Inclined pipe connecting flange positioning tool and assembling method

Abstract

The invention discloses an inclined angle connecting pipe flange positioning tool and an assembling method.The inclined angle connecting pipe flange positioning tool comprises a flange connecting plate, a positioning plate, a connecting rib plate, a fastening assembly and a flange positioning ring, the positioning plate is welded to one end of the flange connecting plate, and a connecting rib plate is arranged between the flange connecting plate and the positioning plate; the angle adjusting assembly is used for adjusting the angle between the flange connecting plate and the positioning plate, the flange positioning ring is arranged on the flange connecting plate, and the fastening assembly surrounds the flange positioning ring to be arranged on the flange connecting plate and used for being connected with an inclined angle pipe connecting flange. The inclined-angle pipe connecting flange tool is simple in structure and low in manufacturing cost, when the inclined-angle pipe connecting flange tool is used for assembling, the assembling precision can be effectively improved, the applicability is high, the pipe connecting flange assembling efficiency is effectively improved, welding deformation can be effectively controlled, and the product quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of flange assembly, and in particular relates to an oblique angle pipe flange positioning tool and an assembly method. Background Art

[0002] The pressure vessels in the chemical industry are equipped with multiple non-horizontal connecting flanges on the gasifier barrel. These connecting flanges have a certain angle. Part of the material is sprayed through these connecting flanges and concentrated to the center of the gasifier to participate in chemical reactions and generate synthesis gas. The assembly accuracy of these oblique angle connecting flanges is high. The assembly accuracy directly affects the operating efficiency and stability of the gasifier, and is one of the key factors to ensure the long-term stable operation of the gasifier.

[0003] In the prior art, such as Figure 1 As shown in the figure, the installation method of the bevel pipe flange is to install the bevel pipe flange in the opening of the cylinder according to the cross center line, and after measuring the distance from the outer circle of the flange to the cylinder at the 12 o'clock, 3 o'clock and 9 o'clock positions to meet the size requirements, it is spot welded in the butt groove. Due to the certain error in manual measurement, it cannot meet the assembly requirements of the bevel pipe flange with high precision requirements, resulting in greater deviations as the diameter of the gasifier increases. Summary of the invention

[0004] In order to at least partially solve the technical problems existing in the above-mentioned prior art, the present invention provides a positioning tool and an assembly method for an oblique angle pipe flange.

[0005] The bevel angle pipe flange positioning tool of the present invention includes a flange connecting plate, a positioning plate, a connecting rib plate, a fastening assembly and a flange positioning ring, wherein: the positioning plate is welded to one end of the flange connecting plate, the connecting plate rib is arranged between the flange connecting plate and the positioning plate, and is used to adjust the angle between the flange connecting plate and the positioning plate, the flange positioning ring is arranged on the flange connecting plate, and the fastening assembly is arranged on the flange connecting plate around the flange positioning ring, and is used to connect the bevel angle pipe flange.

[0006] Furthermore, in the above-mentioned beveled angle pipe flange positioning tooling, the flange connecting plate is made of channel steel, and the flange connecting plate is provided with four connecting holes around the flange positioning ring, and the connecting holes match the beveled angle pipe flange mounting holes, and the flange connecting plate is arc-shaped at one end away from the positioning plate.

[0007] Furthermore, in the above-mentioned bevel pipe flange positioning tool, the fastening assembly includes a connecting bolt and a fixing nut, the connecting bolt matches the connecting hole, and the connecting bolt sequentially passes through the bevel pipe flange mounting hole and the connecting hole and is threadedly engaged with the fixing nut.

[0008] Furthermore, in the above-mentioned bevel-angled pipe flange positioning tool, the positioning plate is trapezoidal, the width of the upper bottom of the positioning plate is equal to the width of the flange connecting plate, and the lower bottom of the positioning plate is arc-shaped.

[0009] Furthermore, in the above-mentioned bevel-angled pipe flange positioning tool, the connecting rib plate is in the shape of a right-angle triangle, one side of the connecting rib plate is welded to the flange connecting plate, and the other side is welded to the positioning plate.

[0010] Furthermore, in the above-mentioned bevel angle pipe flange positioning tool, the angle between the top of the connecting rib plate close to the flange connecting plate and the positioning plate is α=90-β;

[0011] Among them: α is the top angle of the connecting rib plate, and β is the angle between the flange connecting plate and the cylinder body.

[0012] Furthermore, in the above-mentioned bevel angle pipe flange positioning tool, the diameter of the flange positioning ring is equal to the inner diameter of the bevel angle pipe flange.

[0013] The assembly method of the bevel angle pipe flange tooling of the present invention comprises:

[0014] Marking of the bevel angle pipe flange tooling;

[0015] Place the cylinder body with the beveled flange horizontally on the roller frame, draw the cross center line of the beveled flange, the flange hole outline, and the tooling positioning line on the cylinder body according to the drawing dimensions, and rotate the roller frame to place the hole at the highest point of the cylinder body;

[0016] Cut the assembly hole along the opening contour of the pipe flange and cut the required welding groove;

[0017] Position the bevel angle pipe flange to be assembled by means of the flange positioning ring, rotate the bevel angle pipe flange to make the mounting hole and the connecting hole coaxial, and connect them into one with the fastening assembly;

[0018] Insert the beveled pipe flange fixed on the positioning fixture into the assembly hole, adjust the positioning fixture so that the center line of the positioning fixture coincides with the cross center line of the beveled pipe flange, and the inner edge of the positioning plate steel plate coincides with the fixture positioning line;

[0019] After welding the flange connection plate and the positioning plate to the cylinder body, weld the beveled connecting flange to the cylinder body to complete the assembly.

[0020] The bevel angle pipe flange positioning tool and assembly method of the present invention have the following advantages and beneficial effects:

[0021] The bevel angled pipe flange fixture of the present invention has a simple structure and low manufacturing cost. When the bevel angled pipe flange fixture is used for assembly, the angle between the flange connecting plate and the positioning plate is adjusted by connecting the rib plate so that the bevel angled pipe flange can be assembled at a specific angle. The assembly accuracy is high and the applicability is strong. The assembly efficiency of the pipe flange is effectively improved, welding deformation can be effectively controlled, and product quality is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings in the following descriptions are only used to further understand the embodiments of the present invention and constitute a part of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0023] Figure 1 It is a schematic diagram of the gasifier structure;

[0024] Figure 2 It is a front view of the bevel angle pipe flange positioning tool of the present invention;

[0025] Figure 3 A top view of the beveled angle pipe flange positioning tool of the present invention;

[0026] Figure 4 It is a left side view of the beveled angle pipe flange positioning tool of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the flange connecting plate of the bevel angle pipe flange positioning tool of the present invention;

[0028] Figure 6 It is a schematic diagram of the positioning plate structure of the bevel angle pipe flange positioning tool of the present invention;

[0029] Figure 7 It is a schematic diagram of the connecting rib structure of the beveled angle pipe flange positioning tool of the present invention;

[0030] Figure 8 This is a front view of the positioning tool for the beveled angle pipe flange of the present invention after positioning;

[0031] Fig. 9 It is a top view of the positioning tool for the beveled angle pipe flange of the present invention after positioning;

[0032] Fig.10 It is a left view of the positioning tool for the beveled angle pipe flange of the present invention after positioning.

[0033] Description of reference numerals:

[0034] 60: Beveled flange; 70: Body;

[0035] 1: flange connection plate, 11: connection hole;

[0036] 2: Positioning plate; 3: Connecting rib plate;

[0037] 4: fastening assembly, 41: connecting bolt, 42: fixing nut;

[0038] 5: Flange locating ring. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] like Figures 2 to 7 As shown, the bevel angle pipe flange positioning tool of the present invention includes a flange connecting plate 1, a positioning plate 2, a connecting rib plate 3, a fastening assembly 4 and a flange positioning ring 5, wherein: the positioning plate 2 is welded to one end of the flange connecting plate 1, the connecting plate rib is arranged between the flange connecting plate 1 and the positioning plate 2, and is used to adjust the angle between the flange connecting plate 1 and the positioning plate 2, the flange positioning ring 5 is arranged on the flange connecting plate 1, and the fastening assembly 4 is arranged around the flange positioning ring 5 on the flange connecting plate 1, and is used to connect the bevel angle pipe flange 60.

[0041] Furthermore, in the beveled pipe flange positioning tooling of the present invention, the flange connecting plate 1 is made of channel steel, and the flange connecting plate 1 is provided with four connecting holes 11 around the flange positioning ring 5. The connecting holes 11 match the mounting holes of the beveled pipe flange 60, and the end of the flange connecting plate 1 away from the positioning plate 2 is arc-shaped, thereby ensuring that the end of the flange connecting plate 1 away from the positioning plate 2 can be welded to the barrel 70.

[0042] Furthermore, in the bevel take-over flange positioning tooling of the present invention, the fastening assembly 4 includes a connecting bolt 41 and a fixing nut 42, the connecting bolt 41 matches the connecting hole 11, and the connecting bolt passes through the bevel take-over flange mounting hole and the connecting hole 11 in turn and is threadedly engaged with the fixing nut 42, thereby effectively ensuring that the bevel take-over flange 60 is connected to the bevel take-over flange tooling as a whole.

[0043] Furthermore, in the bevel-angled pipe flange positioning tool of the present invention, the positioning plate 2 is trapezoidal, the upper bottom width of the positioning plate 2 is equal to the width of the flange connecting plate 1, and the lower bottom of the positioning plate 2 is arc-shaped.

[0044] Furthermore, in the beveled-angle pipe flange positioning tooling of the present invention, the connecting rib plate 3 is in the shape of a right-angle triangle, one side of the connecting rib plate 3 is welded to the flange connecting plate 1, and the other side is welded to the positioning plate 2, so that the inclination angle of the flange connecting plate 1 is controlled by controlling the angle of the connecting rib plate 3.

[0045] Furthermore, in the bevel angle pipe flange positioning tool of the present invention, the top angle of the connecting rib plate 3 close to the flange connecting plate 1 and the positioning plate 2 is α=90-β;

[0046] Wherein: α is the top angle of the connecting rib plate 3, and β is the angle between the flange connecting plate 1 and the cylinder body 70.

[0047] Furthermore, in the bevel pipe flange positioning tool of the present invention, the diameter of the flange positioning ring 5 is equal to the inner diameter of the bevel pipe flange 60, thereby effectively ensuring that the bevel pipe flange 60 can be accurately positioned and installed on the bevel pipe flange positioning tool.

[0048] Positioning principle: Determination of the inclination angle β: The bevel angle pipe flange positioning tool uses right-angle trigonometric functions and the principle that if the two sides of two angles are perpendicular to each other, the two angles are equal, that is, the pipe flange inclination angle β = the angle β between the flange connecting plate 1 and the barrel 70. Therefore, in order to ensure the inclination angle β of the pipe flange, it is only necessary to ensure the angle between the flange connecting plate 1 and the barrel 70. Because sinβ=B / A, the center height B of the positioning plate 2 and the assembly size A of the flange connecting plate 1 and the positioning plate 2 must be strictly controlled in the triangle enclosed by the flange connecting plate 1, the positioning plate 2 and the barrel 70. In order to ensure that the positioning tool is stably matched with the barrel 70, the corresponding intersection lines (i.e., arc-shaped) are cut at the ends of the flange connecting plate 1 and the positioning plate 2, and the contact surface must have a certain width;

[0049] Determination of the height G of the flange surface 70° from the barrel: Using the principle of right-angle trigonometric function G = (AF) × tanβ, the height G of the flange surface 70° from the barrel is determined by the bevel angle pipe flange positioning tooling.

[0050] The assembly method of the bevel angle pipe flange tooling of the present invention comprises:

[0051] like Figures 2 to 10 As shown, the bevel angle pipe flange tooling is marked, and the assembly position line gg of the positioning plate 2 is marked with a length A from the center of the intersecting line on the left side of the flange connection plate 1, and then the ee line is marked from gg to the left with a length F offset. The intersection of the ee line and the center line ff of the flange connection plate 1 is the center point of the flange positioning ring 5, that is, point P is the center point P of the sealing surface of the bevel angle pipe flange 60;

[0052] Place the barrel 70 to be assembled with the bevel angle pipe flange 60 horizontally on the roller frame, and draw the cross center line of the bevel angle pipe flange 60 on the barrel 70 according to the drawing size: aa (longitudinal) bb (transverse), pipe flange opening outline line, tooling positioning line dd, and rotate the roller frame to place the opening at the highest point of the barrel 70;

[0053] Cut the assembly hole along the opening contour of the pipe flange and cut the required welding groove;

[0054] Position the bevel angle pipe flange 60 to be assembled by the flange positioning ring 5, rotate the bevel angle pipe flange 60 to make the mounting hole and the connecting hole 11 coaxial, and connect them into one by using the fastening assembly 4;

[0055] Insert the beveled pipe flange 60 fixed on the positioning fixture into the assembly hole, adjust the positioning fixture so that the center line ff of the positioning fixture coincides with the cross center line aa of the beveled pipe flange 60, and the inner edge of the steel plate of the positioning plate 2 coincides with the fixture positioning line dd;

[0056] After the flange connection plate 1 and the positioning plate 2 are welded to the barrel body 70 , the beveled pipe flange 60 is welded to the barrel body 70 to complete the assembly.

[0057] In summary, compared with the prior art, the beveled angle pipe flange positioning tooling and assembly method of the present invention have the following advantages and beneficial effects: the beveled angle pipe flange tooling of the present invention has a simple structure and low manufacturing cost. When assembling the beveled angle pipe flange tooling, the angle between the flange connecting plate and the positioning plate is adjusted by connecting the rib plate. By using the right-angle trigonometric function and the principle that two angles are equal if two sides are perpendicular to each other, the beveled angle pipe flange is assembled at a specific angle. The assembly accuracy is high, the applicability is strong, the pipe flange assembly efficiency is effectively improved, the welding deformation can be effectively controlled, and the product quality is improved.

[0058] It should be noted that, in this article, unless otherwise clearly specified and limited, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. In addition, "front", "back", "left", "right", "upper" and "lower" in this article are all referenced to the placement state shown in the accompanying drawings.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oblique angle pipe flange positioning tool, characterized in that: The bevel-angled pipe flange positioning tool includes a flange connecting plate, a positioning plate, a connecting rib plate, a fastening assembly and a flange positioning ring, wherein: the positioning plate is welded to one end of the flange connecting plate, the connecting plate rib is arranged between the flange connecting plate and the positioning plate, and is used to adjust the angle between the flange connecting plate and the positioning plate, the flange positioning ring is arranged on the flange connecting plate, and the fastening assembly is arranged on the flange connecting plate around the flange positioning ring, and is used to connect the bevel-angled pipe flange.

2. The bevel pipe flange positioning tool according to claim 1 is characterized in that: The flange connecting plate is made of channel steel, and is provided with four connecting holes around the flange positioning ring. The connecting holes match the oblique angle pipe flange mounting holes, and the flange connecting plate is in an arc shape at one end away from the positioning plate.

3. The bevel pipe flange positioning tool according to claim 2 is characterized in that: The fastening assembly includes a connecting bolt and a fixing nut. The connecting bolt matches the connecting hole. The connecting bolt passes through the beveled angle pipe flange mounting hole and the connecting hole in sequence and is threadedly engaged with the fixing nut.

4. The bevel pipe flange positioning tool according to claim 1 is characterized in that: The positioning plate is trapezoidal in shape, the width of the upper bottom of the positioning plate is equal to the width of the flange connecting plate, and the lower bottom of the positioning plate is arc-shaped.

5. The bevel pipe flange positioning tool according to claim 1 is characterized in that: The connecting rib plate is in the shape of a right-angle triangle. One side of the connecting rib plate is welded to the flange connecting plate, and the other side is welded to the positioning plate.

6. The bevel pipe flange positioning tool according to claim 5, characterized in that: The top angle of the connecting rib plate close to the flange connecting plate and the positioning plate is α=90-β; Among them: α is the top angle of the connecting rib plate, and β is the angle between the flange connecting plate and the cylinder body.

7. The beveled pipe flange positioning tool according to claim 1 is characterized in that: The diameter of the flange positioning ring is equal to the inner diameter of the bevel angle pipe flange.

8. An assembly method using the beveled angle pipe flange positioning tool according to any one of claims 1 to 7, characterized in that: The method comprises: Marking of the bevel angle pipe flange tooling; Place the cylinder body with the beveled flange horizontally on the roller frame, draw the cross center line of the beveled flange, the flange hole outline, and the tooling positioning line on the cylinder body according to the drawing dimensions, and rotate the roller frame to place the hole at the highest point of the cylinder body; Cut the assembly hole along the opening contour of the pipe flange and cut the required welding groove; Position the bevel angle pipe flange to be assembled by means of the flange positioning ring, rotate the bevel angle pipe flange to make the mounting hole and the connecting hole coaxial, and connect them into one with the fastening assembly; Insert the beveled pipe flange fixed on the positioning fixture into the assembly hole, adjust the positioning fixture so that the center line of the positioning fixture coincides with the cross center line of the beveled pipe flange, and the inner edge of the positioning plate steel plate coincides with the fixture positioning line; After welding the flange connecting plate and the positioning plate to the cylinder body, weld the beveled connecting flange to the cylinder body to complete the assembly.

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