CN113578718A - Inner wall anticorrosion technology suitable for thin and short HDPE corrugated pipe - Google Patents
Inner wall anticorrosion technology suitable for thin and short HDPE corrugated pipe Download PDFInfo
- Publication number
- CN113578718A CN113578718A CN202110632267.2A CN202110632267A CN113578718A CN 113578718 A CN113578718 A CN 113578718A CN 202110632267 A CN202110632267 A CN 202110632267A CN 113578718 A CN113578718 A CN 113578718A
- Authority
- CN
- China
- Prior art keywords
- pipe
- double
- elastic film
- thin
- layer film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
- B05D7/222—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of pipes
- B05D7/225—Coating inside the pipe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C7/00—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The invention discloses an inner wall anticorrosion process suitable for a thin and short HDPE corrugated pipe, belonging to the field of corrugated pipe anticorrosion processes, abandoning the traditional spraying mode, and innovatively introducing a coating tool: many mouthfuls of protecgulums, lid behind double-deck membrane cover and the single mouthful, through the shape change that adopts the double-deck membrane cover of air current control, the supplementary inner wall anticorrosion technology who carries out thin short type HDPE bellows, make anticorrosive coating fully pack carefully between double-deck membrane cover and body, realize not having the blind spot and cover, and form even complete anticorrosive coating, and simultaneously, the use of lid behind the cooperation many mouthfuls of protecgulums and the single mouthful, realize anticorrosive coating's low flash rate and high rate of recovery, on the basis that does not increase anticorrosive coating cost, realize not having the blind spot to thin short type HDPE bellows, high-efficient coating process, great economic and practical benefit has.
Description
Technical Field
The invention relates to the field of corrugated pipe anticorrosion processes, in particular to an inner wall anticorrosion process suitable for a short HDPE corrugated pipe.
Background
The corrosion prevention of the pipe refers to the corrosion caused by the chemical reaction of the steel pipe in use and transportation under the influence of the use environment and the conveying medium. Corrosion is extremely damaging to metal pipes because the pipe, no matter how good the external coating is, how advanced the external corrosion protection process is, if internal corrosion protection is not performed, corrosion and premature failure can be caused. While the internal corrosion is concealed, the existence of the internal corrosion is often ignored by people. Meanwhile, due to the particularity of the conveying medium, the internal corrosion of the pipe is very serious and even far exceeds the external corrosion. Statistics show that up to now, the corrosion perforations of the inner wall of the pipeline account for ninety percent of the total corrosion perforations.
The coating technology in the pipe is the research focus of the corrosion prevention technology in the pipe, and the smaller the pipe diameter is, the more difficult the coating is, the coating film forming means is usually adopted in the prior art to form a corrosion prevention layer on the inner wall of the pipe, firstly, the method is difficult to uniformly and comprehensively spray the corrosion inhibitor on the inner wall of the pipe, secondly, the spraying method is easy to have blind spots on the pipe with the uneven inner wall like a corrugated pipe, and the comprehensive and uniform corrosion prevention layer is more difficult to form.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide an inner wall anticorrosion process suitable for a short HDPE corrugated pipe, which abandons the traditional spraying mode and innovatively introduces a coating tool: many mouthfuls of protecgulums, lid behind double-deck membrane cover and the single mouthful, through the shape change that adopts the double-deck membrane cover of air current control, the supplementary inner wall anticorrosion technology who carries out thin short type HDPE bellows, make anticorrosive coating fully pack carefully between double-deck membrane cover and body, realize not having the blind spot and cover, and form even complete anticorrosive coating, and simultaneously, the use of lid behind the cooperation many mouthfuls of protecgulums and the single mouthful, realize anticorrosive coating's low flash rate and high rate of recovery, on the basis that does not increase anticorrosive coating cost, realize not having the blind spot to thin short type HDPE bellows, high-efficient coating process, great economic and practical benefit has.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
An inner wall anticorrosion process suitable for a thin and short HDPE corrugated pipe comprises the following steps:
s1, preparing a coating tool: a multi-opening front cover, a double-layer film sleeve and a single-opening rear cover;
s2, sleeving the pipe body to be processed on the outer side of the double-layer film sleeve;
s3, pumping air out of the outer cavity of the double-layer film sleeve through the multi-port front cover to form a vacuum state, introducing air into the inner cavity of the double-layer film sleeve to expand the double-layer film sleeve to form a semi-open contact state with the inner wall of the tube body, and respectively sleeving the multi-port front cover and the single-port rear cover at two ends of the tube body;
s4, introducing sufficient anticorrosive paint between the double-layer film sleeve and the pipe body through the multi-opening front cover;
s5, pumping out a certain amount of air in the inner cavity of the double-layer film sleeve through the multi-opening front cover, introducing air into the outer cavity of the double-layer film sleeve to expand the double-layer film sleeve again, extruding the anticorrosive paint between the double-layer film sleeve and the pipe body to form a uniform and complete anticorrosive layer, and recovering redundant anticorrosive paint;
and S6, after the anticorrosive layer is cured, pumping out air in the inner cavity and the outer cavity of the double-layer film sleeve, and removing the air from the pipe body to finish the anticorrosive process.
The invention abandons the traditional spraying mode and innovatively introduces a coating tool: many mouthfuls of protecgulums, lid behind double-deck membrane cover and the single mouthful, through the shape change that adopts the double-deck membrane cover of air current control, the supplementary inner wall anticorrosion technology who carries out thin short type HDPE bellows, make anticorrosive coating fully pack carefully between double-deck membrane cover and body, realize not having the blind spot and cover, and form even complete anticorrosive coating, and simultaneously, the use of lid behind the cooperation many mouthfuls of protecgulums and the single mouthful, realize anticorrosive coating's low flash rate and high rate of recovery, on the basis that does not increase anticorrosive coating cost, realize not having the blind spot to thin short type HDPE bellows, high-efficient coating process, great economic and practical benefit has.
Further, double-deck film cover includes outer elastic film and interior elastic film, interior elastic film is located the inboard of outer elastic film, the outer fixed surface of interior elastic film is connected with a plurality of evenly distributed's arch.
Furthermore, many mouthfuls protecgulums include the protecgulum, gasbag before the inside wall fixedly connected with of protecgulum.
Further, the open ends of the outer elastic film and the inner elastic film are fixedly connected with the inner bottom surface of the front cover plate, the inner area of the inner elastic film is an inner cavity, the area between the outer elastic film and the inner elastic film is an outer cavity, in step S2, when air in the outer cavity (namely air in the area between the outer elastic film and the inner elastic film) is pumped out, the outer elastic film and the inner elastic film are tightly attached to each other, and because of the arrangement of the bulges, the outer elastic film is also attached to the outer surfaces of the bulges, so that the outer surfaces of the outer elastic film are uniformly distributed in a concave-convex shape, at the moment, air is introduced into the inner cavity (namely the inner elastic film), the outer elastic film and the inner elastic film expand together, so that the outer surfaces of the outer elastic film are in contact with the inner wall of the pipe body, and because of the concave-convex surface of the outer elastic film, the outer elastic film and the pipe body are not completely tightly attached, and a large gap exists between the outer elastic film and the inner elastic film, thus, a semi-open contact state is achieved.
Furthermore, an outer inflation tube, an inner inflation tube and a material conveying tube are fixedly connected to the front cover plate, valves are mounted on the outer inflation tube, the inner inflation tube and the material conveying tube, and the valves are used for controlling the opening and closing of the outer inflation tube, the inner inflation tube and the material conveying tube.
Furthermore, the outer inflation tube is communicated with the outer cavity, the inner inflation tube is communicated with the inner cavity, the material conveying tube is positioned outside the opening of the outer elastic film, the outer inflation tube is used for introducing or extracting air into the outer cavity formed by the outer elastic film and the inner elastic film, the inner inflation tube is used for introducing or extracting air into the inner area of the inner elastic film, namely the inner cavity, and the material conveying tube is used for introducing anticorrosive paint and recovering the anticorrosive paint.
Further, the single-port back cover includes the back shroud, the inside wall fixedly connected with back gasbag of back shroud, in step S2, overlap many mouthfuls protecgulums and single mouthfuls back cover respectively in the both ends of body, the protecgulum is fixed through preceding gasbag, the back shroud is fixed through back gasbag, because of preceding gasbag and back gasbag all have elastic deformation ability, consequently, preceding gasbag is extruded between front shroud and body, back gasbag is extruded between back shroud and body, preceding gasbag and back gasbag can adapt to the corrugated surface of body, closely laminate with the body, guarantee that anticorrosive paint is difficult for from here spilling over.
Further, the interior bottom surface fixedly connected with fixture block of back shroud, the one end fixedly connected with cutting ferrule of front shroud is kept away from to outer elastic film, the inside joint of fixture block and cutting ferrule through the cooperation of fixture block and cutting ferrule realizes that the connection of double-deck membrane cover and single-port back lid is fixed and convenient the dismantlement.
Further, a recovery pipe is fixedly connected to the rear cover plate, two ends of the recovery pipe are communicated with the outside, a pipe cover is in threaded connection with the outer end of the recovery pipe, and in the step S4, in the process of forming the uniform anticorrosive coating, the redundant anticorrosive paint is extruded from between the external elastic film and the pipe body, and can be discharged through the material conveying pipe and the recovery pipe respectively to realize recovery.
Further, the outer surface of the outer elastic film is coated with a release agent, so that the surface of the outer elastic film is smooth and clean and is easy to separate, and in step S5, when the double-layer film sleeve is removed from the pipe body, the formed anticorrosive layer is not easy to adhere to the outer elastic film, so that the integrity of the anticorrosive layer is ensured.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the traditional spraying mode is abandoned to this scheme, introduces the coating instrument innovatively: many mouthfuls of protecgulums, lid behind double-deck membrane cover and the single mouthful, through the shape change that adopts the double-deck membrane cover of air current control, the supplementary inner wall anticorrosion technology who carries out thin short type HDPE bellows, make anticorrosive coating fully pack carefully between double-deck membrane cover and body, realize not having the blind spot and cover, and form even complete anticorrosive coating, and simultaneously, the use of lid behind the cooperation many mouthfuls of protecgulums and the single mouthful, realize anticorrosive coating's low flash rate and high rate of recovery, on the basis that does not increase anticorrosive coating cost, realize not having the blind spot to thin short type HDPE bellows, high-efficient coating process, great economic and practical benefit has.
(2) In step S2, when air in the outer cavity (i.e., air in the region between the outer elastic film and the inner elastic film) is pumped out, the outer elastic film and the inner elastic film are tightly attached to each other, and due to the arrangement of the protrusions, the outer elastic film is also attached to the outer surface of the protrusions, so that the outer surface of the outer elastic film presents uniformly distributed concave-convex shapes, at this time, air is introduced into the inner cavity (i.e., the inner elastic film), the outer elastic film and the inner elastic film expand together, so that the outer surface of the outer elastic film is in contact with the inner wall of the tube body, and due to the concave-convex shape surface of the outer elastic film, the outer elastic film and the tube body are not completely and tightly attached to each other, and a large gap exists between the outer elastic film and the tube body, so that the outer elastic film and the inner elastic film are in a semi-open contact state.
(3) In step S2, when the two ends of the pipe body are respectively sleeved with the multi-opening front cover and the single-opening rear cover, the front cover plate is fixed through the front air bag, the rear cover plate is fixed through the rear air bag, and the front air bag and the rear air bag have elastic deformation capacity, so that the front air bag is extruded between the front cover plate and the pipe body, the rear air bag is extruded between the rear cover plate and the pipe body, the front air bag and the rear air bag can adapt to the corrugated outer surface of the pipe body and are tightly attached to the pipe body, and the anti-corrosion coating is ensured not to easily overflow from the pipe body.
(4) The interior bottom surface fixedly connected with fixture block of back shroud, the one end fixedly connected with cutting ferrule of front shroud is kept away from to outer elastic film, and the inside joint of fixture block and cutting ferrule through the cooperation of fixture block and cutting ferrule realizes that the connection of double-deck membrane cover and single mouthful back shroud is fixed and convenient the dismantlement.
(5) The interior bottom surface fixedly connected with fixture block of back shroud, the one end fixedly connected with cutting ferrule of front shroud is kept away from to outer elastic film, and the inside joint of fixture block and cutting ferrule through the cooperation of fixture block and cutting ferrule realizes that the connection of double-deck membrane cover and single mouthful back shroud is fixed and convenient the dismantlement.
(6) And in step S5, when the double-layer film sleeve is removed from the pipe body, the formed anticorrosive layer is not easy to adhere to the external elastic film, so that the integrity of the anticorrosive layer is ensured.
Drawings
FIG. 1 is a first perspective view of the present invention;
FIG. 2 is a second perspective view of the present invention;
FIG. 3 is a perspective view of the inner elastic film of the present invention;
FIG. 4 is a schematic front view of the present invention prior to use;
FIG. 5 is a schematic front view illustrating the operation of step S1 according to the present invention;
FIG. 6 is a schematic front view of the present invention during step S2;
FIG. 7 is a schematic front view of the present invention during step S3;
FIG. 8 is a schematic front view of the present invention during step S4;
fig. 9 is a schematic front view of the present invention when performing step S5.
The reference numbers in the figures illustrate:
31 front cover plate, 32 front air bag, 33 outer inflation tube, 34 inner inflation tube, 35 material conveying tube, 41 outer elastic film, 42 inner elastic film, 43 bulge, 44 cutting sleeve, 51 back cover plate, 52 back air bag, 53 recovery tube, 54 fixture block, n tube body and m anticorrosive layer.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection 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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
referring to fig. 1 and 3, an inner wall anticorrosion process for a short and thin HDPE corrugated pipe includes the following steps:
s1, preparing a coating tool: a multi-opening front cover, a double-layer film sleeve and a single-opening rear cover;
s2, sleeving the pipe body n to be processed on the outer side of the double-layer film sleeve, as shown in FIG. 5;
s3, extracting air from the outer cavity of the double-layer film sleeve through the multi-port front cover to form a vacuum state, introducing air into the inner cavity of the double-layer film sleeve to expand the double-layer film sleeve to form a semi-open contact state with the inner wall of the pipe body n, and respectively sleeving the multi-port front cover and the single-port rear cover at two ends of the pipe body n as shown in FIG. 6;
s4, introducing sufficient anticorrosive paint between the double-layer film sleeve and the pipe body n through the multi-opening front cover, as shown in figure 7;
s5, pumping out a certain amount of air in the inner cavity of the double-layer film sleeve through the multi-opening front cover, introducing air into the outer cavity of the double-layer film sleeve to expand the double-layer film sleeve again, extruding the anticorrosive paint between the double-layer film sleeve and the pipe body n to form a uniform and complete anticorrosive layer m, and recycling the redundant anticorrosive paint, as shown in FIG. 8;
s6, after the anticorrosive layer m is solidified, pumping out air in the inner cavity and the outer cavity of the double-layer film sleeve, and moving the double-layer film sleeve out of the pipe body n to finish the anticorrosive process, as shown in fig. 9.
Referring to fig. 4, the double-layered film cover includes an outer elastic film 41 and an inner elastic film 42, the inner elastic film 42 is located inside the outer elastic film 41, and a plurality of protrusions 43 are uniformly distributed and fixedly connected to an outer surface of the inner elastic film 42.
Referring to fig. 5 and 6, the multi-hole front cover includes a front cover plate 31, a front airbag 32 is fixedly connected to an inner sidewall of the front cover plate 31, open ends of an outer elastic membrane 41 and an inner elastic membrane 42 are fixedly connected to an inner bottom surface of the front cover plate 31, an inner region of the inner elastic membrane 42 is an inner cavity, and a region between the outer elastic membrane 41 and the inner elastic membrane 42 is an outer cavity, in step S2, when air in the outer cavity (i.e., air in the region between the outer elastic membrane 41 and the inner elastic membrane 42) is pumped out, the outer elastic membrane 41 and the inner elastic membrane 42 are tightly attached to each other, due to the arrangement of the protrusions 43, the outer elastic membrane 41 is also attached to an outer surface of the protrusions 43, so that the outer surface of the outer elastic membrane 41 presents uniformly distributed concave-convex shapes, at this time, air is introduced into the inner cavity (i.e., inside the inner elastic membrane 42), the outer elastic membrane 41 and the inner elastic membrane 42 are expanded together, so that the outer surface of the outer elastic membrane 41 is in contact with an inner wall of the tube body n, the surface of the external elastic film 41 having the uneven shape does not completely adhere to the pipe body n, and the external elastic film 41 and the pipe body n have a large gap therebetween, and thus the external elastic film is in a semi-open contact state.
An outer inflation pipe 33, an inner inflation pipe 34 and a material conveying pipe 35 are fixedly connected to the front cover plate 31, valves are mounted on the outer inflation pipe 33, the inner inflation pipe 34 and the material conveying pipe 35 and used for controlling the opening and closing of the outer inflation pipe 33, the inner inflation pipe 34 and the material conveying pipe 35, the outer inflation pipe 33 is communicated with the outer cavity, the inner inflation pipe 34 is communicated with the inner cavity, the material conveying pipe 35 is located on the outer side of the opening of the outer elastic film 41, the outer inflation pipe 33 is used for introducing or extracting air into or from the outer cavity formed by the outer elastic film 41 and the inner elastic film 42, the inner inflation pipe 34 is used for introducing or extracting air into or from the inner region, namely the inner cavity, of the inner elastic film 42, and the material conveying pipe 35 is used for introducing anticorrosive paint and recycling the anticorrosive paint.
Referring to fig. 6, the single-port rear cover includes a rear cover plate 51, a rear airbag 52 is fixedly connected to an inner sidewall of the rear cover plate 51, and in step S2, when the multi-port front cover and the single-port rear cover are respectively sleeved at two ends of the pipe n, the front cover plate 31 is fixed by the front airbag 32, and the rear cover plate 51 is fixed by the rear airbag 52, so that the front airbag 32 and the rear airbag 52 both have elastic deformation capability, and therefore, the front airbag 32 is squeezed between the front cover plate 31 and the pipe n, and the rear airbag 52 is squeezed between the rear cover plate 51 and the pipe n, and the front airbag 32 and the rear airbag 52 can adapt to a corrugated outer surface of the pipe n and tightly adhere to the pipe n, thereby ensuring that the anticorrosive paint is not easily spilled therefrom.
Referring to fig. 4 and 5, a clamping block 54 is fixedly connected to the inner bottom surface of the rear cover plate 51, a clamping sleeve 44 is fixedly connected to one end of the outer elastic film 41 away from the front cover plate 31, the clamping block 54 is clamped with the inside of the clamping sleeve 44, and the clamping block 54 and the clamping sleeve 44 are matched to realize connection and fixation of the double-layer film sleeve and the single-opening rear cover and convenient detachment.
Referring to fig. 8, a recovery pipe 53 is fixedly connected to the rear cover plate 51, both ends of the recovery pipe 53 are communicated with the outside, a pipe cover is screwed to the outer end of the recovery pipe 53, in step S4, in the process of forming the uniform anti-corrosion layer m, the excess anti-corrosion paint is extruded from between the external elastic film 41 and the pipe body n, and can be discharged through the feed pipe 35 and the recovery pipe 53 respectively to realize recovery, and in the process of introducing the anti-corrosion paint in step S3, the recovery pipe 53 is sealed by the pipe cover.
Referring to fig. 8 and 9, the outer surface of the outer elastic film 41 is coated with a release agent to make the outer elastic film 41 smooth and clean and easy to be separated, and in step S5, when the double-layered film sleeve is removed from the pipe body n, the formed corrosion protection layer m is not easily adhered to the outer elastic film 41, thereby ensuring the integrity of the corrosion protection layer m.
The invention abandons the traditional spraying mode and innovatively introduces a coating tool: many mouthfuls of protecgulums, lid behind double-deck membrane cover and the single mouthful, through the shape change that adopts the double-deck membrane cover of air current control, the supplementary inner wall anticorrosion technology who carries out thin short type HDPE bellows, make anticorrosive coating fully pack carefully between double-deck membrane cover and body n, realize not having the blind spot and cover, and form even complete anticorrosive coating m, simultaneously, the use of lid behind the cooperation many mouthfuls of protecgulums and the single mouthful, realize anticorrosive coating's low flash rate and high rate of recovery, on the basis that does not increase anticorrosive coating cost, realize not having the blind spot to thin short type HDPE bellows, high-efficient coating process, great economic and practical benefit has.
Supplementary explanation: the invention provides an inner wall anticorrosion process suitable for a thin and short HDPE corrugated pipe, namely a pipe body n is a corrugated pipe, and the inner wall and the outer wall of the pipe body n are both in uneven corrugated shapes.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (10)
1. An inner wall anticorrosion process suitable for a thin and short HDPE corrugated pipe is characterized in that: the method comprises the following steps:
s1, preparing a coating tool: a multi-opening front cover, a double-layer film sleeve and a single-opening rear cover;
s2, sleeving the pipe body (n) to be processed on the outer side of the double-layer film sleeve;
s3, pumping air out of the outer cavity of the double-layer film sleeve through the multi-port front cover to form a vacuum state, introducing air into the inner cavity of the double-layer film sleeve to expand the double-layer film sleeve to form a semi-open contact state with the inner wall of the pipe body (n), and respectively sleeving the multi-port front cover and the single-port rear cover at two ends of the pipe body (n);
s4, introducing sufficient anticorrosive paint between the double-layer film sleeve and the pipe body (n) through the multi-opening front cover;
s5, pumping out a certain amount of air in the inner cavity of the double-layer film sleeve through the multi-opening front cover, introducing air into the outer cavity of the double-layer film sleeve to expand the double-layer film sleeve again, extruding the anticorrosive paint between the double-layer film sleeve and the pipe body (n) to form a uniform and complete anticorrosive layer (m), and recovering the redundant anticorrosive paint;
s6, after the anticorrosive layer (m) is solidified, pumping out air in the inner cavity and the outer cavity of the double-layer film sleeve, and moving the double-layer film sleeve out of the pipe body (n) to finish the anticorrosive process.
2. The inner wall anticorrosion process suitable for the thin and short HDPE corrugated pipe in claim 1, characterized in that: the double-layer film sleeve comprises an outer elastic film (41) and an inner elastic film (42), the inner elastic film (42) is located on the inner side of the outer elastic film (41), and a plurality of uniformly distributed bulges (43) are fixedly connected to the outer surface of the inner elastic film (42).
3. The inner wall anticorrosion process suitable for the thin and short HDPE corrugated pipe in claim 2, characterized in that: the multi-opening front cover comprises a front cover plate (31), and a front air bag (32) is fixedly connected to the inner side wall of the front cover plate (31).
4. The inner wall anticorrosion process suitable for the thin and short HDPE corrugated pipe in claim 3, characterized in that: the opening ends of the outer elastic film (41) and the inner elastic film (42) are fixedly connected with the inner bottom surface of the front cover plate (31), the inner area of the inner elastic film (42) is an inner cavity, and the area between the outer elastic film (41) and the inner elastic film (42) is an outer cavity.
5. The inner wall anticorrosion process suitable for the thin and short HDPE corrugated pipe in claim 4 is characterized in that: the air-conditioning unit is characterized in that an outer inflation pipe (33), an inner inflation pipe (34) and a material conveying pipe (35) are fixedly connected to the front cover plate (31), and valves are mounted on the outer inflation pipe (33), the inner inflation pipe (34) and the material conveying pipe (35).
6. The inner wall anticorrosion process suitable for the thin and short HDPE corrugated pipe in claim 5 is characterized in that: the outer inflation tube (33) is communicated with the outer cavity, the inner inflation tube (34) is communicated with the inner cavity, and the material conveying tube (35) is positioned outside the opening of the outer elastic film (41).
7. The inner wall anticorrosion process suitable for the thin and short HDPE corrugated pipe in claim 3, characterized in that: the single-opening rear cover comprises a rear cover plate (51), and a rear air bag (52) is fixedly connected to the inner side wall of the rear cover plate (51).
8. The inner wall anticorrosion process suitable for the thin and short HDPE corrugated pipe in claim 7 is characterized in that: the inner bottom surface of the rear cover plate (51) is fixedly connected with a clamping block (54), one end, far away from the front cover plate (31), of the outer elastic film (41) is fixedly connected with a clamping sleeve (44), and the clamping block (54) is clamped with the inside of the clamping sleeve (44).
9. The inner wall anticorrosion process suitable for the thin and short HDPE corrugated pipe in claim 7 is characterized in that: the rear cover plate (51) is fixedly connected with a recovery pipe (53), two ends of the recovery pipe (53) are communicated with the outside, and the outer end of the recovery pipe (53) is in threaded connection with a pipe cover.
10. The inner wall anticorrosion process suitable for the thin and short HDPE corrugated pipe in claim 2, characterized in that: and the outer surface of the outer elastic film (41) is coated with a release agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110632267.2A CN113578718A (en) | 2021-06-07 | 2021-06-07 | Inner wall anticorrosion technology suitable for thin and short HDPE corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110632267.2A CN113578718A (en) | 2021-06-07 | 2021-06-07 | Inner wall anticorrosion technology suitable for thin and short HDPE corrugated pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113578718A true CN113578718A (en) | 2021-11-02 |
Family
ID=78243515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110632267.2A Withdrawn CN113578718A (en) | 2021-06-07 | 2021-06-07 | Inner wall anticorrosion technology suitable for thin and short HDPE corrugated pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113578718A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115025937A (en) * | 2022-08-15 | 2022-09-09 | 南通金易升金属科技有限公司 | Leak protection coating device is used in processing of motorcycle oil tank inner wall |
| CN116159715A (en) * | 2023-01-05 | 2023-05-26 | 民胜电气有限公司 | Gum dipping processing system in electric control box |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521413A (en) * | 2013-10-08 | 2014-01-22 | 番禺珠江钢管（连云港）有限公司 | On-line anticorrosive coating spraying technology for steel pipe |
| CN111921795A (en) * | 2020-07-15 | 2020-11-13 | 林菊香 | Anticorrosive coating device of inside pipe wall suitable for bellows |
| CN112439678A (en) * | 2019-09-03 | 2021-03-05 | 中国石油天然气集团有限公司 | Anticorrosion coating process in oil casing |
-
2021
- 2021-06-07 CN CN202110632267.2A patent/CN113578718A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103521413A (en) * | 2013-10-08 | 2014-01-22 | 番禺珠江钢管（连云港）有限公司 | On-line anticorrosive coating spraying technology for steel pipe |
| CN112439678A (en) * | 2019-09-03 | 2021-03-05 | 中国石油天然气集团有限公司 | Anticorrosion coating process in oil casing |
| CN111921795A (en) * | 2020-07-15 | 2020-11-13 | 林菊香 | Anticorrosive coating device of inside pipe wall suitable for bellows |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115025937A (en) * | 2022-08-15 | 2022-09-09 | 南通金易升金属科技有限公司 | Leak protection coating device is used in processing of motorcycle oil tank inner wall |
| CN116159715A (en) * | 2023-01-05 | 2023-05-26 | 民胜电气有限公司 | Gum dipping processing system in electric control box |
| CN116159715B (en) * | 2023-01-05 | 2023-11-14 | 民胜电气有限公司 | Gum dipping processing system in electric control box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113578718A (en) | Inner wall anticorrosion technology suitable for thin and short HDPE corrugated pipe | |
| EP1089369A2 (en) | Heat exchanger for cooling circulating water of fuel cells & process for producing same | |
| WO2009025199A1 (en) | Battery and method of producing the same | |
| US11056742B2 (en) | Housing part of a battery cell or for a battery cell and method for applying a rupture element to a housing part of a battery cell | |
| EP1387119B1 (en) | Manufacturing method for a flange coupling | |
| CN201380018Y (en) | Oil-gas separation filter core | |
| CN211520331U (en) | Flexible pipe container formed by multi-layer co-extrusion once | |
| JP2000283692A (en) | Neck filler, and water pouring structure | |
| CN208023087U (en) | Plugging structure for lining process of inner container | |
| CN207239778U (en) | A kind of air-actuated jaw cleaning apparatus for self and automatically cleaning air-actuated jaw | |
| EP1331465A3 (en) | Heat exchanger having thin tube plate with improved structure | |
| JP5098708B2 (en) | Gas supply pipe unit for plasma processing | |
| JP5436028B2 (en) | Resist solution recovery method | |
| CN2445802Y (en) | Material dispensing tube | |
| CN219076566U (en) | Orifice plate lining rubber tool | |
| CN218291086U (en) | Vacuum cavity without sealing groove | |
| CN109352284A (en) | Anti-corrosion chemical industry equipment manufacturing process | |
| EP3476981B1 (en) | Mandrel for electroforming | |
| CN217895593U (en) | Filtering type sperm separator for bovine sperm | |
| CN212195988U (en) | Foot-operated packing controlling means | |
| CN109747947B (en) | Drawing tube for artistic design drawing | |
| JPH08203489A (en) | Sealed lead-acid battery | |
| CN212311907U (en) | Auxiliary assembling tool for positioning buckle of automobile combined lamp | |
| CN218440658U (en) | Detachable poppet valve | |
| CN218199416U (en) | High-density cold extrusion aluminum bottle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20211102 |
|
| WW01 | Invention patent application withdrawn after publication |