A welding positioning and inspecting fixture for gas main

Abstract

The application discloses a kind of gas main pipe welding positioning and inspection clamps, comprising: bottom plate;First positioning fixed component, fixedly arranged on the top surface of bottom plate two sides;Second positioning fixed component, fixedly arranged on the top surface of bottom plate;Positioning component, fixedly arranged on the top surface of bottom plate;Positioning inspection component, fixedly arranged on the top surface of bottom plate.The clamp of the application is used for the welding positioning of gas main pipe and the position degree detection of nozzle after welding, accurate positioning, and ensures the welding quality of gas main pipe.

Description

Technical Field

[0001] This invention relates to the field of parts processing technology, and in particular to a gas main pipe welding positioning and inspection fixture. Background Technology

[0002] like Figure 1 The gas manifold shown is a crucial component of an aero-engine, with a diameter exceeding 1 meter. This gas manifold comprises an upper and lower ring pipe located on the same circumference; flanges are welded to the ends of both the upper and lower ring pipes, and adjacent flanges are fixed to mounting plates with bolts; the lower ring pipe consists of two sections, with an intake seat welded between them; machined holes are evenly distributed along the circumference of both the upper and lower ring pipes, and nozzles are welded to each of these machined holes. Due to the large diameter of this gas manifold, controlling its overall precision during welding is challenging. Furthermore, the positional accuracy of the nozzles needs to be checked after welding. Therefore, a fixture is designed for welding positioning of the gas manifold and for checking the positional accuracy of the nozzles after welding, to ensure welding quality and reduce production costs. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a gas main pipe welding positioning and inspection fixture for welding positioning of the gas main pipe and for detecting the position accuracy of the nozzle after welding. The positioning is accurate, thus ensuring the welding quality of the gas main pipe.

[0004] This invention provides a gas main pipe welding positioning and inspection fixture, comprising:

[0005] Base plate;

[0006] The first positioning and fixing component is fixedly disposed on both sides of the top surface of the base plate and is used to position and fix the mounting plates on both sides of the gas main pipe. The first positioning and fixing component includes a first support plate symmetrically fixedly disposed on both sides of the top surface of the base plate. A first positioning plate is fixedly disposed on the top surface of the first support plate. A first through hole is opened on the first positioning plate corresponding to the first mounting hole on the mounting plate. The mounting plate is fixedly connected to the first positioning plate by a first bolt.

[0007] The second positioning and fixing component is fixedly disposed on the top surface of the base plate and is used to position and fix the gas inlet seat of the gas main pipe. The second positioning and fixing component includes a second support plate fixedly disposed on the top surface of the base plate, a second positioning plate fixedly disposed on the top surface of the second support plate, a groove corresponding to the gas inlet seat is opened on the top of the second positioning plate, and second through holes are opened on both sides of the groove corresponding to the second mounting holes on the gas inlet seat. The gas inlet seat is fixedly connected to the second positioning plate by a second bolt.

[0008] A positioning assembly, fixedly mounted on the top surface of the base plate, is used for welding and positioning the upper and lower half-ring pipes of the gas main pipe, and for releasing the positioning of the upper and lower half-ring pipes after welding. The positioning assembly includes several first supports fixedly mounted circumferentially on the top surface of the base plate. The first supports, distributed circumferentially, support the bottom of the upper and lower half-ring pipes. Positioning pins are respectively and closely attached to the inner and outer sides of the upper or lower half-ring pipe on the top surface of the first support. Pin holes are provided on the top surface of the first support corresponding to the positioning pins. The bottom end of the positioning pin is inserted into the corresponding pin hole with clearance fit. An unlocking surface is provided on the side of the positioning pin away from the upper or lower half-ring pipe, which is used to release the positioning of the upper and lower half-ring pipes by rotating the positioning pin 180 degrees.

[0009] A positioning inspection component, fixedly mounted on the top surface of the base plate, is used to position the machined holes of the gas main pipe and the nozzles, and to inspect the positional accuracy of the nozzles after welding. The positioning inspection component includes several second supports fixedly mounted circumferentially on the top surface of the base plate. The second supports are distributed one-to-one with each other on the outside of the nozzles. A bracket is fixedly mounted on the top surface of each second support. A pin sleeve is fixedly mounted on the bracket directly above the corresponding nozzle. A positioning inspection pin is inserted into the pin sleeve with clearance fit. A positioning inspection head with clearance fit to the nozzle orifice is provided at the bottom end of the positioning inspection pin. A limit groove is provided on one side of the positioning inspection pin in the vertical direction. A limit pin is provided on one side of the bracket that passes through the pin sleeve and inserts into the limit groove.

[0010] Furthermore, the base plate has shaped holes.

[0011] Furthermore, the base plate, the first positioning and fixing component, the second positioning and fixing component, the positioning component, and the positioning inspection component are all made of stainless steel.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The fixture of this invention includes a first positioning and fixing component, a second positioning and fixing component, a positioning component, and a positioning inspection component. When welding the gas main pipe, the first positioning and fixing component positions and fixes the mounting plate; the second positioning and fixing component positions and fixes the air inlet seat; the positioning component positions the upper and lower half-ring pipes; and the positioning inspection component positions the machining holes and nozzles. Precise positioning ensures the welding quality of the gas main pipe.

[0014] After the main gas pipe is welded, the positioning assembly is adjusted to release the positioning of the upper and lower half-ring pipes; then, the position accuracy of the nozzles is checked using the positioning inspection assembly. A single set of fixtures achieves welding positioning and inspection, reducing the required equipment and lowering production costs.

[0015] It should be understood that the description in the Summary of the Invention is not intended to limit the key or essential features of the embodiments of the present invention, nor is it intended to restrict the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0016] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the main gas pipeline.

[0018] Figure 2 This is a schematic diagram of the fixture's structure;

[0019] Figure 3 This is a structural schematic diagram of the first positioning and fixing component;

[0020] Figure 4 This is a structural schematic diagram of the second positioning and fixing component;

[0021] Figure 5 This is a structural diagram of the positioning component;

[0022] Figure 6 A schematic diagram of the positioning and inspection components;

[0023] Figure 7 A schematic diagram of the positioning inspection pin;

[0024] Figure 8 This is a schematic diagram of the structure for installing the main gas pipe onto the clamp.

[0025] The diagram labels are as follows: 1. Gas main pipe; 2. Base plate; 3. First positioning and fixing component; 4. Second positioning and fixing component; 5. Positioning component; 6. Positioning inspection component.

[0026] 11. Upper half-ring pipe; 12. Lower half-ring pipe; 13. Flange; 14. Mounting plate; 15. Air inlet seat; 16. Machining hole; 17. Nozzle; 18. Spray hole;

[0027] 21. Hole;

[0028] 31. First support plate; 32. First positioning plate; 33. First through hole; 34. First bolt;

[0029] 41. Second support plate; 42. Second positioning plate; 43. Groove; 44. Second bolt;

[0030] 51. First support; 52. Locating pin; 53. Unlocking surface;

[0031] 61. Second support; 62. Bracket; 63. Pin sleeve; 64. Positioning inspection pin; 65. Positioning inspection head; 66. Limiting groove; 67. Limiting pin. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] Please refer to Figures 1-8 An embodiment of the present invention provides a gas main pipe welding positioning and inspection fixture, comprising:

[0035] Base plate 2;

[0036] The first positioning and fixing component 3 is fixedly installed on both sides of the top surface of the base plate 1 and is used to position and fix the mounting plates 14 on both sides of the gas main pipe 1.

[0037] The second positioning and fixing component 4 is fixedly installed on the top surface of the base plate 1 and is used to position and fix the gas inlet seat 15 of the gas main pipe 1.

[0038] Positioning component 5 is fixedly installed on the top surface of base plate 1 and is used to weld and position the upper half ring pipe 11 and the lower half ring pipe 12 of the gas main pipe 1, as well as to release the positioning of the upper half ring pipe 11 and the lower half ring pipe 12 after welding connection.

[0039] The positioning inspection component 6 is fixedly installed on the top surface of the base plate 1. It is used to position the machined hole 16 of the gas main pipe 1 and the nozzle 17, and to detect the position of the nozzle 17 after welding.

[0040] In this embodiment, for example Figure 1 When the gas main pipe 1 shown is welded, the flange 13 is first fixed to the mounting plate with bolts, and then the two mounting plates 14 are positioned and fixed by the first positioning and fixing component 3; the air inlet seat 15 is positioned and fixed by the second positioning and fixing component 4.

[0041] Then, the positioning component 5 is used to position the upper half-ring pipe 11 and the lower half-ring pipe 12, aligning the end of the upper half-ring pipe 11 with the flange 13 and the lower half-ring pipe 12 with the flange 13 and the air inlet seat 15. Next, the positioning inspection component 6 is used to position the machining holes 16 on the upper half-ring pipe 11 and the lower half-ring pipe 12, and each machining hole 16 is machined one by one. Then, the positioning inspection component 6 is used to position each nozzle 17. At this point, the gas main pipe 1 can be welded together. Precise positioning ensures the welding quality of the gas main pipe 1.

[0042] After the gas main pipe 1 is welded, the positioning component 5 is adjusted to release the positioning of the upper half-ring pipe 11 and the lower half-ring pipe 12; then the positioning inspection component 6 is used to inspect the position of the nozzle 17. The fixture of this application eliminates the need for additional inspection equipment, and achieves welding positioning and inspection through a set of fixtures, reducing the required equipment and lowering production costs.

[0043] In a preferred embodiment, such as Figure 2 As shown, the base plate 2 has a shaped hole 21, which effectively reduces the weight of the fixture while ensuring that the structural strength of the base plate 2 meets the requirements.

[0044] In a preferred embodiment, such as Figure 2 and Figure 3 As shown, the first positioning and fixing component 3 includes a first support plate 31 symmetrically fixed on both sides of the top surface of the base plate 2. A first positioning plate 32 is fixedly installed on the top surface of the first support plate 31. A first through hole 33 is opened on the first positioning plate 32 corresponding to the first mounting hole on the mounting plate 14. The mounting plate 14 is fixedly connected to the first positioning plate 32 by a first bolt 34.

[0045] In this embodiment, after the flange 13 is fixedly connected to the mounting plate 14 by bolts, the first mounting hole on the mounting plate 14 is aligned with the first through hole 33, and the mounting plate 14 is fixedly connected to the first positioning plate 32 by the first bolt 34, thereby realizing the positioning and fixing of the mounting plate 14.

[0046] In a preferred embodiment, such as Figure 2 and Figure 4 As shown, the second positioning and fixing assembly 4 includes a second support plate 41 fixedly disposed on the top surface of the base plate 2. A second positioning plate 42 is fixedly disposed on the top surface of the second support plate 41. A groove 43 is opened on the top of the second positioning plate 42 corresponding to the air inlet seat 15. Second through holes are opened on both sides of the groove 43 on the second positioning plate 42 corresponding to the second mounting holes on the air inlet seat 15. The air inlet seat 15 is fixedly connected to the second positioning plate 42 by a second bolt 44.

[0047] In this embodiment, when positioning and fixing the air intake seat 15, it is first embedded in the groove 43, the second mounting hole on the air intake seat 15 is aligned with the second through hole, and the air intake seat 15 is fixedly connected to the second positioning plate 42 by the second bolt 44, thereby realizing the positioning and fixing of the air intake seat 15.

[0048] In a preferred embodiment, such as Figure 2 and Figure 5 As shown, the positioning component 5 includes several first supports 51 fixedly disposed circumferentially on the top surface of the base plate 2. The first supports 51 distributed circumferentially support the bottom of the upper half-ring tube 11 and the lower half-ring tube 12. The top surface of the first support 51 is provided with positioning pins 52 closely attached to the inner and outer sides of the upper half-ring tube 11 or the lower half-ring tube 12 respectively. The top surface of the first support 51 is provided with pin holes corresponding to the positioning pins 52. The bottom end of the positioning pin 52 is inserted into the corresponding pin hole with clearance fit. The side of the positioning pin 52 away from the upper half-ring tube 11 or the lower half-ring tube 12 is provided with an unlocking surface 53, which is used to release the positioning of the upper half-ring tube 11 and the lower half-ring tube 12 after rotating the positioning pin 52 180 degrees.

[0049] In this embodiment, when positioning the upper half-ring pipe 11, it is placed on the top surface of multiple first supports 51 and embedded between two positioning pins 52 on the same first support 51 for positioning, so that both ends of the upper half-ring pipe 11 are aligned with the flange 13 respectively. Then, the lower half-ring pipe 12 is positioned by the first supports 51 and positioning pins 52, so that the lower half-ring pipe 12 is aligned with the flange 13 and the air inlet seat 15 respectively, and the positioning is accurate.

[0050] In a preferred embodiment, such as Figure 2 , 6 As shown in Figure 7, the positioning inspection component 6 includes several second supports 61 fixedly disposed circumferentially on the top surface of the base plate 2. The second supports 61 are distributed one-to-one on the outer side of the nozzle 17. A bracket 62 is fixedly disposed on the top surface of the second support 61. A pin sleeve 63 is fixedly disposed on the bracket 62 directly above the corresponding nozzle 17. A positioning inspection pin 64 is inserted into the pin sleeve 63 with clearance fit. A positioning inspection head 65 with clearance fit to the spray hole 18 of the nozzle 17 is disposed at the bottom end of the positioning inspection pin 64. A limit groove 66 is disposed on one side of the positioning inspection pin 64 in the vertical direction. A limit pin 67 is disposed on one side of the bracket 62 that passes through the pin sleeve 63 and inserts into the limit groove 66.

[0051] In this embodiment, the machined holes 16 are located on the axis of the pin sleeve 63. The pin sleeve 63 is used to locate and machine each machined hole 16. Then, the positioning inspection pin 64 is inserted into the pin sleeve 63, and the positioning inspection head 65 is used to position the nozzle 17 so that it is aligned with the machined hole 16, ensuring accurate positioning.

[0052] After welding the nozzles 17 together, remove the positioning inspection pins 64 from the nozzle holes 18, and then release the positioning of the upper half-ring tube 11 and the lower half-ring tube 12 by adjusting the positioning assembly 5. Then, check the position of the nozzles 17 using the positioning inspection pins 64. If the positioning inspection head 65 can be inserted into the corresponding nozzle hole 18, the position of the nozzle 17 is qualified; otherwise, it is unqualified. The operation is convenient, the inspection is accurate, and the inspection efficiency is high.

[0053] In a preferred embodiment, the base plate 2, the first positioning and fixing component 3, the second positioning and fixing component 4, the positioning component 5, and the positioning inspection component 6 are all made of stainless steel, which has high structural strength, is not easily deformed, is not easily corroded or rusted, and has a long service life.

[0054] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0055] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0056] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A welding positioning and inspection fixture for a gas main pipe, characterized in that, include: Base plate; The first positioning and fixing component is fixedly disposed on both sides of the top surface of the base plate and is used to position and fix the mounting plates on both sides of the gas main pipe. The first positioning and fixing component includes a first support plate symmetrically fixedly disposed on both sides of the top surface of the base plate. A first positioning plate is fixedly disposed on the top surface of the first support plate. A first through hole is opened on the first positioning plate corresponding to the first mounting hole on the mounting plate. The mounting plate is fixedly connected to the first positioning plate by a first bolt. The second positioning and fixing component is fixedly disposed on the top surface of the base plate and is used to position and fix the gas inlet seat of the gas main pipe. The second positioning and fixing component includes a second support plate fixedly disposed on the top surface of the base plate, a second positioning plate fixedly disposed on the top surface of the second support plate, a groove corresponding to the gas inlet seat is opened on the top of the second positioning plate, and second through holes are opened on both sides of the groove corresponding to the second mounting holes on the gas inlet seat. The gas inlet seat is fixedly connected to the second positioning plate by a second bolt. A positioning assembly, fixedly mounted on the top surface of the base plate, is used for welding and positioning the upper and lower half-ring pipes of the gas main pipe, and for releasing the positioning of the upper and lower half-ring pipes after welding. The positioning assembly includes several first supports fixedly mounted circumferentially on the top surface of the base plate. The first supports, distributed circumferentially, support the bottom of the upper and lower half-ring pipes. Positioning pins are respectively and closely attached to the inner and outer sides of the upper or lower half-ring pipe on the top surface of the first support. Pin holes are provided on the top surface of the first support corresponding to the positioning pins. The bottom end of the positioning pin is inserted into the corresponding pin hole with clearance fit. An unlocking surface is provided on the side of the positioning pin away from the upper or lower half-ring pipe, which is used to release the positioning of the upper and lower half-ring pipes by rotating the positioning pin 180 degrees. A positioning inspection component, fixedly mounted on the top surface of the base plate, is used to position the machined holes of the gas main pipe and the nozzles, and to inspect the positional accuracy of the nozzles after welding. The positioning inspection component includes several second supports fixedly mounted circumferentially on the top surface of the base plate. The second supports are distributed one-to-one with each other on the outside of the nozzles. A bracket is fixedly mounted on the top surface of each second support. A pin sleeve is fixedly mounted on the bracket directly above the corresponding nozzle. A positioning inspection pin is inserted into the pin sleeve with clearance fit. A positioning inspection head with clearance fit to the nozzle orifice is provided at the bottom end of the positioning inspection pin. A limit groove is provided on one side of the positioning inspection pin in the vertical direction. A limit pin is provided on one side of the bracket that passes through the pin sleeve and inserts into the limit groove.

2. The gas main pipe welding positioning and inspection fixture according to claim 1, characterized in that, The base plate has shaped holes.

3. The gas main pipe welding positioning and inspection fixture according to claim 1, characterized in that, The base plate, the first positioning and fixing component, the second positioning and fixing component, the positioning component, and the positioning inspection component are all made of stainless steel.

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