CN212483400U - A penetration detection device for oil and gas pipelines - Google Patents

A penetration detection device for oil and gas pipelines Download PDF

Info

Publication number
CN212483400U
CN212483400U CN202021045107.5U CN202021045107U CN212483400U CN 212483400 U CN212483400 U CN 212483400U CN 202021045107 U CN202021045107 U CN 202021045107U CN 212483400 U CN212483400 U CN 212483400U
Authority
CN
China
Prior art keywords
spraying device
rotating shaft
oil
wall
adjusting
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.)
Expired - Fee Related
Application number
CN202021045107.5U
Other languages
Chinese (zh)
Inventor
刘青雯
於琳翰
刘静怡
骆昕
曲婷
刘佳文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Petroleum East China
Original Assignee
China University of Petroleum East China
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China University of Petroleum East China filed Critical China University of Petroleum East China
Priority to CN202021045107.5U priority Critical patent/CN212483400U/en
Application granted granted Critical
Publication of CN212483400U publication Critical patent/CN212483400U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Examining Or Testing Airtightness (AREA)

Abstract

本实用新型公开了一种油气管道用的渗透检测装置,包括爬壁小车、手动喷涂装置和自动喷涂装置,手动喷涂装置设置在爬壁小车的前端,自动喷涂装置设置在爬壁小车的后端,喷装器安装在自动喷涂装置上。本实用新型采用手动喷涂装置和自动喷涂装置相结合的方式进行渗透液的喷涂作业,手动喷涂装置适用于较为规整的工件,自动喷涂装置采用机械臂搭载喷装器的方式对管道进行施加渗透液作业,采用机械臂结构方便在施加渗透液时中及时调节喷涂方向和角度,便于装置对油气管道中的狭缝、深凹槽部位进行渗透检测,更好地适应作业现场的复杂工况,自动化程度高,渗透检测范围广。

Figure 202021045107

The utility model discloses a penetration detection device for oil and gas pipelines, comprising a wall-climbing trolley, a manual spraying device and an automatic spraying device. The manual spraying device is arranged at the front end of the wall-climbing trolley, and the automatic spraying device is arranged at the rear end of the wall-climbing trolley. , the sprayer is installed on the automatic spraying device. The utility model adopts the combination of a manual spraying device and an automatic spraying device to carry out the spraying operation of the permeate. The manual spraying device is suitable for relatively regular workpieces, and the automatic spraying device adopts the mechanical arm equipped with a sprayer to apply the permeate to the pipeline. In operation, the mechanical arm structure is used to facilitate timely adjustment of the spraying direction and angle when applying the permeate, which is convenient for the device to perform penetration detection on the slits and deep grooves in the oil and gas pipelines, and better adapts to the complex working conditions on the job site. High level and wide penetration detection range.

Figure 202021045107

Description

Infiltration detection device that oil gas pipeline was used
Technical Field
The utility model relates to a pipeline nondestructive test technique specifically is a penetration testing device that oil gas pipeline used.
Background
The penetration detection technology is a detection technology based on the capillary action principle and is mainly used for detecting the surface opening defects of non-porous metal or non-metal parts. The basic steps of the penetration detection are pretreatment, penetrating fluid application, redundant penetrating fluid removal, natural drying, developer application, observation and evaluation of display marks. During detection, a penetrating fluid dissolved with fluorescent dye or coloring dye is applied to a workpiece to be detected, the penetrating fluid permeates into tiny surface opening defects due to capillary action, a penetrating agent on the surface of the workpiece to be detected is removed through cleaning, a developing agent is applied after drying, the penetrating fluid in the defects is re-adsorbed on the surface of the workpiece to be detected under the action of capillary phenomenon, amplified defect display is formed, and the appearance and distribution state of the defects can be detected.
In the existing penetration detection method, the penetrating fluid is applied in the step of nondestructive detection on the oil and gas pipeline by means of manual operation of hoisting equipment, the requirement on the skill level of operators is high, the labor intensity is high, and the detection efficiency is low. For the slit and the deep groove part in the oil-gas pipeline, the angle of the existing device can not be adjusted, and the device is difficult to adapt to complex field working conditions.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a permeation testing apparatus for oil and gas pipelines, which can effectively solve the problems of the background art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a infiltration detection device that oil gas pipeline used which characterized in that: including climbing wall dolly, manual spraying device and automatic spraying device, it includes wheel, motor, permanent magnet, battery, direction adjust knob, speed adjust knob, controller, chassis to climb the wall dolly, the chassis includes upper and lower two parts, and the centre passes through bolted connection, the wheel is installed in the chassis lower part, the motor is installed in the chassis lower part, the permanent magnet is installed in the chassis below, battery and controller are installed in the chassis top, direction adjust knob and speed adjust knob are all installed on the controller.
Preferably, manual spraying device sets up climb the front end of wall dolly, including stopper, fixed rotating shaft, holding rod, adjust knob, big arm, coating joint, tubular metal resonator, shower nozzle, the stopper is located manual spraying device's below, fixed rotating shaft links to each other with the stopper, holding rod and stopper fixed connection, adjust knob and stopper and holding rod fixed connection, big arm and fixed rotating shaft fixed connection, the tubular metal resonator is connected with big arm, the spraying connects and installs on the tubular metal resonator, the shower nozzle is installed at the tubular metal resonator tail end. The limiting device and the adjusting knob are used for fixing the position of the rotating shaft, the fixed rotating shaft can rotate around the corresponding limiting device on the limiting device, and the paint joint is used for being connected with an external penetrating fluid generating system and further conveying the penetrating fluid to the position of the spray head.
Preferably, the automatic spraying device includes that the automatic spraying device includes connecting wire, mount table, rotating base, first rotation axis, first regulating arm, second rotation axis, second regulating arm, third rotation axis, coupling mechanism, pipeline joint, spraying device, the connecting wire is connected with the controller electricity, the mount table is connected with rotating base, rotating base with connect through first rotation axis between the first regulating arm, first regulating arm with connect through the second rotation axis between the second regulating arm, connect through the third rotation axis between coupling mechanism and the second regulating arm, pipeline joint installs on coupling mechanism.
Preferably, the spraying device is installed on an automatic spraying device and comprises a buckle, a water inlet, a fixing device and nozzles, the number of the nozzles is three, the nozzles are all installed on the fixing device, the spraying device is fixedly connected with the connecting mechanism through the buckle, and the spraying device is driven by the automatic spraying device, so that the spraying device can perform penetrating fluid spraying work on the surface of an oil-gas pipeline in an all-round and dead-angle-free mode.
Preferably, the pipeline joint is connected with an external pipeline to convey penetrating fluid generated by an external penetrating fluid generation system into the spraying device, and the penetrating fluid is sprayed to the surface of the workpiece to be detected through the nozzle.
Preferably, the permanent magnet is arranged below the chassis of the wall climbing trolley, so that the wall climbing trolley can be adsorbed on the metal pipeline, and the wall climbing trolley can conveniently walk on a steel plate at any position on the surface of the pipeline.
Preferably, the controller can receive wired or wireless signals, can be directly operated on the controller, and can also be remotely controlled and commanded through a remote controller, so that the automation degree is high.
Preferably, the four motors are respectively and independently connected with the four wheels, and when the trolley works, the rotating speed and the torque of the four wheels are controlled through the controller, so that the trolley is moved.
Preferably, the direction adjusting knob is used for adjusting the running direction of the wall climbing trolley, and the speed adjusting knob is used for adjusting the moving speed of the wall climbing trolley.
Preferably, the automatic spraying device and the motor are both connected with a controller, and the running of the wall climbing trolley and the movement of the automatic spraying device are both controlled by the controller.
Preferably, the battery is a lead storage battery, and compared with other batteries, the battery has the characteristics of high specific power, mature manufacturing process and high resource recovery rate, and the power interface is connected with an external power supply through an electric wire.
Preferably, the wheel shell is made of reliable wear-resistant high manganese steel materials, so that the wear of the wall climbing trolley caused by wall attachment friction in the operation process is reduced.
Compared with the prior art, the utility model, following beneficial effect has:
for solving the current problem that the infiltration detection device operation is inconvenient, intensity of labour is big, the utility model discloses a manual spraying device and the mode that automatic spraying device combined together carry out the spraying operation of penetrant, manual spraying device is applicable to comparatively regular work piece, needs the position of operating personnel adjustment fixed rotating shaft and shower nozzle. The automatic spraying device adopts the mechanical arm to carry on the mode of spouting the dress ware and applys the penetrant operation to the pipeline, adopts arm structure convenience in time to adjust spraying direction and angle when applying the penetrant, and the device of being convenient for carries out the penetration detection to slit, deep groove position in the oil gas pipeline, adapts to the complicated operating mode of operation scene better, has improved the work efficiency who detects.
The utility model discloses an operation controller can control the spraying distance on mechanical arm front end and oil gas pipeline top layer, keeps the spraying distance invariable, guarantees the even of penetrant spraying, has reduced the influence of human factor to infiltration testing process, has improved the spraying quality and the infiltration testing effect of penetrant.
For solving the problem that current infiltration detection method intensity of labour is big, degree of automation is low when applying the penetrant, the utility model discloses a wall dolly and automatic spraying device's removal and turning to all to be controlled through the controller manipulation, wired or wireless signal can be accepted to the controller, both can pass through remote controller remote control commander, can utilize manual regulation to operate again, degree of automation is high.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is the structure schematic diagram of the permeation testing apparatus for oil gas pipeline of the present invention.
Fig. 2 is the structural schematic diagram of the wall climbing trolley in the penetration detection device for the oil gas pipeline.
Fig. 3 is the structure diagram of the manual spraying device in the permeation testing apparatus for oil gas pipeline of the present invention.
Fig. 4 is the structural schematic diagram of the automatic spraying device in the permeation detection device for the oil gas pipeline.
Fig. 5 is a schematic structural view of a spraying device in the permeation testing apparatus for the oil gas pipeline.
In the figure: 1. a wall climbing trolley; 11. a wheel; 12. a motor; 13. a permanent magnet; 14. a battery; 15. a direction adjusting knob; 16. a speed adjusting knob; 17. a controller; 18. a chassis; 2. a manual spray device; 21. comprises a position limiter; 22. fixing the rotating shaft; 23. a holding rod; 24. adjusting a knob; 25. a large arm; 26. coating a joint; 27. a metal tube; 28. a spray head; 3. an automatic spraying device; 31. a connecting wire; 32. an installation table; 33. rotating the base; 34. A first rotating shaft; 35. a first adjustment arm; 36. a second rotation shaft; 37. a second adjustment arm; 38. a third rotation axis; 39. a connecting mechanism; 310. a pipe joint; 311. a spray loader; 312. buckling; 313. a water inlet; 314. a fixing device; 315. and (4) a nozzle.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
As shown in fig. 1-5, a penetration detection device for an oil and gas pipeline comprises a wall-climbing trolley 1, a manual spraying device 2 and an automatic spraying device 3, wherein the wall-climbing trolley 1 comprises wheels 11, a motor 12, a permanent magnet 13, a battery 14, a direction adjusting knob 15, a speed adjusting knob 16, a controller 17 and a chassis 18, the chassis 18 of the wall-climbing trolley 1 comprises an upper part and a lower part, the middle parts are connected through bolts, the wheels 11 are installed at the lower part of the chassis 18, the motor 12 is installed at the lower part of the chassis 18, the permanent magnet 13 is installed below the chassis 18, the battery 14 and the controller 17 are installed above the chassis 18, and the direction adjusting knob 15 and the speed adjusting knob 16 are both installed on the controller 17.
The permanent magnet 13 is arranged below the chassis 18 of the wall climbing trolley 1, so that the wall climbing trolley 1 can be adsorbed on any position on the surface of an oil-gas pipeline to move, the four motors 12 are respectively in driving connection with the four wheels 11, and the shells of the wheels 11 are made of reliable and wear-resistant high manganese steel materials, so that the abrasion of the wall climbing trolley 1 caused by wall attachment friction force in the operation process can be reduced. During operation, the controller 17 controls the rotating speed and the torque of the four wheels 11 in a differential mode to achieve advancing, retreating and steering of the trolley, the direction adjusting knob 15 is used for adjusting the running direction of the wall climbing trolley 1, and the speed adjusting knob 16 is used for adjusting the moving speed of the wall climbing trolley 1.
Manual spraying device 2 sets up the front end at climbing wall dolly 1, including stopper 21, fixed rotating shaft 22, holding rod 23, adjust knob 24, big arm 25, coating connects 26, tubular metal resonator 27, shower nozzle 28, stopper 21 is located manual spraying device 2's below, fixed rotating shaft 22 links to each other with stopper 21, holding rod 23 and stopper 21 fixed connection, adjust knob 24 and stopper 21 and holding rod 23 fixed connection, big arm 25 and fixed rotating shaft 22 fixed connection, tubular metal resonator 27 is connected with big arm 25, the spraying connects and installs on tubular metal resonator 27, shower nozzle 28 is installed at tubular metal resonator 27 tail end. The retainer 21 and the adjustment knob 24 are used to fix the position of the rotating shaft 22, the fixed rotating shaft 22 can rotate around the corresponding retainer 21 on the retainer 21, and the paint connector 26 is used to connect with an external permeate producing system to further deliver the permeate to the spray head 28.
The automatic spraying device 3 is arranged at the rear end of the wall climbing trolley 1 and comprises a connecting line 31, an installation platform 32, a rotating base 33, a first rotating shaft 34, a first adjusting arm 35, a second rotating shaft 36, a second adjusting arm 37, a third rotating shaft 38, a connecting mechanism 39, a pipeline joint 310 and a spraying device 311, wherein the spraying device 311 is arranged on the automatic spraying device 3 and consists of a buckle 312, a water inlet 313, a fixing device 314 and a nozzle 315. The connecting line 31 is electrically connected with the controller 17, the mounting table 32 is connected with the rotating base 33, the rotating base 33 is connected with the first adjusting arm 35 through the first rotating shaft 34, the first adjusting arm 35 is connected with the second adjusting arm 37 through the second rotating shaft 36, the connecting mechanism 39 is connected with the second adjusting arm 37 through the third rotating shaft 38, the pipeline joint 310 is mounted on the connecting mechanism 39, and the pipeline joint 310 is connected with an external pipeline to convey penetrating fluid generated by an external penetrating fluid generating system into the spraying device 311 and spray the penetrating fluid onto the surface of a workpiece to be detected through the nozzle 315.
The utility model discloses well automatic spraying device 3 and motor 12 all are connected with controller 17, and the motion of going, automatic spraying device 3 of climbing wall dolly 1 is controlled by controller 17. The controller 17 can receive wired or wireless signals, can be remotely controlled through a remote controller and can be operated by manual adjustment, the automation degree is high, and the problems of high labor intensity and low automation degree when penetrating fluid is applied in the existing penetration detection method are solved.
The utility model discloses a mode that manual spraying device 2 and automatic spraying device 3 combined together carries out the spraying operation of penetrant, and manual spraying device 2 is applicable to comparatively regular work piece, needs the position of operating personnel adjustment fixed rotating shaft 22 and shower nozzle 28. The automatic spraying device 3 applies penetrating fluid operation to the pipeline in a mode that the mechanical arm carries the spraying device 311, the mechanical arm structure is adopted to facilitate timely adjusting the spraying direction and angle when the penetrating fluid is applied, the device is convenient for performing penetration detection on slits and deep groove positions in the oil-gas pipeline, complex working conditions of an operation site are better adapted, and the detection working efficiency is improved.
The utility model discloses a power supply mode of dual supply both can supply power through battery 14, also can use power source and external power source to link to each other for the device power supply, has improved the practicality of device, avoids the operation in-process to take place unexpected outage. The battery 14 is a lead storage battery, and has the characteristics of high specific power, mature manufacturing process and high resource recovery rate compared with other batteries.
The using method comprises the following steps: when in use, the manual spraying device 2 or the automatic spraying device 3 is selected according to the position to be sprayed of the pipeline, if the manual spraying device 2 is selected, the positions of the fixed rotating shaft 22 and the spray head 28 are required to be adjusted, then the position of the fixed rotating shaft 22 is fastened through the adjusting limiting device 21 and the adjusting knob 24, then the coating connector 26 is connected with an external penetrating fluid generating system, and penetrating fluid is further conveyed to the position of the spray head 28 to be sprayed on the pipeline.
If the automatic spraying apparatus 3 is selected, it is required to install the sprayer 311 on the connection mechanism 39, and then the pipe joint 310 is connected with the external pipe to deliver the penetrating fluid generated from the external penetrating fluid generating system to the sprayer 311, then the utility model is absorbed on the surface of the oil gas pipeline, the distance between the lower end of the nozzle 315 and the surface of the pipeline is adjusted, then the wall climbing trolley 1 is started by operating the controller 17, moved to the position to be detected of the pipeline, the water is sprayed to the surface of the workpiece to be detected through the nozzle 315, the angle and the extension length of each part of the automatic spraying device 3 are further adjusted through operating the controller 17 or a remote controller, the nozzle 315 below the sprayer 311 can be close to the surface of the pipeline to be subjected to penetration detection, the spraying distance is kept constant, the uniformity of spraying of penetrating fluid is ensured, and the influence of human factors on the penetration detection process is reduced.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. The utility model provides a infiltration detection device that oil gas pipeline used which characterized in that: the automatic wall-climbing spraying device comprises a wall-climbing trolley (1), a manual spraying device (2) and an automatic spraying device (3), wherein the manual spraying device (2) is arranged at the front end of the wall-climbing trolley (1), and the automatic spraying device (3) is arranged at the rear end of the wall-climbing trolley (1).
2. The permeation testing apparatus for an oil and gas pipeline according to claim 1, wherein: wall-climbing trolley (1) includes wheel (11), motor (12), permanent magnet (13), battery (14), direction adjust knob (15), speed adjust knob (16), controller (17), chassis (18) are including upper and lower two parts, and the centre passes through bolted connection, wheel (11) are installed in chassis (18) lower part, motor (12) are installed in chassis (18) lower part, permanent magnet (13) are installed in chassis (18) below, install in chassis (18) top battery (14) and controller (17), direction adjust knob (15) and speed adjust knob (16) are all installed on controller (17).
3. The permeation testing apparatus for an oil and gas pipeline according to claim 1, wherein: the manual spraying device (2) comprises a limiter (21), a fixed rotating shaft (22), a holding rod (23), an adjusting knob (24), a large arm (25), a coating connector (26), a metal pipe (27) and a spray head (28), wherein the limiter (21) is positioned below the manual spraying device (2), the fixed rotating shaft (22) is connected with the limiter (21), the holding rod (23) is fixedly connected with the limiter (21), the adjusting knob (24) is fixedly connected with the limiter (21) and the holding rod (23), the large arm (25) is fixedly connected with the fixed rotating shaft (22), the metal pipe (27) is connected with the large arm (25), the coating connector (26) is installed on the metal pipe (27), the spray head (28) is installed at the tail end of the metal pipe (27), and the limiter (21) and the adjusting knob (24) are used for fixing the position of the rotating shaft (22), the fixed shaft (22) can rotate around a corresponding stopper (21) on the stopper (21), and the paint connector (26) is used for connecting with an external penetrating fluid generating system and further delivering penetrating fluid to the position of the spray head (28).
4. The permeation testing apparatus for an oil and gas pipeline according to claim 1, wherein: the automatic spraying device (3) comprises a connecting line (31), a mounting table (32), a rotating base (33), a first rotating shaft (34), a first adjusting arm (35), a second rotating shaft (36), a second adjusting arm (37), a third rotating shaft (38), a connecting mechanism (39), a pipeline joint (310) and a spraying device (311), the connecting wire (31) is electrically connected with the controller (17), the mounting table (32) is connected with the rotating base (33), the rotating base (33) is connected with the first adjusting arm (35) through a first rotating shaft (34), the first adjusting arm (35) is connected with the second adjusting arm (37) through a second rotating shaft (36), the connecting mechanism (39) is connected with the second adjusting arm (37) through a third rotating shaft (38), and the pipeline joint (310) is installed on the connecting mechanism (39).
5. The permeation testing apparatus for an oil and gas pipeline according to claim 2, wherein: the number of the motors (12) is four, and the motors are respectively and independently connected with the four wheels (11).
6. The permeation testing apparatus for an oil and gas pipeline according to claim 2, wherein: the direction adjusting knob (15) is used for adjusting the running direction of the wall climbing trolley (1).
7. The permeation testing apparatus for an oil and gas pipeline according to claim 2, wherein: the speed adjusting knob (16) is used for adjusting the moving speed of the wall climbing trolley (1).
8. The permeation testing apparatus for an oil and gas pipeline according to claim 4, wherein: the spraying device (311) is arranged on the automatic spraying device (3) and consists of a buckle (312), a water inlet (313), a fixing device (314) and a nozzle (315).
CN202021045107.5U 2020-06-09 2020-06-09 A penetration detection device for oil and gas pipelines Expired - Fee Related CN212483400U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021045107.5U CN212483400U (en) 2020-06-09 2020-06-09 A penetration detection device for oil and gas pipelines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021045107.5U CN212483400U (en) 2020-06-09 2020-06-09 A penetration detection device for oil and gas pipelines

Publications (1)

Publication Number Publication Date
CN212483400U true CN212483400U (en) 2021-02-05

Family

ID=74416421

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021045107.5U Expired - Fee Related CN212483400U (en) 2020-06-09 2020-06-09 A penetration detection device for oil and gas pipelines

Country Status (1)

Country Link
CN (1) CN212483400U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119897877A (en) * 2024-12-09 2025-04-29 国网湖南省电力有限公司 A weld nondestructive testing collaborative robot and control method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119897877A (en) * 2024-12-09 2025-04-29 国网湖南省电力有限公司 A weld nondestructive testing collaborative robot and control method

Similar Documents

Publication Publication Date Title
CN206028002U (en) Novel oil tank mechanical rust removal , automatic spraying system
CN103316817A (en) Pipeline spraying robot
CN212483400U (en) A penetration detection device for oil and gas pipelines
CN110847571A (en) Spraying robot for tall buildings
CN105774934B (en) A kind of mechanism that walks up and down of wind-power tower maintaining robot
CN206990499U (en) A kind of crossed yoke method Magnetic testing automatic creeping device
CN219465193U (en) Wall climbing welding robot
CN211914312U (en) Automatic spraying system for pipe fitting bell and spigot
JP2644365B2 (en) Pipe inner surface repair painting robot
CN116176724A (en) Pull arm type climbing robot for outer wall operation of large wind power tower
CN205380011U (en) Drilling rod internal surface metal nanoparticles anticorrosive paint spraying device that excels in
CN109433480A (en) A kind of automatic spray apparatus for inner wall of the pipe
JPS63158386A (en) In-pipe execution method
CN112606924A (en) Rust removal robot
CN106944892A (en) A kind of cast tube process equipment of high working efficiency
CN102527581A (en) Paint coating and spraying equipment in large pipeline
CN216887263U (en) Aircraft fuselage belt cleaning device
CN215843707U (en) Nimble efficient self-propelled coating spraying platform truck
CN111317394A (en) Curtain wall glass cleaning method without hoisting
CN109848817A (en) A kind of metal tubes derusting mopping all-in-one machine
CN212576629U (en) Spraying part of automatic spraying system for finished reels
CN213793269U (en) A GIS pipeline cleaning robot
CN206778780U (en) Water paint spraying equipment
CN115591695A (en) Paint automatic spraying device and spraying method for construction site
CN210935551U (en) A grinding and coating device for arch rib of concrete-filled steel tube arch bridge

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210205

Termination date: 20210609