CN211999916U - Passivation treatment device for inner surface of stainless steel pipeline welding seam - Google Patents

Abstract

The utility model discloses a passivation treatment device for the inner surface of a stainless steel pipeline welding seam, which comprises a passivation device main body capable of entering the stainless steel pipeline, wherein the passivation device main body comprises a machine head shell, a machine head rotating device and a passivation medium supply device; the passivation medium supply device is fixed in the handpiece shell and is communicated with the passivation medium extrusion head through the passivation medium extrusion port; the machine head rotating device is fixedly connected with the machine head shell and drives the machine head shell, the passivation medium supply device and the passivation medium extrusion head to rotate along the inner surface of the welding line of the stainless steel pipeline so as to passivate the inner surface of the welding line of the stainless steel pipeline. The camera adjacent to the passivation medium extrusion head is fixed on the machine head shell, and the camera is perpendicular to the machine head shell and the lens of the camera is arranged outwards. Simple process, small device volume and single-person operation.

Description

Passivation treatment device for inner surface of stainless steel pipeline welding seam

Technical Field

The utility model belongs to metal surface passivation treatment field relates to a passivation treatment device of stainless steel pipeline welding seam internal surface.

Background

With the continuous improvement of the engineering quality requirement, the stainless steel pipeline is increasingly applied to fluid medium conveying engineering with excellent corrosion resistance and high pressure bearing capacity. The stainless steel pipeline construction adopts argon arc welding butt welding, and the vast majority of pipelines are single face welding two-sided shaping, and the pipeline is inside not to have argon protection, and the corrosion resistance in welding seam and the base metal heat affected zone has certain decline of certain degree, meets water or vapor and can produce the corrosion in the use, and because single stainless steel pipeline is longer, and the pipeline of narrow and small diameter can not the manual work get into and carry out anticorrosive treatment to it. After the existing pipeline is sealed in sections, the whole stainless steel pipeline is passivated by filling passivation solution, and after passivation, the stainless steel pipeline is washed by water and then dried by blowing, which has the following defects: 1. the process is complicated; 2. the equipment is huge, the space requirement on the construction environment is higher, and the construction method is only suitable for a flat construction environment and is not suitable for working conditions of field overhead, narrow construction site and the like; 3. the equipment cost is high; 4. the consumption of the passivation medium is large, and the material cost is high.

Disclosure of Invention

An object of the embodiment of the utility model is to provide a passivation treating device of stainless steel pipeline welding seam internal surface to solve because single stainless steel pipeline is longer, the diameter is narrow and small and can not the manual work carry out passivation treating's problem, and the problem that the equipment volume that current stainless steel pipeline welding seam internal surface passivation treating method passivation medium consumption is big, the process is complicated, with high costs, adopts is big can not adapt to narrow and small construction environment.

The embodiment of the utility model adopts the technical scheme that the passivation treatment device for the inner surface of the welding line of the stainless steel pipeline comprises a passivation device main body which can enter the stainless steel pipeline, wherein the passivation device main body comprises a machine head shell, a machine head rotating device and a passivation medium supply device, the machine head shell is provided with a passivation medium extrusion head and a passivation medium extrusion port, and the passivation medium extrusion head is fixed outside the machine head shell; the passivation medium supply device is fixed in the handpiece shell and is communicated with the passivation medium extrusion head through the passivation medium extrusion port; the machine head rotating device is fixedly connected with the machine head shell and drives the machine head shell, the passivation medium supply device and the passivation medium extrusion head to rotate along the inner surface of the welding line of the stainless steel pipeline so as to passivate the inner surface of the welding line of the stainless steel pipeline.

Further, the machine head rotating device comprises a machine head driving motor and a machine head rotating main shaft, one end of the machine head rotating main shaft is fixedly connected with an output shaft of the machine head driving motor, the other end of the machine head rotating main shaft penetrates through the machine head shell and is fixedly connected with the machine head shell, and the machine head driving motor rotates to drive the machine head shell to rotate through the machine head rotating main shaft.

Further, the passivating medium supply device comprises a passivating medium storage bin, a passivating medium extrusion conduit, a piston and an extrusion power supply device; the passivation medium storage bin is of a cylindrical structure, the piston is positioned in the passivation medium storage bin, and the outer side wall of the piston is in contact with the inner wall of the passivation medium storage bin; the passivation medium extrusion conduit is communicated with a passivation medium storage cavity in the passivation medium storage bin, and the passivation medium storage cavity is positioned on one side of the piston and used for storing passivation medium; the machine head rotating main shaft is fixedly connected with the piston through the extrusion power supply device, so that when the machine head rotating main shaft rotates, the piston can be driven to do linear motion in the passivation medium storage bin along the central shaft of the passivation medium storage bin, and the volume of the passivation medium storage cavity is increased or decreased.

Furthermore, a guide sliding rail arranged along the length direction of the passivation medium storage bin is arranged on the inner wall of the passivation medium storage bin, a guide sliding groove arranged along the length direction of the piston is arranged on the outer side wall of the piston, and the guide sliding rail and the guide sliding groove work in a matched mode, so that the piston can move linearly along the guide sliding rail in the passivation medium storage bin.

Furthermore, the extrusion power supply device comprises a second gear fixing shaft, a first gear, a second gear, a third gear, a fourth gear and a second screw rod, the first gear is installed on a machine body shell outside the machine head driving motor, and one end of a machine head rotating spindle penetrates through the first gear and then is fixedly connected with an output shaft of the machine head driving motor; the second gear fixing shaft is parallel to the machine head rotating main shaft, one end of the second gear fixing shaft is fixed with a second gear meshed with the first gear, and the other end of the second gear fixing shaft penetrates through the machine head shell and is connected with the machine head shell through a bearing; the third gear is fixedly sleeved on the second gear fixing shaft; the machine head rotating main shaft rotates, the first gear is meshed with the second gear, so that the second gear and the second gear fixing shaft revolve around the first gear and simultaneously generate autorotation to drive the third gear to autorotate; the fourth gear is meshed with the third gear, the fourth gear is fixedly sleeved at one end of a lead screw main shaft of the second lead screw, and the other end of the lead screw main shaft of the second lead screw penetrates through the passivation medium storage bin and is connected with the passivation medium storage bin through a bearing;

the piston is fixedly sleeved on the second screw rod, the third gear is meshed with the fourth gear during rotation, the screw rod main shaft of the second screw rod is driven to rotate in the passivation medium storage bin through the fourth gear, and the piston is pushed to move linearly in the passivation medium storage bin.

Furthermore, a walking device is fixed on the driving passivation device main body, the walking device comprises a plurality of driving wheels which are uniformly distributed and fixed on the passivation device main body, and the driving wheels are connected with the passivation device main body through a driving wheel telescopic device;

the driving wheel telescopic device consists of a driving wheel telescopic arm, a fixed link seat, a first lead screw, a sliding link seat and a lead screw driving motor, wherein the first lead screw is a bidirectional lead screw, two sliding link seats are arranged on the first lead screw, and two ends of a lead screw main shaft of the first lead screw are movably connected with the fixed link seat fixed in the machine body shell respectively; one of the fixed linking seats is adjacent to the screw driving motor, one end of the screw spindle of the first screw penetrates through the fixed linking seat and is fixedly connected with the output shaft of the screw driving motor, and the other fixed linking seat is adjacent to the handpiece driving motor; a plurality of driving wheel telescopic arms which are uniformly distributed are fixed on each fixed linking seat and the sliding connecting seat close to the fixed linking seat, a rectangular sliding groove for the telescopic arm of the driving wheel is arranged on the machine body shell, one end of each driving wheel telescopic arm is hinged with the sliding connecting seat, the other end of each driving wheel telescopic arm is fixedly connected with an external driving wheel through the rectangular sliding groove on the machine body shell, and the middle of each driving wheel telescopic arm is hinged with the fixed linking seat through a driving wheel supporting arm; the driving wheel telescopic arms on the two fixed link seats are in one-to-one correspondence and are symmetrically arranged.

Furthermore, at least two passivating medium supply devices are fixed in the handpiece shell, and when the number of the passivating medium supply devices is equal to two, the passivating medium supply devices are symmetrically arranged on the circumferential direction of the handpiece rotating main shaft; when the number of the passivating medium supply devices is more than two, the passivating medium supply devices are uniformly distributed in the circumferential direction of the rotating main shaft of the machine head.

Furthermore, a telescopic arm connecting seat is fixed on the machine head shell, and the passivation medium extrusion head is fixedly connected with the telescopic arm connecting seat through a passivation medium extrusion head adjusting device.

Furthermore, the passivation medium extrusion head adjusting device comprises a first extrusion telescopic arm, a second extrusion telescopic arm, a telescopic arm first fixing bolt and a telescopic arm second fixing bolt, wherein the first extrusion telescopic arm and the second extrusion telescopic arm are arranged in parallel, the top end of the first extrusion telescopic arm is fixed on the telescopic arm connecting seat through the telescopic arm first fixing bolt, the top end of the second extrusion telescopic arm is separated from the top end of the first extrusion telescopic arm by a certain gap, and the bottom end of the first extrusion telescopic arm is fixedly connected with the bottom end of the second extrusion telescopic arm through the telescopic arm second fixing bolt; the second extrusion telescopic arm is provided with an extrusion head adjusting chute along the length direction, and the passivation medium extrusion head is fixed in the extrusion head adjusting chute through an extrusion head fixing bolt; the head of the extrusion head fixing bolt is located on one side, close to the first extrusion telescopic arm, of the second extrusion telescopic arm, the tail of the extrusion head fixing bolt penetrates through the extrusion head adjusting chute and is located on one side, far away from the first extrusion telescopic arm, of the second extrusion telescopic arm, and the passivation medium extrusion head is fixed to the tail of the extrusion head fixing bolt.

Furthermore, a camera which is adjacent to the passivation medium extrusion head is fixed on the machine head shell, and the camera is perpendicular to the machine head shell and the lens of the camera is arranged outwards.

The embodiment of the utility model has the advantages that the passivating treatment device for the inner surface of the welding seam of the stainless steel pipeline is provided, which has simple working procedures and small volume, can be operated by one person and can adapt to construction sites such as open-air, narrow and overhead pipelines, and the like, and under the premise of not changing equipment parts, the inner surface of the welding seam of different stainless steel pipe diameters can be applied to the corrosion prevention work by the walking device and the driving wheel expansion device within a certain range; the passivation medium extrusion head is adopted to rotationally coat the passivation medium on the inner surface of the welding line, the whole stainless steel pipeline is not required to be filled with passivation liquid, and the consumption of the passivation medium is low. When a single stainless steel pipeline is too long, the inner surface of the welding seam of the stainless steel pipeline can be subjected to anticorrosive treatment through the lengthened line, so that the problem that manual passivation treatment cannot be carried out due to the fact that the single pipeline is long and the diameter of the single pipeline is narrow is solved, and the problems that the consumption of a passivation medium is large, the process is complex, the cost is high, the size of adopted equipment is large, and the adopted equipment is not suitable for narrow and special construction environments are solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the general structure of a passivation treatment device for the inner surface of a stainless steel pipeline weld joint.

Fig. 2 is a schematic structural view of the walking device.

Fig. 3 is an external structural view of a handpiece housing.

Fig. 4 is a schematic structural view of a passivation medium supply device.

Fig. 5 is a schematic view of the internal structure of the passivation medium storage bin.

Fig. 6 is an external configuration diagram of the extrusion power supply apparatus.

Fig. 7 is a schematic view of the internal structure of the extrusion power supply apparatus.

Fig. 8 is a schematic view of the piston structure.

FIG. 9 is a schematic diagram of the configuration of a passivating medium extrusion head conditioning apparatus.

FIG. 10 is a schematic top view of a passivating medium extrusion head conditioning apparatus.

FIG. 11 is a state diagram after the position of the blunting medium extrusion head has been adjusted.

In the figure, 1, a camera, 2, a passivation medium extrusion head, 3, a telescopic arm connecting seat, 4, a driving wheel, 5, a driving wheel telescopic arm, 6, a machine body shell, 7, a first extrusion telescopic arm, 8, a second extrusion telescopic arm, 9, a machine head shell, 10, a machine head driving motor, 11, a fixed linking seat, 12, a first lead screw, 13, a sliding linking seat, 14, a lead screw driving motor, 15, a telescopic arm first fixing bolt, 16, a telescopic arm second fixing bolt, 17, a machine head rotating main shaft, 18, a second gear fixing shaft, 19, a first gear, 20, a second gear, 21, a passivation medium storage bin, 22, a third gear, 23, a fourth gear, 24, a second lead screw, 25, an extrusion head fixing bolt, 26, a passivation medium extrusion port, 27, a passivation medium extrusion conduit, 28, a piston, 29, a guide sliding rail, 30, 31 and an extrusion head adjusting sliding chute are arranged.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model provides a stainless steel pipeline welding seam internal surface passivation treating device for carry out passivation treating to stainless steel pipeline welding seam internal surface, as shown in fig. 1, including the passivation device main part that can carry out passivation treating to stainless steel pipeline's welding seam internal surface, the passivation device main part includes aircraft nose shell 9, aircraft nose rotary device and passivation medium feeding device, and passivation medium feeding device fixes in aircraft nose shell 9. A passivation medium extrusion head 2 and a passivation medium extrusion port 26 are arranged on the machine head shell 9, the passivation medium extrusion head 2 is vertically fixed outside the machine head shell 9, and the passivation medium extrusion head 2 is communicated with a passivation medium supply device through the passivation medium extrusion port 26 to passivate the inner surface of a welding line in the stainless steel pipeline; the machine head rotating device is fixedly connected with the machine head shell 9 and drives the machine head shell 9, the passivation medium extrusion head 2 and the passivation medium supply device to rotate along the inner surface of the welding line in the stainless steel pipeline so as to completely passivate the inner surface of the welding line in the stainless steel pipeline.

As another embodiment of the present invention, as shown in fig. 2 to 3, the handpiece rotating device is composed of a handpiece driving motor 10 and a handpiece rotating spindle 17, one end of the handpiece rotating spindle 17 is fixedly connected with the output shaft of the handpiece driving motor 10, and the other end of the handpiece rotating spindle runs through the handpiece housing 9 and is fixedly connected with the handpiece housing 9, the handpiece driving motor 10 rotates, and the handpiece rotating spindle 17 drives the handpiece housing 9 to rotate. In addition, at least two passivation medium extrusion devices which are symmetrically or uniformly arranged on the circumference of the handpiece rotating main shaft 17 are fixed in the handpiece shell 9.

As another embodiment of the present invention, as shown in fig. 4 to 5, the passivation medium supplying device includes a passivation medium storage 21, a passivation medium extruding conduit 27, a piston 28 and an extruding power supplying device, the passivation medium storage 21 is a cylindrical structure, the piston 28 is located in the passivation medium storage 21 and the outer wall thereof contacts with the inner wall of the passivation medium storage 21, the passivation medium extruding conduit 27 is communicated with the passivation medium storage chamber in the passivation medium storage 21, and the passivation medium storage chamber is located at one side of the piston 28 and is used for storing passivation medium; the handpiece rotating main shaft 17 is fixedly connected with the piston 28 through the extrusion power supply device, so that when the handpiece rotating main shaft 17 rotates, the piston 28 can be driven to linearly move in the passivation medium storage bin 21 along the central axis of the passivation medium storage bin 21, and when the extrusion power supply device drives the piston 28 to move towards the passivation medium storage bin, the piston 28 extrudes the passivation medium in the passivation medium storage bin, so that the passivation medium enters the passivation medium extrusion port 26 through the passivation medium extrusion conduit 27 and then reaches the passivation medium extrusion head 2 through an external conduit connected with the passivation medium extrusion port 26 and the passivation medium extrusion head 2.

As another embodiment of the present invention, as shown in fig. 5 and fig. 8, a guiding slide rail 29 is disposed on the inner wall of the passivation medium storage bin 21 and is disposed along the length direction thereof, a guiding slide groove 30 is disposed on the side wall of the piston 28 and is disposed along the length direction thereof, the guiding slide rail 29 cooperates with the guiding slide groove 30, so that the handpiece housing 9 drives the passivation medium storage bin 21 and the piston 28 to revolve around the handpiece rotating spindle 17, the third gear 22 rotates to sequentially drive the fourth gear 23 and the lead screw spindle of the second lead screw 24 to rotate, and further the piston 28 makes a linear motion in the passivation medium storage bin 21 along the guiding slide rail 29, that is, the piston 28 and the passivation medium storage bin 21 act through the guiding slide rail 29 and the guiding slide groove 30, so that there is no relative rotation in the radial direction therebetween.

As another embodiment of the present invention, as shown in fig. 6 to 8, the extrusion power supply device includes a first gear 19, a second gear 20, a second gear fixing shaft 18, a third gear 22, a fourth gear 23 and a second lead screw 24, the first gear 19 is fixedly connected to the machine body housing 6 outside the machine head driving motor 10, and one end of the machine head rotating spindle 17 passes through the first gear 19 and then is fixedly connected to the output shaft of the machine head driving motor 10; the second gear fixing shaft 18 is parallel to the handpiece rotating main shaft 17, one end of the second gear fixing shaft is fixed with a second gear 20 meshed with the first gear 19, the other end of the second gear fixing shaft penetrates through the handpiece shell 9 and is connected with the handpiece shell 9 through a bearing, and a third gear 22 is fixedly sleeved on the second gear fixing shaft 18. The handpiece housing 9 rotates to drive the second gear fixing shaft 18 and the second gear 20 to revolve around the first gear 19 at the same speed, at this time, the second gear 20 is meshed with the external first gear 19, and since the first gear 19 is a fixed gear, the second gear 20 and the second gear fixing shaft 18 revolve around the first gear 19 and rotate at the same time, and further drive the third gear 22 to rotate. The fourth gear 23 is engaged with the third gear 22, the fourth gear 23 is fixedly sleeved at one end of a lead screw spindle of the second lead screw 24, and the other end of the lead screw spindle of the second lead screw 24 penetrates through the passivation medium storage bin 21 and is connected with the passivation medium storage bin 21 through a bearing. The piston 28 is fixedly sleeved on the second screw 24, the third gear 22 is meshed with the fourth gear 23 when rotating, a screw spindle of the second screw 24 is driven to rotate in the passivation medium storage bin 21, the piston 28 is pushed to do linear motion in the passivation medium storage bin 21, the volume of the passivation medium storage bin is reduced or enlarged, when the volume of the passivation medium storage bin is reduced, the passivation medium is conveyed to the passivation medium extrusion head 2 along the passivation medium extrusion conduit 27 under the extrusion effect of the piston 28, the passivation medium is extruded out, and when the volume of the passivation medium is enlarged, the passivation medium can be added into the passivation medium storage bin through the passivation medium extrusion conduit 27 through the passivation medium extrusion port 26.

As another embodiment of the present invention, a telescopic arm connecting seat 3 is fixed on the head housing 9, and the passivation medium extrusion head 2 is fixedly connected with the telescopic arm connecting seat 3.

As another embodiment of the present invention, the passivation medium extrusion head 2 is fixedly connected to the telescopic arm connecting seat 3 through the passivation medium extrusion head adjusting device. As shown in fig. 9-10, the passivation medium extrusion head adjusting device includes a first extrusion telescopic arm 7, a second extrusion telescopic arm 8, a first telescopic arm fixing bolt 15 and a second telescopic arm fixing bolt 16, the first extrusion telescopic arm 7 and the second extrusion telescopic arm 8 are arranged in parallel, the top end of the first extrusion telescopic arm 7 is fixed on the telescopic arm connecting seat 3 through the first telescopic arm fixing bolt 15, the top end of the second extrusion telescopic arm 8 is separated from the top end of the first extrusion telescopic arm 7 by a certain gap, and the bottom end of the first extrusion telescopic arm 7 is fixedly connected with the bottom end of the second extrusion telescopic arm 8 through the second telescopic arm fixing bolt 16. The second extrusion telescopic arm 8 is provided with an extrusion head adjusting chute 31 along the length direction thereof, and the passivation medium extrusion head 2 is fixed in the extrusion head adjusting chute 31 through an extrusion head fixing bolt 25. The head of the extrusion head fixing bolt 25 is located on one side, close to the first extrusion telescopic arm 7, of the second extrusion telescopic arm 8, the tail of the extrusion head fixing bolt penetrates through the extrusion head adjusting chute 31 and is located on one side, far away from the first extrusion telescopic arm 7, of the second extrusion telescopic arm 8, and the passivation medium extrusion head 2 is fixed on the tail of the extrusion head fixing bolt 25. When the height of the passivation medium extrusion head 2 is required to be adjusted according to the inner diameter of the stainless steel pipeline, the second fixing bolt 16 of the telescopic arm can be loosened first, the position of the second extrusion telescopic arm 8 is adjusted, so that the position of the passivation medium extrusion head 2 is changed to be high or low, then the second fixing bolt 16 of the telescopic arm is fastened, the extrusion head fixing bolt 25 is loosened, the passivation medium extrusion head 2 slides along the extrusion head adjusting chute 31, after the end part of the passivation medium extrusion head 2 is contacted with the inner surface of the welding seam of the stainless steel pipeline, the extrusion head fixing bolt 25 is fastened, the height adjustment of the passivation medium extrusion head 2 is completed, and the structural schematic diagram of the adjusted device is shown in fig. 11. The passivation medium extrusion head adjusting device is arranged, the device can adapt to stainless steel pipelines with different pipe diameters within a certain range, and the inner surfaces of welding seams of the stainless steel pipelines with different pipe diameters are subjected to anti-corrosion treatment.

As another embodiment of the utility model, still including the running gear that can drive the passivating device main part and remove inside stainless steel pipeline, running gear includes that a plurality of evenly distributed fix the ascending drive wheel 4 of passivating device main part week, and 4 inside power structures that are equipped with of drive wheel adopt on the market sell drive wheel assembly can.

As another embodiment of the present invention, in order to adapt to different stainless steel pipe inner diameters, the walking device further includes a driving wheel telescopic device fixed on the body housing 6, as shown in fig. 1-2, the driving wheel telescopic device is composed of a driving wheel telescopic arm 5, a fixed link base 11, a first lead screw 12, a sliding link base 13 and a lead screw driving motor 14, the first lead screw 12 is a bidirectional lead screw, two sliding link bases 13 are arranged on the first lead screw 12, and two ends of a main shaft of the first lead screw 12 are respectively movably connected with the fixed link base 11 fixed inside the body housing 6 (movable connection can be achieved through a bearing); one of the fixed linking seats 11 is adjacent to the driving motor 14, one end of the main shaft of the first lead screw 12 penetrates through the fixed linking seat 11 and is fixedly connected with the output shaft of the lead screw driving motor 14, and the other fixed linking seat 11 is adjacent to the handpiece driving motor 10. Every fixed link seat 11 and the sliding connection seat 13 that is close to it are fixed with the flexible arm 5 of drive wheel of a plurality of circumference evenly distributed on, be provided with the flexible rectangle spout that is used for the flexible arm 5 of drive wheel on the fuselage shell 6, the flexible arm 5 one end of drive wheel is articulated with sliding connection seat 13, its other end is through the rectangle spout on the fuselage shell 6 and outside drive wheel 4 fixed connection, it is articulated with fixed link seat 11 through a drive wheel support arm in the middle of it, the flexible arm 5 one-to-one of drive wheel on two fixed link seats 11 sets up with the symmetry.

As another embodiment of the present invention, at least 3 driving wheel telescopic arms 5 are fixed on each fixed linking seat 11 of the driving wheel telescopic device and the sliding connecting seat 13 close thereto, so as to ensure the stability of the movement.

As another embodiment of the utility model, in order to be inside visible at the stainless steel pipeline to make things convenient for running gear's the location of controlling and stainless steel pipeline welding seam, be fixed with on aircraft nose shell 9 and extrude first 2 adjacent cameras 1 with the passivation medium, camera 1 perpendicular to aircraft nose shell 9 and its camera lens outwards set up. The use method and the supporting system of the camera 1 are well known in the art, and are not described herein again, and a commercially available camera may be used in this embodiment.

As another embodiment of the present invention, a commercially available passivation paste is used as the passivation medium.

The utility model discloses stainless steel pipeline welding seam internal surface's passivation method goes on according to following step:

s1, checking and confirming that the passivation treatment device on the inner surface of the stainless steel pipeline welding seam works normally;

step S2, controlling the handpiece driving motor 10 to work to increase the volume of a passivation medium storage cavity in the passivation medium storage bin 21, then controlling the handpiece driving motor 10 to stop working, and filling passivation medium into the passivation medium storage cavity through the passivation medium extrusion port 26;

the operation of the handpiece driving motor 10 is controlled, a piston 28 is driven by a handpiece rotating main shaft 17, a first gear 19, a second gear 20, a second gear fixing shaft 18, a third gear 22, a fourth gear 23 and a second screw 24 to move towards one end of the passivation medium storage bin 21 far away from the passivation medium extrusion conduit 27 in sequence, so that the volume in the passivation medium storage bin 21 is increased, then the handpiece driving motor 10 is controlled to stop working, and passivation medium is added into the passivation medium storage bin 21 through the passivation medium extrusion conduit 27 through a passivation medium extrusion port 26.

Step S3, controlling the lead screw driving motor 14 to work according to the inner diameter of the stainless steel pipeline, and adjusting the position of the driving wheel 4 to enable the driving wheel 4 to be in contact with the inner wall of the stainless steel pipeline, so that the traveling device can drive the passivation device main body to move in the pipeline conveniently; and the first fixing bolt 15 of the telescopic arm and the second fixing bolt 16 of the telescopic arm are actuated to adjust the position of the passivation medium extrusion head 2, so that the passivation medium extrusion head 2 is in contact with the inner wall of the stainless steel pipeline, and the passivation medium extrusion head 2 is convenient to paint passivation medium.

When the inner diameter of the stainless steel pipeline to be operated is too large, the screw driving motor 14 is controlled to work, the screw main shaft of the first screw 12 is made to rotate, the two sliding link seats 13 are driven to move towards the two ends of the first screw 12, all the driving wheels 4 move towards the inner wall of the stainless steel pipeline to be close to each other under the action of the driving wheel telescopic arms 5 and the driving wheel supporting arms hinged with the driving wheel telescopic arms 5 and the fixed link seats 11, and when all the driving wheels 4 are in contact with the inner wall of the stainless steel pipeline, the screw driving motor 14 is controlled to stop working.

When the inner diameter of the stainless steel pipeline to be operated is too small, the lead screw driving motor 14 is controlled to work, a lead screw main shaft of the first lead screw 12 is made to rotate, the two sliding link seats 13 are driven to move towards the center of the first lead screw 12, all driving wheels 4 move towards the passivation device main body to be close under the action of the driving wheel telescopic arms 5 and the driving wheel supporting arms hinged with the driving wheel telescopic arms 5 and the fixed link seats 11, when the plane diameter of the driving wheels 4 fixed on the same sliding link seat 13 is smaller than the pipe diameter of the stainless steel pipeline, the driving wheels are placed in the stainless steel pipeline, then the lead screw driving motor 14 is controlled to work to adjust the positions of the driving wheels 4, and after all the driving wheels 4 are in contact with the inner wall of the stainless steel.

Step S4, controlling the driving wheel 4 to work, enabling the traveling device to drive the passivation device main body to move towards the inside of the stainless steel pipeline along the inner wall of the stainless steel pipeline, controlling the driving wheel 4 to drive the passivation medium extrusion head 2 to reach the position of the inner surface of the welding seam and a surrounding heat affected zone in the traveling device through a video image transmitted by the camera 1, and then controlling the driving wheel 4 to be powered off to stop working, wherein the passivation medium extrusion head 2 is in contact with the inner surface of the welding seam of the stainless steel pipeline and the surrounding heat affected zone;

the driving wheel 4 is controlled to work, then the passivation device main body is driven to move towards the inside of the stainless steel pipeline along the inner wall of the stainless steel pipeline, meanwhile, the camera 1 transmits a moving path video image in real time, when the stainless steel pipeline welding seam is displayed in the video image transmitted by the camera 1, the driving wheel 4 is controlled to stop working, and the passivation medium extrusion head 2 is adjacent to the camera 1, so that the passivation medium extrusion head 2 is also located on the inner surface of the stainless steel pipeline welding seam at the moment.

Step S5, controlling a handpiece driving motor 10 to work, driving a passivation medium extrusion head 2 to rotate through a handpiece shell 9, simultaneously driving a passivation medium supply device to supply passivation medium into the passivation medium extrusion head 2, and uniformly coating the passivation medium on the inner surface of the stainless steel pipeline welding seam and a peripheral heat affected zone by the passivation medium extrusion head 2;

and controlling a handpiece driving motor 10 to work, and driving a handpiece rotating main shaft 17 to drive a handpiece shell 9 to rotate so as to drive the passivation medium extrusion head 2 to rotate. Meanwhile, the second gear 20 is meshed with the first gear 19 to rotate, and drives a piston 28 to extrude the passivation medium in the passivation medium storage cavity through the second gear fixing shaft 18, the third gear 22, the fourth gear 23 and the second screw 24, so that the passivation medium enters the passivation medium extrusion conduit 27 and reaches the passivation medium extrusion head 2 through the passivation medium extrusion port 26, the passivation medium is supplied into the passivation medium extrusion head 2, and the passivation medium is coated on the inner surface of the stainless steel pipeline welding seam and the surrounding heat affected zone in the rotation process of the passivation medium extrusion head 2. In this in-process, the process of passivation operation is observed to accessible camera 1 to after scribbling the completion, utilize camera 1 inspection to scribble the effect, when control misoperation, cause to scribble the effect not good, but multiple operation is in order to guarantee the passivation effect.

And step S6, controlling the driving wheel 4 to work, and enabling the traveling device to drive the passivation device main body to move towards the outside of the stainless steel pipeline along the inner wall of the stainless steel pipeline, namely completing the passivation treatment work of the inner surface of the welding seam of the stainless steel pipeline. In the process, the screw driving motor 14 can be controlled firstly, so that the driving wheel 4 is far away from the inner wall of the stainless steel pipeline, and then the driving wheel 4 is controlled to work to drive the passivation device main body to move towards the outside of the stainless steel pipeline along the inner wall of the stainless steel pipeline.

The driving wheel 4, the handpiece driving motor 10 and the lead screw driving motor 14 can be automatically controlled by a controller or manually controlled.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. The passivation device for the inner surface of the stainless steel pipeline welding line is characterized by comprising a passivation device main body capable of entering the stainless steel pipeline, wherein the passivation device main body comprises a machine head shell (9), a machine head rotating device and a passivation medium supply device, a passivation medium extrusion head (2) and a passivation medium extrusion port (26) are arranged on the machine head shell (9), and the passivation medium extrusion head (2) is fixed outside the machine head shell (9); the passivating medium supply device is fixed in the handpiece shell (9) and is communicated with the passivating medium extrusion head (2) through a passivating medium extrusion port (26); the machine head rotating device is fixedly connected with the machine head shell (9) and drives the machine head shell (9), the passivation medium supply device and the passivation medium extrusion head (2) to rotate along the inner surface of the welding line of the stainless steel pipeline so as to passivate the inner surface of the welding line of the stainless steel pipeline.

2. The passivation device for the inner surface of the stainless steel pipeline weld joint according to claim 1, wherein the machine head rotating device comprises a machine head driving motor (10) and a machine head rotating main shaft (17), one end of the machine head rotating main shaft (17) is fixedly connected with an output shaft of the machine head driving motor (10), the other end of the machine head rotating main shaft penetrates through the machine head shell (9) and is fixedly connected with the machine head shell (9), and the machine head driving motor (10) rotates to drive the machine head shell (9) to rotate through the machine head rotating main shaft (17).

3. The passivation device for the inner surface of the stainless steel pipeline welding seam according to the claim 2, wherein the passivation medium supply device comprises a passivation medium storage bin (21), a passivation medium extrusion conduit (27), a piston (28) and an extrusion power supply device; the passivation medium storage bin (21) is of a cylindrical structure, the piston (28) is positioned in the passivation medium storage bin (21), and the outer side wall of the piston is in contact with the inner wall of the passivation medium storage bin (21); the passivation medium extrusion conduit (27) is communicated with a passivation medium storage cavity in the passivation medium storage bin (21), and the passivation medium storage cavity is communicated with one side of the piston (28) and used for storing passivation medium; the machine head rotating main shaft (17) is fixedly connected with the piston (28) through the extrusion power supply device, so that when the machine head rotating main shaft (17) rotates, the piston (28) can be driven to do linear motion in the passivation medium storage bin (21) along the central axis of the passivation medium storage bin (21), and the volume of the passivation medium storage cavity is increased or decreased.

4. The passivation device for the inner surface of the stainless steel pipeline welding seam according to claim 3, characterized in that a guide slide rail (29) arranged along the length direction of the passivation medium storage bin (21) is arranged on the inner wall of the passivation medium storage bin, a guide slide groove (30) arranged along the length direction of the piston (28) is arranged on the outer side wall of the piston (28), and the guide slide rail (29) and the guide slide groove (30) are matched to work so that the piston (28) can linearly move along the guide slide rail (29) in the passivation medium storage bin (21).

5. The passivation device for the inner surface of the stainless steel pipeline weld joint according to claim 3 or 4, wherein the extrusion power supply device comprises a second gear fixing shaft (18), a first gear (19), a second gear (20), a third gear (22), a fourth gear (23) and a second lead screw (24), the first gear (19) is installed on a machine body shell (6) outside the machine head driving motor (10), and one end of a machine head rotating spindle (17) penetrates through the first gear (19) and then is fixedly connected with an output shaft of the machine head driving motor (10); the second gear fixing shaft (18) is parallel to the handpiece rotating main shaft (17), one end of the second gear fixing shaft is fixed with a second gear (20) meshed with the first gear (19), and the other end of the second gear fixing shaft penetrates through the handpiece shell (9) and is connected with the handpiece shell (9) through a bearing; the third gear (22) is fixedly sleeved on the second gear fixing shaft (18); the machine head rotating main shaft (17) rotates, the first gear (19) is meshed with the second gear (20), so that the second gear (20) and the second gear fixing shaft (18) revolve around the first gear (19) and simultaneously rotate to drive the third gear (22) to rotate; the fourth gear (23) is meshed with the third gear (22), the fourth gear (23) is fixedly sleeved at one end of a lead screw main shaft of the second lead screw (24), and the other end of the lead screw main shaft of the second lead screw (24) penetrates through the passivation medium storage bin (21) and is connected with the passivation medium storage bin (21) through a bearing;

the piston (28) is fixedly sleeved on the second lead screw (24), the third gear (22) is meshed with the fourth gear (23) during rotation, a lead screw spindle of the second lead screw (24) is driven to rotate in the passivation medium storage bin (21) through the fourth gear (23), and the piston (28) is pushed to move linearly in the passivation medium storage bin (21).

6. The passivation device for the inner surface of the stainless steel pipeline welding line according to claim 5, wherein a walking device is fixed on the passivation device body, the walking device comprises a plurality of driving wheels (4) which are uniformly distributed and fixed on the passivation device body, and the driving wheels (4) are connected with the passivation device body through driving wheel telescoping devices;

the driving wheel telescopic device is composed of a driving wheel telescopic arm (5), a fixed linking seat (11), a first lead screw (12), two sliding linking seats (13) and a lead screw driving motor (14), wherein the first lead screw (12) adopts a bidirectional lead screw, the two sliding linking seats (13) are arranged on the first lead screw (12), and two ends of a lead screw main shaft of the first lead screw (12) are respectively movably connected with the fixed linking seat (11) fixed in the machine body shell (6); one fixed linking seat (11) is adjacent to the screw rod driving motor (14), one end of a screw rod main shaft of the first screw rod (12) penetrates through the fixed linking seat (11) and is fixedly connected with an output shaft of the screw rod driving motor (14), and the other fixed linking seat (11) is adjacent to the machine head driving motor (10); a plurality of driving wheel telescopic arms (5) which are uniformly distributed are fixed on each fixed linking seat (11) and the sliding linking seat (13) close to the fixed linking seat, a rectangular sliding groove for the telescopic driving wheel telescopic arms (5) is formed in the machine body shell (6), one end of each driving wheel telescopic arm (5) is hinged with the sliding linking seat (13), the other end of each driving wheel telescopic arm is fixedly connected with an external driving wheel (4) through the rectangular sliding groove in the machine body shell (6), and the middle of each driving wheel telescopic arm is hinged with the fixed linking seat (11) through a driving wheel supporting arm; the driving wheel telescopic arms (5) on the two fixed linking seats (11) are arranged in a one-to-one correspondence and symmetry way.

7. The passivation device for the inner surface of the stainless steel pipeline welding seam according to any one of claims 2 to 4 and 6, characterized in that at least two passivation medium supply devices are fixed in the handpiece shell (9), and when the number of the passivation medium supply devices is equal to two, the passivation medium supply devices are symmetrically arranged on the circumferential direction of the handpiece rotating main shaft (17); when the number of the passivating medium supply devices is more than two, the passivating medium supply devices are uniformly distributed on the circumferential direction of the rotating main shaft (17) of the machine head.

8. The passivation device for the inner surface of the stainless steel pipeline weld joint according to any one of claims 1 to 4 and 6, wherein a telescopic arm connecting seat (3) is fixed on the machine head shell (9), and the passivation medium extrusion head (2) is fixedly connected with the telescopic arm connecting seat (3) through a passivation medium extrusion head adjusting device.

9. The passivation device for the inner surface of the stainless steel pipeline weld joint according to claim 8, wherein the passivation medium extrusion head adjusting device comprises a first extrusion telescopic arm (7), a second extrusion telescopic arm (8), a telescopic arm first fixing bolt (15) and a telescopic arm second fixing bolt (16), the first extrusion telescopic arm (7) and the second extrusion telescopic arm (8) are arranged in parallel, the top end of the first extrusion telescopic arm (7) is fixed on the telescopic arm connecting seat (3) through the telescopic arm first fixing bolt (15), the top end of the second extrusion telescopic arm (8) is separated from the top end of the first extrusion telescopic arm (7) by a certain gap, and the bottom end of the first extrusion telescopic arm (7) is fixedly connected with the bottom end of the second extrusion telescopic arm (8) through the telescopic arm second fixing bolt (16); an extrusion head adjusting chute (31) is formed in the second extrusion telescopic arm (8) along the length direction of the second extrusion telescopic arm, and the passivation medium extrusion head (2) is fixed in the extrusion head adjusting chute (31) through an extrusion head fixing bolt (25); and the head of the extrusion head fixing bolt (25) is positioned at one side of the second extrusion telescopic arm (8) close to the first extrusion telescopic arm (7), the tail of the extrusion head fixing bolt passes through the extrusion head adjusting chute (31) and is positioned at one side of the second extrusion telescopic arm (8) far away from the first extrusion telescopic arm (7), and the passivation medium extrusion head (2) is fixed at the tail of the extrusion head fixing bolt (25).

10. The passivation device for the inner surface of the stainless steel pipeline weld joint according to any one of claims 1 to 4, 6 and 9, wherein a camera (1) adjacent to the passivation medium extrusion head (2) is fixed on the machine head shell (9), the camera (1) is perpendicular to the machine head shell (9), and a lens of the camera is arranged outwards.

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