Auxiliary device for measuring transition resistance of gas pipeline flange

Abstract

The invention discloses a gas pipeline flange transition resistance measurement auxiliary device, which comprises an annular assembly, a connecting assembly, a power assembly, a turntable, a paint filing assembly and a coating assembly, the paint filing assembly and the coating assembly are mounted on the turntable, the annular assembly is used for being mounted on the outer surface of a pipeline, and the connecting assembly is in sliding connection with the arc-shaped side surface of the annular assembly; one end of the connecting assembly is connected with the power assembly, the other end of the connecting assembly is rotatably connected with the rotary disc, the paint filing assembly and the coating assembly are installed on the rotary disc at intervals, and the power assembly can drive the connecting assembly to do arc-shaped motion along the annular assembly and drive the paint filing assembly to do reciprocating motion along the surface of the flange. And the paint on the surface of the flange is filed to measure the transition resistance. According to the invention, the flange and the wire can be automatically welded, the paint filing position or the welding position on the flange can be automatically painted, corresponding treatment can be immediately carried out after the resistance is measured, the damage to the paint surface of the flange caused by the transition resistance measurement work can be effectively avoided, and the corrosion of the flange is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of gas pipeline flange auxiliary equipment, in particular to a transition resistance measurement auxiliary device for a gas pipeline flange. Background Art

[0002] When the transition resistance of the elbow, valve, flange and other joints of long metal objects is greater than 0.03 ohms, the joints should be bridged with metal wires. For flanges with no less than 5 bolts, no bridge is required in a non-corrosive environment. After the pipeline is laid, in order to ensure the safety of material transportation, the transition resistance of the flange needs to be measured.

[0003] In the prior art, when measuring the transition resistance of the flange, it is necessary to use a file to file off the paint on the two sides of the flange, and then use the detection equipment to measure the transition resistance. After the measurement, if it is unqualified, the wire welding work needs to be performed. After welding or measurement, the filed paint position needs to be painted, otherwise the flange will rust and corrode. In the prior art, most of the detection equipment cannot process the filed paint position, resulting in other staff members needing to repair the flange.

[0004] How to design a transition resistance measurement auxiliary device for a gas pipeline flange that can solve the above technical problems is a subject that the inventor has devoted himself to studying. Summary of the invention

[0005] The purpose of the present invention is to provide a transition resistance measurement auxiliary device for a gas pipeline flange, which can automatically weld the flange and the wire, and automatically paint the filed paint position and / or welding position on the flange. The resistance can be immediately processed accordingly after the measurement, which can effectively avoid damage to the paint surface of the flange due to the transition resistance measurement work and avoid corrosion of the flange.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention is: a transition resistance measurement auxiliary device for a gas pipeline flange, which includes an annular component, a connecting component, a power component, a turntable, a paint filing component and a coating component installed on the turntable, the annular component is used to be installed on the outer surface of the pipeline, the connecting component is slidingly connected to the arc-shaped side surface of the annular component, one end of the connecting component is connected to the power component, and the other end of the connecting component is rotatably connected to the turntable, the paint filing component and the coating component are installed on the turntable at intervals, the power component can drive the connecting component to make an arc motion along the annular component, and drive the paint filing component to reciprocate along the flange surface to file off the paint on the flange surface for transition resistance measurement.

[0007] The present invention provides a transition resistance measurement auxiliary device for a gas pipeline flange, wherein the annular component includes two semi-ring bodies arranged up and down, one end of the two semi-ring bodies are rotatably connected, and the other ends of the two semi-ring bodies are connected and fixed by a connecting piece, and the two semi-ring bodies are connected to form a ring.

[0008] The present invention provides a transition resistance measurement auxiliary device for a gas pipeline flange, wherein the connecting assembly includes a slider, a connecting rod, a sleeve and a first spring, the front surface of the semi-ring body located at the upper part is circumferentially provided with an arc-shaped slide groove, the slider is slidably arranged on the slide groove, the outer surface of the sleeve is connected to the front surface of the slider, the connecting rod slides downward through the inner cavity of the sleeve, the upper end of the sleeve is provided with the first spring, the first spring is installed 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 to the turntable, and the side wall of the sleeve is connected to the power assembly.

[0009] The present invention provides a transition resistance measurement auxiliary device for a gas pipeline flange, which also includes a sliding positioning component, wherein the sliding positioning component includes a first support fixed to two sides of an annular component, an arc guide rail is installed between the two first supports, the guide rail is located at the front side of the slide groove, the slider is inserted into the guide rail, and when the slider slides in an arc shape along the slide groove, it synchronously slides back and forth in an arc shape along the guide rail.

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

[0011] The present invention provides an auxiliary device for measuring transition resistance of a gas pipeline flange, wherein the paint 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, the air blowing pipe is fixed to the side wall of the first connecting seat, the pipe opening of the air blowing pipe faces the blade of the file, and the air blowing pipe is connected to one end of the gas supply pipe.

[0012] The present invention provides an auxiliary device for measuring 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 the connecting seat through a connecting pipe, the outer side wall of the connecting seat is connected with a brush, the connecting pipe is connected to one end of a feed pipe, and the other end of the feed pipe is connected to a storage box for placing paint.

[0013] The present invention provides a transition resistance measurement auxiliary device for a gas pipeline flange, which also includes a booster component, the booster component includes a high-pressure gas supply component, the high-pressure gas supply component is connected to a sleeve through a gas supply pipe, the sleeve is installed on the annular component, a first piston is slidably provided 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 is rotatably connected to a second connecting rod after extending out of the sleeve, the other end of the second connecting rod is rotatably connected to the transmission rod, a first one-way valve is provided on the side of the upper surface of the sleeve away from the sleeve rod, a second one-way valve is provided on the end of the sleeve close to the first one-way valve, the output port of the second one-way valve is connected to the gas supply pipe, a flow valve is provided 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 a transition resistance measurement auxiliary device for a gas pipeline flange, wherein the high-pressure gas supply assembly comprises 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 a transition resistance measurement auxiliary device for a gas pipeline flange, wherein a fixing seat is arranged at the bottom of the annular component, and the gas cylinder and the storage box are arranged on the fixing seat.

[0016] The present invention provides a transition resistance measurement auxiliary device for a gas pipeline flange, which also includes a feeding assembly, wherein the feeding assembly includes a solenoid valve arranged at the end of the gas cylinder, the solenoid valve is connected to the storage box through the connecting pipe, and a second piston is slidably arranged in the inner cavity of the storage box, and the second piston divides the inner cavity of the storage box into two areas, one of which is filled with paint, and the other end of the feeding pipe is connected to the area, and a plurality of elastic elements are arranged in the other area, and the two ends of the plurality of elastic elements respectively abut against the second piston and the inner wall of the storage box.

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

[0018] The present invention provides a transition resistance measurement auxiliary device for a gas pipeline flange, which also includes a positioning and fastening component, wherein the positioning and fastening component includes a plurality of screw rods, a plurality of screw holes are circumferentially arranged on the side wall of the annular component, the plurality of screw rods are inserted into the plurality of screw holes, and a fixing plate is arranged at one end of each screw rod extending into the inner cavity of the annular component. When the annular component is installed on the outer surface of the pipeline, the plurality of fixing plates abut against the outer surface of the pipeline.

[0019] After adopting the above scheme, the transition resistance measurement auxiliary device of the gas pipeline flange of the present invention has the following beneficial effects:

[0020] (1) By arranging a welding assembly on the turntable to weld the flange and the wire, and by arranging a coating assembly on the turntable to paint the filing position and / or welding position of the flange, corresponding processing can be performed immediately after the resistance measurement is completed, and after the flange is painted, damage to the flange paint surface caused by the transition resistance measurement can be effectively avoided, thereby avoiding corrosion of the flange.

[0021] (2) By setting up a booster assembly and cooperating with the connecting assembly, the booster assembly can be driven to work during the reciprocating motion of the connecting assembly. Part of the high-pressure gas generated by the booster assembly is output through the air blowing pipe of the paint filing assembly, so that airflow is generated at the file position to blow away the paint filed, making it easier for workers 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 high-pressure gas is stored inside the gas cylinder, thereby realizing the paint supply and facilitating the operation of the coating assembly. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 2 yes Figure 1 Schematic diagram of the local A enlarged structure;

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

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

[0026] Figure 5 is a schematic diagram of the three-dimensional structure of the coating assembly of the present invention;

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

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the feeding assembly of the present invention.

[0029] Number Description:

[0030] 1- turntable 2- upper half ring

[0031] 3-lower half ring body 4-first ear plate

[0032] 5-Second ear plate 6-Screw rod

[0033] 7-Fixed plate 8-Slider

[0034] 9-Connecting rod 10-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 push rod 18- Second support

[0039] 19-first connecting seat 20-file

[0040] 21-air blowing pipe 22-air delivery pipe

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

[0042] 25-Connecting seat 26-Brush

[0043] 27-feeding pipe 28-storage box

[0044] 29-gas cylinder 30-connecting pipe

[0045] 31-air supply pipe 32-sleeve

[0046] 33- third support 34- first piston

[0047] 35- sleeve rod 36- second connecting rod

[0048] 37-First one-way valve 38-Second one-way 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- Electric soldering iron 46- Reel DETAILED DESCRIPTION

[0053] The present invention is described below based on the embodiments shown in the accompanying drawings. The embodiments disclosed this time can be considered to be illustrative in all aspects and not restrictive. The scope of the present invention is not limited by the description of the following embodiments, but is only shown by the scope of the claims, and includes all modifications with the same meaning as the scope of the claims and within the scope of the claims.

[0054] The structure of a transition resistance measurement auxiliary device for a gas pipeline flange of the present invention is described below in conjunction with specific embodiments.

[0055] like Figure 1-Figure 3 The three-dimensional, front view structural diagram of an embodiment of a transition resistance measurement auxiliary device for a gas pipeline flange of the present invention is shown, comprising an annular component, a connection component, a power component, a turntable 1, a paint filing component, a coating component and a welding component installed on the turntable 1. The paint filing component is used to file the paint on the surface of the flange, the welding component is used to weld the flange and the wire, and the coating component is used to paint the filed paint position and / or the welding position of the flange. After the resistance measurement is completed, the corresponding processing can be carried out immediately, and after the flange is painted, the paint surface of the flange can be effectively avoided from being damaged due to the transition resistance measurement work, thereby avoiding the corrosion of the flange.

[0056] The annular component is used to be installed on the outer surface of the gas pipeline, and the connecting component is slidably connected to the arc-shaped side surface of the annular component. Specifically, the annular component includes an upper semi-ring body 2 and a lower semi-ring body 3 arranged in an upper and lower position, and the two semi-ring bodies are symmetrical in an upper and lower position. The left ends of the upper semi-ring body 2 and the lower semi-ring body 3 respectively extend outward with a first ear plate 4, and the right ends of the upper semi-ring body 2 and the lower semi-ring body 3 respectively extend outward in a horizontal direction with a second ear plate 5. The left ends of the upper semi-ring body 2 and the lower semi-ring body 3 are hinged together with the two first ear plates 4 through a pin, and the right ends of the upper semi-ring body 2 and the lower semi-ring body 3 are screwed and fixed with two second ear plates 5 through bolts. In this embodiment, the upper semi-ring body 2 and the lower semi-ring body 3 are connected to form a circular ring.

[0057] A positioning and fastening assembly is also provided on the annular assembly. The positioning and fastening assembly includes a plurality of screw rods 6. A plurality of screw holes are provided on the side walls of the upper half annular body 2 and the lower half annular body 3 along the circumferential direction. The plurality of screw rods 6 are inserted into the plurality of screw holes. A fixing plate 7 is provided at one end of each screw rod 6 extending into the inner cavity of the annular assembly. When the annular assembly is installed on the outer surface of the pipeline, the plurality of fixing plates 7 abut against the outer surface of the pipeline.

[0058] The connecting assembly includes a slider 8, a connecting rod 9, a sleeve 10, a first spring 11 and a sliding positioning assembly. The slider 8 of this embodiment is a rectangular block. An arc-shaped slide groove 12 is circumferentially arranged in the middle of the front surface of the upper semi-ring body 2, and the slider 8 is slidably arranged on the slide groove 12. The sliding positioning assembly includes a horizontally arranged first support 13 fixed to the left and right sides of the front surface of the upper semi-ring body 2, and the first support 13 is a horizontal plate. An arc-shaped guide rail 14 is installed between the two first supports 13. The guide rail 14 is located on the front side of the slide groove 12. The slider 8 is inserted on the guide rail 14. When the slider 8 reciprocates along the slide groove 12, it simultaneously reciprocates along the guide rail 14. The guide rail 14 plays a guiding and supporting role. The sleeve 10 is arranged vertically, and the rear surface of the sleeve 10 is fixedly connected to the front surface of the slider 8. The connecting rod 9 of this embodiment is T-shaped, and the connecting rod 9 slides from top to bottom through the inner cavity of the sleeve 10. The upper end of the sleeve 10 is provided with a first spring 11, which is installed 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 through a pin shaft. In this embodiment, the turntable 1 is fixed to the lower end of the front surface of the connecting rod 9. The rear side wall of the sleeve 10 is connected to the power assembly.

[0059] The power assembly includes a transmission rod 15, one end of which is vertically connected to the rear side wall of the sleeve 10, and the other end of which is rotatably connected to one end of the first connecting rod 16. The transmission rod 15 and the first connecting rod 16 are vertically arranged, and the other end of the first connecting rod 16 is connected to the power unit. The power unit of this embodiment adopts an electric push rod 17. The telescopic end of the electric push rod 17 is rotatably connected to the first connecting rod 16 through a pin shaft. The electric push rod 17 is fixed on the second support 18, and the second support 18 is vertically fixed to the right side of the upper surface of the upper semi-ring body 2. When the electric push rod 17 is working, during the telescopic process, the first connecting rod 16 and the transmission rod 15 can drive the slider 8 on the sleeve 10 to slide in an arc along the slide groove 12, and the sleeve 10 can perform an arc reciprocating motion through the auxiliary support of the arc guide rail 14 to the slider 8.

[0060] refer to Figure 4 As shown, the front surface of the turntable 1 is evenly spaced along the circumference and connected 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 blowing pipes 21. The first connecting seat 19 is fixed to the front surface of the turntable 1 near the outer edge, and the file 20 is fixed to the outer end of the first connecting seat 19 (such as Figure 1 The two air blowing pipes 21 are fixed on the left and right side walls of the first connecting seat 19, and the pipe openings of the two air blowing pipes 21 face the blade 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, 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, and the connecting seat 25 of this embodiment is 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 placing paint.

[0062] The booster assembly and the connecting assembly form a transmission fit. Figure 6 As shown, the booster assembly includes a high-pressure gas supply assembly, which includes a gas cylinder 29, which is connected to a storage box 28 through a connecting pipe 30, and is connected to a horizontally placed sleeve 32 through a gas supply pipe 31. The sleeve 32 is mounted on a third support 33, and the third support 33 is vertically mounted on the left side of the upper surface of the upper semi-ring body 2. A first piston 34 is slidably arranged in the inner cavity of the sleeve 32, and the right surface of the first piston 34 is connected to a sleeve rod 35. After the right end of the sleeve rod 35 extends out of the sleeve 32, it is rotatably connected to a second connecting rod 36 through a pin shaft, and the right end of the second connecting rod 36 is rotatably connected to the transmission rod 15. A first one-way valve 37 is arranged on the left side of the upper surface of the sleeve 32, and a second one-way valve 38 is arranged on the left end of the sleeve 32. The first one-way valve 37 and the second one-way valve 38 are both connected to the sleeve 32. The output port of the second one-way valve 38 is connected to the gas supply pipe 31, and a flow valve 39 is provided 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 on a fixing seat 40 in an upper and lower manner, and the fixing seat 40 is arranged at the bottom of the lower semi-ring body 3.

[0063] During the reciprocating motion of the transmission rod 15, the booster assembly drives the first piston 34 to reciprocate in the inner cavity of the sleeve 32 through the second connecting rod 36 and the sleeve rod 35, thereby increasing and decreasing the volume of the space on the left side of the first piston 34 in the sleeve 32. 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, part of the gas is output through the flow valve 39 and the gas supply pipe 22, and 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 is stored, so that high-pressure gas exists inside the gas cylinder 29.

[0064] refer to Figure 7As shown, the feeding assembly includes a solenoid valve 41 arranged at the right end of the gas cylinder 29, and the solenoid valve 41 is connected to the storage box 28 through the connecting pipe 30. A second piston 42 is slidably arranged in the inner cavity of the storage box 28. The second piston 42 divides the inner cavity of the storage box 28 into two areas. The left area is used to fill the paint. The other end of the feeding pipe 27 is connected to the left area. A plurality of elastic elements are arranged in the right area of ​​the storage box 28. The elastic element of this embodiment adopts a second spring 43. The left and right ends of the plurality of 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 working, rotate the turntable 1, align the brush 26 with the paint filing position or the welding position, turn on the switch of the solenoid valve 41, so that the high-pressure gas in the gas cylinder 29 enters the storage box 28 through the solenoid valve 41 and the connecting pipe 30, and then pushes the second piston 42 to move, squeezes the paint in the storage box 28, and makes the paint be transported to the connecting pipe 24 through the feeding pipe 27, and then enters the connecting seat 25 through the connecting pipe 24, and seeps out through the porous structure of the connecting seat 25, so that the paint adheres to the brush 26, and the paint is coated on the flange surface by the movement of the brush 26 on the flange surface, completing the painting work.

[0066] The welding assembly includes a third connecting seat 44, an electric soldering iron 45 and a winding 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 and the first connecting seat 19 and the second connecting seat 23 are evenly spaced on the front surface of the turntable 1. The electric soldering iron 45 is fixed to the outer end of the third connecting seat 44, and the winding reel 46 is rotatably connected to the third connecting seat 44 through a pin shaft.

[0067] When the welding assembly is working, the turntable 1 is rotated, the electric soldering iron 45 on the turntable 1 is aligned with the paint filing position, and the welding wire is drawn out from the winding reel 46 to weld the wire and the flange.

[0068] When in use, two annular components of the auxiliary device of the present invention are installed on the pipes on both sides of the flange, one end of the upper half ring body 2 and the lower half ring body 3 of each annular component is rotated to open, and then the upper half ring body 2 and the lower half ring body 3 are rotated to wrap the pipe, and the other ends of the upper half ring body 2 and the lower half ring body 3 are connected and fixed by bolts. Then, the screw rod 6 is rotated to match the screw holes on the upper half ring body 2 or the lower half ring body 3, so that the screw rod 6 moves toward the inner cavity of the annular component, and then drives the fixing plate 7 to approach the pipe, and the fixing work between the upper half ring body 2 and the lower half ring body 3 and the pipe is achieved through the interference between the fixing plate 7 and the pipe.

[0069] Then, the turntable 1 is rotated to make the file 20 of the paint filing assembly stick to the flange surface, and then the turntable 1 is 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 sleeve 10, thereby driving the file 20 to contact the flange. The electric push rod 17 is operated. During the extension and retraction process, the electric push rod 17 drives the slider 8 on the sleeve 10 along the slide groove 12 through the transmission of the first connecting rod 16 and the transmission rod 15. The sleeve 10 can perform arc-shaped reciprocating motion through the auxiliary support of the arc guide rail 14 on the slider 8, thereby driving the file 20 to reciprocate on the flange surface, and the paint on the flange surface is filed off by the file 20, so that the wire can be electrically connected to the flange. During the reciprocating motion of the transmission rod 15, the first piston 34 is driven to reciprocate in the sleeve 32 through the second connecting rod 36 and the sleeve rod 35, so that the volume of the space on the left side of the first piston 34 in the sleeve 32 increases and decreases. When the volume of the space increases, the outside gas enters the space through the first one-way valve 37. When the volume of the space decreases, part of the gas is output through the flow valve 39 and the air supply pipe 22, and the other part of the gas is output through the second one-way valve 38 and the air supply pipe 31. The gas output from the air supply pipe 22 enters the two blowing pipes 21 and is output from the blowing pipes 21, so that airflow is generated at the blade of the file 20 to blow away the paint filed off, so that the staff can observe the progress of filing the paint. The gas output through the air 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 filing is completed, the transition resistance of the filed paint parts at both ends of the flange is measured through the detection probe, and 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 is unqualified, the wire is placed at the filed paint position, the turntable 1 is rotated, the soldering iron 45 on the turntable 1 is aligned with the filed paint position, and the welding wire is pulled out from the winding reel 46 to weld the wire and the flange. After welding, the flange also needs to be painted.

[0071] During painting, the turntable 1 is rotated, the brush 26 is aligned with the paint filing position and / or the welding position, and the switch of the solenoid valve 41 is turned on, so that the high-pressure gas in the gas cylinder 29 enters the storage box 28 through the solenoid valve 41 and the connecting pipe 30, thereby pushing the second piston 42 to move, squeezing the paint in the storage box 28, and allowing the paint to be transported to the connecting pipe 24 through the feeding pipe 27, and then enter the connecting seat 25 through the connecting pipe 24, and seep out through the porous structure of the connecting seat 25, so that the paint adheres to the brush 26, and the paint is coated on the flange surface by the movement of the brush 26 on the flange surface, completing the painting work.

[0072] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope of the claims of the present invention.

Claims

1. A transition resistance measurement auxiliary device for a gas pipeline flange, characterized in that: It includes an annular component, a connecting component, a power component, a turntable, a paint filing component installed on the turntable, and a coating component. The annular component is used to be installed on the outer surface of the pipe. The connecting component is slidingly connected to the arc-shaped side surface of the annular component. One end of the connecting component is connected to the power component, and the other end of the connecting component is rotatably connected to the turntable. The paint filing component and the coating component are installed on the turntable at intervals. The power component can drive the connecting component to make an arc motion along the annular component and drive the paint filing component to reciprocate along the flange surface so as to file off the paint on the flange surface for transition resistance measurement.

2. A transition resistance measurement auxiliary device for a gas pipeline flange as claimed in claim 1, characterized in that: The annular component includes two semi-ring bodies arranged vertically, one end of the two semi-ring bodies is rotatably connected, and the other ends of the two semi-ring bodies are connected and fixed by a connecting piece, and the two semi-ring bodies are connected to form a ring.

3. A transition resistance measurement auxiliary device for a gas pipeline flange as claimed in claim 2, characterized in that: The connecting assembly includes a slider, a connecting rod, a sleeve and a first spring. The front surface of the semi-ring body located at the upper part is provided with an arc-shaped slide groove along the circumferential direction. The slider is slidably arranged on the slide groove. The outer surface of the sleeve is connected to the front surface of the slider. The connecting rod slides downward through the inner cavity of the sleeve. The upper end of the sleeve is provided with the first spring. The first spring is installed on the connecting rod, and its upper end is fixed to the upper end of the connecting rod. The lower end of the connecting rod is rotatably connected to the turntable, and the side wall of the sleeve is connected to the power assembly.

4. A transition resistance measurement auxiliary device for a gas pipeline flange as claimed in claim 3, characterized in that: It also includes a sliding positioning component, which includes a first support fixed on both sides of the annular component, an arc guide rail is installed between the two first supports, the guide rail is located at the front side of the slide groove, and the slider is inserted on the guide rail. When the slider slides in an arc along the slide groove, it synchronously slides back and forth in an arc along the guide rail.

5. The transition resistance measurement auxiliary device for a gas pipeline flange according to claim 3, characterized in that: The power assembly includes a transmission rod, one end of which is connected to the side wall of the sleeve, the other end of which is rotatably connected to the first connecting rod, the other end of which is rotatably connected to the power unit, the power unit is mounted on a second support, and the second support is mounted on the upper surface of the annular assembly.

6. The transition resistance measurement auxiliary device for a gas pipeline flange according to claim 1, characterized in that: The paint filing assembly includes a first connecting seat, a file and an air blow pipe, wherein 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, the air blow pipe is fixed to the side wall of the first connecting seat, the opening of the air blow pipe faces the blade of the file, and the air blow pipe is connected to one end of the air supply pipe.

7. A transition resistance measurement auxiliary device for a gas pipeline flange as claimed in claim 6, characterized in that: The coating assembly includes a second connecting seat, which is fixed to the front surface of the turntable. The second connecting seat is connected to the connecting seat through a connecting pipe. The outer wall of the connecting seat is connected to a brush. The connecting pipe is connected to one end of a supply pipe, and the other end of the supply pipe is connected to a storage box for placing paint.

8. A transition resistance measurement auxiliary device for a gas pipeline flange as claimed in claim 7, characterized in that: It also includes a booster assembly, which includes a high-pressure gas supply assembly, which is connected to a sleeve through a gas supply pipe, and the sleeve is installed on the annular assembly. A first piston is slidably provided in the inner cavity of the sleeve, and the first piston is connected to one end of a sleeve rod. The other end of the sleeve rod is rotatably connected to a second connecting rod after extending out of the sleeve, and the other end of the second connecting rod is rotatably connected to the transmission rod. A first one-way valve is provided on the side of the upper surface of the sleeve away from the sleeve rod, and a second one-way valve is provided on the end of the sleeve close to the first one-way valve, and the output port of the second one-way valve is connected to the gas supply pipe. A flow valve is provided on the sleeve, and the output port of the flow valve is connected to the other end of the gas supply pipe.

9. A transition resistance measurement auxiliary device for a gas pipeline flange as claimed in claim 8, characterized in that: The high-pressure gas supply assembly includes a gas cylinder, which is connected to the storage box through a connecting pipe, and the gas cylinder is connected to the sleeve through a gas supply pipe.

10. A transition resistance measurement auxiliary device for a gas pipeline flange as claimed in claim 9, characterized in that: A fixing seat is arranged at the bottom of the annular component, and the gas cylinder and the storage box are arranged on the fixing seat.

11. A transition resistance measurement auxiliary device for a gas pipeline flange according to claim 9, characterized in that: It also includes a feeding assembly, which includes a solenoid valve arranged at the end of the gas cylinder, the solenoid valve is connected to the storage box through the connecting pipe, and a second piston is slidably arranged in the inner cavity of the storage box, and the second piston divides the inner cavity of the storage box into two areas, one of which is filled with paint, and the other end of the feeding pipe is connected to the area, and a plurality of elastic elements are arranged in the other area, and the two ends of the plurality of elastic elements respectively abut against the second piston and the inner wall of the storage box.

12. A transition resistance measurement auxiliary device for a gas pipeline flange as claimed in claim 7, characterized in that: It also includes a welding assembly, which includes a third connecting seat, an electric soldering iron and a winding disk. The third connecting seat is fixed to the front surface of the turntable. The third connecting seat and the first connecting seat and the second connecting seat are evenly spaced along the circumferential direction on the turntable. The outer end of the third connecting seat is provided with an electric soldering iron, and the winding disk is rotatably connected to the third connecting seat.

13. A transition resistance measurement auxiliary device for a gas pipeline flange as claimed in claim 1, characterized in that: It also includes a positioning and fastening component, which includes a plurality of screw rods. A plurality of screw holes are circumferentially arranged on the side wall of the annular component. The plurality of screw rods are inserted into the plurality of screw holes, and a fixing plate is arranged at one end of each screw rod extending into the inner cavity of the annular component. When the annular component is installed on the outer surface of the pipe, the plurality of fixing plates are in contact with the outer surface of the pipe.

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