slidably provided with pull rod sliders 6, and the pull rod sliders 6 are provided with first top screws 7 for fixing the pull rod sliders 6, and the bottom end of the guide rail base 5 is slidably provided with a base positioning slider 18, and a pair of The base positioning slider 18 is fixed with a positioning top screw 19; the height adjustment mechanism includes a height adjustment rod 1 and a raising tube 2, an adjustment ball 8 is arranged in the middle of the central base 4, the bottom end of the height adjustment tube 2 passes through the adjustment ball 8, the bottom end of the height adjustment rod 1 passes through the height adjustment tube 2, the top end of the height adjustment rod 1 is connected to the azimuth disk 3, the top end of the height adjustment rod 1 is rotatably connected to the azimuth disk 3, and an azimuth disk fixing cap 14 for fixing the azimuth disk 3 is arranged on the top end of the azimuth disk 3, and a azimuth disk fixing cap 14 for fixing the azimuth disk 3 is arranged on the height adjustment tube 2. The second fixed top screw 9; the balance adjustment mechanism includes four groups of coarse adjustment devices and four groups of fine adjustment devices 10, the bottom ends of the four groups of coarse adjustment devices are respectively hinged with the four groups of pull rod sliders 6, the top ends of the four groups of coarse adjustment devices are respectively connected with the four groups of fine adjustment devices 10, and the top ends of the four groups of fine adjustment devices 10 are respectively hinged with the outer top of the height adjustment rod 1; the top of the azimuth plate 3 is provided with a fixing groove 11 for fixing the digital display compass, one end of the azimuth plate 3 is rotatably provided with a rangefinder tray 12, and the azimuth plate 3 is provided with a pair of mounting holes for the rangefinder tray 12 is fixed with a third top screw 13, the coarse adjustment device includes a first coarse adjustment rod 15 and a second coarse adjustment rod 16 that are nested with each other and a fourth top screw 17 for limiting the first coarse adjustment rod 15 and the second coarse adjustment rod 16, a circular tray 20 is arranged on the top of the height adjustment rod 1, and the tops of the four groups of fine adjustment devices 10 are all connected with movable plates 21, and the four groups of movable plates 21 are all hinged to the outer side of the circular tray 20; an elastic fixing plate 22 for clamping the digital display compass is arranged in the fixing groove 11.

[0035] Example:

[0036] A spherical tank pre-weld component layout construction method comprises the following steps:

[0037] S1. Fixing the sampler: fix the sampler at the manhole of the spherical tank through the base positioning slider;

[0038] S2. Sampler adjustment: adjust the sampler height and level through the height adjustment mechanism;

[0039] S3, data measurement: measure the required data H1 and H4;

[0040] S4. Data calculation: Calculate according to the layout radius and layout formula, and adjust the angle of the laser rangefinder on the layout device to make the data displayed on the rangefinder consistent with the calculation structure; when the volume of the spherical tank is >1000m3 and the outer diameter of the manhole flange is not greater than 1000mm, it can be approximately considered that H2≈H4, and this procedure can be skipped; when the volume of the spherical tank is ≤1000m3, this procedure cannot be ignored. The vertical distance from the plane on the manhole flange to the outer surface of the spherical shell is H4, the radius of the outer surface of the spherical shell is R, and the outer diameter of the upper plate flange is R1, so H2 can be calculated:

[0041]

[0042] H3=R-H5…………………………………………②

[0043] H2=H4-H3…………………………………………③

[0044] B is the distance from the rotation center of the laser rangefinder tray to the center axis of the sampler, X is the distance of the reading on the laser rangefinder instrument screen, and L1 is the distance from the tail of the laser rangefinder to the rotation axis of the laser rangefinder. X can be calculated as:

[0045] H=H1+H2…………………………………………④

[0046] C=AB…………………………………………⑤

[0047]

[0048] H33=R-H55…………………………………………⑦

[0049]

[0050] X=L1+L2…………………………………………⑨

[0051] According to the above formula, it can be deduced that:

[0052]

[0053] S5. Determine the lofting radius: After finding the specific value of X, slowly rotate the laser rangefinder tray until the reading on the laser rangefinder is equal to the obtained X, then stop rotating and fix the rangefinder tray so that it does not rotate anymore. A laser spot will be observed on the spherical shell, and the distance between the laser spot and the vertical center axis of the spherical tank is the lofting diameter A;

[0054] S6. Stakeout positioning: Place the digital compass in the fixed slot of the azimuth disk, adjust the direction of the azimuth disk, read the data on the digital compass screen until it is consistent with the data on the drawing. After the azimuth adjustment is completed, the position of the red dot on the laser rangefinder is the stakeout position.

[0055] A spherical tank pre-weld part layout device and construction method thereof:

[0056] 1. The mechanical structure is combined with a laser rangefinder and a digital display compass to lay out and locate the position of the prefabricated weldment pad of the spherical tank, which overcomes the traditional single manual circle-swinging method of spherical tank layout; the digital display compass on the azimuth plate is used to determine the direction, and the fixed laser rangefinder is fine-tuned to determine the position, so as to achieve the precise positioning of the prefabricated weldment pad around the manhole of the spherical tank. This construction method that completely relies on the machine for layout and positioning is conducive to improving the efficiency and accuracy of the layout of the prefabricated weldment pad of the spherical tank, and can speed up the construction progress;

[0057] 2. The base structure is fixed by the manhole of the spherical tank, and its fixed position is stable, the reference position is easy to find, and the fixing method is stable. The operating position of the construction personnel is fixed, and there is no need for frequent movement, which effectively reduces the risk factor of the construction personnel. The materials used in the main structure are mostly higher than the strength coefficient, which improves the stability of the invention and reduces the impact of the environment on the accuracy of this product. The symmetrical spring structure in the groove of the compass plate makes it easy to disassemble the digital display compass. In the past, the construction was mainly to position the template by manual circle swinging. The upper and lower plates of each 1000m3 spherical tank required three workers for two days, and all the benchmarks were located by manual measurement, so the error was large. This product redefines the construction procedure for the layout of spherical tank pre-welds, and the cost price is much lower than a riveter day, saving construction costs, labor costs, schedule costs, quality costs and other budget costs;

[0058] 3. It has simple structure, practical value, high construction efficiency and good stability. It can meet the needs of cost saving, quality control, construction period, construction safety and construction efficiency in the layout construction of spherical tank pre-weld parts.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spherical tank pre-weld part layout device, characterized in that: It includes a bracket base, a height adjustment mechanism, a balance adjustment mechanism and a azimuth plate (3); The support base comprises a central base (4), the front end, rear end, left end and right end of the central base (4) are all provided with guide rail bases (5), and pull rod sliders (6) are slidably provided on the four groups of the guide rail bases (5), and the pull rod sliders (6) are provided with first top screws (7) for fixing the pull rod sliders (6), and the bottom end of the guide rail base (5) is slidably provided with a base positioning slider (18), and a positioning top screw (19) for fixing the base positioning slider (18) is provided on the base positioning slider (18); The height adjustment mechanism comprises a height adjustment rod (1) and a height adjustment tube (2); an adjustment ball (8) is arranged in the middle of the central base (4); the bottom end of the height adjustment tube (2) passes through the adjustment ball (8); the bottom end of the height adjustment rod (1) passes through the height adjustment tube (2); the top end of the height adjustment rod (1) is connected to the azimuth plate (3); and a second top screw (9) for fixing the height adjustment rod (1) is arranged on the height adjustment tube (2); The balance adjustment mechanism comprises four groups of coarse adjustment devices and four groups of fine adjustment devices (10), the bottom ends of the four groups of coarse adjustment devices are respectively hinged to the four groups of pull rod sliders (6), the top ends of the four groups of coarse adjustment devices are respectively connected to the four groups of fine adjustment devices (10), and the top ends of the four groups of fine adjustment devices (10) are respectively hinged to the outer top of the height adjustment rod (1); The top of the compass plate (3) is provided with a fixing groove (11) for fixing a digital display compass, one end of the compass plate (3) is rotatably provided with a distance meter tray (12), and the compass plate (3) is provided with a third top screw (13) for fixing the distance meter tray (12).

2. A spherical tank pre-weld part layout device according to claim 1, characterized in that: The top end of the height adjustment rod (1) is rotatably connected to the azimuth disk (3), and a azimuth disk fixing cap (14) for fixing the azimuth disk (3) is arranged at the top end of the azimuth disk (3).

3. A spherical tank pre-weld part layout device according to claim 1, characterized in that: The coarse adjustment device comprises a first coarse adjustment rod (15) and a second coarse adjustment rod (16) which are nested with each other, and a fourth top screw (17) for limiting the position of the first coarse adjustment rod (15) and the second coarse adjustment rod (16).

4. A spherical tank pre-weld part layout device according to claim 1, characterized in that: A circular tray (20) is arranged on the top of the height adjustment rod (1), and movable plates (21) are connected to the tops of the four groups of fine-tuning devices (10), and the four groups of movable plates (21) are hinged to the outer side of the circular tray (20).

5. The spherical tank pre-weld part layout device according to claim 1, characterized in that: An elastic fixing sheet (22) for clamping the digital display compass is arranged in the fixing groove (11).

6. A method for laying out and constructing pre-welded parts of a spherical tank, using the layout device described in any one of claims 1 to 5, characterized in that: The following steps are involved: S1, fixing the sampler: fixing the sampler at the manhole of the spherical tank through the base positioning slider (18); S2. Sampler adjustment: adjust the sampler height and level through the height adjustment mechanism; S3, data measurement: measure the required data H1 and H4; S4, data calculation: Calculate according to the layout radius and layout formula, and adjust the angle of the laser rangefinder on the layout device so that the data displayed on the rangefinder is consistent with the calculation structure; S5. Determine the layout radius: At this time, the dot position of the laser rangefinder is the layout radius; S6. Stakeout positioning: Place the digital display compass in the fixed groove (11) of the azimuth disk (3), adjust the direction of the azimuth disk (3), read the data on the digital display compass screen until it is consistent with the data on the drawing. When the azimuth adjustment is completed, the position of the red dot on the laser rangefinder is the stakeout position.

Images