Anti-deformation device for welding heat treatment of three-way flange pipe

Abstract

The invention relates to an anti-deformation device for welding heat treatment of a three-way flange pipe. The right flange fixing assembly is mounted at the right end of the top surface of the flat plate base and is used for fixing the right end of the three-way flange pipe; the rear flange fixing assembly is installed on the rear side of the top face of the flat base and fixes the rear end of the three-way flange pipe; the front flange fixing assembly is installed on the front side of the top face of the flat base and fixes the front side of the three-way flange pipe; the flange plate pressing piece A, the flange plate pressing piece B and the flange plate pressing piece C44 are unscrewed respectively, all flange plate anti-rotation pressing plates are taken off, all flanges are aligned to the positioning positions according to flange plate positioning plates, then the flange plate pressing pieces are screwed back and screwed tightly, the flange plate anti-rotation pressing plates are screwed tightly, and the positions of all the flanges are fixed firmly; the three-way flange pipe is convenient, firm and reliable to mount before heat treatment; during heat treatment, an inner cavity passage of the flanged pipe welding part is smooth, and the flange is uniformly heated; and after heat treatment, dismounting is fast, and the pipe orifice profile precision is high.

Description

Technical Field

[0001] The invention relates to a three-way flange pipe welding heat treatment anti-deformation device, belonging to the field of aviation technology. Background Art

[0002] When heat treating flanged pipe welded parts, the position of the pipe mouth is deformed due to the increase in temperature, and the conformal tooling of ordinary high-temperature resistant materials is also prone to deformation at above 900°C, resulting in the shape of the pipe mouth being deformed after the heat treatment is completed, with large errors, and the product cannot be conformed, which is not conducive to use; and the position accuracy of the pipe mouth of flanged pipe welded parts after heat treatment is low.

[0003] Chinese Patent 201621022026.7, Title: Technical Solution of a Heat Treatment Positioning Device for a Bent Pipe: A heat treatment positioning device for a bent pipe comprises a steel plate frame and a bent pipe, the two ends of the bent pipe are connected with flange heads, the steel plate frame and the flange heads are fixedly connected by a bolt tightening structure, a rib plate is welded and fixed on the right-angled inner side of the steel plate frame, and a reinforcement cover plate is fixedly provided on the right-angled outer side of the steel plate frame by a welding structure. The flange end of the bent pipe is fixed only by providing a steel plate frame and providing a bolt tightening structure at the end of the steel plate frame, and the flange position cannot be positioned and is only suitable for flange installation of two pipe openings.

[0004] Chinese Patent 201922500461.6, Name: Technical solution of a vacuum heat treatment device for hardware processing: A vacuum heat treatment device for hardware processing, comprising a vacuum pipe and a docking pipe, the end of the vacuum pipe is provided with a first flange, the end of the docking pipe is provided with a second flange, characterized in that the outer circumferential edge of the second flange is provided with an annular protrusion, and the inner side of the annular protrusion is provided with an embedding groove, the top view cross-section of the embedding groove is trapezoidal and the notch area formed on the annular protrusion is smaller than the groove bottom area, a raised embedding block is provided on the outer circumference of the first flange, the embedding block and the embedding groove have completely the same cross-section and are clearance fit, the first flange and the second flange are fixedly connected by bolts, which is suitable for the connection of two docking pipe flanges, and cannot be used for three-way flange pipe welding heat treatment. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a three-way flange pipe welding heat treatment anti-deformation device which can deform the pipe mouth position due to temperature increase, can be quickly installed and disassembled, and can improve the pipe mouth position accuracy.

[0006] The present invention adopts the following technical solution:

[0007] The present invention comprises a rectangular flat plate base, a right flange fixing assembly installed on the right end of the top surface of the flat plate base and fixing the right end of the three-way flange pipe, a rear flange fixing assembly installed on the rear side of the top surface of the flat plate base and fixing the rear end of the three-way flange pipe, and a front flange fixing assembly installed on the front side of the top surface of the flat plate base and fixing the front side of the three-way flange pipe; the three-way flange pipe is installed conveniently, firmly and reliably before heat treatment.

[0008] The right flange fixing assembly of the present invention comprises a right L-shaped folding plate fixedly installed on the right end of the flat base, a right supporting plate fixedly installed on the right side of the right L-shaped folding plate, a right flange positioning plate fixedly installed on the top of the right supporting plate, and a plurality of flange clamping parts A, flange anti-rotation pressure plates A and heat dissipation grooves A arranged on the left side surface of the right flange positioning plate; the folded edge of the right L-shaped folding plate is parallel to the right end side of the flat base; the right flange positioning plate is in a ring shape matching the right flange; the heat dissipation grooves A are circumferentially spaced on the right flange positioning plate, and a single heat dissipation groove A is strip-shaped and radially arranged; the flange clamping parts A are spaced on the upper and lower sides of the right flange positioning plate; the flange anti-rotation pressure plates A are installed on the front and rear sides of the right flange positioning plate; after being fixed, it is convenient for the right flange to dissipate heat during high-temperature welding; and it is also convenient for disassembly.

[0009] Each flange clamping piece A of the present invention is arranged between two adjacent heat dissipation slots, and the flange clamping piece A includes a screw threaded on the right flange positioning plate, an L-shaped clamping block installed at one end of the screw, and a clamping nut A installed on the other end of the screw. The L-shaped clamping block is arranged on the left side of the right flange positioning plate, and the clamping nut A is clamped against the right side wall of the right flange positioning plate; the distance between the clamping surface of the L-shaped clamping block and the corresponding surface of the right flange positioning plate is increased, which facilitates the placement of the right flange.

[0010] In the present invention, each flange anti-rotation pressure plate A is arranged between two adjacent heat dissipation slots A; the flange anti-rotation pressure plate A includes an arc-shaped pressure plate matching the outer circle of the flange and connecting bolts arranged at both ends of the arc-shaped pressure plate, and the connecting bolts are fixedly installed on the right flange positioning plate, and the connecting bolt gaps are arranged in the through holes at both ends of the arc-shaped pressure plate, and locking nuts are screwed on the connecting bolts on the outside of the arc-shaped pressure plate.

[0011] The difference between the rear flange fixing assembly structure and the right flange fixing assembly structure of the present invention is that the number of the heat dissipation grooves B and the flange plate pressing parts B on the rear flange fixing assembly is less than the number of the heat dissipation grooves A and the flange plate anti-rotation pressing plate A.

[0012] The front flange fixing assembly of the present invention includes a square support fixedly installed on the front of the flat base, a front support plate fixedly installed on the top surface of the square support, a front flange positioning plate fixedly installed on the rear end of the front support plate, a flange clamping member C circumferentially arranged on the top surface of the front flange positioning plate, and bolts and nuts C arranged between two adjacent flange clamping members C; the front flange positioning plate is in a ring shape matching the front flange; the top surface of the square support is arranged to be inclined upward from front to rear; the flange clamping member C has the same structure as the flange anti-rotation pressure plate A.

[0013] Since the outer diameter of the front flange is relatively small, the flange clamping member C and the bolts and nuts C described in the present invention are both in groups of three.

[0014] The positive effects of the present invention are as follows: the flange clamping piece A, the flange clamping piece B and the flange clamping piece C44 are unscrewed respectively, the anti-rotation pressure plates of each flange are removed, each flange is aligned with the positioning position according to the flange positioning plate, and then the flange clamping pieces are screwed back and tightened in turn, the flange anti-rotation pressure plates are tightened, and the positions of each flange are firmly fixed; the three-way flange pipe is installed conveniently, firmly and reliably before heat treatment; during heat treatment, the inner cavity passage of the flanged pipe welding part is unobstructed and the flange is heated evenly, thereby preventing the pipe mouth position from being deformed due to the temperature increase; after heat treatment, the disassembly is fast and the pipe mouth contour accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Attached Figure 2 This is a schematic diagram of the axonometric structure of the present invention;

[0017] Attached Figure 3 For attachment Figure 2 A schematic diagram of the enlarged structure of part A;

[0018] Attached Figure 4 This is a schematic diagram of the state structure of the present invention. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-4 The present invention is described in detail. Figure 1 The position of the middle front flange fixing component 4 is the “front”, the position of the long rear flange fixing component 3 is the “rear”, and the position of the right flange fixing component 2 is the “right”.

[0020] Embodiment 1:

[0021] As attached Figure 1 , 2As shown in Figures 3 and 4, the present invention includes a rectangular flat base 1, a right flange fixing component 2 installed on the right end of the top surface of the flat base 1, a rear flange fixing component 3 installed on the rear side of the top surface of the flat base 1, and a front flange fixing component 4 installed on the front side of the top surface of the flat base 1, all of which are made of 310S stainless steel, a high temperature resistant material of 1050°C; the right flange fixing component 2 fixes the right flange 8 at the right end of the three-way flange pipe 5; the rear flange fixing component 3 fixes the rear flange 7 at the rear end of the three-way flange pipe 5; the front flange fixing component 4 fixes the front flange 6 on the front side of the three-way flange pipe 5, thereby fixing the flanges of the three-way flange pipe 5 and facilitating subsequent processing.

[0022] As attached Figure 1 , 2 As shown in , 3, the right flange fixing assembly of the present invention includes a right L-shaped folding plate 21 fixedly installed on the right end of the flat base 1, a right supporting plate 22 fixedly installed on the right side of the right L-shaped folding plate 21, a right flange positioning plate 23 fixedly installed on the top of the right supporting plate 22, and a plurality of flange clamping members A, flange anti-rotation pressure plates A and heat dissipation grooves A24 arranged on the left side of the right flange positioning plate 23; the folded edge of the right L-shaped folding plate 21 is parallel to the right end side of the flat base 1; the right flange positioning plate 23 is in a ring shape matching the right flange 8; it is convenient for fixing the right flange 8; the heat dissipation grooves A24 are circumferentially spaced on the right flange positioning plate 23, and a single heat dissipation groove A24 is strip-shaped and radially arranged, which is convenient for heat dissipation of the right flange 8 during high-temperature welding; the flange clamping members A are spaced on the upper and lower sides of the right flange positioning plate 23; the flange anti-rotation pressure plate A is installed on the front and rear sides of the right flange positioning plate 23; the right flange 8 is fixed and easy to disassemble.

[0023] As attached Figure 1 , 2 As shown, each flange clamping member A is arranged between two adjacent heat dissipation grooves 24, and the flange clamping member A includes a screw 25 screwed on the right flange positioning plate 23, an L-shaped clamping block 26 installed at one end of the screw 25, and a clamping nut A27 installed on the other end of the screw 25. The L-shaped clamping block 26 is arranged on the left side of the right flange positioning plate 23, and the clamping nut A27 is pressed against the left side of the right flange positioning plate 23. The clamping nut A27 is loosened outwardly and the screw 25 is released toward the L-shaped clamping block 26. The distance between the clamping surface of the L-shaped clamping block 26 and the corresponding surface of the right flange positioning plate 23 is increased, which is convenient for placing the right flange 8. The reverse operation can make the clamping surface of the L-shaped clamping block 26 press the right flange 8.

[0024] As attached Figure 2 , 3As shown, the flange anti-rotation pressure plate A is arranged between two adjacent heat dissipation grooves A24, and the flange anti-rotation pressure plate A includes an arc-shaped pressure plate 28 matching the outer circle of the flange and connecting bolts 29 arranged at both ends of the arc-shaped pressure plate 28, and the connecting bolts 29 are fixedly installed on the right flange positioning plate 23. The connecting bolts 29 are gap-arranged in the through holes at both ends of the arc-shaped pressure plate 28, and the locking nuts 30 are screwed on the connecting bolts 29 on the outside of the arc-shaped pressure plate 28. After the arc-shaped pressure plate 28 is removed, the connecting bolts 29 are correspondingly inserted into the mounting holes of the right flange 8, and then the ends of the connecting bolts 29 are screwed on the locking nuts 30. The locking nuts 30 are tightened to fix the right flange 8 on the right flange positioning plate 23 through the arc-shaped pressure plate 28 to prevent the right flange 8 from rotating during operation.

[0025] Embodiment 2:

[0026] The difference between the structure of the rear flange fixing component 3 of the present invention and the right flange fixing component 2 is that the number of the heat dissipation grooves B31 and the flange clamping parts B32 on the rear flange fixing component 3 is less than the heat dissipation grooves A24 and the flange anti-rotation pressure plate A, and the method of installing the rear flange 7 is the same as that in Example 1.

[0027] Embodiment three:

[0028] The front flange fixing assembly 4 of the present invention comprises a square support 41, a front support plate 42 fixedly mounted on the top surface of the square support 41, a front flange positioning plate 43 fixedly mounted on the rear end of the front support plate 42, flange pressing members C44 circumferentially spaced on the front flange positioning plate 43, and bolts and nuts C45 arranged between two adjacent flange pressing members C44; the front flange positioning plate 43 is in a ring shape matching the front flange 6. The top surface of the square support 41 is arranged upwardly inclined from front to rear; the flange pressing member C44 has the same structure as the flange anti-rotation pressure plate A. Since the outer diameter of the front flange 6 is small, the outer diameter of the front flange positioning plate 43 is correspondingly reduced, and the corresponding flange pressing members C44 and bolts and nuts C45 are respectively arranged in three groups.

[0029] The operation method of fixing the front flange 6 by the flange clamp C44 is the same as that of the right flange 8 of the flange clamp A in the first embodiment, and then the fixing is strengthened by bolts and nuts C45.

[0030] At present, the relevant flanged pipe welding parts have been processed and formed, and the installation verification of relevant pipe parts has been completed on a certain type of general aircraft. The performance meets the expected requirements, the conformal effect is good, the pipe mouth position profile is high in accuracy, it is easy to use and has high reliability.

Claims

1. A three-way flange pipe welding heat treatment anti-deformation device, characterized in that: It comprises a rectangular flat base (1), a right flange fixing assembly (2) installed on the right end of the top surface of the flat base (1), a rear flange fixing assembly (3) installed on the rear side of the top surface of the flat base (1), and a front flange fixing assembly (4) installed on the front side of the top surface of the flat base (1); The right flange fixing assembly (2) fixes the right flange (8) at the right end of the three-way flange pipe (5); the rear flange fixing assembly (3) fixes the rear flange (7) at the rear end of the three-way flange pipe (5); and the front flange fixing assembly (4) fixes the front flange (6) at the front side of the three-way flange pipe (5).

2. The three-way flange pipe welding heat treatment anti-deformation device according to claim 1 is characterized in that: The right flange fixing assembly comprises a right L-shaped folding plate (21) fixedly mounted on the right end of the flat base (1), a right supporting plate (22) fixedly mounted on the right side of the right L-shaped folding plate (21), a right flange positioning plate (23) fixedly mounted on the top of the right supporting plate (22), and a plurality of flange pressing parts A, flange anti-rotation pressing plates A and heat dissipation grooves A (24) arranged on the left side surface of the right flange positioning plate (23); the folded edge of the right L-shaped folding plate (21) is parallel to the right end side of the flat base (1); The right flange positioning plate (23) is in a ring shape matching the right flange (8); The heat dissipation grooves A (24) are arranged on the right flange positioning plate (23) at intervals in the circumferential direction, and a single heat dissipation groove A (24) is strip-shaped and radially arranged; The flange pressing parts A are arranged at intervals on the upper side and the lower side of the right flange positioning plate (23); The flange anti-rotation pressure plate A is installed on the front and rear sides of the right flange positioning plate (23).

3. The three-way flange pipe welding heat treatment anti-deformation device according to claim 2 is characterized in that: Each flange clamping member A is arranged between two adjacent heat dissipation grooves (24), and the flange clamping member A comprises a screw rod (25) screwed on the right flange positioning plate (23), an L-shaped clamping block (26) installed at one end of the screw rod (25), and a clamping nut A (27) installed at the other end of the screw rod (25), wherein the L-shaped clamping block (26) is arranged on the left side of the right flange positioning plate (23), and the clamping nut A (27) is clamped against the right side wall of the right flange positioning plate (23).

4. The three-way flange pipe welding heat treatment anti-deformation device according to claim 3 is characterized in that: Each flange anti-rotation pressure plate A is arranged between two adjacent heat dissipation slots A (24); The flange anti-rotation pressure plate A comprises an arc-shaped pressure plate (28) matching the outer circle of the flange and connecting bolts (29) arranged at both ends of the arc-shaped pressure plate (28). The connecting bolts (29) are fixedly installed on the right flange positioning plate (23). The gap of the connecting bolts (29) is arranged in the through holes at both ends of the arc-shaped pressure plate (28). A locking nut (30) is screwed on the connecting bolts (29) on the outside of the arc-shaped pressure plate (28).

5. The three-way flange pipe welding heat treatment anti-deformation device according to claim 4 is characterized in that: The difference between the structure of the rear flange fixing assembly (3) and the structure of the right flange fixing assembly (2) is that the number of the heat dissipation grooves B (31) and the flange plate pressing parts B (32) on the rear flange fixing assembly (3) is less than that of the heat dissipation grooves A (24) and the flange plate anti-rotation pressure plate A.

6. The three-way flange pipe welding heat treatment anti-deformation device according to claim 5, characterized in that: The front flange fixing assembly (4) comprises a square support (41) fixedly mounted on the front of the flat base 1, a front support plate (42) fixedly mounted on the top surface of the square support (41), a front flange positioning plate (43) fixedly mounted on the rear end of the front support plate (42), flange pressing members C (44) arranged at circumferential intervals on the top surface of the front flange positioning plate (43), and bolts and nuts C (45) arranged between two adjacent flange pressing members C (44); The front flange positioning plate (43) is in a ring shape matching the front flange (6); The top surface of the square support (41) is arranged to be inclined upward from front to back; The flange pressing member C (44) has the same structure as the flange anti-rotation pressing plate A.

7. The three-way flange pipe welding heat treatment anti-deformation device according to claim 6 is characterized in that: The flange clamping parts C (44) and the bolts and nuts C (45) are each in three sets.

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