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CN-224209325-U - Welding inflation blocking protection device

CN224209325UCN 224209325 UCN224209325 UCN 224209325UCN-224209325-U

Abstract

The utility model provides a welding inflation plugging protection device, which relates to the technical field of steel pipe welding and comprises a middle shaft rod, wherein a fixed disc is arranged at the upper end of the middle shaft rod, an air outlet hole is penetrated and arranged in the middle shaft rod and the fixed disc, an air belt interface is arranged at the lower end of the middle shaft rod, the air belt interface is in through connection with the air outlet hole, and a sliding disc is movably penetrated and arranged at the outer side of a shaft body of the middle shaft rod. According to the utility model, the isolation layer and the elastic rubber ring which are made of the high-elastic three-proofing cloth form a double sealing structure, so that independent local sealing spaces are formed at two sides of a pipeline welding position, instead of inflating the whole pipeline, compared with the traditional integral argon filling method which needs to fill up the whole space of a large-diameter or long pipeline, the design can greatly reduce the consumption of inert gas, obviously reduce the gas purchasing cost, simultaneously avoid a large amount of inert gas from being directly discharged to the atmosphere, accord with the green construction concept, and realize energy conservation and emission reduction.

Inventors

  • YAO LINQIANG
  • LI ZHENGBIN
  • WANG LI
  • Pei Shaokang
  • LIU ZHUOHUI

Assignees

  • 重庆化医易筑装配式能源技术有限公司

Dates

Publication Date
20260508
Application Date
20250529

Claims (6)

  1. 1. The welding inflation blocking protection device comprises a middle shaft rod (1) and is characterized in that a fixed disc (8) is arranged at the upper end of the middle shaft rod (1), an air outlet hole is formed in the middle shaft rod (1) and the fixed disc (8) in a penetrating mode, an air belt joint (3) is arranged at the lower end of the middle shaft rod (1), the air belt joint (3) and the air outlet hole are in penetrating connection, a sliding disc (4) is movably arranged on the outer side of a shaft body of the middle shaft rod (1) in penetrating mode, a plurality of second supporting rods (7) are arranged on the outer side of the fixed disc (8) in a hinged mode, the second supporting rods (7) are distributed in an umbrella shape by taking the center of the fixed disc (8) as an apex, a plurality of first supporting rods (5) are arranged on the outer side of the sliding disc (4) in a hinged mode, one ends, close to each other, of the first supporting rods (5) and the second supporting rods (7) are hinged, and isolation layers are arranged on the outer sides of the second supporting rods (7).
  2. 2. The welding inflation plugging protection device according to claim 1, wherein a lock catch (2) is arranged at the lower end of the rod body of the center shaft rod (1), the lock catch (2) is in locking connection with the sliding disc (4), a traction rope fixing ring is arranged on the outer side of the sliding disc (4), and a traction rope is wound on the traction rope fixing ring and used for tightly binding and connecting the sliding disc (4) with the center shaft rod (1).
  3. 3. The welding inflation plugging protection device according to claim 1, wherein an elastic rubber ring (6) is arranged on the outer side of one end, close to each other, of the first supporting rod (5) and the second supporting rod (7), and the upper end of the elastic rubber ring (6) is attached to the isolation layer.
  4. 4. The welding, inflating and plugging protection device according to claim 1, wherein sliding rings (11) are movably arranged at the upper end and the lower end of the outer side of the shaft body of the middle shaft rod (1) between the fixed disc (8) and the sliding disc (4), and a plurality of small supporting arms (9) are respectively arranged at the outer sides of the sliding rings (11) in a hinged manner.
  5. 5. The welding, inflating and plugging protection device according to claim 4, wherein the small supporting arm (9) at the upper end is hinged with the second supporting rod (7), and the small supporting arm (9) at the lower end is hinged with the first supporting rod (5).
  6. 6. The welding inflation plugging protection device according to claim 4, wherein a spring (10) is arranged between the sliding ring (11) and the fixed disc (8) at the upper end, the spring (10) is arranged between the sliding ring (11) and the sliding disc (4) at the lower end, and the springs (10) are respectively sleeved on the outer side of the shaft body of the middle shaft rod (1).

Description

Welding inflation blocking protection device Technical Field The utility model relates to the technical field of steel pipe welding, in particular to a welding inflation plugging protection device. Background In the welding of steel pipes, in addition to the proper protection of a high-temperature molten pool on the front surface of a welding line, the back surface of the welding line of the pipeline with high welding quality requirement must also take necessary measures to block the oxidation effect of oxygen in the air on the welding line. If no weld protection measures are taken, the weld metal on the back is easy to oxidize in the welding process, alloy elements are burnt out, welding defects are easy to generate, and the mechanical property and corrosion resistance of the weld metal are reduced. Inert gas is generally regarded as a better protecting medium, in the existing pipeline welding process, an integral argon filling method is generally adopted to seal two ends of a pipeline, inert gas argon is filled for protecting, so that the oxygen content in the pipeline is reduced, the oxidation degree is reduced, however, in the method, when the pipeline is relatively short for the small-diameter pipeline or the pipe fitting group, the whole argon filling can be adopted, the method is relatively simple, and when the pipeline is relatively long for the large-diameter pipeline or the pipe fitting group, the consumption of the whole argon filling gas is very large, so that the production cost is high; the inflation time is long, so that the production efficiency is low, meanwhile, due to the fact that the inner space of the pipeline is large, even if a large amount of inert gas is inflated, air cannot be effectively emptied, the protection effect is poor, and the welding quality is seriously affected, so that the welding inflation blocking protection device is provided, and the problems are solved. Disclosure of utility model The utility model mainly aims to provide a welding inflation plugging protection device, which solves the problems that inert gas is regarded as a better protection medium, in the existing pipeline welding process, an integral argon filling method is generally adopted to seal two ends of a pipeline, inert gas argon is filled for protection, so that the oxygen content in the pipeline is reduced, and the oxidation degree is reduced; the inflation time is long, causes production efficiency to be low, and even if a large amount of inert gas is filled into the pipeline because of the large internal space of the pipeline, the air can not be effectively emptied, the protection effect is poor, and the welding quality is seriously affected. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: The utility model provides a welding inflation shutoff protection device, includes well axostylus axostyle, the fixed disk is installed to the upper end of well axostylus axostyle, the inside of well axostylus axostyle and fixed disk is run through and is equipped with the venthole, the gas area interface is installed to the lower extreme of well axostylus axostyle, and link up between gas area interface and the venthole, the pole body outside movable penetration of well axostylus axostyle is installed and is slided the dish, a plurality of second bracing pieces are installed through the mode of hinge connection in the outside of fixed disk, and the second bracing piece uses the center of fixed disk as the summit and be umbrella-shaped distribution, install if first bracing piece through the mode of hinge connection in the outside of slided the dish, the one end hinge connection that first bracing piece and second bracing piece are close to each other, the isolation layer is installed in the outside of second bracing piece. Preferably, a lock catch is arranged at the lower end of the rod body of the center shaft rod, the lock catch is in locking connection with the sliding disc, a traction rope fixing ring is arranged on the outer side of the sliding disc, a traction rope is wound on the traction rope fixing ring, and the traction rope is used for tightly binding and connecting the sliding disc with the center shaft rod. Preferably, an elastic rubber ring is arranged at the outer side of one end, close to each other, of the first support rod and the second support rod, and the upper end of the elastic rubber ring is attached to the isolation layer. Preferably, sliding rings are movably arranged at the upper end and the lower end of the outer side of the middle shaft body between the fixed disc and the sliding disc in a penetrating manner, and a plurality of supporting small arms are arranged at the outer sides of the sliding rings in a hinged manner respectively. Preferably, the support small arm at the upper end is hinged with the second support rod, and the support small arm at the lower end is hinged with the first support rod. Preferably, a spring is ar