CN213257816U

CN213257816U - Reelpipe extension welding preheating device

Info

Publication number: CN213257816U
Application number: CN202022218219.2U
Authority: CN
Inventors: 任凯; 汤世云; 王刚; 宋广吉; 卫旭敏; 韦生; 姬锐; 李彬
Original assignee: COOEC Fluor Heavy Industries Co Ltd
Current assignee: COOEC Fluor Heavy Industries Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-05-25
Anticipated expiration: 2030-09-30

Abstract

The utility model relates to the field of welding technique, a reelpipe extension welding preheating device is disclosed, the on-line screen storage device comprises a base, the upper end of base is equipped with downwards concavely puts the tube seat, it is convex recess to put the tube seat, the electric heating piece has been laid to the bottom surface of putting the tube seat, the side of base is equipped with lug and handle. This preheating device places in the below of pipeline groove when using, and electric heating piece ohmic heating, electric heating piece are arc, can wrap up the pipeline groove, and is bigger with the area of contact of pipeline groove, compares in traditional preheating device, preheats more evenly, preheats faster, convenient and fast. And if the pipeline is rotated at a constant speed, the pipeline is heated more uniformly. And the design of lug and handle makes things convenient for this preheating device to be lifted by crane or remove, is convenient for carry to each place on scene and uses.

Description

Reelpipe extension welding preheating device

Technical Field

The utility model relates to the field of welding technique, especially, relate to a reelpipe extension welding preheating device.

Background

In the fields of petrochemical industry, ocean platforms and the like, metal pipelines are often used for conveying various media such as oil, gas and water, the requirements are high, the quality requirements on the pipelines are strict, and therefore the welding problem of the pipelines is particularly important. The welding of large-diameter and large-wall-thickness pipelines, pipe coiling and lengthening needs to use efficient welding methods such as submerged arc mechanical welding. The reel pipe and extension welding of the carbon steel pipeline, in order to guarantee the welding quality, prevent welding defect problems such as cold crack, etc., in analyzing weldability and designing welding process, a very critical step is preheating before welding. The preheating before welding can remove the water around the pipe groove, so as to avoid the generation of air holes in the welding seam; the preheating before welding can reduce the cooling speed of the welded seam after welding, and prevent the welding problems of welding cracks and the like caused by the brittle and hard tissues such as martensite and the like generated due to the excessively high cooling speed. Therefore, pre-weld preheating is particularly important for welding carbon steel material pipes. When in-situ welding is carried out, the traditional preheating mode comprises a baking handle heating mode and an electric heating mode, wherein the baking handle heating mode adopts flame baking handle heating and electric heating, the heating is carried out by one section, the temperature is not well controlled, and the preheating is not uniform; the mode of electrical heating is that directly lay the electrical heating piece on the pipeline, gets the electrical heating piece again after having heated, begins the welding, and the electrical heating piece removes the back, and the temperature also reduces easily, and the temperature is inhomogeneous, and when welding was discontinuous midway, still need preheat again, preheats not thorough inhomogeneous, and the effect is unsatisfactory, influences welding quality and welding efficiency. The two preheating modes have limited heating areas, uniform preheating cannot be guaranteed, and accurate and stable preheating temperature cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a reelpipe extension welding preheating device, the inhomogeneous problem of preheating has been solved in one aspect of it.

The utility model provides a technical scheme that its technical problem adopted does:

the utility model provides a reelpipe extension welding preheating device, includes the base, the upper end of base is equipped with downwards concavely puts the tube seat, it is convex recess to put the tube seat, put the bottom surface in tube seat and laid electric heating plate, the side of base is equipped with lug and handle.

As an improvement of the technical scheme, the cross section of the base is rectangular, and the base is formed by welding steel plates.

As an improvement of the technical scheme, the handle is a cuboid groove arranged on the side surface of the base.

As an improvement of the technical scheme, the electric heating sheet is laid on one part of the bottom surface of the pipe placing groove, and the other part of the bottom surface of the pipe placing groove is hollowed out.

As an improvement of the above technical solution, the electric heating plates are located at the middle and rear of the bottom surface of the pipe placing groove, a motor is installed inside the base, a first rotating wheel is installed at the output end of the motor, the first rotating wheel is located at the lower side of the front part of the pipe placing groove, the first rotating wheel is located in a gap between the electric heating plates and the front side wall of the base, the first rotating wheel is located at the center position of the left and right direction of the base, the highest point of the outer circumference of the first rotating wheel is higher than the lowest point of the inner circumference of the electric heating plates, and the highest point of the outer circumference of the first rotating wheel is higher than the lowest point of the inner circumference of.

As an improvement of the above technical solution, the base is further provided with a second rotating wheel and a third rotating wheel, the second rotating wheel and the third rotating wheel are respectively located on the left side and the right side of the first rotating wheel, and the outer circumferences of the second rotating wheel and the third rotating wheel are intersected with the inner circumference of the electric heating sheet when viewed from the rear end to the front end.

As an improvement of the technical scheme, the second rotating wheel and the third rotating wheel are driven by a motor to rotate, a first gear is arranged at the output end of the motor, a second gear and a third gear are respectively arranged on the second rotating wheel and the third rotating wheel, and the second gear and the third gear are both directly or indirectly meshed with the first gear.

As an improvement of the technical scheme, anti-skidding sleeves are arranged on the circumferences of the first rotating wheel, the second rotating wheel and the third rotating wheel.

The utility model discloses wherein the beneficial effect of one side has:

according to this disclosed an aspect, this preheating device places in the below of pipeline groove when using, and electric heating piece ohmic heating, electric heating piece are arc, can wrap up the pipeline groove, and is bigger with the area of contact of pipeline groove, compares in traditional preheating device, preheats more evenly, preheats faster, convenient and fast. And if the pipeline is rotated at a constant speed, the pipeline is heated more uniformly. And the design of lug and handle makes things convenient for this preheating device to be lifted by crane or remove, is convenient for carry to each place on scene and uses.

Drawings

The present invention will be further described with reference to the accompanying drawings and specific embodiments, wherein:

fig. 1 is a schematic perspective view of embodiment 1 of the present invention;

fig. 2 is a schematic perspective view of embodiment 2 of the present invention.

Detailed Description

Example 1

Referring to fig. 1, the utility model discloses a reelpipe extension welding preheating device, including base 1, base 1's upper end is equipped with downwards concavely and puts tub of 2, it is convex recess to put tub of 2, put the bottom surface of tub of 2 and laid electric heating plate 3, base 1's side is equipped with lug 4 and handle 5.

Specifically, this preheating device places in the below of pipeline groove when using, and the electrical heating of 3 circular arc of electrical heating piece, electrical heating piece 3 can wrap up the pipeline groove, and is bigger with the area of contact of pipeline groove, compares in traditional preheating device, preheats more evenly, preheats faster, convenient and fast. And if the pipeline is rotated at a constant speed, the pipeline is heated more uniformly. And the design of the lifting lug 4 and the handle 5 is convenient for the preheating device to be lifted or moved, and is convenient for being transported to various places on site for use.

Furthermore, the cross section of the base 1 is rectangular, and the base 1 is formed by welding steel plates. Base 1 is the cuboid main part of upper end fretwork, and the cuboid main part is formed by the carbon steel sheet welding that has better intensity, better performance and thickness, and welded connected mode is stable workable.

Moreover, the electric heating plate 3 is paved on the whole bottom surface of the pipe placing groove 2, the electric heating plate 3 comprises a supporting sheet at the lower part and a heating main body paved at the upper end of the supporting sheet, and the supporting sheet is designed to better support a pipeline.

In addition, the lifting lug 4 is fixed on the base 1 by welding. The handle 5 is a cuboid groove arranged on the side surface of the base 1, and the handle 5 is also fixed on the side wall of the base 1 in a welding mode. The lifting lugs 4 are two, and the two lifting lugs 4 are respectively positioned on two opposite side walls of the base 1. The other two opposite side walls of the base 1 are provided with two handles 5, and the number of the handles 5 on each side wall is two.

Example 2

Referring to fig. 2, the utility model also discloses a reelpipe extension welding preheating device, the difference of this embodiment and embodiment 1 lies in following part:

specifically, the electric heating plate 3 is laid on one part of the bottom surface of the pipe placing groove 2, and the other part of the bottom surface of the pipe placing groove 2 is hollowed out.

In this embodiment, the electric heating plates 3 are located at the middle and the rear of the bottom surface of the pipe placing groove 2, the motor is installed inside the base 1, the first rotating wheel 6 is installed at the output end of the motor, the first rotating wheel 6 is located at the lower side of the front part of the pipe placing groove 2, the first rotating wheel 6 is located in the gap between the electric heating plates 3 and the front side wall of the base 1, the first rotating wheel 6 is located at the central position of the base 1 in the left-right direction, the highest point of the outer circumference of the first rotating wheel 6 is higher than the lowest point of the inner circumference of the electric heating plates 3, and the highest point of the outer circumference of the first rotating wheel 6 is 5mm-10mm higher than the lowest point of the inner. When the device is used, the motor drives the first rotating wheel 6 to rotate, the first rotating wheel 6 drives the pipeline placed on the device to rotate, and the pipeline is convenient to heat uniformly.

Further, a second rotating wheel 7 and a third rotating wheel 8 are further mounted on the base 1, the second rotating wheel 7 and the third rotating wheel 8 are respectively located on the left side and the right side of the first rotating wheel 6, and when viewed from the rear end to the front end, the outer circumferences of the second rotating wheel 7 and the third rotating wheel 8 are intersected with the inner circumference of the electric heating plate 3. The first rotating wheel 6, the second rotating wheel 7 and the third rotating wheel 8 are all tangent to the same circle, the tangent circle is concentric with the inner circle of the electric heating piece 3, and the radius of the tangent circle is smaller than that of the inner circle of the electric heating piece 3. The second wheel 7 and the third wheel 8 provide support for the pipe.

And, second runner 7 and third runner 8 are driven by the motor and are rotated, the output of motor is equipped with first gear, be equipped with second gear and third gear on second runner 7 and the third runner 8 respectively, second gear and third gear all with first gear direct or indirect meshing. The first rotating wheel 6, the second rotating wheel 7 and the third rotating wheel 8 drive the pipeline to rotate together, so that the pipeline can rotate more smoothly.

In addition, the circumferences of the first rotating wheel 6, the second rotating wheel 7 and the third rotating wheel 8 are provided with anti-skidding sleeves. The pipeline is prevented from slipping relative to the first rotating wheel 6, the second rotating wheel 7 and the third rotating wheel 8 in the process of being driven to rotate, and the driving efficiency is improved.

It is noted that the terms first, second, third, etc. are used herein to describe various components or features, but these components or features are not limited by these terms. These terms are only used to distinguish one element or part from another element or part. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. For convenience of description, spatially relative terms such as "inner", "outer", "upper", "lower", "left", "right", "upper", "left", "right", and the like are used herein to describe the orientation relation of the components or parts in the present embodiment, but these spatially relative terms do not limit the orientation of the technical features in practical use.

The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments, and the technical effects of the present invention should be all included in the protection scope of the present invention as long as the technical effects are achieved by any of the same or similar means.

Claims

1. The utility model provides a reelpipe extension welding preheating device which characterized in that: the pipe placing device is characterized by comprising a base (1), wherein a pipe placing groove (2) is arranged at the upper end of the base (1) in a downward concave mode, the pipe placing groove (2) is an arc-shaped groove, an electric heating sheet (3) is laid on the bottom surface of the pipe placing groove (2), and a lifting lug (4) and a handle (5) are arranged on the side surface of the base (1).

2. The coil pipe lengthening welding preheating device according to claim 1, wherein: the cross section of the base (1) is rectangular, and the base (1) is formed by welding steel plates.

3. The coil pipe lengthening welding preheating device according to claim 1 or 2, wherein: the handle (5) is a cuboid groove arranged on the side surface of the base (1).

4. The coil pipe lengthening welding preheating device according to claim 1, wherein: the electric heating plate (3) is laid on one part of the bottom surface of the pipe placing groove (2), and the other part of the bottom surface of the pipe placing groove (2) is hollow.

5. The coil pipe lengthening welding preheating device according to claim 4, wherein: the utility model discloses a tubular duct, including base (1), electric heating plate (3), first runner (6), and first runner (6) are located the anterior downside of putting tub (2), first runner (6) are located the space between electric heating plate (3) and base (1) front side wall, first runner (6) are located the central point of base (1) left and right sides direction, and the highest point of first runner (6) outer circumference is higher than the minimum point of electric heating plate (3) inner circumference, the highest point of first runner (6) outer circumference is 5mm-10mm higher than the lowest point of electric heating plate (3) inner circumference.

6. The coil pipe lengthening welding preheating device according to claim 5, wherein: the base (1) is further provided with a second rotating wheel (7) and a third rotating wheel (8), the second rotating wheel (7) and the third rotating wheel (8) are respectively located on the left side and the right side of the first rotating wheel (6), and the outer circumferences of the second rotating wheel (7) and the third rotating wheel (8) are intersected with the inner circumference of the electric heating sheet (3) when seen from the rear end to the front end.

7. The coil pipe lengthening welding preheating device according to claim 6, wherein: the second rotating wheel (7) and the third rotating wheel (8) are driven by a motor to rotate, a first gear is arranged at the output end of the motor, a second gear and a third gear are respectively arranged on the second rotating wheel (7) and the third rotating wheel (8), and the second gear and the third gear are both directly or indirectly meshed with the first gear.

8. The coil pipe lengthening welding preheating device according to claim 6, wherein: and anti-skidding sleeves are arranged on the circumferences of the first rotating wheel (6), the second rotating wheel (7) and the third rotating wheel (8).