Tool for rounding large-diameter pressure steel pipe

Abstract

The utility model relates to the technical field of underground gas storage gas transmission pipeline construction, and discloses a tool for rounding a large-diameter pressure steel pipe, which comprises a U-shaped clamping plate and a jacking component, the section of the U-shaped clamping plate is U-shaped, and the U-shaped opening of the U-shaped clamping plate is downwards and inversely mounted at the butt joint longitudinal seam of the upper parts of the two steel pipe tiles; the number of the jacking assemblies is two, the two jacking assemblies are symmetrically installed on a plate body on one side of the U-shaped clamping plate, the jacking assemblies penetrate through the U-shaped clamping plate to extend into the U-shaped opening, and the jacking assemblies are in threaded connection with the plate body on one side of the U-shaped clamping plate. Compared with accessories such as a tensioner and a seam pressing device, the tool for rounding the large-diameter pressure steel pipe can ensure that the relative positions of two steel pipe tiles are fixed without being welded with the steel pipe tiles, so that longitudinal seam tailor welding of the two steel pipe tiles is met, the surfaces of the steel pipe tiles are not damaged, and the production efficiency is improved. And the use quality of the cylindrical steel pipe structure formed by welding the steel pipe tiles can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of gas pipeline construction in underground gas storage, in particular to a tool used for assembling large-diameter pressure steel pipes. Background Art

[0002] The underground gas storage of the compressed air energy storage project uses a cylindrical steel pipe structure with a larger diameter as a pipeline for transmitting gas. The cylindrical steel pipe structure uses five types of steel plates with thicknesses of 20mm, 28mm, 36mm, 40mm, and 48mm, which are bent into steel pipe tiles. Multiple steel pipe tiles are welded and fixed to form an overall cylindrical steel pipe structure. The current construction method of the cylindrical steel pipe structure is to hoist the steel pipe tile onto the circular platform and place it upright, adjust its bottom to match the ground sample on the circular platform, and temporarily fix it with a spot welded block on the circular platform. The upper part of the steel pipe tile uses welding tensioners, seam pressers and other accessories to ensure that the two steel pipe tiles are fixed in position when the steel pipe tiles are welded longitudinally.

[0003] The current construction method of cylindrical steel pipe structures has the following defects: when welding the longitudinal seams, it is necessary to weld accessories such as tensioners and seam pressers on the upper part of the steel pipe tiles. After the construction is completed, the welding fixing points of the accessories are cut off. The cutting process is bound to damage the surface of the steel pipe tiles, thereby affecting the use quality of the cylindrical steel pipe structure. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a tool for assembling a large diameter pressure steel pipe into a round shape.

[0005] The technical solution adopted by the utility model is:

[0006] A tool for assembling large diameter pressure steel pipes into a circle, the tool for assembling large diameter pressure steel pipes into a circle comprises a U-shaped pallet and a tightening assembly; the U-shaped pallet has a U-shaped cross-section, and its U-shaped opening is installed downward and inverted at the butt longitudinal seam on the upper parts of two steel pipe tiles; the tightening assembly consists of two groups, and the two groups of tightening assemblies are symmetrically installed on a side plate of the U-shaped pallet, the tightening assembly passes through the U-shaped pallet and extends into the U-shaped opening, and the tightening assembly is threadedly connected to a side plate of the U-shaped pallet.

[0007] Furthermore, the U-shaped card plate includes an outer plate, an inner plate and a top connecting plate; the outer plate and the inner plate are arc plates of equal size and curvature, a certain distance is left between the outer plate and the inner plate, and the top of the outer plate and the top of the inner plate are welded and fixed by the top connecting plate.

[0008] Furthermore, through holes are symmetrically arranged on the outer plate, and fixing nuts are welded on the outer sides of the through holes.

[0009] Furthermore, the tooling for assembling a large diameter pressure steel pipe into a circle also includes a pad, which is located between the outer plate and the steel pipe tile.

[0010] Furthermore, the tightening assembly is a bolt, and a force ring for use with a crowbar is welded and fixed on the bolt cap.

[0011] The beneficial effects of the utility model are:

[0012] Compared with the accessories such as the tensioner and the seam presser, the tooling for assembling large-diameter pressure steel pipes can ensure the relative position of the two steel pipe tiles is fixed without welding with the steel pipe tiles, thereby satisfying the longitudinal seam welding of the two steel pipe tiles, and will not damage the surface of the steel pipe tiles, and can ensure the use quality of the cylindrical steel pipe structure after the steel pipe tiles are welded. At the same time, the tooling for assembling large-diameter pressure steel pipes has a simple structure, low cost, easy processing, and is relatively convenient to install and disassemble, and can also greatly improve the construction efficiency of the longitudinal seam welding of steel pipe tiles. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the top surface structure of the utility model after the tooling for assembling a large diameter pressure steel pipe is installed;

[0014] Figure 2 This is a schematic diagram of the side structure of the utility model after the tooling for assembling a large diameter pressure steel pipe is installed;

[0015] Figure 1 —2, 1—U-shaped clamp, 2—tightening assembly, 3—steel pipe tile, 4—outer plate, 5—inner plate, 6—top, 7—nut, 8—shim, 9—force ring. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings of the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] This embodiment provides a tool for assembling a large diameter pressure steel pipe into a circle, such as Figure 1 and Figure 2As shown, the tooling for assembling a large diameter pressure steel pipe includes two parts: a U-shaped clamping plate 1 and a tightening assembly 2. The U-shaped clamping plate 1 includes three plates: an outer plate 4, an inner plate 5 and a top 6 connecting plate; the outer plate 4 and the inner plate 5 are arc plates of equal size and curvature, and a certain distance is left between the outer plate 4 and the inner plate 5. The top 6 of the outer plate 4 and the top 6 of the inner plate 5 are welded and fixed by the top 6 connecting plate; the outer plate 4, the inner plate 5 and the top 6 connecting plate are all made of 30mm thick steel plates, which are welded to form a U-shaped cross-section U-shaped clamping plate 1, which can be installed upside down with the U-shaped opening facing downward at the butt joint longitudinal seam of the upper part of the two steel pipe tiles 3.

[0018] like Figure 1 and Figure 2 As shown, in this embodiment, there are two sets of top tightening components 2, which are symmetrically installed on the outer side plate 4 of the U-shaped clamping plate 1 to fix the positions of the two steel pipe tiles 3 respectively. The top tightening components 2 use M20 full thread bolts. Considering the connection problem, Figure 1 As shown, in this embodiment, through holes are symmetrically provided on the outer plate 4, and M20 nuts 7 are welded and fixed on the outer sides of the through holes, so that the tightening component 2 can be threadedly connected with the outer plate 4 of the U-shaped clamping plate 1, and the tightening component 2 can extend through the U-shaped clamping plate 1 to the U-shaped opening to abut the steel pipe tile 3.

[0019] When the tooling for assembling large-diameter pressure steel pipes is used, the steel pipe tile 3 is first hoisted onto the assembly platform and placed upright, and its bottom is adjusted to match the ground sample on the assembly platform; then the U-shaped opening of the U-shaped clamping plate 1 is installed upside down at the butt longitudinal seam of the upper part of the two steel pipe tiles 3; finally, the two sets of tightening components 2 are rotated to fix the positions of the two steel pipe tiles 3 respectively, and the longitudinal seams of the two steel pipe tiles 3 can be welded at this time; after the longitudinal seam welding is completed, the two sets of tightening components 2 are rotated in reverse to remove the tooling for assembling large-diameter pressure steel pipes.

[0020] Further, as a preferred technical solution of this embodiment, in order to prevent the tightening component 2 from damaging the surface of the steel pipe tile 3, as Figure 1 and Figure 2 As shown, a pad 8 can be added between the outer plate 4 and the steel pipe tile 3. In addition, in order to facilitate the rapid rotation of the top tightening assembly 2, as shown in FIG. Figure 1 and Figure 2 As shown, in this embodiment, a force ring 9 for use with a crowbar is welded and fixed on the bolt cap of the clamping assembly 2. The force ring 9 can be used to quickly rotate the clamping assembly 2 in cooperation with the crowbar, and the clamping force of the clamping assembly 2 on the steel pipe tile 3 is ensured.

[0021] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A tool for rounding a large diameter penstock, characterized in that: The tooling for assembling large-diameter pressure steel pipes into a circle includes a U-shaped clamping plate and a tightening assembly; the cross-section of the U-shaped clamping plate is U-shaped, and its U-shaped opening is installed downward and inverted at the butt longitudinal seam on the upper parts of two steel pipe tiles; the tightening assembly is divided into two groups, and the two groups of tightening assemblies are symmetrically installed on a side plate of the U-shaped clamping plate, and the tightening assembly passes through the U-shaped clamping plate and extends into the U-shaped opening, and the tightening assembly is threadedly connected to a side plate of the U-shaped clamping plate.

2. The tooling for assembling a large diameter pressure steel pipe according to claim 1 is characterized in that: The U-shaped card plate includes an outer plate, an inner plate and a top connecting plate; the outer plate and the inner plate are arc plates of equal size and curvature, a certain distance is left between the outer plate and the inner plate, and the top of the outer plate and the top of the inner plate are welded and fixed by the top connecting plate.

3. The tooling for assembling a large diameter pressure steel pipe according to claim 2 is characterized in that: The outer plate is symmetrically provided with through holes, and fixing nuts are welded on the outer sides of the through holes.

4. The tooling for assembling a large diameter pressure steel pipe according to claim 2 is characterized in that: The tooling for assembling a large diameter pressure steel pipe into a circle also includes a pad, which is located between the outer plate and the steel pipe tile.

5. The tooling for assembling a large diameter pressure steel pipe according to claim 1, characterized in that: The tightening assembly is a bolt, and a force ring for cooperating with a crowbar is welded and fixed on the bolt cap.

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