CN105618308A - Passive self-walking pipeline inner wall spray-coating car and application method thereof - Google Patents
Passive self-walking pipeline inner wall spray-coating car and application method thereof Download PDFInfo
- Publication number
- CN105618308A CN105618308A CN201610162602.6A CN201610162602A CN105618308A CN 105618308 A CN105618308 A CN 105618308A CN 201610162602 A CN201610162602 A CN 201610162602A CN 105618308 A CN105618308 A CN 105618308A
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- wheel group
- chassis
- wheel
- oil motor
- pipeline
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- 238000005507 spraying Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000011248 coating agent Substances 0.000 claims description 27
- 238000000576 coating method Methods 0.000 claims description 27
- 238000004146 energy storage Methods 0.000 claims description 22
- 239000007921 spray Substances 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 21
- 230000033001 locomotion Effects 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 2
- 239000003973 paint Substances 0.000 abstract description 3
- 230000032683 aging Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
Abstract
The invention discloses a passive self-walking pipeline inner wall spray-coating car and an application method thereof. The spray-coating car comprises a hydraulic motor, a first chassis and a second chassis, wherein the first chassis and the second chassis are arranged at the two sides of the hydraulic motor; an energy accumulator and an unloading machine are arranged on the first chassis and are connected to the hydraulic motor; a rotary disc is arranged inside the hydraulic motor; a spray-coating pipe is arranged at the sidewall of the hydraulic motor; a second wheel group and a third wheel group are arranged at the bottom of the second chassis; a driving shaft is arranged between the second wheel group and the third wheel group; a first bevel gear is arranged at one end of the driving shaft and is meshed with a second bevel gear of the second wheel group; a belt wheel is arranged at the other end of the driving shaft and is meshed with one end of a belt; the other end of the belt is connected with the hydraulic motor; a high-pressure paint can be input to the hydraulic motor by virtue of the energy accumulator; the high-pressure paint flows through the rotary disc inside the hydraulic motor and is sprayed out via the spray-coating pipe so as to realize spray-coating of a pipeline; meanwhile, torque is generated to drive the hydraulic motor to rotate in order to drive the spray-coating car to automatically walk inside the pipeline; therefore, uniform spray coating can be realized, no electric power is needed for driving, and the spray-coating car is safe and labor-saving.
Description
Technical field
The present invention relates to pipeline protection technical field, particularly relate to a kind of passive from walking pipe inner-wall spraying car and using method thereof.
Background technology
In modern industry, building, tubing is a kind of material of construction being widely used. In order to allow pipeline adapt to different liquids, usually at the multiple special coating of pipe inner-wall spraying, can make can not leak when flowing through high temperature in pipeline or there is highly corrosive liquid, the mishap such as it is split up.
For various pipe inner-wall spraying coating mainly relies on pipe inner-wall spraying machine, pipe inner-wall spraying machine domestic at present mainly contains two kinds, a kind of is utilize electric power as the spraying machine of the energy, another kind is that manpower pulls, the spraying machine of hydro-pump energy supply, all there is the defect being difficult to make up in these two kinds of spraying machines. Driven by power is relied on to advance and the spraying machine that sprays, owing to long term operation is under comparatively moist environment, the circuit of spraying machine itself is very easily caused to occur aging, electric leakage phenomenon, it is possible to cause the situation of pipe inner-wall spraying machine circuit malfunction generation fault in inner-wall spraying process and blast waiting danger. And the spraying machine with hydraulic pressure spray gun sprayed coating, its wheel easily is scraped the coating of the coating just spraying to inner-walls of duct fall, and due to be with pull advance spraying, cannot ensure that the spraying of coating is even, even can generating portion inner-walls of duct settling off, section of tubing inner-wall paint is not enough, causes the detrimentally affect such as part corrosion or local heat radiation deficiency.
Therefore, it is necessary to a kind of better pipe inner-wall spraying machine of design, to solve the problem.
Summary of the invention
For prior art Problems existing, the present invention provides a kind of and is evenly sprayed by inner-walls of duct, and can avoid the potential safety hazard that driven by power brings, it is ensured that spraying vehicle and pipe safety passive from walking pipe inner-wall spraying car and using method thereof.
In order to realize above-mentioned purpose, the present invention adopts following technical scheme:
A kind of passive from walking pipe inner-wall spraying car, comprise oil motor and it is located at the first chassis and the 2nd chassis of described oil motor both sides, described first chassis and described 2nd chassis are provided with support, described oil motor is set up on described support, described first chassis is provided with energy storage device and unloader, described energy storage device and described unloader are connected to described oil motor by pipeline, the bottom on described first chassis is provided with the first wheel group, the cavity of hollow it is provided with in described oil motor, rotation dish it is provided with in described cavity, the sidewall of described cavity is provided with spray pipe, the bottom on described 2nd chassis is provided with the 2nd wheel group and the 3rd wheel group, it is provided with transmission shaft between described 2nd wheel group and described 3rd wheel group, one end of described transmission shaft is provided with the first cone gear and is meshed with the 2nd cone gear of described 2nd wheel group, the other end is provided with belt pulley and is meshed in order to the one end with belt, the other end of described belt is connected with the output shaft end of described oil motor.
Further, described pipeline is three head tube roads, is connected to described energy storage device, described unloader and described oil motor, and the described pipeline being connected to described unloader is provided with one-way load releasing valve, and the described pipeline being connected to described oil motor is provided with potentiostat.
Further, described support is provided with bearing, on the input shaft end that described bearing is installed in described oil motor and output shaft end.
Further, the both sides, front end on described first chassis are provided with guide wheel, and described guide wheel rolls along described inner-walls of duct.
Further, being connected with damper brake line between described 2nd wheel group and described 3rd wheel group, described damper brake wire-wound is located at described 2nd wheel group or/and in described 3rd wheel group.
Further, described first wheel group comprises three wheel bottoms being arranged at described first chassis triangular in shape, and described 2nd wheel group and described 3rd wheel group have two wheels respectively, jointly surround rectangle, and described wheel is universal wheel.
Further, described 2nd wheel group or/and described 3rd wheel group two wheels between connected by wheel axle, described 2nd cone gear is arranged on described wheel axle.
Further, being provided with drive axle support between described 2nd wheel group and described 3rd wheel group, described drive axle support is provided with axis hole and passes for described transmission shaft.
Further, the end on described 2nd chassis is provided with and retracts hole, described in retract hole connect wired.
A kind of using method adopting the above-mentioned passive pipe inner-wall spraying car of walking certainly, comprise: described spraying vehicle is placed in pipeline to be sprayed, open described energy storage device, high pressure coating in described energy storage device enters described oil motor through described pipeline, described high pressure coating flows through described rotation dish, spray through described spray pipe, so that described pipeline is sprayed, torque is produced when described high pressure coating flows through rotation dish, described oil motor is driven to rotate, belt movement described in described fluid motor-driven, transmission shaft described in described belt drives rotates, described transmission shaft drives described 2nd wheel group motion, and then drive described spraying vehicle automatically to walk in described pipeline.
The useful effect of the present invention:
In oil motor, high pressure coating is inputted by energy storage device, high pressure coating flows through rotation dish in oil motor, spray through spray pipe, so that pipeline is sprayed, torque is produced when high pressure coating flows through rotation dish simultaneously, drive oil motor rotates, oil motor is rotated by belt drive transmission shaft, and then drive wheel group to rotate, realize spraying vehicle automatically to walk in pipeline, moved by high pressure coating automatic traction spraying vehicle, make spraying vehicle uniform motion, ensure that inner-walls of duct is evenly sprayed by oil motor, and drive oil motor to rotate by paint-flow, and then drive spraying vehicle motion, electrical spark that driven by power brings can be avoided or the potential safety hazard such as circuit is aging, guarantee spraying vehicle and pipe safety.
Accompanying drawing explanation
Fig. 1 is the passive one-piece construction schematic diagram from walking pipe inner-wall spraying car of the present invention;
Fig. 2 is the passive structural representation cutd open from walking pipe inner-wall spraying car upper part of the present invention;
Fig. 3 is the passive upward view from walking pipe inner-wall spraying car of the present invention;
Fig. 4 is the passive frontview from walking pipe inner-wall spraying car of the present invention;
Fig. 5 is the passive side-view from walking pipe inner-wall spraying car of the present invention;
In figure, 1 first chassis, 2 energy storage devices, 3 unloaders, 4 pipelines, 5 potentiostats, 6 supports, 7 bearings, 8 first wheel groups, 9 guide wheels, 10 oil motors, 11 first end caps, 12 the 2nd end caps, 13 cavitys, 14 input shaft ends, 15 output shaft ends, 16 rotation dishes, 17 grooves, 18 spray pipes, 19 the 2nd chassis, 20 flutings, 21 belts, 22 the 2nd wheel groups, 23 the 3rd wheel groups, 24 transmission shafts, 25 first cone gears, 26 the 2nd cone gears, 27 belt pulleys, 28 wheel axles, 29 drive axle supports, 30 damper brake lines, 31 retract hole.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, instead of whole embodiments. Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Need explanation, all directivity instruction (such as up, down, left, right, before and after in the embodiment of the present invention ...) only for explaining relative position relation between each parts, motion conditions etc. under a certain particular pose (as shown in drawings), if when this particular pose changes, then directionality instruction also correspondingly changes thereupon.
In addition, the description relating to " first ", " the 2nd " etc. in the present invention is only for describing object, and can not be interpreted as instruction or imply its relative importance or the implicit quantity indicating indicated technology feature. Thus, be limited with " first ", the feature of " the 2nd " can express or implicit comprise at least one this feature. In addition; technical scheme between each embodiment can be combined with each other; but must be can be embodied as basis with those of ordinary skill in the art; when technical scheme combination occur conflicting maybe cannot realize time will be understood that the combination of this kind of technical scheme does not exist, also not the present invention require protection domain within.
Such as Fig. 1, the present invention provides a kind of passive from walking pipe inner-wall spraying car, comprise oil motor 10 and it is located at the first chassis 1 and the 2nd chassis 19 of oil motor 10 both sides, first chassis 1 and the 2nd chassis 19 are provided with support 6 near the position of oil motor 10, oil motor 10 is set up on support 6,6 one-tenth, support spill, support 6 is provided with bearing 7, on the input shaft end 14 that bearing 7 is installed in oil motor 10 and output shaft end 15, support 6 and oil motor 10 it is connected to so that oil motor 10 can rotate by opposite brackets 6 by bearing 7. The bottom that the bottom on the first chassis 1 is provided with the first wheel group the 8, two chassis 19 is provided with the 2nd wheel group 22 and the 3rd wheel group 23.
Such as Fig. 1, Fig. 3 and Fig. 5, the first chassis 1 is provided with energy storage device 2 and unloader 3, and energy storage device 2 and unloader 3 are hydraulic energy storage device and hydraulic unloading device, and installing coating in energy storage device 2, coating is high pressure coating when energy storage device 2 sprays. Energy storage device 2 and unloader 3 are connected to oil motor 10 by pipeline 4, in the present embodiment, pipeline 4 is three head tube roads, it is connected to energy storage device 2, unloader 3 and oil motor 10, the pipeline being connected to unloader 3 is provided with one-way load releasing valve (not shown), the pipeline being connected to oil motor 10 is provided with potentiostat 5, the stable pressure from energy storage device 2 coating out. The both sides, front end on the first chassis 1 are provided with guide wheel 9, and spraying vehicle is when pipeline internal is walked, and guide wheel 9 rolls along inner-walls of duct, correcting spraying vehicle direction of motion, ensure that travel direction is correct. The bottom on the first chassis 1 is provided with the first wheel group 8, first wheel group 8 and comprises three wheel settings triangular in shape, and each wheel is universal wheel.
Such as Fig. 2 and Fig. 4, oil motor 10 comprises the first end cap 11 and the 2nd end cap 12, first end cap 11 and the 2nd end cap 12 and is bolted, and both enclose the cavity 13 forming hollow, and the sidewall of cavity 13 is provided with spray pipe 18. First end cap 11 is ladder cylindrical cavity housing, the front end of the first end cap 11 is provided with input shaft end 14, input shaft end 14 is quill shaft, is connected with pipeline 4, and input shaft end 14 is set up on support 6, it is provided with rotation dish 16 in first end cap 11, rotation dish 16 is radially provided with multiple groove 17, after coating enters oil motor 10 by pipeline 4, flows through the groove 17 of rotation dish 16, then spray by spray pipe 18, to spray pipeline. 2nd end cap 12 is ladder cylindrical cavity housing, spray pipe 18 is arranged on the sidewall of the 2nd end cap 12, namely spray pipe 18 and pipeline 4 import be positioned at the both sides of rotation dish 16, the aft end face of the 2nd end cap 12 be provided with output shaft end 15, output shaft end 15 is solid shaft, and output shaft end 15 is located on the support 6 on the 2nd chassis 19 by bottom bracket 7.
Such as Fig. 3 and Fig. 4, the bottom on the 2nd chassis 19 is provided with the 2nd wheel group 22 and the 3rd wheel group the 23, two wheel group 22 and the 3rd wheel group 23 and arranges in front two rows, has two wheels respectively, and four wheels surround rectangle jointly, and wheel is universal wheel. 2nd wheel group 22 or/and the 3rd wheel group 23 two wheels between connected by wheel axle 28, wheel axle 25 is provided with the 2nd cone gear 26. it is provided with drive axle support 29 between 2nd wheel group 22 and the 3rd wheel group 23, drive axle support 29 is provided with axis hole and passes for transmission shaft 24, one end of transmission shaft 24 be provided with the first cone gear 25 with on the wheel axle 28 of the 2nd wheel group 22 the 2nd cone gear 26 be meshed, first cone gear 25 is fixed on transmission shaft 24, 2nd cone gear 26 is fixed on wheel axle 28, the other end of transmission shaft 24 is fixed with belt pulley 27 in order to be meshed with one end of belt 21, the fluting 20 of the other end of belt 21 on the 2nd chassis 19 is connected with the output shaft end 15 of oil motor 10, when oil motor 10 rotates, belt 21 can be driven to move, belt 21 drives belt pulley 27 and drives transmission shaft 24 to rotate, first cone gear 25 is meshed with the 2nd cone gear 26, make the motion of rotating drive the 2nd wheel group 22 of transmission shaft 24, thus realize the automatic walking of spraying vehicle. therefore can flow into oil motor 10 by high pressure coating finally drives spraying vehicle automatically to walk, make spraying vehicle uniform motion, ensure that inner-walls of duct is evenly sprayed by oil motor 10, and drive oil motor 10 to rotate by paint-flow, and then drive spraying vehicle motion, electrical spark that driven by power brings can be avoided or the potential safety hazard such as circuit is aging, it is ensured that spraying vehicle and pipe safety.
Such as Fig. 3 and Fig. 4, it is connected with damper brake line 30 between 2nd wheel group 22 and the 3rd wheel group 23, damper brake wire-wound 30 is located at the 2nd wheel group 22 or/and in the 3rd wheel group 23, before spraying vehicle starts, first the damper brake line 30 with this pipeline spraying length length such as grade is wrapped in the 2nd wheel group 22, in spraying vehicle moving process, damper brake line 30 is constantly wound in the 3rd wheel group 23, when arriving spraying terminal, damper brake line 30 is all wound in the 3rd wheel group 23, make the 2nd wheel group 22 cannot continue to move ahead, thus realize wheel group automatic braking. After spraying vehicle travels decrease in velocity, transmission shaft 24 rotates and is obstructed, and the rotation of belt 21 is also obstructed, the rotation of oil motor 10 is caused to be obstructed so that oil motor 10 internal pressure rises, and unloading one-way valve is opened automatically, coating enters in unloader 3, thus completes a pipeline spraying effect. Adopt that the present invention's is passive simple from walking pipe inner-wall spraying bassinet structure, automatically complete to spray, the function of walking and braking, it is not necessary to driven by power or manually pull, safety labor-saving.
Such as Fig. 1,2nd wheel group 22 end be provided with and retract hole 31, retract hole 31 connects wired, line is connected to pipeline initiating terminal place, if spraying vehicle blocks in spraying process, it is possible to pull spraying vehicle by line, adjustment direction or position, spraying vehicle is retracted after completing spraying in pipeline by spraying vehicle by the line retracted on hole 31.
Adopt the above-mentioned passive using method from walking pipe inner-wall spraying car as follows:
First, spraying vehicle is placed in pipeline to be sprayed, open energy storage device 2, high pressure coating in energy storage device 2 enters oil motor 10 through pipeline 4, high pressure coating flows through rotation dish 16, spray through spray pipe 18, so that pipeline is sprayed, torque is produced when high pressure coating flows through rotation dish 16, oil motor 10 is driven to rotate, oil motor 10 drives belt 21 to move, belt 21 drives belt pulley 27 to rotate, and then drive transmission shaft 24 to rotate, transmission shaft 24 drives the 2nd wheel group 22 to move, and then drive spraying vehicle automatically to walk in pipeline, realize the even spraying of pipeline, and drive oil motor 10 to rotate by high pressure coating, and then drive spraying vehicle to walk at pipeline internal, without the need to driven by power or manually pull, not only enough avoid electrical spark that driven by power brings or the potential safety hazard such as circuit is aging, guarantee spraying vehicle and pipe safety, can also ensure that spraying is evenly, spray efficiency height.
Above embodiment is only in order to illustrate the technical scheme of the present invention and unrestricted, although with reference to better embodiment to invention has been detailed explanation, those skilled in the art are to be understood that, the technical scheme of the present invention can be modified or equivalent replacement, and not departing from objective and the scope of the technical program, it all should be encompassed in the right of the present invention.
Claims (10)
1. a passive walking pipe inner-wall spraying car certainly, it is characterized in that, comprise: oil motor and be located at the first chassis and the 2nd chassis of described oil motor both sides, described first chassis and described 2nd chassis are provided with support, described oil motor is set up on described support, described first chassis is provided with energy storage device and unloader, described energy storage device and described unloader are connected to described oil motor by pipeline, the bottom on described first chassis is provided with the first wheel group, the cavity of hollow it is provided with in described oil motor, rotation dish it is provided with in described cavity, the sidewall of described cavity is provided with spray pipe, the bottom on described 2nd chassis is provided with the 2nd wheel group and the 3rd wheel group, it is provided with transmission shaft between described 2nd wheel group and described 3rd wheel group, one end of described transmission shaft is provided with the first cone gear and is meshed with the 2nd cone gear of described 2nd wheel group, the other end is provided with belt pulley and is meshed in order to the one end with belt, the other end of described belt is connected with the output shaft end of described oil motor.
2. according to claim 1 passive from walking pipe inner-wall spraying car, it is characterized in that: described pipeline is three head tube roads, it is connected to described energy storage device, described unloader and described oil motor, the described pipeline being connected to described unloader is provided with one-way load releasing valve, and the described pipeline being connected to described oil motor is provided with potentiostat.
3. according to claim 1 passive from walking pipe inner-wall spraying car, it is characterised in that: described support is provided with bearing, on the input shaft end that described bearing is installed in described oil motor and output shaft end.
4. according to claim 1 passive from walking pipe inner-wall spraying car, it is characterised in that: the both sides, front end on described first chassis are provided with guide wheel, and described guide wheel rolls along described inner-walls of duct.
5. according to claim 1 passive from walking pipe inner-wall spraying car, it is characterized in that: be connected with damper brake line between described 2nd wheel group and described 3rd wheel group, described damper brake wire-wound is located at described 2nd wheel group or/and in described 3rd wheel group.
6. according to claim 1 passive from walking pipe inner-wall spraying car, it is characterized in that: described first wheel group comprises three wheel bottoms being arranged at described first chassis triangular in shape, described 2nd wheel group and described 3rd wheel group have two wheels respectively, jointly surrounding rectangle, described wheel is universal wheel.
7. according to claim 6 passive from walking pipe inner-wall spraying car, it is characterised in that: described 2nd wheel group or/and described 3rd wheel group two wheels between connected by wheel axle, described 2nd cone gear is arranged on described wheel axle.
8. according to claim 1 passive from walking pipe inner-wall spraying car, it is characterised in that: being provided with drive axle support between described 2nd wheel group and described 3rd wheel group, described drive axle support is provided with axis hole and passes for described transmission shaft.
9. according to claim 1 passive from walking pipe inner-wall spraying car, it is characterised in that: the end on described 2nd chassis is provided with and retracts hole, described in retract hole connect wired.
10. one kind adopts the passive using method from walking pipe inner-wall spraying car according to claim 1, it is characterized in that, comprise: described spraying vehicle is placed in pipeline to be sprayed, open described energy storage device, high pressure coating in described energy storage device enters described oil motor through described pipeline, described high pressure coating flows through described rotation dish, spray through described spray pipe, so that described pipeline is sprayed, torque is produced when described high pressure coating flows through rotation dish, described oil motor is driven to rotate, belt movement described in described fluid motor-driven, transmission shaft described in described belt drives rotates, described transmission shaft drives described 2nd wheel group motion, and then drive described spraying vehicle automatically to walk in described pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610162602.6A CN105618308B (en) | 2016-03-22 | 2016-03-22 | It is a kind of passive from walking pipe inner-wall spraying car and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610162602.6A CN105618308B (en) | 2016-03-22 | 2016-03-22 | It is a kind of passive from walking pipe inner-wall spraying car and its application method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105618308A true CN105618308A (en) | 2016-06-01 |
| CN105618308B CN105618308B (en) | 2017-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610162602.6A Expired - Fee Related CN105618308B (en) | 2016-03-22 | 2016-03-22 | It is a kind of passive from walking pipe inner-wall spraying car and its application method |
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| Country | Link |
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| CN (1) | CN105618308B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108906435A (en) * | 2018-09-19 | 2018-11-30 | 四川西南环保科技防腐股份有限公司 | Powder spray vehicle for pipeline internal joint patch |
| CN112588539A (en) * | 2020-10-27 | 2021-04-02 | 吉林大学 | Spraying method of anticorrosive paint for inner surface of marine pipeline of ship |
| CN113275166A (en) * | 2021-04-28 | 2021-08-20 | 浙江易承环境科研有限公司 | Trenchless pipeline repairing device and repairing method |
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| JPH09150096A (en) * | 1995-12-01 | 1997-06-10 | Kawasaki Steel Corp | Method and apparatus for painting inner surface of pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108906435A (en) * | 2018-09-19 | 2018-11-30 | 四川西南环保科技防腐股份有限公司 | Powder spray vehicle for pipeline internal joint patch |
| CN112588539A (en) * | 2020-10-27 | 2021-04-02 | 吉林大学 | Spraying method of anticorrosive paint for inner surface of marine pipeline of ship |
| CN112588539B (en) * | 2020-10-27 | 2021-10-29 | 吉林大学 | Spraying method of anticorrosive paint for inner surface of marine pipeline of ship |
| CN113275166A (en) * | 2021-04-28 | 2021-08-20 | 浙江易承环境科研有限公司 | Trenchless pipeline repairing device and repairing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105618308B (en) | 2017-12-22 |
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