CN215390257U - Floated long pipeline inner wall spray gun device - Google Patents
Floated long pipeline inner wall spray gun device Download PDFInfo
- Publication number
- CN215390257U CN215390257U CN202122003618.1U CN202122003618U CN215390257U CN 215390257 U CN215390257 U CN 215390257U CN 202122003618 U CN202122003618 U CN 202122003618U CN 215390257 U CN215390257 U CN 215390257U
- Authority
- CN
- China
- Prior art keywords
- spray gun
- force application
- coil
- pipeline
- application coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 241001640558 Cotoneaster horizontalis Species 0.000 title claims abstract description 12
- 239000007921 spray Substances 0.000 claims abstract description 102
- 238000004804 winding Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 abstract description 27
- 238000000576 coating method Methods 0.000 abstract description 11
- 239000011248 coating agent Substances 0.000 abstract description 9
- 239000000725 suspension Substances 0.000 abstract description 9
- 230000007547 defect Effects 0.000 abstract description 5
- 238000006748 scratching Methods 0.000 abstract description 3
- 230000002393 scratching effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 229910018125 Al-Si Inorganic materials 0.000 description 2
- 229910018520 Al—Si Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007709 nanocrystallization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Landscapes
- Spray Control Apparatus (AREA)
Abstract
The utility model discloses a suspended long pipeline inner wall spray gun device which comprises a force application coil, a spray gun bracket and a spray gun head, wherein the force application coil is arranged on the force application coil; the spray gun comprises a spray gun support, a force coil, a conveying pipeline and a force application coil, wherein the spray gun head is arranged at the front end of the spray gun support, the force application coil is fixed at one end, close to the spray gun head, inside the spray gun support, the conveying pipeline is arranged in the spray gun support and connected with the spray gun head, and the force application coil is arranged below the force application coil. The spray gun can overcome the defect that the gun head of the existing long-rod spray gun droops in a suspension mode, ensures that the spray gun is completely coincided with the horizontal central axis of the pipeline, and the gun head of the spray gun and the inner surface of the pipeline are sprayed in a non-contact mode, so that the problems of uneven spraying, potential safety hazards and the like caused by scratching and wearing the gun head and the inner surface of the pipeline are solved. The equipment is simple and easy to learn, the obtained coating has excellent quality and wide application range, and the inner surface of the pipeline with small caliber and large length can be sprayed.
Description
Technical Field
The utility model belongs to the technical field of surface spraying, and relates to a suspension type long pipeline inner wall spray gun device.
Background
In the actual service process of the pipeline, the problems of oxidation, corrosion, abrasion and the like of the inner surface of the pipeline caused by various media flowing through the pipeline are frequent, and particularly in the high-temperature and high-pressure industry, the problems are more prominent, the service life and the operation safety of the pipe are greatly influenced, and the rapid development of enterprises and even the industry is restricted. Therefore, protection of the inner surface of the pipe is a primary option to address these problems.
With the continuous improvement and upgrade of protection technology, aiming at different protection requirements of the inner surface of the pipeline, various protection means such as inner wall shot blasting, inner wall coating, inner surface nanocrystallization, inner surface passivation and the like have been developed at home and abroad at present, so that remarkable effects are achieved, and the spraying modes of the pipeline are greatly different for pipelines with different calibers and lengths; the pipeline for the high-temperature section of the boiler of the coal-fired thermal power plant is characterized by small caliber (about 25-45 mm of inner diameter) and large length (about 12-15 m). Generally, the spraying operation is usually performed by using a long rod spray gun to spray the inner surface of the pipeline with larger length. At present, the minimum caliber of the existing industrialized long-rod spray gun with the length of more than 10m is about 24mm, the head part of the spray gun can droop to different degrees under the influence of gravity, the minimum droop is about 10mm, and the droop increases along with the lengthening of the length of the spray gun; therefore, when the inner surface of the pipeline is sprayed, the pipeline with larger inner diameter (larger than 100mm) can ignore the spraying error caused by the drooping amount of the gun head of the spray gun, and basically meets the use requirement; for pipelines with smaller caliber and larger length, on one hand, the spray gun inevitably has the defects of scraping, abrasion and the like on the inner surface of the pipeline due to the larger drooping amount of the gun head when entering and exiting the interior of the pipeline, so that the spraying quality is poor, the operation cost is high, and potential safety hazards are left on the normal service of the pipeline; on the other hand, the caliber of the existing spray gun is large, the use requirement of a small-caliber boiler tube cannot be met, the calibers of the spray gun head and the gun rod need to be further reduced, and the reduced calibers can cause larger drooping amount of the gun head.
Therefore, the development of a long rod spray gun suitable for spraying the inner surfaces of small-diameter and large-length pipelines is urgently needed so as to adapt to the inner surface spraying operation of pipelines with different specifications.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the existing long-rod spray gun in the inner surface spraying technology of small-diameter and large-length pipelines, and provides a suspension type long-pipeline inner wall spray gun device which can meet the requirement of uniform spraying of inner surface coatings of pipelines with various specifications and obtain high-quality sprayed coatings.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a suspended long pipeline inner wall spray gun device comprises a force application coil, a spray gun bracket and a spray gun head; the spray gun comprises a spray gun support, a force coil, a conveying pipeline and a force application coil, wherein the spray gun head is arranged at the front end of the spray gun support, the force application coil is fixed at one end, close to the spray gun head, inside the spray gun support, the conveying pipeline is arranged in the spray gun support and connected with the spray gun head, and the force application coil is arranged below the force application coil.
The utility model has the further improvement that the device also comprises a track, wherein the track is provided with a power trolley, and the force application coil is fixed on the power trolley.
The utility model is further improved in that the power trolley is provided with a lifting motor, and the force application coil is fixed on the lifting motor.
The utility model is further improved in that the force application coil is positioned right below the force receiving coil.
The utility model is further improved in that the size of the force application coil is 1.2 times larger than that of the force application coil.
The utility model is further improved in that the winding direction of the force application coil is opposite to the winding and unwinding direction of the force receiving coil, and the current of the coil is continuously adjustable.
A further development of the utility model is that the lance holder is cylindrical.
The utility model is further improved in that the caliber of the lance head is not larger than the outer diameter of the lance support.
A use method of a suspended long pipeline inner wall spray gun is based on the suspended long pipeline inner wall spray gun device and comprises the following steps:
1) the force-bearing coil drives the spray gun to gradually suspend under the action of the electromagnetic force of the force-applying coil, and the current of the force-bearing coil is kept stable when the gun head of the spray gun and the spray gun bracket reach the same horizontal line;
2) horizontally sleeving a pipeline to be sprayed into a spray gun from one end of a spray gun head, and keeping the spray gun head and a horizontal central axis of the pipeline to be sprayed to be superposed;
3) the coating enters a spray gun head through a material conveying pipeline under high pressure and drives the spray gun head to rotate at high speed, and the coating is sprayed on the inner surface of the pipeline;
4) and withdrawing the pipeline to be sprayed at a constant speed along the horizontal direction to finish the spraying of the inner surface of the pipeline to be sprayed.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, by arranging the force application coil and the force application coil, the spray gun can overcome the defect that the head of the existing long-rod spray gun is drooped in a suspension mode, the complete coincidence of the spray gun and the horizontal central axis of the pipeline is ensured, the head of the spray gun and the inner surface of the pipeline are sprayed in a non-contact mode, and the problems of uneven spraying, potential safety hazards and the like caused by scratching and wearing of the head and the inner surface of the pipeline are avoided. The utility model is suitable for spraying the inner wall of the pipeline with small caliber and large length.
When the spraying device is used for spraying, the spraying operation of the inner surfaces of pipelines with different sizes can be met by adjusting the vertical distance and the horizontal displacement of the force application coil and the force receiving coil, and the application range is wide; secondly, the horizontal state of the spray gun can be realized by continuously and accurately adjusting the current of the stress coil, and the control is simple and easy to learn; and finally, the thickness of the spraying layer on the inner surface of the pipeline can be accurately controlled through the pipeline withdrawal speed, and the quality of the spraying layer is excellent.
Drawings
FIG. 1 is a schematic structural diagram of a suspension type long pipe inner wall spray gun device according to the present invention;
FIG. 2 is a schematic view of the suspension principle of the spray gun of the present invention;
FIG. 3 is a microscopic profile of a cross section of a spray coating of a pipe;
in the figure, 1 is a pipeline, 2 is a force application coil, 3 is a stress coil, 4 is a spray gun head, 5 is a material conveying pipeline, 6 is a force application power supply, 7 is a stress power supply, 8 is a spray gun bracket, 9 is a lifting motor, 10 is a discharge hole, 11 is a power trolley, and 12 is a track.
Detailed Description
The present invention is described in further detail below with reference to the attached drawings.
Referring to fig. 1 and 2, the suspension type long pipeline inner wall spray gun device of the utility model comprises a force application coil 2, a force application coil 3, a spray gun bracket 8 and a spray gun head 4; the spray gun head 4 is installed at the front end of a spray gun support 8, the force application coil 2 is fixed on a power trolley 11 with a lifting motor 9, the force application coil 3 is fixed at one end, close to the spray gun head 4, inside the spray gun support 8, and a material conveying pipeline 5 connected with the spray gun head 4 is arranged in the spray gun support 8.
Preferably, the force application coil 2 is positioned right below the force application coil 3, and meanwhile, according to the requirements of pipelines with different lengths, a plurality of groups of force application coils 2 and force application coils 3 are arranged at different positions in the spray gun bracket 8; the size of the force application coil 2 is 1.2 times larger than that of the force receiving coil 3, and the force application coil 2 can move and adjust in the horizontal and vertical directions through a lifting motor 9 and a power trolley 11 on a track 12; the winding direction of the force application coil 2 is opposite to the winding and unwinding direction of the force application coil 3, and the coil current is continuously adjustable; only one path of material conveying pipeline 5 is arranged in the spray gun support 8 and is directly connected with the spray gun head 4; the spray gun support is cylindrical, and the caliber of the spray gun head 4 is not more than the outer diameter of the spray gun support 8; the spray gun device is suitable for pipelines with the specification that L is more than or equal to 1m and less than or equal to 50m, phi is more than or equal to 20mm and less than or equal to 50mm, wherein L is the length of a pipe, and phi is the inner diameter of the pipe.
The use method of the suspension type long pipeline inner wall spray gun comprises the following steps:
1) according to the wall thickness and the inner diameter of the pipeline to be sprayed, the vertical distance between the force application coil 2 and the force application coil 3 is adjusted, and meanwhile, the force application power supply 6 is connected.
2) A stress power supply 7 of the stress coil 3 is turned on, the current of the stress coil 3 is gradually increased, the stress coil 3 drives the spray gun to gradually suspend under the action of electromagnetic force, and the current of the stress coil 3 is kept stable when the gun head 4 of the spray gun and the spray gun bracket 8 reach the same horizontal line;
3) horizontally sleeving a spray gun into the pipeline 1 to be sprayed from one end of a spray gun head 4, and keeping the spray gun head 4 and a horizontal central axis of the pipeline 1 to be superposed;
4) opening a valve of a material conveying pipeline 5, enabling the coating to enter a spray gun head 4 through the material conveying pipeline 5 under high pressure and driving the spray gun head 4 to rotate at high speed, and spraying the coating on the inner surface of the pipeline after materialization at a discharge port 10;
5) the pipeline 1 is withdrawn at a constant speed along the horizontal direction, so that the spraying uniformity of the inner surface of the pipeline is ensured.
6) When the pipeline 1 is completely withdrawn, closing the valve of the material conveying pipeline 5 to finish the spraying process of the inner surface of the pipeline 1; and simultaneously, the current of the stress power supply 7 is gradually reduced to zero, the force application power supply 6 is closed, and the spray gun is cleaned.
Example 1
The Super304H stainless steel boiler tube with an inner diameter of 24.5mm and a length of 12m is taken as an example, and the inner surface of the boiler tube is sprayed; the selected coating is Al-Si metal slurry, and the solid-to-liquid ratio is 5 g: 3 mL. Wherein, the drooping amount of the lance head of the 12m long-rod lance is 15mm, and the caliber of the lance is 20 mm.
According to the known data, the proper vertical distance between the force application coil and the force receiving coil is adjusted to be 12 mm; after the current of the force application coil is switched on, the current of the force application coil is slowly increased through a current control cabinet, and the spray gun is detected to be suspended to a horizontal position through a level meter; after the pipeline is sleeved in the spray gun, the distance between the inner surface of the pipeline and the periphery of the spray gun support is about 2mm, the spraying pressure of the Al-Si metal slurry is about 0.7Mpa, the rotating speed of the head of the spray gun is about 20000r/s, the exit speed of the pipeline is about 0.2m/s after spraying is started, and the spraying speed of a 12m long pipe is about 1 min/piece. The cross-sectional morphology of the obtained inner surface coating is shown in FIG. 3, and the quality of the spraying layer is excellent; the thickness of the sprayed layer was measured to be about 45 μm.
The spray gun can overcome the defect that the gun head of the existing long-rod spray gun droops in a suspension mode, ensures that the spray gun is completely coincided with the horizontal central axis of the pipeline, and the gun head of the spray gun and the inner surface of the pipeline are sprayed in a non-contact mode, so that the problems of uneven spraying, potential safety hazards and the like caused by scratching and wearing the gun head and the inner surface of the pipeline are solved. The equipment is simple and easy to learn, the obtained coating has excellent quality and wide application range, and the inner surface of the pipeline with small caliber and large length can be sprayed.
Claims (8)
1. A suspended long pipeline inner wall spray gun device is characterized by comprising a force application coil (2), a force application coil (3), a spray gun bracket (8) and a spray gun head (4); the spray gun comprises a spray gun support (8), a force-applying coil (3), a spray gun head (4), a force-applying coil (2), a conveying pipeline (5) and a force-applying coil (2), wherein the spray gun head (4) is installed at the front end of the spray gun support (8), the force-applying coil (3) is fixed at one end, close to the spray gun head (4), inside the spray gun support (8), the conveying pipeline (5) is arranged in the spray gun support (8) and connected with the spray gun head (4), and the force-applying coil (2) is arranged below the force-applying coil (3).
2. The suspended long-pipeline inner-wall spray gun device is characterized by further comprising a rail (12), wherein a power trolley (11) is arranged on the rail (12), and the force application coil (2) is fixed on the power trolley (11).
3. The suspended long-pipeline inner-wall spray gun device is characterized in that a lifting motor (9) is arranged on the power trolley (11), and the force application coil (2) is fixed on the lifting motor (9).
4. The suspended long-pipe inner-wall spray gun device according to claim 1, wherein the force application coil (2) is located right below the force application coil (3).
5. The suspended long-pipe inner-wall spray gun device according to claim 1, wherein the size of the force application coil (2) is greater than 1.2 times that of the force application coil (3).
6. The suspended long-pipeline inner-wall spray gun device as claimed in claim 1, wherein the winding direction of the force application coil (2) is opposite to the winding direction of the force application coil (3) and the coil current is continuously adjustable.
7. The suspended long-pipe inner-wall lance device according to claim 1, wherein the lance holder (8) is cylindrical.
8. The suspended long-pipeline inner-wall spray gun device according to claim 1, wherein the caliber of the spray gun head (4) is not larger than the outer diameter of the spray gun bracket (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122003618.1U CN215390257U (en) | 2021-08-24 | 2021-08-24 | Floated long pipeline inner wall spray gun device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122003618.1U CN215390257U (en) | 2021-08-24 | 2021-08-24 | Floated long pipeline inner wall spray gun device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215390257U true CN215390257U (en) | 2022-01-04 |
Family
ID=79664159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122003618.1U Active CN215390257U (en) | 2021-08-24 | 2021-08-24 | Floated long pipeline inner wall spray gun device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215390257U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113680570A (en) * | 2021-08-24 | 2021-11-23 | 华能国际电力股份有限公司 | Suspended long pipeline inner wall spray gun device and using method |
-
2021
- 2021-08-24 CN CN202122003618.1U patent/CN215390257U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113680570A (en) * | 2021-08-24 | 2021-11-23 | 华能国际电力股份有限公司 | Suspended long pipeline inner wall spray gun device and using method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215390257U (en) | Floated long pipeline inner wall spray gun device | |
| CN201783875U (en) | Sandblasting derusting device for inner walls of pipes | |
| CN113680570A (en) | Suspended long pipeline inner wall spray gun device and using method | |
| CN104451524B (en) | A kind of NiCrBSi coating production for minor diameter ball | |
| CN110124957B (en) | Device and method for high-frequency induction cladding of inner wall of pipeline | |
| CN106216144A (en) | Spraying operation line in semi-automatic pipeline | |
| CN105665204A (en) | Synchronous plastic coating production device for inner wall and outer wall of steel pipe | |
| CN203542383U (en) | Sand-blasting device for surface treatment of inner wall of pipeline | |
| CN108642491A (en) | A kind of medium-small diameter inner wall of the pipe laser cladding apparatus | |
| CN102284398A (en) | Caliber self-adaption inwall spraying equipment aiming at large-caliber steel tube | |
| CN102814248A (en) | Nozzle for axial siphon powder delivering type cold spray | |
| CN104801437A (en) | Inner wall spraying device of round pipeline | |
| CN102489517A (en) | On-line control method for spraying graphite lubricant to mandrel | |
| CN202199468U (en) | Pipe-diameter adaptive inner wall spray equipment for heavy caliber steel pipe | |
| CN113441959A (en) | Full-automatic spiral steel pipe anticorrosion integrated production line and production process | |
| CN106925476B (en) | A kind of pipeline inside and outside coating all-in-one machine | |
| CN205341130U (en) | Synchronous plastic -coated production facility of steel pipe inside and outside wall | |
| CN110743738A (en) | Inner wall coating steel pipe leak source detects prosthetic devices | |
| CN201179494Y (en) | Internal coating spraying apparatus for large-diameter gas transmission steel tube | |
| CN213590896U (en) | Coating spraying device for inner wall of small-caliber pipe | |
| CN206028012U (en) | Spraying operation line in semi -automatic pipeline | |
| CN211070587U (en) | Pneumatic motor type flexible spray gun for liquid coating | |
| CN201361597Y (en) | Integrated heating, powder-spraying and film-forming device for internal wall of steel tube | |
| CN215655948U (en) | Centrifugal spraying equipment for reinforcing small-diameter pipeline | |
| CN206527421U (en) | A kind of three opening tube head inwall deposition equipment with position detecting function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |