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CN-224209313-U - Welding protection device for gas shield welding of metal pipeline

CN224209313UCN 224209313 UCN224209313 UCN 224209313UCN-224209313-U

Abstract

The utility model relates to a welding protection device for gas shield welding of a metal pipeline, which belongs to the field of welding auxiliary devices and comprises a first sealing element and a second sealing element, wherein the first sealing element and the second sealing element are used for forming two-end sealing in the metal pipeline at two sides of a welding seam, the first sealing element and the second sealing element are connected through an air inlet pipe and a connecting element, the air inlet pipe penetrates through the first sealing element, one end of the connecting element is rotationally connected with the air inlet pipe, and the other end of the connecting element is fixedly connected with the second sealing element. The utility model provides a welding protection device for gas-shielded welding of a metal pipeline, which achieves the effect of pertinently providing gas protection conditions for a welding line area through the cooperation of a first sealing piece, a second sealing piece, an air inlet pipe, a connecting piece and the like, and is movable in a straight pipe and at an elbow part as a whole, so that the gas protection conditions can be provided for welding lines at different positions in sequence.

Inventors

  • TAO YUAN

Assignees

  • 中国化学工程第三建设有限公司

Dates

Publication Date
20260508
Application Date
20250416

Claims (8)

  1. 1. The utility model provides a metal pipeline gas shield welds with welding protection device, includes first sealing member (1) and second sealing member (2) that are used for forming both ends shutoff in the metal pipeline of welding seam both sides, a serial communication port, be connected through intake pipe (3) and connecting piece (5) between first sealing member (1) and second sealing member (2), intake pipe (3) run through first sealing member (1), the one end and intake pipe (3) rotation of connecting piece (5) are connected, and the other end and second sealing member (2) fixed connection.
  2. 2. The welding protection device for gas shield welding of metal pipes according to claim 1, wherein the connecting piece (5) comprises a plurality of connecting rods which are arranged in sequence, and the adjacent connecting rods are connected in a rotating way.
  3. 3. The welding protection device for gas shield welding of metal pipes according to claim 2, wherein the first sealing member (1) comprises a movable blocking interlayer (102) and clamping plates (101) positioned at two sides of the movable blocking interlayer (102), and the second sealing member (2) has the same structure as the first sealing member (1).
  4. 4. A welding protector for gas shield welding of metal pipes as set forth in claim 3, wherein the diameter of the clamping plate (101) is smaller than the inner diameter of the metal pipe, and the outer contour diameter of the movable blocking interlayer (102) is larger than the inner diameter of the metal pipe.
  5. 5. The welding protection device for gas shield welding of metal pipes according to claim 4, wherein the movable blocking interlayer (102) is a sponge.
  6. 6. The welding protection device for gas shield welding of metal pipes according to claim 4, wherein the movable blocking interlayer (102) is a cooling water bag.
  7. 7. Welding protector for gas shield welding of metal pipes according to claim 1, characterized in that the first seal (1) is provided with a guiding wire (6).
  8. 8. The welding protection device for gas shield welding of metal pipelines according to claim 1, wherein a section of pipe wall of the air inlet pipe (3) between the first sealing element (1) and the second sealing element (2) is provided with a plurality of uniformly distributed air holes (4).

Description

Welding protection device for gas shield welding of metal pipeline Technical Field The utility model belongs to the field of welding auxiliary devices, and particularly relates to a welding protection device for gas shield welding of a metal pipeline. Background When metal pipe welding is performed, it is often necessary to provide gas protection conditions, i.e., gas shielded welding. The basic operation of gas shielded welding is that before the pipeline is aligned, water-soluble paper is stuck on the inner wall of the pipe orifice to be aligned in advance by using glue, and a gas pipe for conveying protective gas to the welding line is stuck together with the water-soluble paper. However, the water-soluble paper is not suitable for the type of pipeline which is not allowed to contact water during the welding treatment, and the basic means is to carry out the whole inflation protection on the metal pipe, so that the defects of high consumption of protective gas and high use cost exist. In order to reduce the consumption of protective gas in the gas shielded welding process, the prior proposal is that a blocking section is formed in a pipeline by using a baffle plate, then the pipeline is inflated, and the baffle plate is pulled out by using a rope chain after the welding is finished, thereby the gas shielded condition can be provided for a welding line area in a targeted way. Stainless steel pipeline welding protection device with publication number CN208825858U adopts the spring to carry out connection support between two sealing device, although effectively promoted the wholeness between two sealing device, the wholeness of being convenient for pulls, but the spring is easy impaired under the high temperature condition that the welding produced, and the supporting effect of spring is unoriented and unstable for two sealing device easily emptys when moving in the pipeline, leads to the shutoff effect not good, and shielding gas can consequently overflow, and then can weaken the gas protection effect. The utility model provides a welding protection device for gas-shielded welding of a metal pipeline. Disclosure of utility model The utility model aims to solve the problems and provide a welding protection device for gas shielded welding of metal pipelines. The utility model realizes the above purpose through the following technical scheme: The utility model provides a welding protection device for gas shield welding of a metal pipeline, which comprises a first sealing element and a second sealing element, wherein the first sealing element and the second sealing element are used for forming two-end sealing in the metal pipeline at two sides of a welding seam, the first sealing element and the second sealing element are connected through an air inlet pipe and a connecting element, the air inlet pipe penetrates through the first sealing element, one end of the connecting element is rotationally connected with the air inlet pipe, and the other end of the connecting element is fixedly connected with the second sealing element. As a further optimization scheme of the utility model, the connecting piece comprises a plurality of connecting rods which are sequentially arranged, and the adjacent connecting rods are rotationally connected. As a further optimization scheme of the utility model, the first sealing element comprises a movable blocking interlayer and clamping plates positioned at two sides of the movable blocking interlayer, and the structure of the second sealing element is the same as that of the first sealing element. As a further optimization scheme of the utility model, the diameter of the clamping plate is smaller than the inner diameter of the metal pipeline, and the outer contour diameter of the movable blocking interlayer is larger than the inner diameter of the metal pipeline. As a further optimization scheme of the utility model, the movable blocking interlayer is a sponge. As a further optimization scheme of the utility model, the movable blocking interlayer is a cooling water bag. As a further refinement of the utility model, a guide wire is provided on the first seal. As a further optimization scheme of the utility model, a section of pipe wall of the air inlet pipe between the first sealing element and the second sealing element is provided with a plurality of uniformly distributed air holes. The utility model has the beneficial effects that: 1. according to the welding protection device for the metal pipeline gas shield welding, provided by the utility model, the first sealing element and the second sealing element are adopted to form two-end plugs in the metal pipeline, so that the protection gas can be gathered around the welding seam and overflows from the welding seam, the effect of providing gas protection conditions in the welding process is realized, the connection between the first sealing element and the second sealing element is established by adopting the gas inlet pipe and the