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CN-224223428-U - Automatic grinding device for oil-gas pipeline anticorrosive coating

CN224223428UCN 224223428 UCN224223428 UCN 224223428UCN-224223428-U

Abstract

The utility model belongs to the technical field of oil and gas pipeline construction, and discloses an automatic polishing device for an oil and gas pipeline anticorrosive coating. The automatic polishing device for the oil and gas pipeline anticorrosive coating comprises an annular frame, a polishing mechanism and a travelling mechanism, wherein the annular frame is circumferentially coated on the outer wall of a pipeline to be polished, the polishing mechanism comprises a driving piece and a polishing flywheel, the driving piece is arranged on the annular frame and is connected with the polishing flywheel in a transmission manner, the polishing flywheel is arranged on the inner side of the annular frame and is in fit contact with the outer wall of the pipeline to be polished, and the travelling mechanism is arranged on the annular frame and is connected onto the outer wall of the pipeline to be polished in a sliding manner. Compared with the traditional manual mode, the method shortens the total construction period and greatly improves the construction efficiency. Moreover, the polishing device greatly reduces the physical consumption of the manual hand-held angle grinder, protects the physical health of workers, effectively improves the uniformity and consistency of polishing treatment in mechanized operation, and is beneficial to the quality assurance of subsequent procedures.

Inventors

  • YU ZHENQI
  • LI ZHIKUI
  • YAN HUIBIN

Assignees

  • 国家石油天然气管网集团有限公司

Dates

Publication Date
20260512
Application Date
20250609

Claims (10)

  1. 1. Automatic grinding device of oil gas pipeline anticorrosive coating, its characterized in that includes: the annular frame (1) is circumferentially coated on the outer wall of the pipeline (100) to be polished; The polishing mechanism comprises a driving piece and a polishing flywheel (21), wherein the driving piece is arranged on the annular frame (1) and is in transmission connection with the polishing flywheel (21), and the polishing flywheel (21) is arranged on the inner side of the annular frame (1) and is in fit contact with the outer wall of the pipeline (100) to be polished; The travelling mechanism (3) is arranged on the annular frame (1) and is connected to the outer wall of the pipeline (100) to be polished in a sliding manner.
  2. 2. The automatic polishing device for the oil and gas pipeline anti-corrosion layer according to claim 1, wherein the annular frame (1) comprises a first annular framework, a second annular framework and a connecting rib plate (13), the first annular framework and the second annular framework are arranged in parallel along the axis direction of the pipeline (100) to be polished, and the connecting rib plate (13) is fixedly connected between the first annular framework and the second annular framework.
  3. 3. The automatic polishing device for the oil and gas pipeline anticorrosive coating according to claim 2, wherein the first annular framework comprises a first arc-shaped support (111) and a second arc-shaped support (112), one end of the first arc-shaped support (111) is hinged to one end of the second arc-shaped support (112), and the other end of the first arc-shaped support (111) is detachably and fixedly connected to the other end of the second arc-shaped support (112); The second annular framework comprises a third arc-shaped support (121) and a fourth arc-shaped support (122), one end of the third arc-shaped support (121) is hinged to one end of the fourth arc-shaped support (122), and the other end of the third arc-shaped support (121) is detachably and fixedly connected to the other end of the fourth arc-shaped support (122); the first arc-shaped support (111) is fixedly connected to the third arc-shaped support (121) through the connecting rib plate (13), and the second arc-shaped support (112) is fixedly connected to the fourth arc-shaped support (122) through the connecting rib plate (13).
  4. 4. The automatic polishing device for the oil and gas pipeline anti-corrosion layer according to claim 2, wherein the annular frame (1) further comprises an isolation cover (14), and the isolation cover (14) is arranged opposite to the polishing flywheel (21) and is coated on the outer side of the annular frame (1).
  5. 5. The automatic polishing device for oil and gas pipeline corrosion prevention layers according to claim 4, wherein the isolation cover (14) comprises a first shield (141) and a second shield (142), the first shields (141) are provided with two, the two first shields (141) are opposite and cover the gaps of the first annular framework and the second annular framework respectively, the second shield (142) covers the gaps between the first annular framework and the second annular framework and is hinged to the first annular framework and the second annular framework, and the polishing flywheel (21) is located on the inner side of the second shields (142).
  6. 6. The automatic polishing device for oil and gas pipeline corrosion prevention layers according to claim 5, wherein an angle limiting piece (15) is further arranged on the annular frame (1), and the angle limiting piece (15) is used for limiting the rotation angle of the second shield (142).
  7. 7. The automatic polishing device for oil and gas pipeline corrosion protection layers according to claim 4, wherein the isolation cover (14) is provided with an observation hole.
  8. 8. The automatic polishing device for oil and gas pipeline anticorrosive coatings according to any one of claims 1 to 7, wherein a wire passing hole (16) is formed in the annular frame (1), the polishing mechanism further comprises a conductive wire harness (22), one end of the conductive wire harness (22) is connected to the driving piece, and the other end of the conductive wire harness is connected to the polishing flywheel (21) through the wire passing hole (16).
  9. 9. The automatic grinding device for oil and gas pipeline corrosion protection layers according to any one of claims 1-7, characterized in that the travelling mechanism (3) comprises a mounting piece (31) and a bullseye wheel (32), wherein the mounting piece (31) is arranged on the inner side of the annular frame (1) and is used for mounting the bullseye wheel (32).
  10. 10. The automatic polishing device for oil and gas pipeline corrosion protection layers according to claim 9, wherein a plurality of travelling mechanisms (3) are uniformly arranged on the annular frame (1) along the circumferential direction, and/or two groups of travelling mechanisms (3) are arranged on the annular frame (1) side by side along the axis direction of the pipeline (100) to be polished.

Description

Automatic grinding device for oil-gas pipeline anticorrosive coating Technical Field The utility model relates to the field of oil and gas pipeline construction, in particular to an automatic polishing device for an oil and gas pipeline anticorrosive coating. Background In the oil gas pipeline construction field, directional drilling technology is widely used for river and mountain crossing construction. When the directional drill passes through the pipeline and returns to the support, the 3PE anticorrosive coating can be scratched and even the parent metal is damaged due to adverse geological influence. In order to protect a 3PE anticorrosive coating of a crossing pipeline, the current anticorrosive structure of a pipeline of a crossing section of a directional drill in complex geology is a 3 PE+glass fiber reinforced plastic protective layer. According to technical Specification for anti-corrosion coating of crossing pipelines (SY/T7368-2017), before coating construction of a glass fiber reinforced plastic protective layer of crossing pipelines, the 3PE anti-corrosion coating needs to be polished, and the glass fiber reinforced plastic protective layer can be firmly adhered. Currently, the polishing treatment of the directional drilling penetrating through the 3PE anticorrosive coating of the pipeline is carried out on a construction site, so the polishing treatment is mainly carried out by relying on a manual hand-held angle grinder, and the mechanized operation is not realized. The manual polishing method is low in efficiency, workers need to keep a high-strength working state for a long time, labor intensity is high, and in addition, uniformity and consistency are difficult to ensure due to the fact that uncontrollable factors of manual operation are large, and quality risks are increased for subsequent glass fiber reinforced plastic protective layer coating procedures. Based on this, it is necessary to design an automatic polishing device for an oil and gas pipeline anticorrosive coating to solve the problems existing in the prior art. Disclosure of utility model The utility model aims to provide an automatic polishing device for an oil and gas pipeline anticorrosive coating, and aims to solve the technical problems of low efficiency, poor safety and poor polishing quality of the conventional polishing mode for the oil and gas pipeline 3PE anticorrosive coating. To achieve the purpose, the utility model adopts the following technical scheme: automatic grinding device of oil gas pipeline anticorrosive coating includes: The annular frame circumferentially wraps the outer wall of the pipeline to be polished; The polishing mechanism comprises a driving piece and a polishing flywheel, wherein the driving piece is arranged on the annular frame and is in transmission connection with the polishing flywheel, and the polishing flywheel is arranged on the inner side of the annular frame and is in fit contact with the outer wall of the pipeline to be polished; The travelling mechanism is arranged on the annular frame and is connected to the outer wall of the pipeline to be polished in a sliding manner. Preferably, the annular frame comprises a first annular frame, a second annular frame and connecting rib plates, wherein the first annular frame and the second annular frame are arranged in parallel along the axial direction of the pipeline to be polished, and the connecting rib plates are fixedly connected between the first annular frame and the second annular frame. Preferably, the first annular framework comprises a first arc-shaped bracket and a second arc-shaped bracket, one end of the first arc-shaped bracket is hinged to one end of the second arc-shaped bracket, and the other end of the first arc-shaped bracket is detachably and fixedly connected to the other end of the second arc-shaped bracket; The second annular framework comprises a third arc-shaped bracket and a fourth arc-shaped bracket, one end of the third arc-shaped bracket is hinged to one end of the fourth arc-shaped bracket, and the other end of the third arc-shaped bracket is detachably and fixedly connected to the other end of the fourth arc-shaped bracket; The first arc-shaped support is fixedly connected to the third arc-shaped support through the connecting rib plate, and the second arc-shaped support is fixedly connected to the fourth arc-shaped support through the connecting rib plate. Preferably, the annular frame further comprises an isolation cover, wherein the isolation cover is arranged opposite to the polishing flywheel and is coated on the outer side of the annular frame. Preferably, the isolation cover comprises a first protection cover and a second protection cover, the first protection cover is provided with two protection covers, the two protection covers are opposite and cover the notch of the first annular framework and the notch of the second annular framework respectively, the second protection cover covers the notch between