CN201376177Y - Installation and adjustment fixtures used in the construction of spherical tanks in bulk - Google Patents

Abstract

The installation and adjustment jig used in the construction of the spherical tank bulk method is characterized by: it is composed of a positioning block and a fixed adjustment plate, the positioning block is square, and a circular positioning hole is opened on the positioning block, and a conical positioning wedge is provided. ; There are two symmetrical Π-shaped fixed plates fixedly connected on the fixed adjustment plate, and a fixed hole that can pass through the positioning block is opened on the horizontal plate of the Π-shaped fixed plate, and a slot width adjustment square wedge and a radian adjustment square are provided. wedge. The adjusting jig is made of existing metal materials and processed by conventional techniques, and is easy to implement. It can be widely used in the assembly and installation of spherical tank shell plates of various specifications and uses, to fix and adjust the gap, edge angle, misalignment and upper opening of all butt welds of spherical shell plates except fillet welds level etc. It has the advantages of simple structure, low cost, convenient adjustment, easy to master the installation and construction process, and low labor intensity.

Description

Installation and adjustment fixtures used in the construction of spherical tanks in bulk

technical field

The utility model relates to a jig used in the construction of spherical tanks in bulk, in particular to an installation and adjustment jig used in the construction of spherical tanks in bulk.

Background technique

Spherical storage tanks are spherical storage equipment often encountered in petrochemical construction. Spherical tanks are divided into segmented and hybrid types. Now the common ones are hybrid type and tangential column leg spherical storage tanks. The assembly of spherical tanks is usually divided into two types: bulk method and bulk method. For small-volume spherical tanks, it is more suitable to use the integral method, but due to the limitation of lifting equipment and equipment capacity, and considering the economical efficiency of construction, the bulk method is currently used for construction, also known as the insert method.

In the bulk construction of spherical tanks, the control of the centering geometric dimensions of the weld group determines the quality of the assembly, and is the most difficult control point in the construction. In the past, most of the construction workers used simple metal wedges and other tools to complete the welding seam alignment. The construction required many construction workers, a large amount of tools and tools, high labor intensity, long construction period, difficult process control, and low adjustment accuracy.

Utility model content

The purpose of this utility model is to address the above-mentioned shortcomings and provide an installation and adjustment jig used in the construction of spherical tank bulk assembly method with simple structure, low cost, easy operation and convenient adjustment.

The technical scheme that realizes the utility model purpose is:

The installation and adjustment jig used in the construction of this spherical tank bulk assembly method is characterized by: it is composed of a positioning block and a fixed adjustment plate, the positioning block is square, and a positioning hole is opened on the positioning block, and a positioning wedge is provided; There are two symmetrical Π-shaped fixed plates fixedly connected to the fixed adjustment plate, and a fixed hole that can pass through the positioning block is opened on the horizontal plate of the Π-shaped fixed plate, and a slot width adjustment square wedge and a radian adjustment square wedge are provided.

The positioning block is square, and a circular positioning hole is opened on the positioning block, and a conical positioning wedge that can be inserted into the positioning hole is provided.

When installing spherical storage tanks in pairs, the positioning blocks are firstly welded to the edges of the inner (or outer) grooves of the spherical shell plates corresponding to each other along the gaps of the spherical shell plates according to the pre-calculated positions. Then put the fixed adjustment plate between the corresponding two positioning blocks, so that the positioning blocks pass through the fixing holes on the ∏-shaped fixing plate respectively, and then insert the positioning wedge into the positioning hole on the positioning block to fix the fixed adjustment plate. Connected between two corresponding spherical shell plates.

When adjusting, according to the width of the welding seam at the connection of each pair of corresponding two spherical shell plates and the curvature of the spherical shell plate itself, insert seams into the gap between the two side plates of the two Π-shaped fixed plates and the positioning block. Adjust the width of the square wedge, and then adjust the horizontal entry amount of the gap width adjustment square wedge according to the design requirements, so as to adjust the horizontal pairing gap between the spherical shell plates. In the gap between the fixed adjustment plate between the two ∏-shaped fixed plates and the inner side of the spherical shell plate, insert the arc adjustment square wedge respectively, adjust the vertical entry amount of the arc adjustment square wedge respectively, and adjust the two adjacent spherical shell plates The overall radian of the join.

The installation and adjustment jig used in the construction of this spherical tank bulk method is made of existing metal materials and processed by conventional techniques, so it is easy to implement. It can be widely used in the assembly and installation of spherical tank shell plates of various specifications and uses, and can fix and adjust the gap, edge angle, misalignment and upper opening of all butt welds of spherical shell plates except fillet welds. level etc. The utility model has the advantages of simple structure, low cost, convenient adjustment, easy control of the installation and construction process, low labor intensity, etc., and has popularization value.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

FIG. 2 is a schematic top view of the part of the fixed adjustment plate in FIG. 1 .

Figures 3, 4 and 5 are schematic diagrams of the structure of the adjustment jig installed at the junction of two adjacent spherical shell plates.

Fig. 6 is a schematic cross-sectional structure diagram of adjusting the jig to adjust the seam width and radian at the joint of the spherical shell plate.

In the figure: 1 positioning block, 1-1 positioning hole, 1-2 positioning wedge, 2 fixed adjustment plate, 2-1∏-shaped fixed plate, 2-2 fixed hole, 2-3 slit width adjustment square wedge, 2-4 Radian adjustment square wedge, 3 left spherical shell plates, 4 right spherical shell plates.

Detailed ways

Below in conjunction with accompanying drawing and given embodiment the utility model is further described.

Referring to Figures 1, 2 and 3, the installation and adjustment jig used in the construction of this spherical tank bulk method group is composed of a positioning block 1 and a fixed adjustment plate 2. Positioning block is square, has circular positioning hole 1-1 on positioning block, and is equipped with conical positioning wedge 1-2. There are two symmetrical Π-shaped fixed plates 2-1 fixedly connected to the fixed adjustment plate, and a square fixed hole 2-2 that can pass through the positioning block is opened on the horizontal plate of the Π-shaped fixed plate, and is equipped with a slot width adjustment Square wedges 2-3 and arc adjustment square wedges 2-4.

Before the installation and construction of the spherical tank, the positioning block is first welded to the edge of the inner groove of each spherical shell plate. The distance between the center of the positioning block and the edge of the spherical shell plate is about 150 mm. The distance between the positioning blocks depends on the size of the spherical shell plate. Make sure, in general, the distance between the positioning blocks in the long weld is 500-900 mm, and the distance between the positioning blocks in the short weld is between 300-500 mm. The distribution position of the positioning blocks of the spherical shell plate of the same size should be Similarly, the positioning blocks on the same side of every two adjacent spherical shell plates should correspond to each other.

Referring to Figures 3, 4, and 5, after the two spherical shell plates are butted and paired, the fixed adjustment plate is placed on the corresponding positioning blocks on both sides of the two spherical shell plates, so that the positioning blocks pass through the ∏-shaped fixed plate respectively Then insert the positioning wedges into the positioning holes on the positioning block, so that the fixed adjustment plate is fixedly connected to the joint of the weld seam of two adjacent spherical shell plates. (Figure 3 is a schematic diagram of the connection state structure of the fixed adjustment plate and the positioning block cut from the positioning block welded on the spherical shell plate. Figure 4 is the installation of the adjustment fixture from the other side of the spherical shell plate where the positioning block is welded The schematic diagram of the structure at the junction of two adjacent spherical shell plates is indicated by a solid line for the clear adjustment fixture on the drawing. Fig. 5 is a transverse cross-sectional structural schematic diagram of the adjustment fixture installed at the junction of two adjacent spherical shell plates. )

When adjusting, according to the width of the welding seam at the joint of each pair of corresponding two spherical shell plates and the curvature of the spherical shell plate itself, in the gap between the two side plates of the two Π-shaped fixed plates and the positioning block, insert Slit width adjustment square wedge, and then according to the design requirements, adjust the horizontal entry amount of the seam width adjustment square wedge respectively, so as to adjust the horizontal pairing gap between the spherical shell plates. For example: increase the entry amount of the left slit width adjustment square wedge 2-3-left in Figure 6, and reduce the entry amount of the right slit width adjustment square wedge 2-3-right, so that the left spherical shell plate 3 Move to the right side in the horizontal direction, thereby reducing the width of the weld between two spherical shell plates, and vice versa, increasing the width of the weld seam between two spherical shell plates, so as to achieve the adjustment of two adjacent spherical shell plates The purpose of the weld width at the joint. In the gap between the fixed adjustment plate between the two ∏-shaped fixed plates and the inner side of the spherical shell plate, insert the arc adjustment square wedge respectively, adjust the vertical entry amount of the arc adjustment square wedge respectively, and adjust the two adjacent spherical shell plates The overall radian of the join. For example: increase the arc at the left spherical shell plate to adjust the entry amount of the square wedge 2-4-left, and reduce the arc at the right spherical shell plate to adjust the entry amount of the square wedge 2-4-right, so that the left The side spherical shell plate 3 moves outward in the vertical direction, and the right spherical shell plate 4 moves inward in the vertical direction; otherwise, the left spherical shell plate moves inward in the vertical direction, and the right spherical shell plate moves outward in the vertical direction. Move, so as to achieve the purpose of adjusting the curvature of the joint of two adjacent spherical shell plates.

After adjusting the width of the weld gap and the radian of the spherical shell plate for all spherical shell plate groups, spot welding is performed on the weld seam first, and then formal welding is performed. During the welding process, when welding to different layers, if there is a small arc deformation, the arc of the spherical shell plate can be adjusted and corrected continuously by adjusting the arc adjustment square wedge until it meets the requirements.

According to the embodiment, the designer of this utility model implements the installation and adjustment jig used in the assembly of the spherical tank bulk method, and the internal trial shows that this adjustment jig can accurately, firmly and effectively complete the assembly of the spherical shell plate For the work, it has the characteristics of simple structure, low cost, easy to master the installation and construction process, less required personnel and auxiliary equipment, low labor intensity, and short construction period, and is welcomed and praised by the trial users.

Claims (2)

1. An installation and adjustment jig used in the construction of spherical tanks in bulk, which is characterized in that it is composed of a positioning block and a fixed adjustment plate. The positioning block is square, and a positioning hole is opened on the positioning block, and a positioning wedge is provided. ; There are two symmetrical Π-shaped fixed plates fixedly connected on the fixed adjustment plate, and a fixed hole that can pass through the positioning block is opened on the horizontal plate of the Π-shaped fixed plate, and a slit width adjustment square wedge and a radian adjustment square are provided. wedge. 2. The installation and adjustment jig used in the construction of spherical tank bulk assembly according to claim 1, characterized in that the positioning block is square, and a circular positioning hole is opened on the positioning block, and there are positioning holes that can be inserted into conical positioning wedge.

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