CN215465516U - Steel pipe inner wall processing apparatus - Google Patents
Steel pipe inner wall processing apparatus Download PDFInfo
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- CN215465516U CN215465516U CN202122035457.4U CN202122035457U CN215465516U CN 215465516 U CN215465516 U CN 215465516U CN 202122035457 U CN202122035457 U CN 202122035457U CN 215465516 U CN215465516 U CN 215465516U
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Abstract
The utility model discloses a steel pipe inner wall treatment device which comprises a spray gun, a pressure device, a coating bin, a shot bin, a moving platform, a pressure pipeline, a stripping and wire replacing device and a plurality of steel pipe brackets, wherein the spray gun is arranged on the inner wall of the steel pipe; the material-removing and line-changing device is positioned between adjacent steel pipe brackets, the spray gun is over against one of the steel pipe brackets, a plurality of rolling bearings are arranged on the inner side of each steel pipe bracket, an outlet of the pressure device is divided into three paths through a pressure pipeline, wherein the first path is communicated with an inlet of the coating bin through a first pressure reducing valve, the second path is communicated with the shot bin through a second pressure reducing valve, the third path is communicated with the spray gun through a purging valve, an outlet of the shot bin and an outlet of the coating bin are communicated with an inlet of the spray gun, and the spray gun, the coating bin and the shot bin are all positioned on the movable platform.
Description
Technical Field
The utility model belongs to the technical field of pipeline machining, and relates to a steel pipe inner wall treatment device.
Background
The inner wall of the steel pipe inevitably has the problems of oxidation, corrosion, blowing loss, abrasion and the like in the manufacturing and service processes, and in order to ensure the production safety, prolong the service life of the pipeline and reduce the economic cost, the pipe wall of the metal pipeline needs to be subjected to pre-strengthening treatment before the metal pipeline is in service, and the commonly adopted treatment modes are inner wall shot blasting and inner wall spraying treatment. The shot blasting uses shot particles to bombard the surface of a workpiece and implant residual compressive stress, and the cold processing technology for improving the fatigue strength of the steel pipe is widely used for improving the wear resistance, fatigue resistance, corrosion resistance and the like of the inner wall of the steel pipe; the inner wall spraying is to form a film or a coating isolated from the environment on the surface of a workpiece by using corrosion resistant paint, so that the wear resistance and the corrosion resistance of the inner wall of the steel pipe are improved, and the inner wall spraying can also be used as an important process for heating the thermal diffusion coating on the inner wall of the steel pipe by using a slurry method.
The blasting and spraying treatment of the inner wall can obviously improve the service performance of the steel pipe. The inner wall of the stainless steel pipe with the small pipe diameter specially used for the supercritical power station is subjected to shot blasting strengthening, after the surface microstructure of the inner wall of the stainless steel pipe is changed through shot blasting strengthening, various element (particularly Cr) enrichment layers are obviously changed in the using process, the oxidation resistance of the stainless steel pipe is greatly improved, the thickness of an oxidation layer generated is 0.07-1.7% of that without shot blasting strengthening, the oxidation layer does not peel off, and the good effect of shot blasting strengthening is achieved. The corrosion-resistant coating on the inner wall of the steel pipe can also obviously improve the corrosion resistance of the pipeline, for example, the water service or petrochemical field generally requires that the inner wall of the steel pipe is sprayed with epoxy resin coating for preventing and slowing down the corrosion of industrial water and soil to the steel pipe and prolonging the service life of the steel pipe.
At present, two independent devices are generally adopted for inner wall shot blasting and inner wall spraying of a long steel pipe, and for pipelines which need inner wall shot blasting and inner wall spraying of corrosion resistant paint, sequential or alternate production is needed, and pipes are manually conveyed to each device for processing, so that labor and energy are wasted and the efficiency is low; the working intensity is high, and the pollutant treatment cost is high. Therefore, the equipment can meet the requirements of independent processing of inner wall shot blasting and inner wall spraying and simultaneous processing of the inner wall shot blasting and the inner wall spraying, not only can reduce cost and improve efficiency, but also can improve the automation level of the processing technology of the inner wall of the steel pipe.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a steel pipe inner wall processing device which is used for simultaneous or independent construction of shot blasting and spraying of the inner wall of a steel pipe, and has high automation degree and low cost.
In order to achieve the aim, the device for treating the inner wall of the steel pipe comprises a spray gun, a pressure device, a coating bin, a shot bin, a moving platform, a pressure pipeline, a stripping and wire replacing device and a plurality of steel pipe brackets;
the material-removing and wire-changing device is positioned between adjacent steel pipe brackets, the spray gun is over against one of the steel pipe brackets, a plurality of rolling bearings are arranged on the inner side of each steel pipe bracket, an outlet of the pressure device is divided into three paths through a pressure pipeline, wherein the first path is communicated with an inlet of the coating bin through a first pressure reducing valve, the second path is communicated with the pill bin through a second pressure reducing valve, the third path is communicated with the spray gun through a purging valve, an outlet of the pill bin and an outlet of the coating bin are communicated with an inlet of the spray gun, and the spray gun, the coating bin and the pill bin are all positioned on the movable platform.
The device also comprises a residual material collecting device, and an inlet of the residual material collecting device is over against an outlet of the spray gun.
The device also comprises a dust removal device, wherein the top outlet of the excess material collection device is communicated with the inlet of the dust removal device, and the bottom outlet of the excess material collection device is communicated with the inlet of the pill bin.
The top outlet of the excess material collecting device is communicated with the inlet of the dust removing device through a dust removing pipeline.
The bottom outlet of the excess material collecting device is communicated with the inlet of the pill storage bin through an excess material return pipeline.
Still include the frame, dust collector and clout collection device all are fixed in on the frame.
The stripping and wire replacing device comprises a center block and a driving device for driving the center block to rotate, wherein a plurality of claws are arranged on the outer wall of the center block.
All the claws are evenly distributed along the circumferential direction.
The utility model has the following beneficial effects:
when the steel pipe inner wall processing device is in specific operation, the outlet of the pressure device is divided into three paths, wherein the first path is communicated with the inlet of the coating bin through a first pressure reducing valve, the second path is communicated with the shot bin through a second pressure reducing valve, the third path is communicated with the spray gun through a purge valve, simultaneous or independent construction of shot blasting and spraying of the inner wall of the steel pipe is realized by controlling the opening degrees of the first pressure reducing valve, the second pressure reducing valve and the purge valve, and simultaneously purging of the spray gun is realized, in addition, the spray gun is moved through a moving platform, so that the spray gun gradually withdraws from the steel pipe from the tail end of the steel pipe, so as to realize automatic shot blasting and spraying of the steel pipe, the automation degree is high, in addition, the utility model realizes that the steel pipe is conveyed on different steel pipe brackets by utilizing the material-removing and wire-changing device, not only can meet the independent processing requirements of the shot blasting and the spraying of the inner wall, but also can meet the simultaneous processing requirements of the shot blasting and the spraying of the inner wall, the defects that the inner wall shot blasting and the inner wall spraying of the existing long steel pipe are generally two independent devices are overcome, the labor intensity can be reduced, the cost and the efficiency are reduced, and the automation level of the steel pipe inner wall machining process can be improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of the middle steel pipe bracket 112 and the stripping and wire-changing device 113;
wherein, 10 is a steel pipe, 11 is a spray gun, 12 is a pressure device, 13 is a dust removal device, 14 is a coating bin, 15 is a pill bin, 16 is a mobile platform, 17 is a pressure pipeline, 18 is a residual material collection device, 19 is a dust removal pipeline, 110 is a residual material return pipeline, 111 is a frame, 112 is a steel pipe bracket, 1121 is a rolling bearing, and 113 is a material removal and wire changing device.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings:
referring to fig. 1 and 2, the steel pipe inner wall treatment device according to the present invention includes a spray gun 11, a pressure device 12, a dust removal device 13, a coating bin 14, a pellet bin 15, a mobile platform 16, a pressure pipeline 17, a remainder collection device 18, a dust removal pipeline 19, a remainder return pipeline 110, a frame 111, a material removal and wire replacement device 113, and a plurality of steel pipe brackets 112;
the material-removing and wire-changing device 113 is positioned between the adjacent steel pipe brackets 112, the spray gun 11 faces one of the steel pipe brackets 112, a plurality of rolling bearings 1121 are arranged on the inner side of the steel pipe bracket 112, the outlet of the pressure device 12 is communicated with a purging gas inlet of the spray gun 11, the inlet of the pellet bin 15 and the inlet of the coating bin 14, the outlet of the pellet bin 15 and the outlet of the coating bin 14 are communicated with the inlet of the spray gun 11, the coating bin 14 and the pellet bin 15 are all positioned on the movable platform 16, the opening of the excess material collecting device 18 faces the outlet of the spray gun 11, the outlet at the top of the excess material collecting device 18 is communicated with the inlet of the dust removing device 13 through a dust removing pipeline 19, the outlet at the bottom of the excess material collecting device 18 is communicated with the inlet of the pellet bin 15 through an excess material returning pipeline 110, and the dust removing device 13 and the excess material collecting device 18 are both fixed on the frame 111.
The material-removing and wire-changing device 113 comprises a center block and a driving device for driving the center block to rotate, wherein a plurality of hooks are arranged on the outer wall of the center block, the hooks are uniformly distributed along the circumferential direction, the driving device drives the center block to rotate, then the steel pipe 10 on the previous steel pipe bracket 112 is grabbed through the hooks, and the steel pipe 10 is moved and placed on the next steel pipe bracket 112.
In operation, the steel pipe 10 rotates on the steel pipe bracket 112 by the rolling bearing 1121, and is aligned with the spray gun 11 and the inlet of the surplus material collecting device 18 at the same time, so as to ensure the uniformity of the inner wall shot blasting and spraying processing of the steel pipe 10, thereby performing the inner wall shot blasting and spraying processing according to the process requirements.
Meanwhile, the flow of shot blasting and spraying is controlled through a pressure device 12, in order to meet the process requirements of shot blasting and spraying at the same time, the pressure device 12 provides air pressure not lower than 6MPa, and a plurality of groups of air flow partial pressure and pressure reducing valves are arranged to meet the pressure requirements of shot blasting and spraying, wherein a spray gun 11 comprises a shot blasting gun and a spray gun, the shot blasting gun is communicated with an outlet of a shot bin 15, the spray gun is communicated with an outlet of a coating bin 14, the partial pressure of the shot blasting gun is not lower than 3-5MPa, the partial pressure of the spray gun is not lower than 1-3MPa, and the pressure reducing valve is provided with an overpressure alarm and a safety valve; in the process of shot blasting and spraying, the moving platform 16 drives the spray gun 11, the shot bin 15 and the coating bin 14 to move.
When the steel pipe spraying device works, the spray gun 11 is moved through the moving platform 16, and when the spray gun 11 is inserted into the tail end of the steel pipe 10, the pressure device 12 is started to start shot blasting and spraying operation; the shot blasting and spraying operation process is completed in the process that the spray gun 11 retreats, so that the shot blasting and spraying processing surface is prevented from being scratched due to the movement of the spray gun 11; after the operation is finished, the gun head of the spray gun 11 withdraws from the steel pipe 10, the purging valve is opened, high-pressure air is introduced into the spray gun 11 through the pressure device 12, and the paint and pills remained in the gun body are purged, wherein the outlet of the pressure device 12 is divided into three paths through the pressure pipeline 17, the first path is communicated with the inlet of the paint bin 14 through the first pressure reducing valve, the second path is communicated with the pill bin 15 through the second pressure reducing valve, and the third path is communicated with the spray gun 11 through the purging valve.
During the operation of shot blasting and spraying, the tail end of the steel pipe 10 aligns with the excess material collecting device 18, so that the coating and the shot which are not attached to the inner wall can be sprayed into the excess material collecting device 18 through the inner cavity of the pipeline. Wherein, pellet recovery and coating recovery in the excess material collection device 18 are independently arranged, wherein, the bottom of the excess material collection device 18 is provided with a screw conveyor, and the collected pellets are conveyed to the pellet bin 15 through an excess material return pipeline 110.
In the processing process, the rotation and the centering of the steel pipe bracket 112, the movement of the movable platform 16, the opening and the closing of the spray gun 11, the pressurization and the partial pressure of the pressure device 12, the material removal and line change operation, the material return and the dust removal are all realized by a control system.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A steel pipe inner wall treatment device is characterized by comprising a spray gun (11), a pressure device (12), a coating bin (14), a pill bin (15), a movable platform (16), a pressure pipeline (17), a stripping and wire replacing device (113) and a plurality of steel pipe brackets (112);
the material-removing and line-changing device (113) is located between adjacent steel pipe brackets (112), the spray gun (11) is over against one of the steel pipe brackets (112), a plurality of rolling bearings (1121) are arranged on the inner side of each steel pipe bracket (112), an outlet of the pressure device (12) is divided into three paths through a pressure pipeline (17), wherein the first path is communicated with an inlet of the coating bin (14) through a first pressure reducing valve, the second path is communicated with the pill bin (15) through a second pressure reducing valve, the third path is communicated with the spray gun (11) through a purging valve, an outlet of the pill bin (15) and an outlet of the coating bin (14) are communicated with an inlet of the spray gun (11), and the spray gun (11), the coating bin (14) and the pill bin (15) are all located on the moving platform (16).
2. The steel pipe inner wall treatment apparatus according to claim 1, further comprising a surplus material collecting means (18), wherein an inlet of the surplus material collecting means (18) faces an outlet of the lance (11).
3. The steel pipe inner wall treatment device according to claim 1, further comprising a dust removal device (13), wherein a top outlet of the surplus material collection device (18) is communicated with an inlet of the dust removal device (13), and a bottom outlet of the surplus material collection device (18) is communicated with an inlet of the shot storage bin (15).
4. The steel pipe inner wall treatment device according to claim 3, wherein the top outlet of the excess material collecting device (18) is communicated with the inlet of the dust removing device (13) through a dust removing pipeline (19).
5. The steel pipe inner wall treatment device according to claim 3, wherein a bottom outlet of the surplus material collecting device (18) is communicated with an inlet of the pellet bin (15) through a surplus material return line (110).
6. The steel pipe inner wall treatment device according to claim 3, further comprising a frame (111), wherein the dust removal device (13) and the excess material collection device (18) are fixed on the frame (111).
7. The steel pipe inner wall processing device according to claim 1, wherein the stripping and wire changing device (113) comprises a central block and a driving device for driving the central block to rotate, wherein a plurality of hooks are arranged on the outer wall of the central block.
8. The steel pipe inner wall treatment apparatus according to claim 7, wherein the respective hooks are uniformly distributed in a circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122035457.4U CN215465516U (en) | 2021-08-26 | 2021-08-26 | Steel pipe inner wall processing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122035457.4U CN215465516U (en) | 2021-08-26 | 2021-08-26 | Steel pipe inner wall processing apparatus |
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| Publication Number | Publication Date |
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| CN215465516U true CN215465516U (en) | 2022-01-11 |
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| CN202122035457.4U Active CN215465516U (en) | 2021-08-26 | 2021-08-26 | Steel pipe inner wall processing apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113600391A (en) * | 2021-08-26 | 2021-11-05 | 华能国际电力股份有限公司 | Shot blasting-spraying device for inner wall of steel pipe |
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2021
- 2021-08-26 CN CN202122035457.4U patent/CN215465516U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113600391A (en) * | 2021-08-26 | 2021-11-05 | 华能国际电力股份有限公司 | Shot blasting-spraying device for inner wall of steel pipe |
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