CN105234052A - Coating device for large-diameter bend inner coating - Google Patents
Coating device for large-diameter bend inner coating Download PDFInfo
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- CN105234052A CN105234052A CN201510714709.2A CN201510714709A CN105234052A CN 105234052 A CN105234052 A CN 105234052A CN 201510714709 A CN201510714709 A CN 201510714709A CN 105234052 A CN105234052 A CN 105234052A
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- bend pipe
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Abstract
The invention discloses a coating device for a large-diameter bend inner coating, and relates to the technical field of pipeline inner surface spraying devices. The coating device comprises a travelling trolley, a driving mechanism of the travelling trolley, a coating adsorbing bin, a dust removing device and a spraying device. A rotary spray gun of the spraying device is arranged on the travelling trolley. The travelling trolley comprises a trolley body and at least four rollers. Overturning-resistant wheels are evenly distributed on the circumferences of the rollers. The axes of the overturning-resistant wheels are all perpendicular to the axes of the rollers. One end of a to-be-processed bend is connected with the coating adsorbing bin in a sealed manner. The coating adsorbing bin is connected with the dust removing device. The overturning-resistant wheels on the rollers can automatically adjust the balance of the travelling trolley when the travelling trolley travels in the bend, and the inner wall of the bend is coated with the coating through the spraying device in the running process. The coating device has the beneficial effects of being simple in structure and convenient to operate, and the work quality and the work efficiency can be improved.
Description
Technical field
The present invention relates to inner surface of pipeline spray equipment technical field, particularly relate to a kind of big diameter elbow undercoating coating equipment.
Background technology
In the pipe-line construction of heavy caliber long distance gas pipeline engineering, in order to reduce transporting resistance, raising air input efficiency, the increase displacement of natural gas, heavy caliber natural gas line all adopts the internally coated technology of drag reduction.Ripe day by day in drag reduction undercoating technology China's natural gas pipe-line construction process, but be only limitted to the drag reduction coating of straight-tube portion, in bend pipe drag reduction, coating is also in the situation of manual sandblasting and manual application mostly.
Drag reduction undercoating is produced and can be completed by means of only the derusting by sandblasting of pipeline and spraying application, and internally coated performance depends on the technique of coating property, sandblasting and spraying.But in the drag reduction of bend pipe coating produce with straight tube in is coated with production and there is notable difference, hot-bending bends can not rotate vertically, causes cantilevered ball blast feeding that in straight tube, coating uses and the feeding of cantilevered high-pressure airless spraying gun to realize, adds the difficulty of construction.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of big diameter elbow undercoating coating equipment, can reduce labor intensity of operating staff, improves the internally coated speed of application of bend pipe and construction quality.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of big diameter elbow drag reduction undercoating coating equipment, it is characterized in that: comprise walking dolly and driving mechanism thereof, paint-absorbable storehouse, dust arrester and spray equipment, the rotation spray lance of described spray equipment is arranged on walking dolly, described walking dolly comprises car body and roller, described roller is at least 4, described roller is circumferentially laid with to resist overturns wheel, described anti-axis of overturning wheel all with the axes normal of roller, walking dolly can be made to radially slide along elbow internal wall, pending bend pipe one end seals with paint-absorbable storehouse and is connected, described paint-absorbable storehouse is connected with dust arrester.
Preferably, also comprise sand blasting unit, the rotation spray lance of described sand blasting unit is arranged on walking dolly, and pending bend pipe one end seals with abrasive reclaiming storehouse and is connected, and described abrasive reclaiming storehouse is connected with dust arrester.
Preferably, pending bend pipe is arranged on roller-way, and described roller-way can be moved by driver part between sandblasting station and spray station.
Preferably, described roller is 4, and the anti-wheel of overturning on each roller is 8.
Preferably, the pending bend pipe other end is provided with technique pipeline section, and described technique pipeline section and pending bend pipe are with the same caliber of wall thickness, and described walking dolly can be placed in technique pipeline section, and described technique pipeline section is connected with pending trap seal.
Preferably, described technique pipeline section tail end is provided with capping.
Preferably, the diameter D of described pending bend pipe is 406 ~ 1422mm, and radius bend is 5D ~ 6D.
Preferably, described spray equipment also comprises the conveying sebific duct and coating storage tank that are connected with rotation spray lance, the rotation spray lance of described spray equipment is rotating cup spray gun, rotating cup spray gun is driven by motor and is arranged on walking dolly, the driving mechanism of described walking dolly comprises motor and drive disk assembly, described coating storage tank is communicated with paint pump, and the motor of described rotating cup spray gun and walking dolly is all connected with the second switch board of pending bend pipe outside with paint pump; The motor of described walking dolly carrys out governing speed by frequency converter.
Preferably, described sand blasting unit also comprises the sediment transport sebific duct be connected with rotation spray lance, the gas tank be connected with sediment transport sebific duct and sand tank, described abrasive ejection gun is driven by air motor and is arranged on walking dolly, the driving mechanism of described walking dolly comprises motor and drive disk assembly, the outlet of described gas tank and sand tank is respectively equipped with air valve and sand valve, and motor, the air valve of described air motor, walking dolly are all connected with the first switch board of pending bend pipe outside with sand valve; The rotation spray lance of described sand blasting unit is Y type spray gun, and the motor of described walking dolly carrys out governing speed by frequency converter.
Preferably, described paint pump is two component charging pumps.
The beneficial effect adopting technique scheme to produce is: utilize the anti-wheel of overturning on roller automatically can regulate the Equilibrium of walking dolly in the inner walking process of bend pipe, ensure the even running of walking dolly, pending bend pipe to be placed on roller-way and to move to sandblasting station or spray station, in the running of walking dolly, utilizing sand blasting unit or spray equipment to realize derusting by sandblasting or the coating spraying of elbow internal wall.The present invention has simple, the easy to operate advantage of structure, utilize the present invention produce thickness >=80 μm of coating in bend pipe drag reduction, film formation surface roughness≤7.6 μm, detected by NACE-SP0188/NACE-TM0384 wet sponge low pressure leak source, performance can meet the technical requirement of APIRP5L completely, can be used as natural gas high pressure conveying drag reduction undercoating, solve the problem that manual operation labour intensity is large, improve work quality and operating efficiency.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the present invention under sandblasting state;
Fig. 2 is the schematic diagram of the present invention under spraying state;
Fig. 3 is the roller schematic diagram of walking dolly in Fig. 1 and Fig. 2;
In figure: 1-walking dolly, 2-roller, 3-is anti-overturns wheel, the pending bend pipe of 4-, 5-abrasive reclaiming storehouse, 6-dust arrester, 7-technique pipeline section, 8-sediment transport sebific duct, 9-gas tank, 10-sand tank, 11-first switch board, 12-paint-absorbable storehouse, 13-front-end process pipe, 14-conveying sebific duct, 15-coating storage tank, 16-paint pump, 17-second switch board, 18-roller-way, 19-rotation spray lance, 20-cable.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
As Fig. 1, 2, a kind of big diameter elbow undercoating coating equipment shown in 3, comprise walking dolly 1 and driving mechanism thereof, dust arrester 6, abrasive reclaiming storehouse 5, paint-absorbable storehouse 12, sand blasting unit and spray equipment, the rotation spray lance 19 of described sand blasting unit and spray equipment can be separately positioned on walking dolly 1, described walking dolly 1 comprises car body and roller 2, described roller 2 is 4, each roller 2 is circumferentially laid with 8 and anti-overturns wheel 3, described anti-axis of overturning wheel 3 all with the axes normal of roller 2, walking dolly 1 can be made to radially slide along bend pipe 4 inwall, pending bend pipe 4 one end can seal with abrasive reclaiming storehouse 5 and paint-absorbable storehouse 12 respectively and be connected, and described abrasive reclaiming storehouse 5 and paint-absorbable storehouse 12 can be connected with dust arrester 6 respectively.
The diameter D of pending bend pipe is 406 ~ 1422mm, and radius bend is 5D ~ 6D.Take diameter as the pending bend pipe 4 of 1422mm be example, radius bend R is 7110mm.
Pending bend pipe 4 is arranged on roller-way 18, utilizes the driver part of roller-way 18 can move between sandblasting station and spray station; Pending bend pipe 4 other end is provided with technique pipeline section 7, described technique pipeline section 7 and pending bend pipe 4 are with the same caliber of wall thickness, described walking dolly 1 can winch in technique pipeline section 7 in advance, described technique pipeline section 7 is tightly connected with urethane film with pending bend pipe 4, be provided with front-end process pipe 13 between described paint-absorbable storehouse 12 and pending bend pipe 4, described front-end process pipe 13 is tightly connected respectively with paint-absorbable storehouse 12 and pending bend pipe 4; And be provided with transparent cover at technique pipeline section 7 other end and carry out shutoff, dust can be avoided to run and to emit space outerpace, keep workshop clean environment, ensure that operating personnel are healthy.
The rotation spray lance 19 of described sand blasting unit selects Y type spray gun, the sediment transport sebific duct 8 be connected with Y type spray gun runs through pending bend pipe 4, it is outside that the gas tank 9 be connected with sediment transport sebific duct 7 and sand tank 10 are arranged on pending bend pipe 4, described Y type spray gun is driven by air motor and is arranged on walking dolly 1, described walking dolly 1 comprises motor and drive disk assembly, the outlet of described gas tank 9 and sand tank 10 is respectively equipped with air valve and sand valve, and motor, the air valve of described air motor, walking dolly 1 are all connected with the first switch board 11 of pending bend pipe 4 outside with sand valve; The motor of described walking dolly 1 carrys out governing speed by frequency converter.Abrasive material in sand tank 10 can be delivered to Y type spray gun by startup air valve and sand valve, and Y type spray gun High Rotation Speed under the effect of air motor carries out sandblasting to bend pipe 4 inwall.
The rotation spray lance of described spray equipment selects rotating cup spray gun, the conveying sebific duct 14 be connected with rotating cup spray gun runs through pending bend pipe 4, and be communicated with coating storage tank 15, rotating cup spray gun is driven by motor and is arranged on walking dolly 1, described walking dolly 1 comprises motor and drive disk assembly, described coating storage tank 15 is communicated with paint pump 16, and motor, the paint pump 16 of described walking dolly 1 and rotating cup spray gun are all connected with the second switch board 17 of pending bend pipe 4 outside; The motor of described walking dolly 1 carrys out governing speed by frequency converter.Because in bend pipe 4, drag reduction construction rhythm is slower, the life-span used in combination of coating is shorter, and one-component pump should not be adopted to carry out feed, and described paint pump 16 selects two component charging pump supply coating, proportion speed can be made, easy to clean, reduce coating loss, and coating flow is stepless adjustable, coordinate the astern speed of walking dolly 1 accurately can control coating thickness, utilize the High Rotation Speed of rotating cup spray gun, coating atomizing effect is splendid simultaneously, reaches the object to bend pipe 4 inwall even application.Wherein two component charging pump selects the dual-component coating pump that Graco company of the U.S. produces.
The speed of walking dolly 1 is controlled respectively by the first switch board 11 and the second switch board 17, the speed of travel of walking dolly 1 is made to be 0 ~ 5m/min, use the speed of Frequency Converter Control walking dolly 1, the speed that realizes is even stepless adjustable, sandblasting speed and the equal adjustable of spraying rate simultaneously, realizes the accurate control of the spraying overlap joint number of plies.
In work progress, bend pipe drag reduction undercoating coating processes step comprises: pending bend pipe is added, and roller-way is fed to sandblasting station, moved to by walking dolly in technique pipeline section, technique pipeline section 7 is docked with bend pipe, and walking dolly enters to initiating terminal, walking dolly retreats sandblasting, purges; Overhead traveling crane moves bend pipe to spray station, and roller-way is fed to spray station, is moved to by walking dolly in technique pipeline section, and technique pipeline section is docked with bend pipe, and walking dolly enters to initiating terminal, and walking dolly retreats spraying; Product inspection.
As shown in Figure 1, in bend pipe, rust cleaning sandblasting operation comprises following steps:
1, overhead traveling crane is first used to be placed on roller-way 18 by pending bend pipe 4 qualified for initial survey;
2, operating roller-way 18 probes in abrasive reclaiming storehouse 5 by pending bend pipe 4 one end completely;
3, walking dolly 1 to be moved to pending bend pipe 4 with wall thickness with in the technique pipeline section 7 of caliber, use overhead traveling crane to be alignd with pending bend pipe 4 other end by technique pipeline section 7, use urethane film to seal butt end, and with transparent cover plugging technology pipeline section 7 port;
4, walking dolly 1 is advanced to one end, abrasive reclaiming storehouse 5 of bend pipe 4 by technique pipeline section 7; Open the dedusting fan of dust arrester 6, separator, elevator and auger conveyor;
5, open gas tank 9 and export air valve, start air motor, Y type spray gun High Rotation Speed under the effect of air motor, the sand valve opening sand tank 10 starts sediment transport, and abrasive material is by sediment transport sebific duct 8 to spray gun 7, and abrasive material is ejection at a high speed, and walking dolly 1 retreats, and sandblasting starts;
6, walking dolly 1 retreats to technique pipeline section 7 position, and close Fales grain valve, air valve, hangs technique pipeline section 7, operation roller-way 18, and bend pipe 4 exits abrasive reclaiming storehouse 5; Sandblasting terminates.
As shown in Figure 2, in bend pipe, spraying process comprises following steps:
1, the pending bend pipe 4 first using overhead traveling crane pretreatment to be up to the standards is placed on roller-way 18;
2, operate roller-way 18 pending bend pipe 4 one end is probeed in paint-absorbable storehouse 12 completely.Preset one section of front-end process pipe 13 with the equal caliber wall thickness of pending bend pipe 4 before paint-absorbable storehouse 12; .
3, walking dolly 1 to be moved to pending bend pipe with wall thickness with in the backend process pipe 7 of caliber, use overhead traveling crane to be alignd with pending bend pipe 4 other end by technique pipeline section 7, use urethane film to seal butt end, and with transparent cover plugging technology pipeline section 7 port;
4, walking dolly 1 advances to front-end process pipe 13 position by technique pipeline section 7 and entirety probes into about about 1 meter, front-end process pipe 13 inside; Open dust arrester 6, start rotating cup spray gun 13 motor, restart two component charging pump, to be fed stable after, start line mule carriage 1 starts to retreat spraying operation;
5, paint pump 16 is supplied in the rotating cup spray gun 13 of walking dolly 1 front end after driving dual-component coating to mix in a mixer, rotating cup spray gun 13 High Rotation Speed, coating is thrown away by the effect of centrifugal force from the fine hole revolving glass periphery, and is sprayed into elbow internal wall in vaporific;
6, walking dolly 1 retreats to technique pipeline section 7 position, closes paint pump 16, stops walking, finally stops rotating cup spray gun 13 motor, hangs technique pipeline section 7, operation roller-way 18, and bend pipe 4 exits paint-absorbable storehouse 12; Spraying terminates.
In sum, the present invention has simple, the easy to operate advantage of structure, utilize the anti-wheel 3 of overturning on roller 2 automatically can regulate the Equilibrium of walking dolly 1 in the inner walking process of bend pipe 4, bend pipe 4 to be placed on roller-way 18 and to move to sandblasting station or spray station, in the even running process of walking dolly 1, utilizing sand blasting unit or spray equipment to realize derusting by sandblasting or the coating spraying of elbow internal wall.Utilize the present invention produce thickness >=80 μm of coating in bend pipe drag reduction, film formation surface roughness≤7.6 μm, detected by NACE-SP0188/NACE-TM0384 wet sponge low pressure leak source, performance can meet the technical requirement of APIRP5L completely, can be used as natural gas high pressure conveying drag reduction undercoating, solve the problem that manual operation labour intensity is large, improve work quality and operating efficiency.
Claims (7)
1. a big diameter elbow undercoating coating equipment, it is characterized in that: comprise walking dolly (1) and driving mechanism thereof, paint-absorbable storehouse (12), dust arrester (6) and spray equipment, the rotation spray lance (19) of described spray equipment is arranged on walking dolly (1), described walking dolly (1) comprises car body and roller (2), described roller (2) is at least 4, described roller (2) is circumferentially laid with to resist overturns wheel (3), described anti-axis of overturning wheel (3) all with the axes normal of roller (2), walking dolly (1) can be made to radially slide along bend pipe (4) inwall, pending bend pipe (4) one end seals with paint-absorbable storehouse (12) and is connected, described paint-absorbable storehouse (12) is connected with dust arrester (6).
2. big diameter elbow undercoating coating equipment according to claim 1, it is characterized in that: also comprise sand blasting unit, the rotation spray lance (19) of described sand blasting unit is arranged on walking dolly (1), pending bend pipe (4) one end seals with abrasive reclaiming storehouse (5) and is connected, and described abrasive reclaiming storehouse (5) is connected with dust arrester (6).
3. big diameter elbow undercoating coating equipment according to claim 2, is characterized in that: pending bend pipe (4) is arranged on roller-way (18), and described roller-way (18) can be moved by driver part between sandblasting station and spray station.
4. big diameter elbow undercoating coating equipment according to claim 1, is characterized in that: described roller (2) is 4, and the anti-wheel (3) of overturning on each roller (2) is 8.
5. big diameter elbow undercoating coating equipment according to claim 3, it is characterized in that: pending bend pipe (4) other end is provided with technique pipeline section (7), described technique pipeline section (7) and pending bend pipe (4) are with the same caliber of wall thickness, described walking dolly (1) can be placed in technique pipeline section (7), and described technique pipeline section (7) and pending bend pipe (4) are tightly connected; Be provided with front-end process pipe (13) between described paint-absorbable storehouse (12) and pending bend pipe (4), described front-end process pipe (13) is tightly connected respectively with paint-absorbable storehouse (12) and pending bend pipe (4).
6. big diameter elbow undercoating coating equipment according to claim 5, is characterized in that: the tail end of described technique pipeline section (7) is provided with capping.
7. big diameter elbow undercoating coating equipment according to claim 1, is characterized in that: the diameter D of described pending bend pipe is 406 ~ 1422mm, and radius bend is 5D ~ 6D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510714709.2A CN105234052A (en) | 2015-10-29 | 2015-10-29 | Coating device for large-diameter bend inner coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510714709.2A CN105234052A (en) | 2015-10-29 | 2015-10-29 | Coating device for large-diameter bend inner coating |
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| CN105234052A true CN105234052A (en) | 2016-01-13 |
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| CN201510714709.2A Pending CN105234052A (en) | 2015-10-29 | 2015-10-29 | Coating device for large-diameter bend inner coating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106166520A (en) * | 2016-08-24 | 2016-11-30 | 天津扬奇科技有限公司 | A kind of multichannel electrostatic powder rotary spraying car |
| CN111420847A (en) * | 2019-05-14 | 2020-07-17 | 叶连波 | Automatic oiling device for automobile seat slide rail |
| CN112387494A (en) * | 2020-10-29 | 2021-02-23 | 安徽旭通网络科技有限公司 | Anticorrosive spraying equipment of inlayer suitable for arc pipe |
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| JPH06206048A (en) * | 1993-01-13 | 1994-07-26 | Kawasaki Steel Corp | Automatic coating of inner surface of steel pipe on spot and automatic inspection thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106166520A (en) * | 2016-08-24 | 2016-11-30 | 天津扬奇科技有限公司 | A kind of multichannel electrostatic powder rotary spraying car |
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| CN112387494A (en) * | 2020-10-29 | 2021-02-23 | 安徽旭通网络科技有限公司 | Anticorrosive spraying equipment of inlayer suitable for arc pipe |
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Application publication date: 20160113 |
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