CN113894665A

CN113894665A - Anticorrosion treatment process for pipeline welding port for chemical sewage delivery

Info

Publication number: CN113894665A
Application number: CN202111042922.5A
Authority: CN
Inventors: 陈彦防; 陈玉哲; 陈广廷; 陈晓坤; 张朝月; 王绍
Original assignee: Individual
Current assignee: Tianxing Advanced Materials Technology Suzhou Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-01-07
Anticipated expiration: 2041-09-07
Also published as: CN113894665B

Abstract

The invention discloses an anticorrosion treatment process for a welding port of a pipeline for chemical sewage delivery, which belongs to the technical field of anticorrosion treatment, and the anticorrosion treatment process for the welding port of the pipeline for chemical sewage delivery comprises the steps of utilizing an expansion air bag to extrude the inner wall of the pipeline to limit a device, enabling the device to adapt to pipelines with different sizes, utilizing a polishing module to polish the welding joint, effectively removing welding slag flowing into the interior of a joint during welding, improving the smoothness degree of the inner wall of the pipeline, reducing the contact area of the pipeline and chemical liquid, utilizing an electric expansion bag to expand and extrude phosphating liquid to be sprayed out from a spray head, matching with the rotation of a motor, enabling the phosphating liquid to be uniformly sprayed at the joint of the inner wall of the pipeline, finally utilizing the expansion air bag to remove redundant phosphating liquid, and avoiding the corrosion resistance of the pipeline from being reduced by the redundant phosphating liquid as much as possible.

Description

Anticorrosion treatment process for pipeline welding port for chemical sewage delivery

Technical Field

The invention relates to the field of anticorrosion treatment, in particular to an anticorrosion treatment process for a pipeline welding port for chemical sewage delivery.

Background

Description of corrosion phenomena of pipes corrosion is understood to be a chemical reaction of the material in the environment in which it is located, which reaction causes the loss of pipe material and leads to the failure of pipe components and even of the entire pipe system, in which corrosion is defined as: based on the specific pipeline environment, chemical reactions, electrochemical reactions and microbial attack occur in all metallic and non-metallic materials of the pipeline system, which reactions can lead to damage and loss of pipeline structure and other materials

Because chemical wastewater composition is comparatively complicated and has higher corrosivity, metal pipeline often adopts the welding mode to connect in the joint department, and the welded joint is destroyed by the corruption more easily, and carries chemical wastewater's pipeline and is mostly in complicated soil environment, in case the pipeline is corroded the perforation, causes chemical wastewater's the revealing promptly, not only makes the transportation interrupt, can serious polluted environment moreover, probably arouses personnel's poisoning even.

Therefore, the anticorrosion treatment process for the welding port of the pipeline for chemical sewage delivery is provided to effectively solve the problems in the prior art.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide an anticorrosion treatment process for a welding port of a pipeline for chemical sewage conveying, wherein an expansion air bag is utilized to keep the device stable on the inner wall of the pipeline, the practicability of the device is improved, secondly, an anticorrosion treatment assembly is utilized to be matched with a motor to rotate so as to clean the joint inside the pipeline, a scrap collecting disc is matched to clean the scraps generated by polishing, the pollution to the inside of the pipeline is reduced, the practicability of the device is improved, and finally, an electric expansion bag is utilized to uniformly coat phosphating solution on the joint of the inner wall of the pipeline, so that the anticorrosion capability of the joint of the inner wall of the pipeline is improved.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

An anticorrosion treatment process for a pipeline welding port for chemical sewage delivery comprises the following steps:

s1, preparation: firstly, preparing a left shell and a right shell of which the outer walls are provided with expansion air bags, rotatably installing an anti-corrosion treatment assembly between the left shell and the right shell, installing a motor for driving the anti-corrosion treatment assembly on the inner wall of the right shell, wherein the anti-corrosion treatment assembly consists of a liquid storage ring and a plurality of polishing modules which are annularly distributed on the end wall of the liquid storage ring, and an electric expansion bag is attached to the inner wall of the liquid storage ring;

FIG. 11 is a cross-sectional view of the corrosion protection assembly of the present invention in an operative condition;

fig. 12 is a sectional view of the main body of the present invention in an operating state.

S2, injecting phosphating solution into the liquid storage ring by a worker, then respectively placing the left shell and the right shell into the pipeline of which the two sides need to be welded, controlling the expansion air bag to expand and tightly attach to the inner wall of the pipeline, and adjusting the polishing module to attach the outer end wall of the polishing module to the position of the pipeline needing to be welded;

s3, after polishing is finished, the worker controls the polishing module to contract, and controls the electric expansion bag to expand to enable phosphating solution to be sprayed out through the spray head, meanwhile, the solution storage ring rotates slowly along with the motor to enable the phosphating solution to be sprayed more uniformly, and the polished seam is subjected to phosphating treatment;

s4, waiting for about one minute, completing phosphating treatment, controlling the volume of the expansion airbag to be reduced, enabling the expansion airbag to slide with the inner wall of the pipeline, controlling the polishing module to reset, pulling the device outwards through a traction rope connected to the right shell, and cleaning redundant phosphating solution in the pipeline by using the expansion airbag.

Furthermore, air pumps are arranged inside the left shell and the right shell, the expansion air bags are annularly arranged on the outer walls of the left shell and the right shell and connected with the air outlet ends of the air pumps, and each expansion air bag comprises an inner layer made of rubber materials and an outer layer made of cotton and linen materials.

Furthermore, the electric expansion capsule is composed of an external capsule and an electric active polymer filled in the external capsule, the electric active polymer is electrically connected with an external power supply through an external controller, and the phosphating solution is filled in the inner part of the liquid storage ring.

Further, the polishing module comprises a sliding sleeve, a sliding rod and polishing petals, the sliding sleeve is arranged on the outer side of the liquid storage ring in an annular equal distance mode, the sliding rod is connected inside the sliding sleeve in a sliding mode, the polishing petals are fixedly connected to the sliding rod and far away from one end of the liquid storage ring, an annular electromagnet is arranged on one side, close to the rotating shaft, of the sliding sleeve, and a permanent magnet corresponding to the annular electromagnet in position is arranged on one end, close to the rotating shaft, of the sliding rod.

Furthermore, a slide way penetrating through the upper end and the lower end of the slide rod is arranged in the middle of the slide rod, a plurality of liquid guide pipes corresponding to the slide way are arranged on the side wall of the liquid storage ring, and an annular sealing sleeve is arranged at one end, far away from the rotating shaft, of each liquid guide pipe.

Furthermore, the polishing valve is provided with a communicating hole corresponding to the slide way, and a one-way valve is arranged in the communicating hole.

Furthermore, left side casing lateral wall is equipped with the piece and collects the dish, and the piece is collected the dish and is included metal disc and rather than a plurality of permanent magnet posts and the spliced pole of fixed connection.

Furthermore, a plurality of fan blades are annularly and equidistantly arranged on the side wall of the liquid storage ring, and the fan blades are made of glass fiber materials.

Furthermore, the outer wall of the liquid storage ring is provided with a liquid supplementing hole, and a rubber seal is arranged in the liquid supplementing hole.

Furthermore, a plurality of vent holes are formed in one side, far away from the right shell, of the left shell.

3. Advantageous effects

Compare and present advantage lie in:

(1) this scheme utilization expansion gasbag extrusion pipe inner wall is spacing to the device, make the device can adapt to not unidimensional pipeline, secondly, the module of polishing is utilized to polish the welding seam, the inside welding slag of inflow joint effectively clears away during welding, improve the smooth degree of pipe inner wall, the area of contact of pipeline with chemical liquid has been reduced, then, utilize the inflation of electrical property bag to extrude bonderizing liquid and make it spout from the shower nozzle, the rotatory even spraying of cooperation motor makes it at pipe inner wall seam crossing, and finally, utilize the expansion gasbag to clear away unnecessary bonderizing liquid, avoid unnecessary bonderizing liquid to reduce the corrosion resistance of pipeline as far as possible.

(2) This scheme all is equipped with the air pump in left casing and right casing inside, left casing and right casing outer wall are located to the equal ring shape of expansion gasbag and are given vent to anger the end with the air pump and be connected, the expansion gasbag is including the inlayer that adopts rubber materials to make and the skin that the cotton-flax material was made, utilize the air pump to make expansion gasbag inflation and extrusion pipeline inner wall, make the device at the pipeline inside stable and the pipeline that adapts to multiple size, the skin of cotton-flax material can increase frictional force, and can absorb unnecessary phosphating solution, effectively avoid unnecessary phosphating solution to cause pipeline corrosion resistance to descend.

(3) The electric property inflation bag in this scheme comprises outside cyst and the inside electroactive polymer who fills thereof, and electroactive polymer passes through external controller and external power electric connection, and the bonderizing liquid is filled inside the stock solution ring, thereby utilizes the expansion characteristic extrusion cyst of electroactive polymer to extrude the bonderizing liquid from the stock solution ring.

(4) The module of polishing in this scheme includes the sliding sleeve, litter and the lamella of polishing, the annular equidistance of sliding sleeve sets up in the stock solution ring outside, litter sliding connection is inside the sliding sleeve, lamella fixed connection of polishing keeps away from stock solution ring one end in the litter, the sliding sleeve is close to pivot one side and is equipped with annular electromagnet, the litter is close to pivot one end and is equipped with the permanent magnet that corresponds with annular electromagnet position, utilize the repulsion force that produces between centrifugal force cooperation electro-magnet that the motor rotation produced and the permanent magnet, drive the litter outside motion and closely laminate with the pipeline inner wall of different pipe diameters, efficiency and the practicality of polishing have been improved.

(5) This scheme is through being equipped with piece catch tray at left casing lateral wall, and piece catch tray includes metal disc and rather than a plurality of permanent magnetism posts and the spliced pole of fixed connection, and the metal piece that the metal disc can be better adsorbed production is joined in marriage to permanent magnetism post, and it pollutes inside the pipeline to reduce the metal piece.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is an exploded view of the main structure of the present invention;

FIG. 3 is a schematic view of the corrosion protection assembly of the present invention;

FIG. 4 is a schematic cross-sectional view of a corrosion protection assembly of the present invention;

FIG. 5 is an enlarged view of the point A in FIG. 4;

FIG. 6 is an enlarged view of the point B in FIG. 4;

FIG. 7 is a schematic cross-sectional view of the right housing of the present invention;

FIG. 8 is a schematic structural view of the present invention in a sanding operation;

FIG. 9 is a schematic view of the anticorrosion treatment assembly of the invention in an operating state;

fig. 10 is a schematic view of the structure of the junction of the left housing and the debris collection pan of the present invention.

The reference numbers in the figures illustrate:

1 left shell, 2 right shell, 3 rotating shaft, 4 motor, 5 expanding air bag, 6 antiseptic treatment component, 61 liquid storage ring, 611 electric expansion bag, 612 liquid guide pipe, 62 grinding module, 621 sliding sleeve, 622 sliding rod, 623 grinding flap, 7 debris collecting disc, 71 metal disc, 72 permanent magnet column, 73 connecting column,

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection can be direct connection or indirect connection through an intermediate medium, and can be communication inside the model adapting element. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-5, a process for corrosion protection treatment of a welded joint of a pipeline for chemical sewage delivery includes the following steps:

s1, preparation: firstly, preparing a left shell 1 and a right shell 2, wherein the outer walls of the left shell 1 and the right shell 2 are both provided with an expansion air bag 5, an anti-corrosion treatment assembly 6 is rotatably arranged between the left shell 1 and the right shell 2, a motor 4 for driving the anti-corrosion treatment assembly 6 is arranged on the inner wall of the right shell 2, the anti-corrosion treatment assembly 6 consists of a liquid storage ring 61 and a plurality of polishing modules 62 which are annularly distributed on the end wall of the liquid storage ring 61, and an electric expansion bag 611 is attached to the inner wall of the liquid storage ring 61;

s2, please refer to FIGS. 6-9, the worker injects the phosphating solution into the liquid storage ring 61, then places the left shell 1 and the right shell 2 in the pipeline whose two sides need to be welded respectively, controls the expansion air bag 5 to expand and tightly attach to the inner wall of the pipeline, adjusts the polishing module 62 to attach the outer end wall to the position where the pipeline needs to be welded;

left side casing 1 and right casing 2 are inside all to be equipped with the air pump, left side casing 1 and right casing 2 outer wall are located to the equal ring shape of expansion gasbag 5 and are given vent to anger the end with the air pump and be connected, expansion gasbag 5 is including the inlayer that adopts rubber materials to make and the skin that the cotton-flax material was made, utilize the air pump to make expansion gasbag 5 inflation and extrusion pipeline inner wall, make the device at the pipeline inside remain stable and the pipeline that adapts to multiple size, the skin of cotton-flax material can increase frictional force, and can absorb unnecessary phosphating solution, effectively avoid unnecessary phosphating solution to cause the pipeline corrosion resistance to descend.

Polishing module 62 includes sliding sleeve 621, litter 622 and the lamella 623 of polishing, the annular equidistance of sliding sleeve 621 sets up in the liquid storage ring 61 outside, litter 622 sliding connection is inside sliding sleeve 621, lamella 623 fixed connection is kept away from liquid storage ring 61 one end in litter 622, sliding sleeve 621 is close to pivot 3 one side and is equipped with annular electromagnet, litter 622 is close to pivot 3 one end and is equipped with the permanent magnet 72 that corresponds with annular electromagnet position, utilize the rotatory centrifugal force that produces of motor 4 to cooperate the repulsive force that produces between electromagnet and the permanent magnet 72, with litter 622 drive the lamella 623 of polishing outwards move and closely laminate with the pipe inner wall of different pipe diameters, efficiency and the practicality of polishing have been improved.

The middle position of the slide rod 622 is provided with a slide way penetrating through the upper end and the lower end thereof, the side wall of the liquid storage ring 61 is provided with a plurality of liquid guide pipes 612 corresponding to the slide way, and one end of the liquid guide pipe 612 far away from the rotating shaft 3 is provided with an annular sealing sleeve.

Referring to fig. 10, a scrap collecting tray 7 is disposed on a side wall of the left housing 1, the scrap collecting tray 7 includes a metal tray 71 and a plurality of permanent magnetic columns and connecting columns 73 fixedly connected to the metal tray, and the permanent magnetic columns cooperate with the metal tray 71 to better adsorb generated metal scraps, thereby reducing pollution of the metal scraps on the inside of the duct.

S3, after polishing, the worker controls the polishing module 62 to contract, controls the electric expansion bag 611 to expand to enable phosphating solution to be sprayed out through the spray head, and controls the solution storage ring 61 to slowly rotate along with the motor 4 to enable the phosphating solution to be sprayed more uniformly, so that the polished seam is subjected to phosphating treatment;

the electrically expandable balloon 611 is composed of an outer balloon and an electroactive polymer filled in the outer balloon, the electroactive polymer is electrically connected with an external power supply through an external controller, the phosphating solution is filled in the liquid storage ring 61, and the balloon is extruded by utilizing the expansion characteristic of the electroactive polymer so as to extrude the phosphating solution from the liquid storage ring 61.

S4, please refer to FIG. 11, when the phosphating treatment is finished for about 20 minutes, the volume of the expanding air bag 5 is controlled to be reduced, so that the expanding air bag and the inner wall of the pipeline can slide, the polishing module 62 is controlled to reset at the same time, the device is pulled outwards through the traction rope connected to the right shell 2, and the expanding air bag 5 is used for cleaning redundant phosphating solution in the pipeline.

What need supply here is that the liquid storage ring 61 outer wall is equipped with the fluid infusion hole, and the fluid infusion downthehole portion is equipped with rubber and seals, and left casing 1 keeps away from 2 one sides of right casing and is equipped with a plurality of ventilation holes for the inside air of pipeline can free flow, the piece that better filtration friction produced.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a chemical industry is pipeline welding mouth anticorrosive treatment technology for sewage transport which characterized in that: the method comprises the following steps:

s1, preparation: firstly, preparing a left shell (1) and a right shell (2) of which the outer walls are provided with expansion air bags (5), rotatably installing an anti-corrosion treatment assembly (6) between the left shell (1) and the right shell (2), installing a motor (4) for driving the anti-corrosion treatment assembly (6) on the inner wall of the right shell (2), wherein the anti-corrosion treatment assembly (6) consists of a liquid storage ring (61) and a plurality of polishing modules (62) which are annularly distributed on the end wall of the liquid storage ring, and an electric expansion bag (611) is attached to the inner wall of the liquid storage ring (61);

s2, a worker injects phosphating solution into the liquid storage ring (61), then the left shell (1) and the right shell (2) are respectively arranged in the pipeline of which two sides need to be welded, the expansion air bag (5) is controlled to expand and tightly fit with the inner wall of the pipeline, and the polishing module (62) is adjusted to fit the outer end wall of the pipeline at the position needing to be welded;

s3, after polishing is finished, a worker controls the polishing module (62) to contract, and controls the electric expansion bag (611) to expand to enable phosphating solution to be sprayed out through the spray head, meanwhile, the solution storage ring (61) rotates slowly along with the motor (4), so that the phosphating solution is sprayed more uniformly, and the polished seam is subjected to phosphating treatment;

s4, waiting for 20 minutes and completing phosphating treatment, controlling the volume of the expansion air bag (5) to be reduced, enabling the expansion air bag and the inner wall of the pipeline to slide, controlling the polishing module (62) to reset, pulling the device outwards through a traction rope connected to the right shell (2), and cleaning redundant phosphating solution in the pipeline by using the expansion air bag (5).

2. The chemical industry is pipeline welding mouth anticorrosive treatment process for sewage conveying according to claim 1, characterized in that: the air pump is arranged inside the left shell (1) and the right shell (2), the expansion air bag (5) is annularly arranged on the outer wall of the left shell (1) and the outer wall of the right shell (2) and is connected with the air pump air outlet end, and the expansion air bag (5) comprises an inner layer made of rubber materials and an outer layer made of cotton and linen materials.

3. The chemical industry is pipeline welding mouth anticorrosive treatment process for sewage conveying according to claim 1, characterized in that: the electrically-expandable bladder (611) consists of an outer bladder and an electroactive polymer filled in the outer bladder, the electroactive polymer is electrically connected with an external power supply through an external controller, and the phosphating solution is filled in the liquid storage ring (61).

4. The chemical industry is pipeline welding mouth anticorrosive treatment process for sewage conveying according to claim 3, characterized in that: polishing module (62) include sliding sleeve (621), litter (622) and polish lamella (623), sliding sleeve (621) annular equidistance sets up in the liquid storage ring (61) outside, litter (622) sliding connection is inside sliding sleeve (621), it keeps away from liquid storage ring (61) one end to polish lamella (623) fixed connection in litter (622), sliding sleeve (621) are close to pivot (3) one side and are equipped with the annular electromagnet, litter (622) are close to pivot (3) one end and are equipped with the permanent magnet that corresponds with the annular electromagnet position.

5. The chemical industry is pipeline welding mouth anticorrosive treatment process for sewage conveying according to claim 4, characterized in that: the middle position of the sliding rod (622) is provided with a slide way penetrating through the upper end and the lower end of the sliding rod, the side wall of the liquid storage ring (61) is provided with a plurality of liquid guide pipes (612) corresponding to the slide way, and one end of each liquid guide pipe (612) far away from the rotating shaft (3) is provided with an annular sealing sleeve.

6. The chemical industry is pipeline welding mouth anticorrosive treatment process for sewage conveying according to claim 5, characterized in that: the polishing valve (623) is provided with a communicating hole corresponding to the slide way, and a one-way valve is arranged in the communicating hole.

7. The chemical industry is pipeline welding mouth anticorrosive treatment process for sewage conveying according to claim 1, characterized in that: the side wall of the left shell (1) is provided with a debris collection disc (7), and the debris collection disc (7) comprises a metal disc (71) and a plurality of permanent magnet columns (72) and connecting columns (73) which are fixedly connected with the metal disc.

8. The chemical industry is pipeline welding mouth anticorrosive treatment process for sewage conveying according to claim 1, characterized in that: the liquid storage ring (61) side wall annular equidistance is equipped with a plurality of flabellums, the flabellum adopts the glass fiber material to make.

9. The chemical industry is pipeline welding mouth anticorrosive treatment process for sewage conveying according to claim 1, characterized in that: the outer wall of the liquid storage ring (61) is provided with a liquid supplementing hole, and a rubber seal is arranged in the liquid supplementing hole.

10. The chemical industry is pipeline welding mouth anticorrosive treatment process for sewage conveying according to claim 1, characterized in that: and a plurality of vent holes are formed in one side, far away from the right shell (2), of the left shell (1).