Roundness correcting and centering tool for stainless steel round pipe

Abstract

The utility model discloses a stainless steel round pipe roundness correcting and centering tool which comprises a first semicircular ring assembly and a second semicircular ring assembly, the first semicircular ring assembly and the second semicircular ring assembly respectively comprise two semicircular rings which are arranged in parallel at intervals, and a plurality of supporting rib plates are connected between the two semicircular rings. A plurality of screw holes are formed in each supporting rib plate at intervals, and nuts are fixed to one sides of the screw holes. Lug plates are symmetrically fixed to the two sides, in the thickness direction, of the ends of the two semicircular rings of the first semicircular ring assembly, lug plate holes are formed in the lug plates, and connecting holes are formed in the ends of the two semicircular rings of the second semicircular ring assembly. The first semicircular ring assembly and the second semicircular ring assembly are arranged at the butt joint of the two stainless steel circular pipes in a mirror symmetry mode. The end of the second semicircular assembly is in butt joint with the end of the first semicircular assembly, and a bolt penetrates through a screw hole and a nut to abut against the stainless steel round pipe. The roundness correcting and centering tool for the stainless steel round pipe can correct the roundness of a pipe opening and the concentricity of two pipes.

Description

Technical Field

[0001] The utility model relates to the technical field of ship engineering, in particular to a stainless steel round pipe roundness correction and centering tool. Background Art

[0002] Stainless steel pipes are widely used in ship pipelines because they have strong corrosion resistance and are thinner and lighter than ordinary carbon steel pipes of the same grade of performance. Especially for modern environmentally friendly ships, all systems involving LNG fuel are made of stainless steel, such as LNG filling and gas system, LNG inert gas system, LNG double-wall pipe ventilation system, LNG water glycol heating and cooling system, LNG breathable mast system, etc. Since no leakage is allowed in the pipelines of the LNG system, the relevant stainless steel pipes are basically connected by welding.

[0003] The shipyard found two problems during the construction of stainless steel pipes:

[0004] 1. Due to the good thermal conductivity of stainless steel pipes, the pipe mouth is easy to lose roundness and deform during the pipe cutting process;

[0005] 2. Since stainless steel pipes are connected by butt welding, the concentricity requirements for the two welded pipes are high. However, in the actual construction process, the two pipes are prone to eccentricity, especially when larger diameter pipes are eccentric, it is difficult to adjust and align them. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a stainless steel round tube roundness correction and centering tool, which can correct the roundness of the tube mouth and the concentricity of two tubes.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A stainless steel round tube roundness and centering tool comprises a first semicircular ring assembly and a second semicircular ring assembly, wherein the first semicircular ring assembly and the second semicircular ring assembly each comprise two semicircular rings arranged in parallel and spaced relation, a plurality of supporting ribs are connected between the two semicircular rings, a plurality of screw holes are arranged at intervals on each of the supporting ribs, and a nut is fixed on one side of the screw hole; ear plates are symmetrically fixed on both sides of the end portions of the two semicircular rings of the first semicircular ring assembly in a thickness direction, ear plate holes are provided on the ear plates, and connecting holes are provided on the ends of the two semicircular rings of the second semicircular ring assembly; the first semicircular ring assembly and the second semicircular ring assembly are mirror-symmetrically arranged at the butt joint of the two stainless steel round tubes, and the left and right sides are respectively located on the outsides of the two stainless steel round tubes; the end portion of the second semicircular ring assembly extends into the ear plate, butts with the end portion of the first semicircular ring assembly, and is connected by a connecting piece through which the connecting hole and the ear plate hole are penetrated, and the bolt penetrates the screw hole and the nut abuts against the stainless steel round tube.

[0009] Furthermore, the supporting ribs on the first semicircular ring component and the second semicircular ring component are symmetrically arranged, and the distance between two adjacent supporting ribs on the same semicircular ring component is equal.

[0010] Furthermore, the number of supporting ribs on the first semicircular ring assembly and the second semicircular ring assembly are both 3.

[0011] Furthermore, the number of screw holes on each of the supporting ribs is two, and the two screw holes are symmetrically arranged relative to the center line of the supporting ribs.

[0012] Furthermore, the nut is located on a side of the screw hole close to the stainless steel round tube.

[0013] Through on-site construction verification, the stainless steel round tube roundness and centering tooling of the utility model effectively solved the problems encountered by our factory during the stainless steel tube construction process, ensuring both the welding quality of the stainless steel tube and the construction progress, and has been promoted for use within the company. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional structural diagram of the stainless steel round tube roundness correction and centering tooling in the utility model;

[0015] Figure 2 This is a front view of the structure of the stainless steel round tube roundness correction and centering tooling in the utility model in the use state;

[0016] Figure 3 It is a structural schematic diagram of the first semicircular ring assembly described in the utility model;

[0017] Figure 4 It is a structural schematic diagram of the second semicircular ring assembly described in the utility model.

[0018] Among them, 1-first semicircular ring assembly, 2-second semicircular ring assembly, 3-stainless steel round tube, 4-ear plate, 11-semicircular ring, 12-support rib plate, 13-nut, 121-screw hole, 111-connecting hole, 41-ear plate hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in 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.

[0020] like Figure 1-Figure 3As shown, a stainless steel round tube roundness correction and centering tool comprises a first semicircular ring component 1 and a second semicircular ring component 2, wherein the first semicircular ring component 1 and the second semicircular ring component 2 each comprise two semicircular rings 11 arranged in parallel and spaced relation to each other, three supporting ribs 12 are connected between the two semicircular rings 11, the supporting ribs 12 on the first semicircular ring component 1 and the second semicircular ring component 2 are symmetrically arranged, and the distance between two adjacent supporting ribs 12 on the same semicircular ring component is equal; two screw holes 121 are spaced apart on each of the supporting ribs 12, and the two screw holes 121 are symmetrically arranged relative to the center line of the supporting ribs 12, and a screw hole 121 is fixed on one side of the screw hole 121 close to the stainless steel round tube 3. A nut 13 is fixed; ear plates 4 are symmetrically fixed on both sides of the end thickness direction of the two semicircular rings 11 of the first semicircular ring component 1, and ear plate holes 41 are opened on the ear plates 4, and connecting holes 111 are opened at the ends of the two semicircular rings 11 of the second semicircular ring component 2; the first semicircular ring component 1 and the second semicircular ring component 2 are mirror-symmetrically arranged at the butt joint of the two stainless steel round tubes 3, and the left and right sides are respectively located on the outside of the two stainless steel round tubes 3; the end of the second semicircular ring component 2 extends into the ear plate 4, and is connected with the end of the first semicircular ring component 1, and is connected through a connecting piece through which the connecting hole 111 and the ear plate hole 41 are penetrated, and the bolt 5 penetrates the screw hole 121 and the nut 13 abuts against the stainless steel round tube 3.

[0021] Although the 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 stainless steel round tube roundness and centering tool, characterized in that: comprising a first semicircular ring component and a second semicircular ring component, The first semicircular ring assembly and the second semicircular ring assembly each include two semicircular rings arranged in parallel and spaced apart from each other, a plurality of supporting ribs are connected between the two semicircular rings, a plurality of screw holes are arranged at intervals on each of the supporting ribs, and a nut is fixed on one side of the screw hole; ear plates are symmetrically fixed on both sides of the end portions of the two semicircular rings of the first semicircular ring assembly in a thickness direction, ear plate holes are provided on the ear plates, and connecting holes are provided on the ends of the two semicircular rings of the second semicircular ring assembly; the first semicircular ring assembly and the second semicircular ring assembly are mirror-symmetrically arranged at the butt joint of the two stainless steel round tubes, and the left and right sides are respectively located on the outside of the two stainless steel round tubes; the end portion of the second semicircular ring assembly extends into the ear plate, butts with the end portion of the first semicircular ring assembly, and is connected by a connecting piece through which the connecting hole and the ear plate hole are penetrated, and the bolt penetrates the screw hole and the nut abuts against the stainless steel round tube.

2. A stainless steel round tube roundness and centering tool according to claim 1, characterized in that: The support ribs on the first semicircular ring component and the second semicircular ring component are symmetrically arranged, and the distance between two adjacent support ribs on the same semicircular ring component is equal.

3. A stainless steel round tube roundness and centering tool according to claim 2, characterized in that: The number of supporting ribs on the first semicircular ring assembly and the second semicircular ring assembly are both three.

4. A stainless steel round tube roundness and centering tool as claimed in claim 3, characterized in that: The number of screw holes on each of the supporting ribs is two, and the two screw holes are symmetrically arranged relative to the center line of the supporting ribs.

5. The stainless steel round tube roundness and centering tool according to claim 1, characterized in that: The nut is located on a side of the screw hole close to the stainless steel round tube.

Images