Pipe flange installation positioning device and positioning method

Abstract

The application discloses a pipe flange installation positioning device and a positioning method. The positioning device comprises a pipe and a flange, a support and an adjusting rod are arranged in the inner cavities of the pipe and the flange, the lower end of the support is fixedly connected with a screw rod, the inside of the adjusting rod is provided with a screw hole, the screw hole is matched with the screw rod on the support, a welding gap control mechanism is arranged on the outer ring surface of the pipe, the front section of the welding gap control mechanism is inserted into the welding interval between the pipe and the flange, and the positioning method for positioning the pipe flange by using the positioning device is also disclosed. The pipe flange installation positioning device and the positioning method can realize the positioning and welding of the flange and the pipe by only one person, the centering and the concentricity error are small, the construction safety is high, and the work efficiency of workers is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of shipbuilding, in particular to a pipe flange installation positioning device and positioning method in the shipbuilding process. BACKGROUND

[0002] Most of the flanges between the ship pipes are connected, and the flanges are correctly welded on both ends of the pipe in the workshop. In the field, only the flanges on the two pipes need to be aligned and connected by bolts. Due to various reasons, some pipes need to be installed on the flange in the field first, and then connected between the pipes.

[0003] Due to the constraints of construction conditions, this part of the construction work in the field usually needs to be completed by two people. One of them holds the flange and aligns the pipe with the same inner diameter, and the other completes the welding connection. This not only wastes physical strength, but also affects work efficiency. In addition, because the eyes are used to align the center of the flange and the pipe, a large eccentricity error is easily caused. If a larger size flange is installed, due to the instability of manual holding, safety accidents such as collision, extrusion and falling are more likely to occur. SUMMARY

[0004] In order to overcome the deficiencies of manual installation of pipe flanges in the prior art, a pipe flange installation positioning device and installation method are provided. The positioning device and the pipe flange installation method aim to solve the problems of difficult positioning and poor positioning stability of the pipe flange before welding in the above background technology, strive to achieve the goal of small concentricity error after the pipe flange installation is centered, and improve the work efficiency of workers.

[0005] In order to achieve the above invention purpose, the technical scheme provided by the present application is as follows:

[0006] The present application first provides a pipe flange installation positioning device. The outfitting parts on the ship include pipes and flanges. The inner cavities of the pipes and flanges are provided with supports and adjusting rods. The lower end of the support is fixedly connected with a screw rod. The adjusting rod is internally provided with a screw hole matched with the screw rod on the support.

[0007] The outer surface of the pipe is provided with a welding gap control mechanism. The front section of the welding gap control mechanism is inserted into the welding gap between the pipe and the flange. The welding gap control mechanism includes two semicircular clamps symmetrically arranged on the left and right of the pipe axis as the base point. The end of the semicircular clamps close to each other penetrates the screw rod and is locked. The front section of the semicircular clamps away from each other is fixedly provided with a sleeve. The inner cavity of the sleeve is movably connected with a movable rod.

[0008] The front end of the movable rod is rotationally connected with a plug clamped in the gap between the pipe and the flange, the rear surface of the plug is provided with a groove, and 3-7 magnetic sheets are connected in the groove.

[0009] Preferably, the vertical section of the support is in the shape of "V", and the top of the support is fixed with a first support surface and a second support surface on the left and right sides, and the first support surface and the second support surface on the support are mirror images along the center of the support, wherein the extension surfaces of the first support surface and the second support surface do not intersect, and the ends of the first support surface and the second support surface are away from each other and are rounded.

[0010] Preferably, the support is located at the opening to be welded of the pipe, and the front section of the support protrudes out of the opening of the pipe, so that the first support surface and the second support surface are parallel to the axis of the pipe, and the ends of the first support surface and the second support surface are in abutment with and tangent to the inner wall of the pipe, and the ends of the first support surface and the second support surface are in abutment with and tangent to the inner wall of the flange, so that the pipe and the flange are concentric.

[0011] Preferably, the screw hole depth on the adjusting rod is greater than the length of the screw rod on the support, the flange is a circular flange, and the inner diameter of the flange is consistent with the inner diameter of the pipe.

[0012] Preferably, the pipe and the flange have a welding spacing of 0.5-1mm.

[0013] Preferably, the top end and the bottom end of the semicircular clamp are provided with screw holes for the lead screw to penetrate, and the outer circle of the section of the lead screw outside the screw hole is locked with a nut.

[0014] Preferably, the side surface of the semicircular clamp away from each other is fixed with a protrusion, and the front surface of the protrusion is fixedly connected with the rear end surface of the sleeve; the side surface of the semicircular clamp close to each other is fixed with a piece of silica gel pad through an adhesive, and 2-3 grooves are formed on the inner side surface of the silica gel pad to increase the clamping force with the outer circle of the pipe.

[0015] Preferably, the inner cavity of the sleeve is fixed with a rubber sleeve through an adhesive, and the inner cavity side wall of the rubber sleeve is in contact with the outer circle surface of the movable rod.

[0016] Preferably, the material of the plug is iron, cobalt, nickel, etc., and the magnetic sheets in the groove are connected with the plug by magnetic attraction, the thickness of the plug is 0.5mm, the depth of the groove is 0.2mm, and the thickness of the magnetic sheet is 0.1mm.

[0017] The application also provides a pipe flange installation positioning method, which uses the above-mentioned special positioning installation device to realize the installation of the pipe flange, and has the following implementation steps:

[0018] S1, the pipe to be welded is placed horizontally and suspended, and the suspended height is not less than the radius of the flange;

[0019] S2, the bracket is placed at the opening of the pipe, and the front section of the bracket is extended out of the front opening of the pipe, so that the first support surface and the second support surface are parallel to the axis of the pipe;

[0020] S3, the adjusting rod is rotated clockwise and the bracket is raised, so that the ends of the first support surface and the second support surface above the bracket abut against the inner wall of the pipe, and the arc-shaped chamfered end surface of the first support surface and the second support surface is tangent to the inner wall of the pipe;

[0021] S4, the two halves of the semicircular clamp are clamped on the outer ring of the pipe by the cooperation of the screw rod and the nut, the movable rod is moved forward and backward in the sleeve, and the plug is rotated and located in the gap between the pipe and the flange, and the welding distance between the pipe and the flange is controlled to be 0.5-1mm by increasing the number of magnetic sheets;

[0022] S5, the flange is placed on the bracket extending out of the front opening of the pipe, and the angle position of the flange hole on the flange is adjusted according to the actual situation;

[0023] S6, due to the positioning effect of the bracket, the inner wall of the flange is tangent to the arc-shaped chamfered end surface of the first support surface and the second support surface, and the flange and the pipe are concentric;

[0024] S7, a single person performs welding operation to connect the pipe and the flange;

[0025] S8, the adjusting rod is rotated counterclockwise and the height of the bracket is lowered, so that the ends of the first support surface and the second support surface are separated from the inner wall of the pipe, and the connection between the semicircular clamps is released to be taken off from the outer surface of the pipe.

[0026] From the above technical solution, the pipe flange installation positioning device and the positioning method provided by the application compared with the prior art, the application has the following beneficial technical effects in practical application in production:

[0027] The pipe flange installation positioning device and the positioning method can realize the positioning and welding of the flange and the pipe by only one person, and the centering error and the construction safety are small, and the work efficiency of the workers is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments of the present application or the prior art will be briefly introduced and explained. Obviously, the drawings in the following description are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0029] Figure 1 Overall structure diagram of the pipe flange positioning device;

[0030] Figure 2 Side view diagram of the pipe flange positioning device;

[0031] Figure 3 Diagram of the support frame;

[0032] Figure 4 Diagram of the support in the pipe;

[0033] Figure 5 Diagram of the welding gap control mechanism;

[0034] Figure 6 Diagram of the local parts of the welding gap control mechanism.

[0035] Appendix Figure 1 - Appendix Figure 6 The corresponding relationship of the parts in the above-mentioned drawings is as follows:

[0036] 1, support; 2, adjusting rod; 3, pipe; 4, flange; 5, screw rod; 6, first support surface; 7, second support surface; 8, welding gap control mechanism; 81, semicircular hoop; 82, silica gel pad; 83, protruding block; 84, sleeve; 85, movable rod; 86, plug; 87, groove; 88, screw rod; 89, nut; 810, magnetic sheet; 811, rubber sleeve; 812, groove. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the following described embodiments are only some of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0038] In order to more clearly illustrate the technical solutions and implementation modes of the present application, the following introduces several preferred specific embodiments for implementing the technical solutions of the present application.

[0039] Embodiment 1

[0040] The embodiment is a preferable technical scheme of a pipe flange installation positioning device.

[0041] The installation positioning device in the embodiment is applied in pipe flange installation construction and is a fitting part in shipbuilding. The structural components of the pipe flange include a pipe 3 and a flange 4. The inner cavities of the pipe 3 and the flange 4 are provided with a support 1 and an adjusting rod 2. The lower end of the support 1 is fixedly connected with a screw rod 5. The adjusting rod 2 is internally provided with a screw hole which is matched with the screw rod 5 on the support 1.

[0042] A welding gap control mechanism 8 is arranged on the outer surface of the pipe 3. The front section of the welding gap control mechanism 8 is inserted into the welding gap between the pipe 3 and the flange 4. The welding gap control mechanism 8 includes two semicircular clamps 81 which are symmetrically arranged left and right with the pipe 3 axis as the base point. The semicircular clamps 81 are penetrated by a screw rod 88 at the end close to each other and are locked to each other. The front section of the side away from each other of the semicircular clamps 81 is fixedly provided with a sleeve 84. The inner cavity of the sleeve 84 is movably connected with a movable rod 85. The front end of the movable rod 85 is rotatably connected with a plug 86 clamped in the gap between the pipe 3 and the flange 4. The rear surface of the plug 86 is provided with a groove 812. The inside of the groove 812 is connected with 3-7 magnetic sheets 810.

[0043] The vertical section of the support 1 is in the shape of “V”. The top of the support 1 is fixedly provided with a first support surface 6 and a second support surface 7 on the left and right sides. The first support surface 6 and the second support surface 7 on the support 1 are symmetrically arranged left and right along the center of the support 1. The extension surfaces of the first support surface 6 and the second support surface 7 do not intersect. The ends of the first support surface 6 and the second support surface 7 are away from each other and are chamfered.

[0044] The support 1 is located at the to-be-welded opening of the pipe 3 and the front section of the support 1 is out of the opening of the pipe 3. The first support surface 6 and the second support surface 7 are parallel to the axis of the pipe 3. The ends of the first support surface 6 and the second support surface 7 are in abutment with and tangent to the inner wall of the pipe 3. The ends of the first support surface 6 and the second support surface 7 are in abutment with and tangent to the inner wall of the flange 4, so that the pipe 3 and the flange 4 are concentric.

[0045] The depth of the screw hole on the adjusting rod 2 is greater than the length of the screw rod 5 on the support 1. The flange 4 is a circular flange. The inner diameter of the flange 4 is consistent with the inner diameter of the pipe 3. The welding gap between the pipe 3 and the flange 4 is 0.5-1 mm.

[0046] The top end and the bottom end of the half-circular clamps 81 are provided with screw holes for the lead screw 88 to pass through, and the outer part of the lead screw 88 is locked by a nut 89. The side surface of the half-circular clamps 81 away from each other is fixed with a protrusion 83, and the front side surface of the protrusion 83 is fixedly connected with the rear end surface of the sleeve 84. The side surface of the half-circular clamps 81 close to each other is fixed with a piece of silica gel pad 82 through adhesive, and 2-3 grooves 87 are formed on the inner side surface of the silica gel pad 82 to increase the clamping force of the outer circle of the pipe fitting 3.

[0047] The inner cavity of the sleeve 84 is fixed with a rubber sleeve 811 through adhesive, and the inner cavity side wall of the rubber sleeve 811 is in contact with the outer circle surface of the movable rod 85. The material of the plug sheet 86 includes but is not limited to iron, cobalt, and nickel, and the magnetic sheet 810 inside the groove 812 is magnetically connected with the plug sheet 86. The thickness of the plug sheet 86 is 0.5 mm, the depth of the groove 812 is 0.2 mm, and the thickness of the magnetic sheet 810 is 0.1 mm.

[0048] Embodiment 2

[0049] The present embodiment is a better technical scheme of a pipe fitting flange installation and positioning method, and the implementation basis of the process is the installation and positioning device designed in embodiment 1.

[0050] During the installation process, the pipe fitting 3 to be welded needs to be placed horizontally and suspended, and the suspension height is not less than the radius of the flange 4. Then, the support 1 is placed at the opening of the pipe fitting 3, and the front segment of the support 1 is stretched out of the front opening of the pipe fitting 3, so that the first support surface 6 and the second support surface 7 are parallel to the axis of the pipe fitting 3. Then, the adjusting rod 2 is rotated clockwise, and the support 1 is raised, so that the ends of the first support surface 6 and the second support surface 7 above the support 1 are in abutment with the inner wall of the pipe fitting 3, and the circular arc chamfer end surface of the first support surface 6 and the second support surface 7 is tangent to the inner wall of the pipe fitting 3.

[0051] In the present embodiment, the two pieces of half-circular clamps 81 are clamped on the outer circle of the pipe fitting 3 through the cooperation of the lead screw 88 and the nut 89, the movable rod 85 is moved forward and backward in the sleeve 84, and the plug sheet 86 is rotated and located in the gap between the pipe fitting 3 and the flange 4. The number of magnetic sheets 810 is increased to control the welding distance between the pipe fitting 3 and the flange 4 to be 0.5-1 mm.

[0052] Then, the flange 4 is placed on the support 1 stretched out of the front end of the pipe fitting 3, and the angle position of the flange hole on the flange 4 is adjusted according to the actual situation. Due to the positioning effect of the support 1, the inner wall of the flange 4 is tangent to the circular arc chamfer end surface of the first support surface 6 and the second support surface 7, so that the flange 4 and the pipe fitting 3 are in concentric position.

[0053] Finally, the single person performs the welding operation to connect the pipe 3 and the flange 4. After completion, the adjusting rod 2 is rotated counterclockwise and the height of the support 1 is lowered so that the ends of the first and second support surfaces 6 and 7 are disengaged from the inner wall of the pipe 3 and the connection between the half-circular clamps 81 is released to remove the pipe 3 from the outer surface.

[0054] The present application is not limited to the above-mentioned best mode, and any person should know that the structural changes made under the inspiration of the present application, any technical solutions with the same or similar to the present application, fall within the scope of the present application. Finally, it should be noted that the structure, proportion, size, etc. shown in the drawings of the present application are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and are not used to define the limiting conditions of the implementation of the present application, so they do not have substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

Claims

1. A pipe fitting flange installation and positioning device, wherein the outfitting components on a ship include pipe fittings (3) and flanges (4), characterized in that, A bracket (1) and an adjusting rod (2) are provided in the inner cavity of the pipe fitting (3) and the flange (4). The lower end of the bracket (1) is fixedly connected to a screw (5). The adjusting rod (2) has a screw hole inside, which matches the screw (5) on the bracket (1). A welding gap control mechanism (8) is provided on the outer ring surface of the pipe fitting (3). The front section of the welding gap control mechanism (8) is inserted into the welding gap between the pipe fitting (3) and the flange (4). The welding gap control mechanism (8) includes two semi-circular clamps (81) arranged symmetrically on the left and right with the axis of the pipe fitting (3) as the base point. The ends of the semi-circular clamps (81) that are close to each other are connected by threaded rods (88) and locked together. The front sections of the semi-circular clamps (81) that are far apart from each other are fixed with sleeves (84). The inner cavity of the sleeves (84) is movably connected with movable rods (85). Among them, the front end of the movable rod (85) is rotatably connected to a plug (86) that is stuck in the gap between the pipe fitting (3) and the flange (4). The rear surface of the plug (86) is provided with a groove (812), and 3-7 magnetic pieces (810) are connected inside the groove (812). The vertical cross section of the bracket (1) is "V" shaped, and the top left and right sides of the bracket (1) are fixed with a first support surface (6) and a second support surface (7). The first support surface (6) and the second support surface (7) on the bracket (1) are mirror images of each other along the center of the bracket (1). The extension surfaces of the first support surface (6) and the second support surface (7) do not intersect, and the ends of the first support surface (6) and the second support surface (7) are far apart from each other and rounded. The bracket (1) is located at the opening to be welded in the pipe fitting (3) and the front part of the bracket (1) extends out of the opening of the pipe fitting (3). The first support surface (6) and the second support surface (7) are parallel to the axis of the pipe fitting (3). The ends of the first support surface (6) and the second support surface (7) are tangent to the inner wall of the pipe fitting (3) after they abut against it. The ends of the first support surface (6) and the second support surface (7) are tangent to the inner wall of the flange (4) after they abut against it, so that the pipe fitting (3) and the flange (4) are concentric.

2. The pipe fitting flange installation and positioning device according to claim 1, characterized in that, The depth of the screw hole on the adjusting rod (2) is greater than the length of the screw (5) on the bracket (1), the flange (4) is a circular flange, and the inner diameter of the flange (4) is consistent with the inner diameter of the pipe fitting (3).

3. The pipe fitting flange installation and positioning device according to claim 1, characterized in that, The pipe fitting (3) and the flange (4) have a welding gap of 0.5-1mm.

4. The pipe fitting flange installation and positioning device according to claim 1, characterized in that, The semi-circular clamp (81) is provided with screw holes at the top and bottom for the lead screw (88) to pass through, and a nut (89) is locked on the outer ring of the section of the lead screw (88) outside the screw hole.

5. A pipe fitting flange installation and positioning device according to claim 1, characterized in that, The semicircular clamps (81) are all fixed with protrusions (83) on the opposite sides of their surfaces, and the front surface of the protrusions (83) is fixedly connected to the rear end face of the sleeve (84); the semicircular clamps (81) are all fixed with a silicone pad (82) by adhesive on the opposite sides of their surfaces, and 2-3 grooves (87) are opened on the inner surface of the silicone pad (82) to increase the clamping force with the outer ring of the pipe fitting (3).

6. The pipe fitting flange installation and positioning device according to claim 1, characterized in that, The inner cavity of each sleeve (84) is fixed with a rubber sleeve (811) by an adhesive, and the inner wall of the rubber sleeve (811) is in contact with the outer ring surface of the movable rod (85).

7. The pipe fitting flange installation and positioning device according to claim 1, characterized in that, The plug (86) is made of materials including but not limited to iron, cobalt, and nickel, and the magnetic sheet (810) inside the groove (812) is magnetically connected to the plug (86) by magnetism. The thickness of the plug (86) is 0.5 mm, the opening depth of the groove (812) is 0.2 mm, and the thickness of the magnetic sheet (810) is 0.1 mm.

8. A method for installing and positioning pipe fitting flanges, characterized in that, This positioning method is applicable to a pipe flange installation positioning device according to any one of claims 1-7, and has the following steps: S1. Place the pipe fitting (3) to be welded horizontally in the air, and make the suspension height not less than the radius of the flange (4); S2. Place the bracket (1) at the opening of the pipe fitting (3) and make the front part of the bracket (1) extend out of the front opening of the pipe fitting (3), so that the first support surface (6) and the second support surface (7) are parallel to the axis of the pipe fitting (3); S3. Rotate the adjusting rod (2) clockwise and raise the bracket (1) so that the ends of the first support surface (6) and the second support surface (7) above the bracket (1) abut against the inner wall of the pipe fitting (3). At this time, the arc-shaped chamfered end faces of the first support surface (6) and the second support surface (7) are tangent to the inner wall of the pipe fitting (3). S4. By using the screw (88) and nut (89) to tighten the two semi-circular clamps (81) on the outer ring of the pipe fitting (3), move the movable rod (85) back and forth inside the sleeve (84), and let the plug (86) rotate and be located in the gap between the pipe fitting (3) and the flange (4). By increasing the number of magnetic plates (810), control the welding distance between the pipe fitting (3) and the flange (4) to be 0.5~1mm. S5. Place the flange (4) on the bracket (1) outside the front port of the protruding pipe fitting (3), and adjust the angle position of the flange hole on the flange (4) according to the actual situation. S6. Due to the positioning effect of the bracket (1), the inner wall of the flange (4) is tangent to the arc-shaped chamfered end face of the first support surface (6) and the second support surface (7), and the flange (4) and the pipe fitting (3) are concentric. S7. A single person performs welding operations to connect the pipe fitting (3) and the flange (4). S8. Rotate the adjusting rod (2) counterclockwise and lower the height of the bracket (1) so that the ends of the first support surface (6) and the second support surface (7) are separated from the inner wall of the pipe fitting (3), and untie the connection between the semi-circular clamp (81) and remove it from the outer surface of the pipe fitting (3).

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