A transition resistance measuring auxiliary device for a gas pipeline flange

Abstract

The application discloses a kind of transition resistance measurement auxiliary devices of gas pipeline flange, including annular assembly, connecting assembly, power assembly, carousel, be installed on the file paint component and coating component of carousel, annular assembly is used to install in the outer surface of pipeline, connecting assembly and the arc side surface of annular assembly sliding connection, one end of connecting assembly is connected with power assembly, the other end of connecting assembly is rotatably connected with carousel, file paint component and coating component are spaced apart and installed on carousel, power assembly can drive connecting assembly along annular assembly arc motion, drive file paint component reciprocating motion along flange surface, to paint on the flange surface file down and carry out transition resistance measurement.The application can automatically weld flange and wire, and automatically paint on the file paint position or welding position on flange, resistance can be immediately processed after measurement, can effectively avoid the paint surface damage of flange caused by transition resistance measurement work, avoid the corrosion of flange.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment technology for gas pipeline flanges, and more particularly to an auxiliary device for measuring the transition resistance of gas pipeline flanges. Background Technology

[0002] When the transition resistance at the joints of long metal objects such as elbows, valves, and flanges exceeds 0.03 ohms, a metal wire bridging should be used at the joint. For flanges with at least five bolts, bridging is not required in non-corrosive environments. After pipeline laying is completed, the transition resistance of the flanges needs to be measured to ensure the safe transport of materials.

[0003] In existing technologies, measuring the transition resistance of a flange typically requires filing off the paint on both sides of the flange before using testing equipment. If the measurement fails, soldering of the wires is necessary. After soldering or measurement, the filed areas must be repainted to prevent rust and corrosion. However, most existing testing equipment cannot treat the filed areas, necessitating additional flange repair work by other personnel.

[0004] How to design an auxiliary device for measuring the transition resistance of gas pipeline flanges that can solve the above-mentioned technical problems is a topic that the inventor has devoted himself to researching. Summary of the Invention

[0005] The purpose of this invention is to provide an auxiliary device for measuring the transition resistance of a gas pipeline flange. This device can automatically weld the flange and the wire, and automatically paint the filed and / or welded areas on the flange. The resistance can be processed immediately after measurement, which can effectively avoid damage to the flange paint and corrosion caused by the transition resistance measurement.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: an auxiliary device for measuring the transition resistance of a gas pipeline flange, comprising an annular assembly, a connecting assembly, a power assembly, a turntable, a paint-removing assembly and a coating assembly mounted on the turntable. The annular assembly is installed on the outer surface of the pipeline. The connecting assembly is slidably connected to the arcuate side of the annular assembly. One end of the connecting assembly is connected to the power assembly, and the other end of the connecting assembly is rotatably connected to the turntable. The paint-removing assembly and the coating assembly are installed alternately on the turntable. The power assembly can drive the connecting assembly to perform an arcuate movement along the annular assembly and drive the paint-removing assembly to reciprocate along the flange surface to remove the paint from the flange surface for transition resistance measurement.

[0007] The present invention provides an auxiliary device for measuring the transition resistance of a gas pipeline flange, wherein the annular component includes two semi-rings arranged vertically, one end of the two semi-rings is rotatably connected, and the other end of the two semi-rings is connected and fixed by a connector, and the two semi-rings are connected to form a ring.

[0008] This invention discloses an auxiliary device for measuring the transition resistance of a gas pipeline flange. The connecting assembly includes a slider, a connecting rod, a bushing, and a first spring. An arc-shaped groove is circumferentially arranged on the front surface of the upper semi-annular body. The slider is slidably disposed on the groove. The outer surface of the bushing is connected to the front surface of the slider. The connecting rod slides downward through the inner cavity of the bushing. The first spring is disposed at the upper end of the bushing and is mounted on the connecting rod, with its upper end fixed to the upper end of the connecting rod. The lower end of the connecting rod is rotatably connected to a turntable. The sidewall of the bushing is connected to a power assembly.

[0009] The present invention provides an auxiliary device for measuring the transition resistance of a gas pipeline flange, which further includes a sliding positioning component. The sliding positioning component includes a first support fixed to both sides of the annular component, and an arc-shaped guide rail is installed between the two first supports. The guide rail is located on the front side of the slide groove, and the slider passes through the guide rail. When the slider slides in an arc along the slide groove, it simultaneously slides in a reciprocating arc along the guide rail.

[0010] The present invention provides an auxiliary device for measuring the transition resistance of a gas pipeline flange, wherein the power component includes a transmission rod, one end of which is connected to the side wall of the bushing, and the other end of which is rotatably connected to a first connecting rod. The other end of the first connecting rod is rotatably connected to a power unit, and the power unit is mounted on a second support, which is mounted on the upper surface of the annular component.

[0011] The present invention provides an auxiliary device for measuring the transition resistance of a gas pipeline flange, wherein the filing assembly includes a first connecting seat, a file, and an air blowing pipe. The first connecting seat is fixed to the front surface of the turntable, the file is fixed to the outer end of the first connecting seat, and the air blowing pipe is fixed to the side wall of the first connecting seat. The opening of the air blowing pipe faces the cutting edge of the file, and the air blowing pipe is connected to one end of the gas transmission pipe.

[0012] The present invention provides an auxiliary device for measuring the transition resistance of a gas pipeline flange, wherein the coating assembly includes a second connecting seat, the second connecting seat is fixed to the front surface of the turntable, the second connecting seat is connected to a connecting seat through a connecting pipe, a brush is connected to the outer side wall of the connecting seat, the connecting pipe is connected to one end of a feeding pipe, and the other end of the feeding pipe is connected to a storage box for holding paint.

[0013] This invention discloses an auxiliary device for measuring the transition resistance of a gas pipeline flange, which further includes a pressurization component. The pressurization component includes a high-pressure gas supply component, which is connected to a sleeve via a supply pipe. The sleeve is mounted on an annular component. A first piston is slidably disposed within the inner cavity of the sleeve. The first piston is connected to one end of a sleeve rod. The other end of the sleeve rod extends out of the sleeve and is rotatably connected to a second connecting rod. The other end of the second connecting rod is rotatably connected to a transmission rod. A first one-way valve is disposed on the upper surface of the sleeve away from the sleeve rod. A second one-way valve is disposed on the sleeve near the end of the first one-way valve. The output port of the second one-way valve is connected to the supply pipe. A flow valve is disposed on the sleeve, and the output port of the flow valve is connected to the other end of the gas supply pipe.

[0014] The present invention provides an auxiliary device for measuring the transition resistance of a gas pipeline flange, wherein the high-pressure gas supply assembly includes a gas cylinder, the gas cylinder is connected to the storage box through a connecting pipe, and the gas cylinder is connected to the sleeve through a gas supply pipe.

[0015] The present invention provides an auxiliary device for measuring the transition resistance of a gas pipeline flange, wherein the bottom of the annular component is provided with a fixing seat, and the gas cylinder and the storage box are disposed on the fixing seat.

[0016] This invention discloses an auxiliary device for measuring the transition resistance of a gas pipeline flange, which further includes a feeding assembly. The feeding assembly includes a solenoid valve disposed at the end of the gas cylinder. The solenoid valve is connected to a storage box via a connecting pipe. A second piston is slidably disposed in the inner cavity of the storage box, dividing the inner cavity of the storage box into two regions. One region is filled with paint, and the other end of the feeding pipe is connected to this region. The other region is provided with multiple elastic elements, the two ends of which respectively abut against the second piston and the inner wall of the storage box.

[0017] The present invention provides an auxiliary device for measuring the transition resistance of a gas pipeline flange, which further includes a welding assembly. The welding assembly includes a third connecting seat, a soldering iron, and a winding reel. The third connecting seat is fixed to the front surface of the turntable. The third connecting seat, the first connecting seat, and the second connecting seat are evenly spaced along the circumference on the turntable. The soldering iron is provided at the outer end of the third connecting seat. The winding reel is rotatably connected to the third connecting seat.

[0018] The present invention provides an auxiliary device for measuring the transition resistance of a gas pipeline flange, which further includes a positioning and fastening assembly. The positioning and fastening assembly includes multiple lead screws. Multiple screw holes are provided circumferentially on the side wall of the annular assembly. The multiple lead screws pass through the multiple screw holes, and a fixing plate is provided at one end of each lead screw that extends into the inner cavity of the annular assembly. When the annular assembly is installed on the outer surface of the pipeline, the multiple fixing plates abut against the outer surface of the pipeline.

[0019] After adopting the above solution, the auxiliary device for measuring the transition resistance of a gas pipeline flange of the present invention has the following beneficial effects:

[0020] (1) Welding work is carried out on flange and wire by setting welding components on turntable, and painting work is carried out on the filing position and / or welding position of flange by setting coating components on turntable. After the resistance measurement is completed, the corresponding treatment can be carried out immediately. After the flange is painted, the damage to the flange paint surface caused by the transition resistance measurement work can be effectively avoided, thereby avoiding the corrosion of the flange.

[0021] (2) By setting up a pressurizing component and cooperating with the connecting component, the pressurizing component can be driven to work during the reciprocating motion of the connecting component. Part of the high-pressure gas generated by the pressurizing component is output through the air blowing pipe of the paint filing component, so that airflow is generated at the file position to blow away the filed paint and make it easier for the staff to observe the progress of the paint filing. The other part of the gas output through the air supply pipe enters the gas cylinder and is stored, so that the gas cylinder stores high-pressure gas, thereby realizing the supply of paint and facilitating the work of the coating component. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the transition resistance measurement auxiliary device for a gas pipeline flange according to the present invention;

[0023] Figure 2 yes Figure 1 A magnified schematic diagram of a portion of structure A;

[0024] Figure 3 This is a front view structural schematic diagram of an embodiment of the transition resistance measurement auxiliary device for a gas pipeline flange according to the present invention;

[0025] Figure 4 This is a schematic diagram of the connection structure between the turntable and the paint filing assembly, the coating assembly and the welding assembly of the present invention;

[0026] Figure 5 This is a three-dimensional structural schematic diagram of the coating component of the present invention;

[0027] Figure 6 This is a three-dimensional structural schematic diagram of the booster assembly of the present invention;

[0028] Figure 7 This is a three-dimensional structural diagram of the feeding assembly of the present invention.

[0029] Numbering Explanation:

[0030] 1-Turntable 2-Upper half ring

[0031] 3-Lower half ring body 4-First ear plate

[0032] 5-Second ear plate 6-Lead screw

[0033] 7-Fixed plate 8-Slider

[0034] 9-Connecting rod 10-Shaft sleeve

[0035] 11-First Spring 12-Slide Groove

[0036] 13-First support 14-Guide rail

[0037] 15-Transmission rod 16-First connecting rod

[0038] 17-Electric actuator 18-Second support

[0039] 19-First connecting seat 20-File

[0040] 21-Blow pipe 22-Gas delivery pipe

[0041] 23-Second connecting seat 24-Connecting pipe

[0042] 25-Connector 26-Brush

[0043] 27-Feed pipe 28-Storage box

[0044] 29-Gas cylinder 30-Connecting pipe

[0045] 31-Gas supply pipe 32-Sleeve

[0046] 33-Third support 34-First piston

[0047] 35-Club Sleeve 36-Second Link

[0048] 37-First check valve 38-Second check valve

[0049] 39-Flow valve 40-Fixed seat

[0050] 41-Solenoid valve 42-Second piston

[0051] 43-Second spring 44-Third connecting seat

[0052] 45- Soldering iron 46- Reel Detailed Implementation

[0053] The present invention will now be described with reference to the embodiments shown in the accompanying drawings. The embodiments disclosed herein are illustrative in all respects and are not intended to be limiting. The scope of the invention is not limited by the following description of the embodiments, but only by the scope of the claims, and includes all modifications having the same meaning as and within the scope of the claims.

[0054] The structure of an auxiliary device for measuring the transition resistance of a gas pipeline flange according to the present invention is described below with reference to specific embodiments.

[0055] like Figures 1-3 The diagram shown is a three-dimensional, front view structural schematic of an embodiment of the auxiliary device for measuring the transition resistance of a gas pipeline flange according to the present invention. It includes an annular assembly, a connecting assembly, a power assembly, a turntable 1, a paint filing assembly, a coating assembly, and a welding assembly mounted on the turntable 1. The paint filing assembly is used to file off the paint from the flange surface, the welding assembly is used to weld the flange and the wire, and the coating assembly is used to apply paint to the filed and / or welded areas of the flange. This allows for immediate processing after the resistance measurement is completed, and the painting of the flange effectively prevents damage to the flange paint surface caused by the transition resistance measurement work, thereby preventing flange corrosion.

[0056] The annular assembly is used to install on the outer surface of the gas pipeline, and the connecting assembly is slidably connected to the arc-shaped side of the annular assembly. Specifically, the annular assembly includes an upper annular body 2 and a lower annular body 3 arranged vertically, with the two annular bodies symmetrically positioned vertically. The left ends of the upper annular body 2 and the lower annular body 3 each have a first ear plate 4 extending outwards, and the right ends of the upper annular body 2 and the lower annular body 3 each have a second ear plate 5 extending outwards horizontally. The left ends of the upper annular body 2 and the lower annular body 3 are hinged together by a pin, and the right ends of the upper annular body 2 and the lower annular body 3 are bolted together with two second ear plates 5. In this embodiment, the upper annular body 2 and the lower annular body 3 are connected to form a circular shape.

[0057] A positioning and fastening assembly is also provided on the annular assembly. The positioning and fastening assembly includes multiple screw rods 6. Multiple screw holes are provided circumferentially on the side walls of the upper half ring 2 and the lower half ring 3. The multiple screw rods 6 pass through the multiple screw holes, and a fixing plate 7 is provided at the end of each screw rod 6 that extends into the inner cavity of the annular assembly. When the annular assembly is installed on the outer surface of the pipe, the multiple fixing plates 7 abut against the outer surface of the pipe.

[0058] The connecting assembly includes a slider 8, a connecting rod 9, a bushing 10, a first spring 11, and a sliding positioning assembly. In this embodiment, the slider 8 is a rectangular block, and an arc-shaped groove 12 is provided circumferentially at the center of the front surface of the upper half-ring 2. The slider 8 is slidably mounted on the groove 12. The sliding positioning assembly includes first supports 13 horizontally arranged on the left and right sides of the front surface of the upper half-ring 2. The first supports 13 are horizontal plates. An arc-shaped guide rail 14 is installed between the two first supports 13. The guide rail 14 is located directly in front of the groove 12. The slider 8 passes through the guide rail 14. When the slider 8 reciprocates along the groove 12, it simultaneously reciprocates along the guide rail 14. The guide rail 14 serves as a guide and support. The bushing 10 is vertically arranged, and the rear surface of the bushing 10 is fixedly connected to the front surface of the slider 8. In this embodiment, the connecting rod 9 is T-shaped and slides downward through the inner cavity of the bushing 10. A first spring 11 is provided at the upper end of the bushing 10 and is mounted on the connecting rod 9. The upper end of the first spring 11 is fixed to the upper end of the connecting rod 9. The lower end of the connecting rod 9 is rotatably connected to the turntable 1 via a pin. In this embodiment, the turntable 1 is fixed to the lower end of the front surface of the connecting rod 9. The rear sidewall of the bushing 10 is connected to the power assembly.

[0059] The power assembly includes a transmission rod 15. One end of the transmission rod 15 is perpendicularly connected to the rear side wall of the bushing 10, and the other end of the transmission rod 15 is rotatably connected to one end of the first connecting rod 16. The transmission rod 15 and the first connecting rod 16 are arranged perpendicularly. The other end of the first connecting rod 16 is connected to the power unit. In this embodiment, the power unit is an electric push rod 17. The telescopic end of the electric push rod 17 is rotatably connected to the first connecting rod 16 via a pin. The electric push rod 17 is fixed to a second support 18, which is vertically fixed to the right side of the upper surface of the upper half-ring 2. When the electric push rod 17 is working, during its extension and retraction, through the transmission of the first connecting rod 16 and the transmission rod 15, the slider 8 on the bushing 10 can slide in an arc along the slide groove 12. The arc-shaped guide rail 14 provides auxiliary support for the slider 8, enabling the bushing 10 to perform arc-shaped reciprocating motion.

[0060] refer to Figure 4 As shown, the front surface of the turntable 1 is evenly spaced circumferentially with a paint filing assembly, a welding assembly, and a coating assembly. The paint filing assembly includes a first connecting seat 19, a file 20, and two air pipes 21. The first connecting seat 19 is fixed to the front surface of the turntable 1 near its outer edge, and the file 20 is fixed to the outer end of the first connecting seat 19 (e.g., ...). Figure 1 (at the lower end of the middle), two air blowing pipes 21 are fixed on the left and right side walls of the first connecting seat 19, the openings of the two air blowing pipes 21 face the cutting edge of the file 20, and the air blowing pipes 21 are connected to one end of the air supply pipe 22.

[0061] refer to Figure 5As shown, the coating assembly includes a second connecting seat 23, a connecting pipe 24, a connecting seat 25, a brush 26, a pressurizing assembly, and a feeding assembly. The second connecting seat 23 is fixed to the front surface of the turntable 1 near the outer edge. The outer end of the second connecting seat 23 is connected to the connecting pipe 24, and the other end of the connecting pipe 24 is connected to the connecting seat 25. The outer wall of the connecting seat 25 is connected to the brush 26. In this embodiment, the connecting seat 25 has a porous structure. The connecting pipe 24 is connected to one end of the feeding pipe 27, and the other end of the feeding pipe 27 is connected to the storage box 28 for holding paint.

[0062] The booster assembly and the connecting assembly constitute a transmission connection. (Reference) Figure 6 As shown, the pressurization assembly includes a high-pressure gas supply assembly, which includes a gas cylinder 29. The gas cylinder 29 is connected to a storage box 28 via a connecting pipe 30. The gas cylinder 29 is also connected to a horizontally placed sleeve 32 via a supply pipe 31. The sleeve 32 is mounted on a third support 33, which is vertically mounted on the left side of the upper surface of the upper half-ring 2. A first piston 34 is slidably disposed in the inner cavity of the sleeve 32. The right surface of the first piston 34 is connected to a sleeve rod 35. The right end of the sleeve rod 35 extends out of the sleeve 32 and is rotatably connected to a second connecting rod 36 via a pin. The right end of the second connecting rod 36 is rotatably connected to a transmission rod 15. A first one-way valve 37 is disposed on the left side of the upper surface of the sleeve 32, and a second one-way valve 38 is disposed on the left end of the sleeve 32. Both the first one-way valve 37 and the second one-way valve 38 are connected to the sleeve 32. The output port of the second one-way valve 38 is connected to the gas supply pipe 31. A flow valve 39 is installed on the sleeve 32, and the output port of the flow valve 39 is connected to the other end of the gas supply pipe 22. The gas cylinder 29 and the storage box 28 are arranged vertically on the fixed base 40, which is located at the bottom of the lower half of the ring body 3.

[0063] During the reciprocating motion of the transmission rod 15, the pressurization assembly drives the first piston 34 to reciprocate within the sleeve 32 via the second connecting rod 36 and the sleeve rod 35. This causes the volume of the space to the left of the first piston 34 in the sleeve 32 to increase and decrease. When the volume of the space increases, external gas enters the space through the first one-way valve 37. When the volume of the space decreases, some gas is output through the flow valve 39 and the gas delivery pipe 22, while the other part of the gas is input into the gas cylinder 29 through the second one-way valve 38 and the gas supply pipe 31 and stored therein, resulting in high-pressure gas inside the gas cylinder 29.

[0064] refer to Figure 7As shown, the feeding assembly includes a solenoid valve 41 located at the right end of the gas cylinder 29. The solenoid valve 41 is connected to the storage box 28 via a connecting pipe 30. A second piston 42 is slidably disposed in the inner cavity of the storage box 28. The second piston 42 divides the inner cavity of the storage box 28 into two regions. The left region is used for filling paint. The other end of the feeding pipe 27 is connected to the left region. Multiple elastic elements are disposed in the right region of the storage box 28. In this embodiment, the elastic elements are second springs 43. The left and right ends of the multiple second springs 43 respectively abut against the second piston 42 and the right inner wall of the storage box 28.

[0065] When the coating assembly is in operation, the turntable 1 is rotated to align the brush 26 with the filing or welding position. The solenoid valve 41 is turned on, allowing the high-pressure gas in the gas cylinder 29 to enter the storage box 28 through the solenoid valve 41 and the connecting pipe 30. This pushes the second piston 42 to move, squeezing the paint in the storage box 28 and allowing the paint to be transported through the feed pipe 27 to the connecting pipe 24. The paint then enters the connecting seat 25 through the connecting pipe 24 and seeps out through the porous structure of the connecting seat 25, allowing the paint to adhere to the brush 26. By moving the brush 26 on the flange surface, the paint is applied to the flange surface, completing the coating work.

[0066] The welding assembly includes a third connecting seat 44, a soldering iron 45, and a take-up reel 46. The third connecting seat 44 is fixed to the front surface of the turntable 1 near the outer edge. The third connecting seat 44, the first connecting seat 19, and the second connecting seat 23 are evenly spaced on the front surface of the turntable 1. The soldering iron 45 is fixed to the outer end of the third connecting seat 44. The take-up reel 46 is rotatably connected to the third connecting seat 44 by a pin.

[0067] When the welding assembly is in operation, rotate turntable 1, align the soldering iron 45 on turntable 1 with the filing position, and pull out the welding wire from the take-up reel 46 to perform welding on the wire and flange.

[0068] In use, the two annular assemblies of the auxiliary device of this invention are installed on the pipes on both sides of the flange. One end of the upper half ring 2 and the lower half ring 3 of each annular assembly is rotated open, and then the upper half ring 2 and the lower half ring 3 are rotated to wrap around the pipe. The other ends of the upper half ring 2 and the lower half ring 3 are then connected and fixed with bolts. Afterwards, the lead screw 6 is rotated to engage with the screw hole on the upper half ring 2 or the lower half ring 3, causing the lead screw 6 to move into the inner cavity of the annular assembly, thereby driving the fixing plate 7 closer to the pipe. Through the contact between the fixing plate 7 and the pipe, the upper half ring 2 and the lower half ring 3 are fixed to the pipe.

[0069] Then, the turntable 1 is rotated so that the file 20 of the paint filing assembly is attached to the flange surface. The turntable 1 is then fixed. Under the action of the first spring 11, the connecting rod 9 is driven to slide up and down along the inner cavity of the bushing 10, thereby causing the file 20 to contact the flange. The electric push rod 17 is then activated. During the extension and retraction process, the electric push rod 17, through the transmission of the first connecting rod 16 and the transmission rod 15, causes the slider 8 on the bushing 10 to slide along the slide groove 12. With the auxiliary support of the arc-shaped guide rail 14, the bushing 10 can perform arc-shaped reciprocating motion, thereby driving the file 20 to reciprocate on the flange surface. The file 20 is used to file off the paint on the flange surface, making it easier for the wires to make an electrical connection with the flange. During the reciprocating motion of the transmission rod 15, the first piston 34 is driven to reciprocate in the sleeve 32 via the second connecting rod 36 and the sleeve rod 35. This causes the volume of the space to the left of the first piston 34 in the sleeve 32 to increase and decrease. When the volume of the space increases, external gas enters the space through the first one-way valve 37. When the volume of the space decreases, some gas is output through the flow valve 39 and the gas supply pipe 22, and another part of the gas is output through the second one-way valve 38 and the gas supply pipe 31. The gas output from the gas supply pipe 22 enters the two blowing pipes 21 and is output from the blowing pipes 21, which generates airflow at the blade of the file 20 to blow away the paint that has been filed off, making it easier for the staff to observe the progress of the paint filing. The gas output through the gas supply pipe 31 enters the gas cylinder 29 and is stored, so that there is high-pressure gas inside the gas cylinder 29.

[0070] After the paint is applied, the transition resistance of the paint-applied areas at both ends of the flange is measured using a detection probe. The detection probe is clamped and fixed between the file and the flange. When the resistance measurement at both ends of the flange meets the requirements, the flange surface is directly painted. If the resistance measurement fails, the wire is placed at the paint-applied position, the turntable 1 is rotated, the soldering iron 45 on the turntable 1 is aligned with the paint-applied position, and the welding wire is pulled out from the take-up reel 46 to weld the wire and the flange. After welding, the flange also needs to be painted.

[0071] During the painting process, the turntable 1 is rotated, and the brush 26 is aligned with the filing and / or welding positions. The solenoid valve 41 is turned on, allowing the high-pressure gas in the gas cylinder 29 to enter the storage box 28 through the solenoid valve 41 and the connecting pipe 30. This pushes the second piston 42 to move, squeezing the paint in the storage box 28. The paint is then transported through the feed pipe 27 to the connecting pipe 24, and then through the connecting pipe 24 into the connecting seat 25. The paint seeps out through the porous structure of the connecting seat 25, allowing it to adhere to the brush 26. By moving the brush 26 on the flange surface, the paint is applied to the flange surface, completing the painting process.

[0072] The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A transition resistance measurement aid for a gas pipeline flange, characterized by, The application relates to a paint scraping and coating device for flanges, which comprises a ring assembly, a connecting assembly, a power assembly, a rotating disc, a paint scraping assembly and a coating assembly. The ring assembly comprises two half-ring bodies arranged in a vertical mode, one end of each half-ring body is rotatably connected, and the other end of each half-ring body is fixedly connected through a connecting piece. The connecting assembly comprises a sliding block, a connecting rod, a shaft sleeve and a first spring, the front surface of the upper half-ring body is provided with an arc-shaped sliding groove in a circumferential mode, the sliding block is slidably arranged on the sliding groove, the outer surface of the shaft sleeve is connected with the front surface of the sliding block, the connecting rod is slid downward through the inner cavity of the shaft sleeve, the upper end of the shaft sleeve is provided with the first spring, the first spring is arranged on the connecting rod, the upper end of the first spring is fixed to the upper end of the connecting rod, the lower end of the connecting rod is rotatably connected with the rotating disc, and the side wall of the shaft sleeve is connected with the power assembly. The power assembly comprises a transmission rod, one end of the transmission rod is connected with the side wall of the shaft sleeve, the other end of the transmission rod is rotatably connected with a first connecting rod, the other end of the first connecting rod is rotatably connected with a power part, the power part is arranged on a second support, and the second support is arranged on the upper surface of the ring assembly.

2. A transition resistance measurement aid for a gas pipe flange as claimed in claim 1, characterised in that, The device further comprises a sliding positioning assembly, the sliding positioning assembly comprises first supports fixed to the two side portions of the ring assembly, an arc-shaped guide rail is arranged between the two first supports, the guide rail is located on the front side of the sliding groove, the sliding block passes through the guide rail, and when the sliding block slides along the sliding groove in an arc mode, the sliding block synchronously slides along the guide rail in a reciprocating arc mode.

3. A transition resistance measurement aid for a gas pipe flange as claimed in claim 1, characterised in that, The paint scraping assembly comprises a first communicating seat, a scraper and a blowing pipe, the first communicating seat is fixed to the front surface of the rotating disc, the scraper is fixed to the outer side end of the first communicating seat, the blowing pipe is fixed to the side wall of the first communicating seat, the pipe opening of the blowing pipe faces the blade opening part of the scraper, and the blowing pipe is communicated with one end of a gas conveying pipe.

4. A transition resistance measurement aid for a gas pipe flange as claimed in claim 3, characterised in that, The coating assembly comprises a second communicating seat, the second communicating seat is fixed to the front surface of the rotating disc, the second communicating seat is connected with a connecting seat through a communicating pipe, the outer side wall of the connecting seat is communicated with a brush, the communicating pipe is communicated with one end of a feeding pipe, and the other end of the feeding pipe is communicated with a storage box for placing paint.

5. A transition resistance measuring aid for a gas pipe flange as claimed in claim 4, characterised in that It also includes a pressurization component, which includes a high-pressure gas supply component. The high-pressure gas supply component is connected to a sleeve via a supply pipe. The sleeve is mounted on the annular component. A first piston is slidably disposed in the inner cavity of the sleeve. The first piston is connected to one end of a sleeve rod. The other end of the sleeve rod extends out of the sleeve and is rotatably connected to a second connecting rod. The other end of the second connecting rod is rotatably connected to a transmission rod. A first one-way valve is disposed on the upper surface of the sleeve away from the sleeve rod. A second one-way valve is disposed on the sleeve near the end of the first one-way valve. The output port of the second one-way valve is connected to the supply pipe. A flow valve is disposed on the sleeve, and the output port of the flow valve is connected to the other end of the gas supply pipe.

6. A transition resistance measuring aid for a gas pipe flange as claimed in claim 5, characterised in that The high-pressure gas supply assembly includes a gas cylinder, which is connected to the storage box via a connecting pipe, and the gas cylinder is connected to the sleeve via a gas supply pipe.

7. A transition resistance measuring aid for a gas pipe flange as claimed in claim 6, characterised in that The bottom of the annular component is provided with a fixing base, and the gas cylinder and the storage box are disposed on the fixing base.

8. A transition resistance measuring aid for a gas pipe flange as claimed in claim 6, characterized in that It also includes a feeding assembly, which includes a solenoid valve disposed at the end of the gas cylinder. The solenoid valve is connected to the storage box through the connecting pipe. A second piston is slidably disposed in the inner cavity of the storage box. The second piston divides the inner cavity of the storage box into two areas. One area is filled with paint. The other end of the feeding pipe is connected to this area. Multiple elastic elements are disposed in the other area. The two ends of the multiple elastic elements respectively abut against the second piston and the inner wall of the storage box.

9. A transition resistance measuring aid for a gas pipe flange as claimed in claim 4, characterized in that It also includes a welding assembly, which includes a third connecting seat, a soldering iron, and a take-up reel. The third connecting seat is fixed to the front surface of the turntable. The third connecting seat, the first connecting seat, and the second connecting seat are evenly spaced along the circumference on the turntable. The outer end of the third connecting seat is provided with a soldering iron. The take-up reel is rotatably connected to the third connecting seat.

10. A transition resistance measuring aid for a gas pipe flange as claimed in claim 1, characterized in that It also includes a positioning and fastening assembly, which includes multiple lead screws. Multiple screw holes are provided circumferentially on the side wall of the annular assembly. The multiple lead screws pass through the multiple screw holes, and a fixing plate is provided at one end of each lead screw that extends into the inner cavity of the annular assembly. When the annular assembly is installed on the outer surface of the pipe, the multiple fixing plates abut against the outer surface of the pipe.

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