Sliding support type double-wall pipe manufacturing tool
Through the combined structure of the inner tube sliding bracket positioning tooling and the inner and outer tube centering tooling, the problem of positioning difficulties and quality hazards during the installation of double-wall pipes is solved, and the rapid and accurate welding is achieved, which improves the production efficiency of double-wall pipes and quality.
Patent Information
- Application Number
- CN202420157940.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-22
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-22
AI Technical Summary
During the installation process of existing sliding bracket double-wall pipes, the positioning and welding of the inner and outer pipes pose a quality hazard, and the circular cross-section leads to difficulty in positioning and clamping, which affects the welding speed and quality.
The inner pipe sliding bracket positioning tooling and inner and outer pipe centering tooling are adopted. Through the combined structure of radial limit blocks, axial stop blocks, inner pipe centering support and outer pipe centering limit blocks, the inner pipe centering support blocks are realized. Accurate positioning and quick welding to avoid damage and friction of the liner.
It improves the welding speed and quality of double-wall pipes, is easy to use, shortens the production cycle, reduces project construction costs, and enhances craftsmanship efficiency.
Smart Images
Figure CN222176566U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline preparation tooling equipment, in particular to a sliding bracket type double-wall pipe production tooling. Background Art
[0002] In accordance with the requirements of IMO and classification societies, the gas pipes in the machinery space adopt double-walled pipes. Once the inner pipe leaks, there is an outer pipe to isolate and protect it, reducing the risk of fire and explosion.
[0003] At present, in order to ensure that the inner tube has sufficient support, a certain number (usually 3 or 4) of sliding brackets (sliding bracket type double wall tube) or fixed brackets (fixed bracket type double wall tube) are evenly arranged in the radial direction between the inner and outer tubes of the double wall tube. The sliding bracket type double wall tube has a PTFE liner between the inner and outer tubes to avoid direct contact between the inner and outer tubes and serious friction caused by different elongation.
[0004] In order to ensure the installation quality of the sliding bracket type double-walled pipe, during the prefabrication in the workshop, it is necessary not only to evenly position the bracket on the outer wall of the inner pipe, but also to ensure that the PTFE liner of the double-walled pipe is not displaced or damaged during the prefabrication stage in the workshop, causing quality risks. In addition, since the cross-sections of the inner and outer pipes are circular, it is very troublesome to position and clamp them.
[0005] In the document ZL 201921772422, a stainless steel double-wall pipe installation tool is disclosed, including a support plate and an anti-tilt elbow plate. The support plate is a rectangular steel plate, and the anti-tilt elbow plate is a trapezoidal steel plate. The anti-tilt elbow plates are arranged on both sides of the bottom of the support plate, and the anti-tilt elbow plates are arranged vertically relative to the support plate; a notch is arranged at the upper end of the support plate, and the notch is an arc-shaped groove, and the cross-section of the notch is a quarter of a circle. The notch is arranged at the corner of the upper end of the support plate. When this structure is used to abut the pipeline, since the shape of the notch is a quarter of a circle, when the pipeline is clamped, it is easy to cause the pipeline to rotate, and it cannot be quickly positioned.
[0006] Therefore, a new technical solution is needed to solve the above technical problems. Utility Model Content
[0007] In order to solve the above problems, the utility model discloses a sliding bracket type double-wall pipe production tooling, which can improve the welding between the inner pipe and the outer pipe during production and assembly through the mutual cooperation between the inner pipe sliding bracket positioning tooling and the inner and outer pipe centering tooling, and improve the welding speed of the double-wall pipe. It is easy to use and quick to disassemble and assemble, which greatly improves the production efficiency of the double-wall pipe, saves the double-wall pipe production cycle, and reduces the project construction cost.
[0008] The technical solution of the utility model is: a sliding bracket type double-wall tube manufacturing tooling, including an inner tube sliding bracket positioning tooling and an inner and outer tube centering tooling, the inner tube sliding bracket positioning tooling includes a radial limit block, a short tube a and an axial stopper, the inner and outer tube centering tooling includes an inner tube centering support, a short tube b and an outer tube centering limit block, the radial limit block is located inside the short tube a, the axial stopper is located outside the radial limit block, the inner tube centering support is located inside the short tube b, and an outer tube centering limit block is provided outside the short tube b.
[0009] By adopting the above technical solution, the inner tube bracket is clamped through the inner tube sliding bracket positioning tooling, and then the inner tube is fixed, so that the inner tube bracket is welded to the inner tube conveniently. After the inner tube bracket is welded to the inner tube, the inner tube sliding bracket positioning tooling is removed, and then the inner and outer tube centering tooling is clamped to the outside of the inner tube, and then the outer tube is clamped into the outer tube centering limit block, and the outer tube is welded to the outside of the inner tube.
[0010] Preferably, the radial limit blocks are grouped in pairs, and the radial limit blocks in each group are evenly arranged on the inner wall of the short tube a in an equilateral triangle with the center of the short tube a as the center.
[0011] By adopting the above technical solution, the radial limit blocks are evenly distributed on the side wall of the short tube a, so that the inner tube can be directly clamped to the inner side of the radial limit blocks, making it convenient to weld the inner tube bracket clamped between the radial limit blocks to the inner tube.
[0012] Preferably, a bevel inclined toward the outside is provided at the bottom of the radial limit block, and the bevel at the bottom of the radial limit block is located on the outer diameter of the same inner tube. The inner side of the opposite side between each group of radial limit blocks is perpendicular to the tangent direction of the short tube a, and there is an upward inclined surface between the inner side and the bevel.
[0013] By adopting the above technical solution, the beveled edges at the bottom of each set of radial limit blocks can fit and snap onto the outer diameter of the inner tube, the side edges between the radial limit blocks are used to snap onto the inner tube bracket, and the space between the beveled edges is used for welding the inner tube bracket.
[0014] Preferably, a spacing is provided between the inner sides of the radial limit blocks, and the spacing is used to place the gasket and the inner tube support, and the bottom end surface of the inner tube support is not higher than the outer side of the hypotenuse end.
[0015] By adopting the above technical solution, the spacing between the radial limit blocks can be used to clamp the gasket and the inner tube bracket, which is convenient for welding the inner tube bracket to the inner tube at a later stage.
[0016] Preferably, the axial stopper is located on the inner side wall of the short tube a outside the radial limit block, a spacing is provided between the axial stopper and the radial limit block, and the axial stopper is located above the radial limit block.
[0017] By adopting the above technical solution, when the inner tube is placed in the short tube a, the axial stopper limits the inner tube in the axial direction to prevent the inner tube from axially displacing, so that the inner tube is clamped in the inner tube sliding bracket positioning tooling.
[0018] Preferably, the inner tube centering supports are evenly distributed at the outer end of the short tube b, the inner tube centering supports are in the form of a triangle facing the axis of the short tube b, and the inner tube centering supports are in the form of an equilateral triangle with the axis of the short tube b as the center.
[0019] By adopting the above technical solution, after the inner tube bracket is welded on the inner tube, the inner tube sliding bracket positioning tooling is removed, and then the inner and outer tube centering tooling is put on the welded inner tube end. The inner tube end is blocked by the inner tube centering support to prevent axial displacement.
[0020] Preferably, an outer tube centering limit block is provided on the outer side of the short tube b, and the outer tube centering limit block is evenly distributed on the outer side of the short tube b. The outer tube centering limit block is located in the middle of the staggered position of the inner tube centering support.
[0021] By adopting the above technical solution, the outer tube is sleeved on the outside of the inner tube after the inner tube bracket is welded. Since the diameters of the outer tube and the short tube b are consistent, they are just clamped on the inner side of the outer tube centering limit block for rapid centering positioning, making it easier for the outer tube to be welded to the outside of the inner tube.
[0022] Preferably, the outer end of the outer tube centering limit block is located outside the end of the short tube b, that is, the outer tube centering limit block protrudes from the side of the short tube b.
[0023] By adopting the above technical solution, it is convenient for the outer tube to be clamped in the outer tube centering limit block, so that it is convenient for the outer tube to be welded to the inner tube in the later stage.
[0024] Preferably, the short tube a and the short tube b are both made of the outer tube material to be made outside the inner tube, that is, the diameters of the short tube a and the short tube b are consistent with the diameter of the outer tube.
[0025] By adopting the above technical solution, when the short tube a is clamped to the inner tube, the inner tube can be directly and accurately clamped in the radial limit block, and the outer tube centering limit block outside the short tube b is just clamped on the outside of the outer tube to be welded.
[0026] The benefits of the utility model are as follows: 1. The bevel at the bottom of the radial limit block in the short tube a of the utility model is used to abut the outer diameter of the inner tube, which is convenient for positioning the inner tube, and the axial stopper on the short tube a can prevent the inner tube from shifting in the lateral direction, which is convenient for positioning the inner tube.
[0027] 2. The utility model can prevent the inner tube from being axially positioned by the inner tube centering support, and the outer tube centering limit block outside the short tube b can quickly position the outer tube, thereby increasing the welding speed between the outer tube and the inner tube and completing the production of the double-wall tube.
[0028] 3. The liner of the utility model is wrapped on the inner tube support and then clamped to the position between each set of radial limit blocks to avoid friction and effectively protect the liner and the inner tube support.
[0029] 4. The utility model can improve the welding between the inner tube and the outer tube during the production and assembly, and improve the welding speed of the double-walled tube through the mutual cooperation between the inner tube sliding bracket positioning tooling and the inner and outer tube centering tooling. It is easy to use and quick to disassemble and assemble, which greatly improves the production efficiency of the double-walled tube, saves the production cycle of the double-walled tube, and reduces the project construction cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 This is a structural schematic diagram of the inner tube sliding bracket positioning tooling of the utility model;
[0031] Figure 2 For this utility model Figure 1 Structural diagram of the usage status;
[0032] Figure 3 For this utility model Figure 1 A schematic diagram of the structure of a cross-section view;
[0033] Figure 4 This is a schematic diagram of the structure of the inner and outer tube centering tooling of the utility model;
[0034] Figure 5 For this utility model Figure 4 Schematic diagram of the structure from the side view.
[0035] Among them: 1. radial limit block, 1-1. bevel, 1-2. inclined surface, 2. short tube a, 3. axial stopper, 4. inner tube centering support, 5. short tube b, 6. outer tube centering limit block, 7. inner tube bracket, 8. gasket, 9. inner tube. DETAILED DESCRIPTION
[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0037] like Figure 1-5As shown, a sliding bracket type double-wall tube manufacturing tooling includes an inner tube sliding bracket positioning tooling and an inner and outer tube centering tooling, the inner tube sliding bracket positioning tooling includes a radial limit block 1, a short tube a2 and an axial stop block 3, the inner and outer tube centering tooling includes an inner tube centering support 4, a short tube b5 and an outer tube centering limit block 6, the radial limit block 1 is located inside the short tube a2, the axial stop block 3 is located outside the radial limit block 1, the inner tube centering support 4 is located inside the short tube b5, and an outer tube centering limit block 6 is provided outside the short tube b5, the inner tube bracket 7 is clamped with the inner tube sliding bracket positioning tooling, and then the inner tube is fixed to facilitate the welding of the inner tube bracket 7 to the inner tube 9, when the inner tube bracket 7 is welded to the inner tube 9, the inner tube sliding bracket positioning tooling is removed, and then clamped to the outside of the inner tube 9 by the inner and outer tube centering tooling, and then the outer tube is clamped into the outer tube centering limit block 6, and the outer tube is welded to the outside of the inner tube 9.
[0038] The radial limit blocks 1 are grouped in pairs, and each group of radial limit blocks 1 is evenly arranged on the inner wall of the short tube a2 in an equilateral triangle with the center of the short tube a2 as the center. The radial limit blocks 1 are evenly distributed on the side wall of the short tube a2, so that the inner tube can be directly clipped to the inner side surface of the radial limit blocks 1, which facilitates the welding of the inner tube bracket 7 clipped between the radial limit blocks 1 to the inner tube 9.
[0039] A bevel 1-1 inclined toward the outside is provided at the bottom of the radial limit block 1. The bevel 1-1 at the bottom of the radial limit block 1 is located on the outer diameter of the same inner tube 9. The inner side of the opposite side between each group of radial limit blocks 1 is perpendicular to the tangent direction of the short tube a2, and an upwardly inclined slope 1-2 is between the inner side and the bevel 1-1. The bevels 1-1 at the bottom of each group of radial limit blocks 1 can be fit and clamped on the outer diameter of the inner tube 9. The side edges between the radial limit blocks 1 are just used to clamp the inner tube bracket 7, and the space between the bevels 1-1 is just used for welding the inner tube bracket 7.
[0040] A spacing is provided between the inner sides of the radial limit blocks 1, and the spacing is used to place the gasket 8 and the inner tube bracket 7. The bottom end surface of the inner tube bracket 7 is not higher than the outer side of the end of the hypotenuse 1-1. The spacing between the radial limit blocks 1 can be used to clamp the gasket 8 and the inner tube bracket 7, which is convenient for the later welding of the inner tube bracket 7 to the inner tube 9.
[0041] The axial stopper 3 is located on the inner side wall of the short tube a2 outside the radial limit block 1. A spacing is provided between the axial stopper 3 and the radial limit block 1. The axial stopper 3 is at the upper position of the radial limit block 1. When the inner tube 9 is placed in the short tube a2, the axial stopper 3 limits the inner tube 9 in the axial direction to prevent the inner tube 9 from axial displacement, so that the inner tube 9 is clamped in the inner tube sliding bracket positioning tooling.
[0042] The inner tube 9 centering supports are evenly distributed at the outer end of the short tube b5. The inner tube 9 centering supports are in the shape of a triangle facing the axis of the short tube b5. The inner tube centering supports 4 are in the shape of an equilateral triangle with the axis of the short tube b5 as the center. After the inner tube support 7 is welded on the inner tube 9, the inner tube sliding support positioning tooling is removed, and then the inner and outer tube centering tooling is put on the welded end of the inner tube 9. The end of the inner tube 9 is blocked by the inner tube centering support 4 to prevent axial displacement.
[0043] An outer tube centering limit block 6 is provided on the outside of the short tube b5. The outer tube centering limit blocks 6 are evenly distributed on the outer side of the short tube b5. The outer tube centering limit block 6 is located in the middle of the staggered position of the inner tube centering support 4. The outer tube is sleeved on the outside of the inner tube 9 to which the inner tube support 7 is welded. Since the diameters of the outer tube and the short tube b5 are the same, they are just clamped on the inner side of the outer tube centering limit block 6 for quick centering positioning, which facilitates the welding of the outer tube to the outside of the inner tube 9.
[0044] The outer end of the outer tube centering limit block 6 is located outside the end of the short tube b5, that is, the outer tube centering limit block 6 protrudes from the side of the short tube b5, which makes it easy for the outer tube to be stuck in the outer tube centering limit block 6 and to be welded to the inner tube 9 later.
[0045] Both the short tube a2 and the short tube b5 are outer tube materials that need to be made outside the inner tube, that is, the diameters of the short tube a2 and the short tube b5 are consistent with the diameter of the outer tube. In this way, when the short tube a2 is clamped with the inner tube 9, the inner tube 9 can be directly and accurately clamped in the radial limit block 1, and the outer tube centering limit block 6 outside the short tube b5 is just clamped on the outside of the outer tube that needs to be welded.
[0046] Working principle: when it is necessary to support a double-walled tube, first put the short tube a of the inner tube sliding bracket positioning tooling on the inner tube, then wrap the sliding bracket 7 with a gasket 8, and put them between the radial limit blocks 1 respectively, and the inner tube is laterally abutted by the axial stop block 3 to prevent the inner tube from displacement, and then the inner tube bracket 7 is welded to the inner tube 9. After the inner tube bracket 7 is spot welded and positioned, the inner tube sliding bracket positioning tooling and the gasket are axially removed, and then the sliding bracket and the inner tube are welded firmly; after welding is completed, the inner tube sliding bracket positioning tooling is removed from the inner tube 9, and then the short tube b5 of the inner and outer tube centering tooling is put on the end of the inner tube 9, and the end of the inner tube 9 abuts on the inner tube centering support 4, and then the outer tube is clamped in the outer tube centering limit block 6 to speed up the centering speed of the outer tube and improve the welding efficiency between the outer tube and the inner tube.
[0047] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention, and the purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the implementation methods of the present invention may be deformed or modified in any way without departing from the principles.
Claims
1. A sliding bracket type double-walled pipe manufacturing tooling, comprising an inner pipe sliding bracket positioning tooling and an inner and outer pipe centering tooling, wherein the inner pipe sliding bracket positioning tooling comprises a radial limit block, a short pipe a and an axial stop block, and the inner and outer pipe centering tooling comprises an inner pipe centering support, a short pipe b and an outer pipe centering limit block, characterized in that: The radial limit block is located inside the short tube a, the axial stop block is located outside the radial limit block, the inner tube centering support is located inside the short tube b, and an outer tube centering limit block is provided outside the short tube b.
2. The sliding bracket type double-wall pipe manufacturing tool according to claim 1, characterized in that: The radial limit blocks are grouped in pairs, and the radial limit blocks in each group are evenly arranged on the inner side wall of the short tube a in an equilateral triangle with the center of the short tube a as the center.
3. The sliding bracket type double-wall pipe manufacturing tool according to claim 2, characterized in that: The bottom of the radial limit block is provided with a bevel inclined toward the outside, and the bevel at the bottom of the radial limit block is located on the outer diameter of the same inner tube. The inner side of the opposite side between each group of radial limit blocks is perpendicular to the tangent direction of the short tube a, and there is an upward inclined surface between the inner side and the bevel.
4. The sliding bracket type double-wall pipe manufacturing tool according to claim 3, characterized in that: A spacing is provided between the inner sides of the radial limit blocks, and the spacing is used to place the gasket and the inner tube support, and the bottom end surface of the inner tube support is not higher than the outer side of the hypotenuse end.
5. The sliding bracket type double-wall pipe manufacturing tool according to claim 1, characterized in that: The axial stopper is located on the inner side wall of the short tube a outside the radial limit block, a spacing is provided between the axial stopper and the radial limit block, and the axial stopper is located above the radial limit block.
6. The sliding bracket type double-wall pipe manufacturing tool according to claim 1, characterized in that: The inner tube centering supports are evenly distributed at the outer end of the short tube b, and are in the form of a triangle facing the axis of the short tube b. The inner tube centering supports are in the form of an equilateral triangle with the axis of the short tube b as the center.
7. The sliding bracket type double-wall pipe manufacturing tool according to claim 1, characterized in that: An outer tube centering limit block is provided on the outer side of the short tube b. The outer tube centering limit block is evenly distributed on the outer side of the short tube b. The outer tube centering limit block is located in the middle of the staggered position of the inner tube centering support.
8. The sliding bracket type double-wall pipe manufacturing tool according to claim 1, characterized in that: The outer end of the outer tube centering limit block is located outside the end of the short tube b, that is, the outer tube centering limit block protrudes from the side of the short tube b.
9. The sliding bracket type double-wall pipe manufacturing tool according to claim 1, characterized in that: The short tube a and the short tube b are both outer tube materials that need to be made outside the inner tube, that is, the diameters of the short tube a and the short tube b are consistent with the diameter of the outer tube.