Weld joint heat treatment device for longitudinal welded pipe

Abstract

The utility model belongs to the technical field of longitudinal welded pipe heat treatment, and particularly relates to a longitudinal welded pipe weld heat treatment device which comprises a base, the lower end of the base is fixedly connected with a supporting frame, the upper end of the base is fixedly connected with a tempering box, the left end of the tempering box is provided with a box cover, and the box cover makes contact with the base. The inner side wall of the tempering box is in contact with a heater, the end face of the heater is fixedly connected with an insertion block, the insertion block is slidably connected with the tempering box, and the inner wall of the tempering box is slidably connected with an insertion plate. Through the arrangement of the rotating cylinder, the longitudinal welded pipe can be placed and used, effective heat transfer can be ensured under the action of the circulating hole, the rotating cylinder can drive the longitudinal welded pipe to rotate under the driving of the servo motor so as to ensure the heating uniformity, and the longitudinal welded pipe can be uniformly heated under the structures such as the limiting seat and the second heat-resisting spring. And the rotating cylinder can be rotationally guided, and the shaking problem of the rotating cylinder is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of straight seam welded pipe heat treatment technology, concretely to a straight seam welded pipe weld heat treatment device. BACKGROUND

[0002] The weld heat treatment of straight seam welded pipe is to eliminate the stress generated in the welding process and improve the performance and durability of the welded joint. The weld heat treatment usually includes annealing, normalizing, quenching and other processes. For the weld heat treatment of straight seam welded pipe, tempering treatment is one of the heat treatment processes. After the pipeline is welded, it is heated and then cooled to room temperature to reduce the residual stress generated in the welding process and improve the toughness and strength of the welded joint.

[0003] In the utility model patent with patent authorization announcement number CN201579300U, a straight seam high-frequency welded pipe forming assembly line capable of extruding and thickening the plate edge is disclosed. The extruding and thickening device includes a set of heating devices, a set of rollers, a set of water cooling devices, and a set of tempering heating devices. The above-mentioned devices are arranged along the assembly line and on both sides of the assembly line. The heating components of the heating devices are symmetrically arranged on the upper and lower sides of the steel plate passing position on the assembly line. The distance between the rollers is less than the width of the steel plate passing on the assembly line.

[0004] However, the existing weld heat treatment device for straight seam welded pipe also has some disadvantages. First, although the existing weld heat treatment device for straight seam welded pipe uses a tempering box to place and heat treat the straight seam welded pipe, the static straight seam welded pipe has poor heating uniformity due to the influence of heat transfer efficiency.

[0005] Secondly, the existing weld heat treatment device for straight seam welded pipe mostly uses a heater for heating and tempering operation, and the heater is mostly assembled by bolts and other components, which is inconvenient to use. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a weld heat treatment device for straight seam welded pipe, which solves the problem of poor heating uniformity of static straight seam welded pipe due to the influence of heat transfer efficiency in the existing weld heat treatment device for straight seam welded pipe, and solves the problem of inconvenient use of the existing weld heat treatment device for straight seam welded pipe, which mostly uses a heater for heating and tempering operation, and the heater is mostly assembled by bolts and other components.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a straight seam welded pipe's weld heat treatment device, including the base, the lower end of base is fixedly connected with the support frame, the upper end of base is fixedly connected with the annealing box, the left end of annealing box is provided with the box cover, the box cover is in contact with base, the inner side wall of annealing box is in contact with the heater, the end surface of heater is fixedly connected with the plug -in block, the plug -in block is connected with annealing box slidingly, the inner wall of annealing box is connected with the plug -in board slidingly, the vertical portion of plug -in board is connected with plug -in block slidingly, the annealing box is provided with the soaking mechanism.

[0008] Preferably, the support frame is provided with two, the two support frames are symmetrically distributed on the base, and the base can be supported by the support frame.

[0009] Preferably, the horizontal part of the plug-in board is welded with a heat-resistant spring, and the other end of the heat-resistant spring is welded with the annealing box. The plug-in board can be connected by the heat-resistant spring.

[0010] Preferably, the soaking mechanism comprises a servo motor, the right end of the annealing box is fixedly installed with a servo motor, the output shaft of the servo motor is rotatably connected with the annealing box, the output shaft of the servo motor is fixedly connected with a rotating cylinder, the rotating cylinder is located in the inside of the annealing box, the inner wall of the annealing box is slidably connected with an expansion plate, the end surface of the expansion plate close to the side of the rotating cylinder is fixedly connected with a limiting seat, the limiting seat is in contact with the rotating cylinder, the outer side of the expansion plate is provided with a heat-resistant spring two, the straight seam welded pipe can be driven to rotate by the servo motor and the rotating cylinder, to ensure the uniformity of the subsequent straight seam welded pipe heating, and the rotating cylinder can be guided to rotate under the structure of the limiting seat and the heat-resistant spring two.

[0011] Preferably, a plurality of flow-through holes are formed in the surface of the rotating cylinder, and the plurality of flow-through holes are uniformly distributed on the rotating cylinder. The effective transmission of heat can be ensured by the flow-through holes.

[0012] Preferably, one end of the heat-resistant spring two is welded with the limiting seat, and the other end of the heat-resistant spring two is welded with the annealing box. The limiting seat can be tightly handled by the heat-resistant spring two.

[0013] Compared with the prior art, the utility model has the advantages as follows:

[0014] 1. The heater is in contact with the annealing box by pushing, the plug-in block is inserted into the annealing box, the plug-in block is inserted and handled under the structure of the plug-in board and the heat-resistant spring one, the heater is stable, the installation and use of people are facilitated, and the subsequent straight seam welded pipe can be heated under the action of the heater.

[0015] 2, the utility model discloses the setting can be placed and used to straight seam welded pipe, under the action of the through -flow hole, can guarantee the effective transmission of heat, under the drive of servo motor, can make rotating cylinder drive straight seam welded pipe to rotate to guarantee the uniformity of heating, and under the structure such as limit seat, heat -resistant spring two, can rotate the rotating cylinder and guide, avoid the problem of shaking of rotating cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure perspective drawing of the utility model;

[0017] Figure 2 It is the overall structure perspective drawing of the utility model; Figure 1 It is the tempering box internal structure drawing of the utility model;

[0018] Figure 3 It is the tempering box internal structure drawing of the utility model; Figure 1 It is the case cover side view cut -away view of the utility model;

[0019] Figure 4 It is the A place enlarged view of the utility model; Figure 3

[0020] In the drawing: 1, base;2, support frame;3, tempering box;4, case cover;5, heater;6, insert block;7, insert plate;8, heat -resistant spring one;9, even heating mechanism;91, servo motor;92, rotating cylinder;93, through -flow hole;94, telescopic plate;95, limit seat;96, heat -resistant spring two. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments only are a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0022] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 ​The utility model provides a kind of straight seam welded pipe's weld heat treatment device, including base 1, the lower end of base 1 is fixedly connected with support frame 2, support frame 2 is provided with two, two support frames 2 are symmetrically distributed on base 1, by the setting of support frame 2, base 1 can be supported and used, the upper end of base 1 is fixedly connected with annealing box 3, the left end of annealing box 3 is provided with box cover 4, box cover 4 is in contact with base 1, the inner side wall of annealing box 3 is in contact with heater 5, the end surface of heater 5 is fixedly connected with plug block 6, plug block 6 is slidably connected with annealing box 3, the inner wall of annealing box 3 is slidably connected with plug plate 7, the vertical portion of plug plate 7 is slidably connected with plug block 6, heat-resistant spring one 8 is welded on the horizontal portion of plug plate 7, the other end of heat-resistant spring one 8 is welded with annealing box 3, by the setting of heat-resistant spring one 8, plug plate 7 can be connected and used.

[0023] Please refer to Figure 1 、 Figure 2 、 Figure 3 , annealing box 3 is provided with uniform heating mechanism 9, uniform heating mechanism 9 includes servo motor 91, the right end of annealing box 3 is fixedly installed with servo motor 91, the output shaft of servo motor 91 is rotatably connected with annealing box 3, the output shaft of servo motor 91 is fixedly connected with rotating cylinder 92, rotating cylinder 92 is located in the inside of annealing box 3, the inner wall of annealing box 3 is slidably connected with telescopic plate 94, the end surface of one side of telescopic plate 94 close to rotating cylinder 92 is fixedly connected with limit seat 95, limit seat 95 is in contact with rotating cylinder 92, the outside of telescopic plate 94 is provided with heat-resistant spring two 96, by the setting of servo motor 91 and rotating cylinder 92, straight seam welded pipe can be rotated to ensure the uniformity of subsequent straight seam welded pipe heating, and under the structure of limit seat 95 and heat-resistant spring two 96, rotating cylinder 92 can be rotated and guided.

[0024] Please refer to Figure 1 、 Figure 2 、 Figure 3 , the surface of rotating cylinder 92 is provided with a plurality of flow-through holes 93, a plurality of flow-through holes 93 are evenly distributed on rotating cylinder 92, by the setting of flow-through hole 93, the effective transmission of heat can be ensured, one end of heat-resistant spring two 96 is welded with limit seat 95, the other end of heat-resistant spring two 96 is welded with annealing box 3, by the setting of heat-resistant spring two 96, limit seat 95 can be tightly handled.

[0025] The specific implementation process of the utility model is as follows: when using, by pulling plug plate 7 to move upwards, so that plug plate 7 slides along the inner wall of annealing box 3, heat-resistant spring one 8 is deformed, then push heater 5 to contact with the inner side wall of annealing box 3, so that plug block 6 is inserted into annealing box 3, and heat-resistant spring one 8 is restored to deformation by releasing plug plate 7, to push plug plate 7 to insert plug block 6, limit plug block 6, so that plug block 6 drives heater 5 to be stable, under the action of heater 5, it is convenient for subsequent heat treatment;

[0026] Through the setting of the rotating cylinder 92, the straight seam welded pipe can be placed and used, the servo motor 91 is started to drive the output shaft to rotate, so as to drive the rotating cylinder 92 to rotate, and then drive the straight seam welded pipe to rotate, so as to ensure the uniformity of the straight seam welded pipe heating, and when the rotating cylinder 92 rotates, the limiting seat 95 can slide along the surface of the rotating cylinder 92, and under the deformation action of the heat-resistant spring two 96, the limiting seat 95 can always contact with the rotating cylinder 92, under the limiting action of the limiting seat 95, the rotating cylinder 92 can be limited in rotation, avoiding the centrifugal shaking problem of the rotating cylinder 92.

[0027] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A device for heat treatment of the weld of a straight-seam welded pipe, comprising a base (1), characterised in that: The lower end of the base (1) is fixedly connected with a support frame (2), the upper end of the base (1) is fixedly connected with a tempering box (3), the left end of the tempering box (3) is provided with a box cover (4), the box cover (4) is in contact with the base (1), the inner side wall of the tempering box (3) is in contact with a heater (5), the end face of the heater (5) is fixedly connected with a plug block (6), the plug block (6) is in sliding connection with the tempering box (3), the inner wall of the tempering box (3) is in sliding connection with a plug plate (7), the vertical part of the plug plate (7) is in sliding connection with the plug block (6), the tempering box (3) is provided with a uniform heating mechanism (9).

2. A device for heat treating the weld of a straight-seam welded pipe according to claim 1, characterized in that: The support frame (2) is provided with two, and the two support frames (2) are symmetrically distributed on the base (1).

3. A device for heat treating the weld of a straight-seam welded pipe as claimed in claim 1, characterized in that: The horizontal part of the plug plate (7) is welded with a heat-resistant spring one (8), and the other end of the heat-resistant spring one (8) is welded with the tempering box (3).

4. A device for heat treating the weld of a straight-seam welded pipe as set forth in claim 1, characterized in that: The uniform heating mechanism (9) comprises a servo motor (91), the right end of the tempering box (3) is fixedly installed with the servo motor (91), the output shaft of the servo motor (91) is in rotary connection with the tempering box (3), the output shaft of the servo motor (91) is fixedly connected with a rotary cylinder (92), the rotary cylinder (92) is located in the interior of the tempering box (3), the inner wall of the tempering box (3) is in sliding connection with an expansion plate (94), the end face of the side close to the rotary cylinder (92) of the expansion plate (94) is fixedly connected with a limiting seat (95), the limiting seat (95) is in contact with the rotary cylinder (92), the outer side of the expansion plate (94) is provided with a heat-resistant spring two (96).

5. A device for heat treating the weld of a straight-seam welded pipe according to claim 4, characterized in that: A plurality of flow-through holes (93) are formed in the surface of the rotary cylinder (92), and the plurality of flow-through holes (93) are uniformly distributed on the rotary cylinder (92).

6. A device for heat treating the weld of a straight-seam welded pipe as claimed in claim 4, characterized in that: One end of the heat-resistant spring two (96) is welded with the limiting seat (95), and the other end of the heat-resistant spring two (96) is welded with the tempering box (3).

Images