Simple tool for assembling small-caliber flange and pipeline

Abstract

The utility model discloses a simple tool for assembling a small-caliber flange and a pipeline, and belongs to the field of pipeline welding. The device comprises a flange supporting device and a control device for the groove gap between the flange and the pipeline. The flange supporting device is composed of a single-head bolt, a handle, supporting angle steel and a nut matched with the single-head bolt. The nuts are fixedly connected with the interiors of the supporting angle steel in a welding mode, holes are formed in the foot edges corresponding to the nuts of the supporting angle steel, bolts conveniently penetrate through the supporting angle steel to be connected with the nuts so that the flange supporting device can be placed in a pipeline, and the pipeline supporting device can be tightly supported in the pipeline by rotating the bolts through the handles. After the flange is hung on the angle steel, the gap control device is inserted and supported on the angle steel, the flange is close to the steel wire and the pipeline, and spot welding of the flange and the pipeline can be carried out after the alignment tolerance and the gap meet the requirements.

Description

Technical Field

[0001] The utility model relates to a simple tool for assembling a small-caliber flange and a pipeline, and belongs to the field of pipeline welding. Background Art

[0002] The flange connection of the pipeline is a common connection method. It is sealed with gaskets and fastened with bolts to facilitate inspection, maintenance, cleaning, and the connection, removal and replacement of other equipment. The connection between the flange and the pipeline is generally made by bayonet, thread, welding, etc. This tool is mainly for the welding connection between the flange and the pipeline.

[0003] The connection between the flange and the pipe must be assembled according to the welding operation instructions before welding. The gap and misalignment of the assembly interface must strictly follow the requirements of the welding operation instructions and be guaranteed to be within the deviation range required by the welding operation instructions, otherwise it will affect the quality and process requirements of welding. According to the traditional process, after the pipe is placed horizontally, two brackets need to be welded at the bottom of the outer side of the pipe port to support the flange to be installed, and then gap gaskets are added to the grooves of the pipe and flange for spot welding of the flange and the pipe. The temporary support is removed by grinding with an angle grinder, and the gap gasket is removed before the final welding of the pipe and the flange. Therefore, the traditional assembly method is time-consuming and labor-intensive in the process of adjusting the misalignment and the assembly gap. At the same time, the temporary support will often damage the pipe base material during the removal process, and it is necessary to repair or cut off the pipe end for re-assembly, which has a certain impact on the quality and precision of the pipe fittings. Therefore, a tooling that can ensure quality while saving time, labor, safety, speed and convenience is needed to realize the assembly of the flange and the pipe. Utility Model Content

[0004] The utility model aims to provide a simple tool for assembling a small-diameter flange and a pipeline, which is used to solve the existing technical problems that the small-diameter flange and pipeline assembly is difficult to meet the matching quality requirements and is time-consuming and labor-intensive.

[0005] A simple tool for assembling a small-diameter flange and a pipeline comprises two sets of tooling, one set of tooling is a flange supporting device arranged at the inner upper edge of the pipeline when the flange and the pipeline are assembled; the other set of tooling is a gap control device for assembling the flange and the pipeline.

[0006] In the technical solution of the utility model: the flange supporting device is connected to the bottom of the inner wall of the pipeline by bolts.

[0007] In some specific technical solutions: the flange supporting device includes a single-head bolt, the middle part of the single-head bolt is provided with at least one handle, the upper part is provided with a supporting angle steel, and the top is provided with a nut.

[0008] In some more specific technical solutions: the bolt passes through the supporting angle steel and is connected to the nut, and the nut is fixedly connected to the supporting angle steel.

[0009] In other specific technical solutions: the handle and the single-head bolt are 180 degrees apart. 0 welding.

[0010] In the technical solution of the present invention, the gap control device is M-shaped, and a protruding rod is provided at the concave part of the M-shaped device.

[0011] In some specific technical solutions, the distance between the two long sides of the gap control device is 1 / 2 to 2 / 3 of the pipe diameter, and the length of the two long sides is equal to the diameter of the welded pipe.

[0012] In some of the most specific technical solutions, in the flange support device, the nut and the inside of the supporting angle steel are connected and fixed by welding, and holes are opened at the foot edges corresponding to the nut of the supporting angle steel to facilitate the bolts to pass through the supporting angle steel and connect with the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the overall front view of a simple tooling for assembling a small-diameter flange with a pipe;

[0014] Figure 2 This is a simple tooling overall side view of the small-diameter flange and pipe assembly interface

[0015] Figure 3 It is the main view of the flange support schematic diagram;

[0016] Figure 4 It is a side view of the flange support schematic diagram;

[0017] Figure 5 It is a schematic diagram of the gap control tooling;

[0018] In the figure: 1-flange, 2-gap control device, 3-pipe, 4-flange supporting device, 4-1 single-head bolt, 4-2 two handles, 4-3 supporting angle steel, 4-4 nut. DETAILED DESCRIPTION

[0019] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] like Figures 1 to 4As shown, a simple tool for assembling a small-diameter flange and a pipe includes two sets of devices, one set is a flange support device 4 set at the inner upper edge of the pipe when the flange and the pipe are assembled; the other set is a gap control device 2 for the flange and the pipe. The flange support device 4 is fixedly connected to the bottom of the inner wall of the pipe by bolts. The flange support device 4 includes a single-head bolt 4-1, and at least one handle 4-2 is provided in the middle of the single-head bolt 4-1, a supporting angle steel 4-3 is provided on the upper part, and a nut 4-4 is provided on the top. The bolt 4-1 passes through the supporting angle steel 4-3 and is connected to the nut 4-4, and the nut 4-4 is fixedly connected to the supporting angle steel 4-3. The handle 4-2 is 180 degrees to the single-head bolt 4-1. 0 The gap control device 2 is M-shaped, and a protruding rod is provided at the concave part of the M-shaped. The distance between the two long sides of the gap control device is 1 / 2 to 2 / 3 of the pipe diameter, and the length of the two long sides is equal to the pipe diameter to be welded.

[0021] More specifically, a simple tool for assembling a small-diameter flange and a pipeline includes a flange support 4 and a gap control device 2.

[0022] 1) If Figure 3 The flange supporting device is composed of 4-1 single-head bolt, 4-2 two handles, 4-3 supporting angle steel, and 4-4 nut.

[0023] 2) As described in 1), the supporting angle steel 4-3 is made of angle steel with an angle side length of 30mm and a thickness of 3mm. The material is selected according to the material of the pipeline to avoid contamination of the parent material. The length of the angle steel is twice the thickness of the flange.

[0024] 3) As described in 1), the single-head bolt 4-1 adopts a threaded bolt with a diameter of 15 mm and a nut 4-4 matching the bolt.

[0025] 4) As described in 1), the two handles 4-2 are made of round steel with a diameter of 6 mm and a length of 30 mm.

[0026] 5) Make a hole at the corner edge at 1 / 2 of the length direction of the supporting angle steel, with a diameter 4mm larger than the bolt diameter. Weld the nut 4-4 to the foot of the angle steel, align the bolt hole with the hole of the angle steel, and pass the threaded end of the bolt through the angle steel and connect it to the nut through threads.

[0027] 6) If Figure 5 The gap control tooling uses steel wire of the same material as the pipeline. The diameter of the steel wire is consistent with the assembly gap between the flange and the pipeline required by the welding operation instructions, and is made into Figure 4 The shape of the gap control device, the distance between the two long sides is 2 / 3 of the pipe diameter, and the length of the two long sides is consistent with the diameter of the welded pipe.

[0028] 7) Actual operation sequence

[0029] (1) The flange 1 and the end grooves of the pipe 3 to be assembled have been polished as required;

[0030] (2) Place the flange support device 4 in the pipeline, with the angle steel 4-3 on top of the pipeline, and rotate the bolt 4-1 through the handle 4-2 to tighten the pipeline support device in the pipeline 3;

[0031] (3) Fine-tune and rotate the pipe 3 so that the angle steel is directly above the pipe and fix the pipe;

[0032] (4) Hang flange 1 on angle steel 4-3, as shown in the following figure. Figure 1 As shown, the gap control device 2 is inserted into and supported on the angle steel 4-3;

[0033] (5) Put the flange, steel wire and pipe close together, measure the misalignment and gap to meet the requirements, and then spot weld the flange and pipe;

[0034] (6) After the spot welding is completed, remove the gap control device 2, use the handle 4-2 to loosen the bolt 4-1 to separate the support device from the pipeline, and remove the flange support.

[0035] The utility model solves the problem that the misalignment and assembly gap required for welding in the existing flange and pipeline assembly process are not easy to meet the deviation requirements of the welding operation instruction manual. Through the implementation and application of the tooling, the accuracy of assembly can be guaranteed, the welding quality can be guaranteed, the damage to the parent material in the traditional process can be reduced, and the work efficiency can be improved.

[0036] The above embodiment is a preferred embodiment of the utility model. In other embodiments of the present invention, the length of the screw of the flange support component is selected according to the size of the pipe diameter, and the number of its components corresponds to and is equal to that of the tooling.

[0037] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should be aware that the above embodiments do not limit the protection scope of the utility model in any form, and all technical solutions obtained by equivalent replacement and the like fall within the protection scope of the utility model.

Claims

1. A simple tool for assembling a small-diameter flange and a pipe, characterized in that: It comprises two sets of devices, one set is a flange supporting device (4) arranged at the inner upper edge of the pipeline when the flange and the pipeline are assembled; the other set is a gap control device (2) used for assembling the flange and the pipeline.

2. The simple tooling for assembling a small-diameter flange and a pipe according to claim 1 is characterized in that: The flange support device (4) is fixedly connected to the bottom of the inner wall of the pipeline by means of bolts.

3. The simple tooling for assembling a small-diameter flange and a pipe according to claim 2 is characterized in that: The flange supporting device (4) comprises a single-head bolt (4-1), wherein the middle of the single-head bolt (4-1) is provided with at least one handle (4-2), the upper part is provided with a supporting angle steel (4-3), and the top is provided with a nut (4-4).

4. The simple tooling for assembling a small-diameter flange and a pipe according to claim 3 is characterized in that: The bolt (4-1) passes through the supporting angle steel (4-3) and is connected to the nut (4-4), and the nut (4-4) is fixedly connected to the supporting angle steel (4-3).

5. The simple tooling for assembling a small-diameter flange and a pipe according to claim 3 is characterized in that: The handle (4-2) and the single-head bolt (4-1) are 180 degrees apart. 0 welding.

6. The simple tooling for assembling a small-diameter flange and a pipe according to claim 1 is characterized in that: The gap control device (2) is of M type, and a protruding rod is provided at the concave part of the M type.

7. The simple tooling for assembling a small-diameter flange and a pipe according to claim 1 is characterized in that: The distance between the two long sides of the gap control device is 1 / 2 to 2 / 3 of the pipe diameter, and the length of the two long sides is equal to the diameter of the welded pipe.

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