CN215699093U

CN215699093U - Welding preheating device for barrel circumferential seam

Info

Publication number: CN215699093U
Application number: CN202121780956.XU
Authority: CN
Inventors: 邵蕾; 周军; 谢军; 李鸿双
Original assignee: Honghua Offshore Oil & Gas Equipment Jiangsu Co ltd
Current assignee: Honghua Offshore Oil & Gas Equipment Jiangsu Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-02-01
Anticipated expiration: 2031-08-02

Abstract

The utility model discloses a welding preheating device for a barrel circumferential seam, which comprises a preheating device body, a heat preservation device and a support, wherein the preheating device body comprises a main pipe and a plurality of spray pipes uniformly fixed on the main pipe, the heat preservation device comprises two arc-shaped heat preservation covers and a movable base arranged below the heat preservation covers, a height-adjustable support is arranged between the heat preservation covers and the base, the two heat preservation covers are fixedly connected through a tensioning clamp, and the main pipe is fixedly connected with a concave surface of the heat preservation covers through a fixed support. The utility model does not need to occupy manpower in the preheating process, thereby saving a large amount of manpower. The preheating device body preheats for many shower nozzles simultaneously, preheats more fully evenly, and preheating temperature has obtained fine assurance. The heat preservation cover can effectively ensure that the preheating efficiency is high, the preheating temperature is uniform, and the influence of the environment is not easy to occur.

Description

Welding preheating device for barrel circumferential seam

Technical Field

The utility model relates to the technical field of welding equipment, in particular to a welding preheating device for a barrel circumferential seam.

Background

With the advocation of the national green development concept of energy conservation and environmental protection, the offshore wind power project is developed rapidly, and large-scale, clustering and large-scale development trends are future development trends. The offshore wind power foundation is provided with single piles, jacket and the like, the main structural form is a tubular structure, the offshore wind power foundation is characterized by large weight, large diameter wall thickness, long length and the like, and the products need to be preheated before being welded according to relevant standards and process file requirements. At present, a plurality of hand-held baking torches are usually adopted for continuous baking and preheating, and the preheating mode has the defects of more occupied workers, insufficient and uneven preheating, particularly prominent preheating of a circular seam, easy occurrence of welding quality problems and intangible increase of welding difficulty.

Prior art CN 203171163U discloses a welding preheating device, including convex main line, intake pipe, jet-propelled pipe, support. However, the technology still has some defects: the problems of low preheating and temperature rising efficiency, uneven preheating temperature, large influence of external environment and incapability of ensuring the interlayer temperature exist.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned defects, the present invention aims to provide a welding preheating device for a cylinder circumferential seam, which improves the welding quality and the production efficiency. When the large-scale barrel circumferential weld is welded, the preheating efficiency is high, the preheating temperature is uniform, and the influence of the environment is not easy to be caused.

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a welding preheating device for barrel circumferential weld, includes the preheating device body, the preheating device body is including being responsible for and evenly be fixed in a plurality of spray tubes on being responsible for, still includes heat preservation device, and heat preservation device includes two arcs and keeps warm to cover and set up in the portable base of heat preservation cover below, keeps warm and is equipped with height-adjustable support between cover and the base, and two keep warm and cover through tensioning anchor clamps fixed connection, keep warm the concave surface of cover and be equipped with the heat preservation, are responsible for the concave surface fixed connection through fixed bolster and heat preservation cover. Preheat the barrel circumferential weld through the preheating device body, the cooperation keeps warm with the cover that keeps warm, can effectively guarantee to preheat the intensification efficient, preheat the even, the difficult influence that receives the environment of temperature.

Further, be responsible for the arc pipe, the one end of being responsible for is equipped with the shrouding, and the other end of being responsible for is equipped with quick-connect joint, ball valve and backfire preventer, is responsible for through quick-connect joint and gas pipe fixed connection, evenly is equipped with a plurality of air vents on the concave surface of being responsible for, and the one end and the air vent fixed connection of spray tube are equipped with flow control valve on the spray tube. Before preheating the barrel circumferential weld, the ball valve on the main pipe and the flow control valve on the spray pipe are closed, then the main pipe is fixedly connected with the gas pipe through the quick connector, and then the barrel circumferential weld can be preheated by adjusting the ball valve on the main pipe and the flow control valve on the spray pipe.

Furthermore, the height-adjustable support comprises a hollow support rod and an adjusting rod, one end of the support rod is fixedly connected with the base, one end of the adjusting rod is provided with a rack, the other end of the adjusting rod is fixedly connected with the heat-preservation cover, the other end of the support rod is slidably connected with the rack end of the adjusting rod, one side of the other end of the support rod is provided with a motor, a gear is arranged on a shaft of the motor, and the gear is meshed with the rack of the adjusting rod. The gear is driven to rotate by the starting motor, the gear rotates to drive the meshed rack to move up and down, and accordingly the adjusting rod moves up and down, so that the height of the heat-insulating cover on the height-adjustable support is changed, and the operation is convenient.

Further, the heat preservation layer is a polyurethane foam heat preservation layer, a heat insulation layer is arranged between the heat preservation layer and the heat preservation cover, and the heat insulation layer is a glass fiber heat insulation layer. The heat-insulating material has good heat-insulating effect and higher tensile strength, can meet the requirement of fire protection specifications, and ensures the use safety.

Furthermore, a through hole is arranged on the heat insulation cover, a heat insulation sleeve is arranged in the through hole, and the heat insulation sleeve is movably sleeved with a gas pipe. The gas pipe of being convenient for is at the heat preservation cover internalization, and then adjusts the height of heat preservation cover as height-adjustable support, and heat preservation cover and gas pipe carry out the cooperation activity.

Further, the curvature of the heat-insulating cover is consistent with that of the main pipe. When the barrel circumferential weld is preheated, the preheating is more uniform, and the preheating efficiency is higher.

The utility model has the beneficial effects that:

1. the utility model does not need to occupy manpower in the preheating process, and saves a large amount of manpower compared with the previous preheating mode of holding the baking torch by a plurality of persons.

2. The preheating device body of the utility model adopts a plurality of spray heads to preheat simultaneously, the preheating is more sufficient and uniform, and the preheating temperature is well ensured.

3. The heat-insulating cover is arranged outside the preheating device body, so that high preheating and temperature rising efficiency and uniform preheating temperature can be effectively guaranteed, and the preheating device is not easily influenced by the environment.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic structural diagram of the height adjustable bracket of the present invention.

Wherein: 1. the quick-connection type heat-insulation pipe comprises a main pipe, 2, a spray pipe, 3, a heat-insulation cover, 4, a base, 5, a height-adjustable support, 6, a tensioning clamp, 7, a heat-insulation layer, 8, a heat-insulation layer, 11, a sealing plate, 12, a quick-connection joint, 13, a ball valve, 51, a support rod, 52, an adjusting rod, 53, a rack, 54, a motor, 55 and a gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a welding preheating device for barrel circumferential weld, including the preheating device body, the preheating device body is including being responsible for 1 and evenly be fixed in a plurality of spray tubes 2 on being responsible for 1, still include the heat preservation device, the heat preservation device includes two arc heat preservation covers 3, and set up in the portable base 4 of heat preservation cover 3 below, be equipped with height-adjustable support 5 between heat preservation cover 3 and the base 4, two heat preservation covers 3 through 6 fixed connection of tensioning anchor clamps, the concave surface of heat preservation cover 3 is equipped with heat preservation 7, be responsible for 1 through the fixed bolster with the concave surface fixed connection that covers 3 that keeps warm. Preheat the barrel circumferential weld through the preheating device body, the cooperation keeps warm with heat preservation cover 3, can effectively guarantee to preheat the intensification efficient, preheat the even, the difficult influence that receives the environment of temperature.

Be responsible for 1 and be the arc pipe, the one end of being responsible for 1 is equipped with shrouding 11, and the other end of being responsible for 1 is equipped with quick-connect joint 12, ball valve 13 and backfire arrestor, is responsible for 1 and evenly is equipped with a plurality of air vents on the concave surface of being responsible for 1 through quick-connect joint 12 and gas pipe fixed connection, the one end and the air vent fixed connection of spray tube 2 are equipped with flow control valve on the spray tube 2. Before preheating the barrel circumferential weld, firstly closing the ball valve 13 on the main pipe 1 and the flow regulating valve on the spray pipe 2, then fixedly connecting the main pipe 1 and the gas pipe through the quick connector 12, and then preheating the barrel circumferential weld by regulating the ball valve 13 on the main pipe 1 and the flow regulating valve on the spray pipe 2.

The main pipe 1 in the embodiment can adopt I-grade pipe of DN15-40S, the length is 1800mm, and vent holes with phi 4mm are arranged on the main pipe 1 every 300 mm. The spray pipe 2 can be made of the same material and the same specification, has the length of 80mm and is welded at the vent hole. Preparing a pipe which is made of the same material, has the same specification and is 1000mm long as a fixing bracket.

As shown in fig. 3, the height-adjustable bracket 5 includes a hollow supporting rod 51 and an adjusting rod 52, one end of the supporting rod 51 is fixedly connected with the base 4, one end of the adjusting rod 52 is provided with a rack 53, the other end of the adjusting rod 52 is fixedly connected with the heat-insulating cover 3, the other end of the supporting rod 51 is slidably connected with the rack 53 of the adjusting rod 52, one side of the other end of the supporting rod 51 is provided with a motor 54, a gear 55 is arranged on a shaft of the motor 54, and the gear 55 is engaged with the rack 53 of the adjusting rod 52. Before preheating the circumferential seam of the cylinder body, whether the height of the heat-insulating cover 3 needs to be adjusted or not is observed. When the height of the heat preservation cover 3 needs to be adjusted, the motor 54 is started, the motor 54 rotates to drive the gear 55 to rotate, the gear 55 rotates to drive the meshed rack 53 to move up and down, and accordingly the adjusting rod 52 moves up and down, so that the height of the heat preservation cover 3 on the height-adjustable support 5 is changed, and the operation is convenient.

The heat preservation layer 7 is a polyurethane foam heat preservation layer, a heat insulation layer 8 is arranged between the heat preservation layer 7 and the heat preservation cover 3, and the heat insulation layer 8 is a glass fiber heat insulation layer. The heat-insulating material has good heat-insulating effect and higher tensile strength, can meet the requirement of fire protection specifications, and ensures the use safety.

The heat preservation cover 3 is provided with a through hole, a heat preservation sleeve is arranged in the through hole, and the heat preservation sleeve is movably sleeved with a gas pipe. The gas pipe of being convenient for is at the cover 3 internalization that keeps warm, and then works as height-adjustable support 5 and highly adjusts the cover 3 that keeps warm, keeps warm and covers and gas pipe and carry out the cooperation activity.

The curvature of the heat-insulating cover 3 and the curvature of the main pipe 1 are consistent with the curvature of the cylinder. When the barrel circumferential weld is preheated, the preheating is more uniform, and the preheating efficiency is higher.

The working principle is as follows: before welding preheating, the barrel is placed on a roller carrier and is in a rolling state. The movable base 4 is moved to push one side of the cylinder, the motor 54 is started, the motor 54 rotates to drive the gear 55 to rotate, the gear 55 rotates to drive the meshed rack 53 to move up and down, and accordingly the adjusting rod 52 moves up and down, so that the heat-insulating cover 3 can reach the required height through the height-adjustable support 5. The two heat preservation covers 3 are fixedly connected through a tensioning clamp 6. And opening the ball valve 13 on the adjusting main pipe 1 and the flow adjusting valve on the spray pipe 2, filling the main pipe 1 and the spray pipe 2 with gas, and burning the gas through the nozzle of the spray pipe 2 to preheat the cylinder. The flow of the gas can be controlled by adjusting the ball valve, so that the aim of controlling the preheating temperature is fulfilled. During preheating, the heat preservation layer 7 and the heat insulation layer 8 on the heat preservation cover 3 play a role in heat preservation and heat insulation, have higher tensile strength, can meet the requirements of fire prevention specifications, and ensure the use safety.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A welding preheating device for barrel circumferential weld, including the preheating device body, the preheating device body is including being responsible for and evenly being fixed in a plurality of spray tubes in charge, its characterized in that: the heat preservation device comprises two arc-shaped heat preservation covers and a movable base arranged below the heat preservation covers, a height-adjustable support is arranged between each heat preservation cover and the corresponding base, the heat preservation covers are fixedly connected through tensioning clamps, a heat preservation layer is arranged on the concave surface of each heat preservation cover, and the main pipe is fixedly connected with the concave surface of each heat preservation cover through a fixing support.

2. The welding preheating device for the cylinder circumferential seam according to claim 1, characterized in that: the gas pipe is characterized in that the main pipe is an arc pipe, a sealing plate is arranged at one end of the main pipe, a quick connector, a ball valve and a backfire preventer are arranged at the other end of the main pipe, the main pipe is fixedly connected with the gas pipe through the quick connector, a plurality of vent holes are uniformly formed in the concave surface of the main pipe, one end of the spray pipe is fixedly connected with the vent holes, and a flow regulating valve is arranged on the spray pipe.

3. The welding preheating device for the cylinder circumferential seam according to claim 1, characterized in that: the height-adjustable support comprises a hollow support rod and an adjusting rod, one end of the support rod is fixedly connected with the base, one end of the adjusting rod is provided with a rack, the other end of the adjusting rod is fixedly connected with the heat-preservation cover, the other end of the support rod is connected with the rack end of the adjusting rod in a sliding mode, one side of the other end of the support rod is provided with a motor, a gear is arranged on a shaft of the motor, and the gear is meshed with the rack of the adjusting rod.

4. The welding preheating device for the cylinder circumferential seam according to claim 1, characterized in that: the heat preservation is polyurethane foam heat preservation, be equipped with the insulating layer between heat preservation and the heat preservation cover, the insulating layer is the glass fiber insulating layer.

5. The welding preheating device for the cylinder circumferential seam according to claim 1, characterized in that: the heat-insulating cover is provided with a through hole, a heat-insulating sleeve is arranged in the through hole, and the heat-insulating sleeve is movably sleeved with a gas pipe.

6. The welding preheating device for the cylinder circumferential seam according to claim 1, characterized in that: the curvature of the heat preservation cover is consistent with that of the main pipe.