CN110608348A - Anti-corrosion device for diffusing three-way pipe and processing and using method thereof - Google Patents
Anti-corrosion device for diffusing three-way pipe and processing and using method thereof Download PDFInfo
- Publication number
- CN110608348A CN110608348A CN201910787545.4A CN201910787545A CN110608348A CN 110608348 A CN110608348 A CN 110608348A CN 201910787545 A CN201910787545 A CN 201910787545A CN 110608348 A CN110608348 A CN 110608348A
- Authority
- CN
- China
- Prior art keywords
- pipe
- shrinkable
- sealing heat
- heat
- diffusing
- 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.)
- Pending
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims description 12
- 238000007789 sealing Methods 0.000 claims abstract description 55
- 238000009792 diffusion process Methods 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 16
- 238000003466 welding Methods 0.000 claims description 7
- 230000037452 priming Effects 0.000 claims description 4
- 230000001680 brushing effect Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000740 bleeding effect Effects 0.000 claims 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/38—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses
- B29C63/42—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses using tubular layers or sheathings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
- F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
- F16L58/1063—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe the coating being a sheet wrapped around the pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
- F16L58/188—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for branching pipes; for joining pipes to walls
Abstract
The invention discloses an anti-corrosion device for a diffusing three-way pipe, which is characterized by mainly comprising a main pipe, a diffusing pipe and a sealing heat-shrinkable tape, wherein the diffusing pipe is vertically welded on the main pipe, the center of the sealing heat-shrinkable tape is provided with a central hole, the central hole penetrates through the diffusing pipe and wraps the joint of the main pipe and the diffusing pipe, and the height of the sealing heat-shrinkable tape at the wrapping position of the diffusing pipe is 3 ~ 4 cm.
Description
Technical Field
The invention relates to the field of gas pipeline accessories, in particular to an anti-corrosion device for a three-way diffusing pipe and a processing and using method thereof.
Background
At present, buried gas pipelines in the market mainly use PE pipes, but at key nodes of the buried pipelines, steel pipe fittings are inevitably needed to be used, such as: the gate valve, the steel-plastic conversion, and the steel pipes and the steel tee joint for the diffusion at the junction of the gate valve and the steel-plastic conversion are all anti-corrosion technologies, and the anti-corrosion effect is good, so that the self-control anti-corrosion of the steel pipes and the steel tee joint for the diffusion at the junction of the gate valve and the steel-plastic conversion is very important, and great potential safety hazards can be generated once the anti-corrosion is unqualified.
The anti-corrosion process of the steel pipe at the diffusing part is generally as follows: welding, derusting, priming, winding a 3PE hot winding belt on a main pipeline, winding a 3PE hot winding belt on a diffusing pipe, manufacturing a three-way root anticorrosion 3PE heat shrinkage belt, and installing the three-way root anticorrosion 3PE heat shrinkage belt; the step of 'three-way root anticorrosion 3PE heat shrinkable tape' in the processes is particularly important, the general root anticorrosion is to use a repairing sheet to completely paste and wrap a special-shaped area, but the repairing sheet has no contractibility and is mainly used for repairing the pipeline after anticorrosion, and the repairing sheet is mainly used for repairing small-area damage, has many defects when being directly used for anticorrosion and has high requirement on the construction process of constructors; in addition, according to the chinese patent CN201320177749.4, a three-way insulation anticorrosion heat shrinkable sleeve for pipelines can not only seal, insulate and prevent corrosion of a main pipe and a connecting pipe of a three-way pipe, but also effectively wrap and seal a special-shaped area where the main pipe and the connecting pipe are connected, so as to completely reduce the construction difficulty and ensure the anticorrosion quality, but the types of the main pipes of PE pipes are varied, so that the three-way insulation anticorrosion heat shrinkable sleeve needs to be customized, the cost is high, the manufacturing process is complex, and the operability is not strong.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the anticorrosive device for the diffusing three-way pipe, which is convenient to process, low in cost, simple to operate and good in anticorrosive effect, and a processing and using method thereof.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a three-way pipe anti-corrosion device for diffusion mainly comprises a main pipeline, a diffusion pipe and a sealing heat-shrinkable belt, wherein the diffusion pipe is vertically welded on the main pipeline, a central hole is formed in the center of the sealing heat-shrinkable belt, the width of the sealing heat-shrinkable belt is 1/3 ~ 1/2 of the circumferential perimeter of the main pipeline, the length of the sealing heat-shrinkable belt is 20 ~ 30cm longer than the circumferential perimeter of the main pipeline, the diameter of the central hole is 3/4 ~ 4/5 of the diameter of the diffusion pipe, the central hole penetrates through the diffusion pipe and wraps the joint of the main pipeline and the diffusion pipe, and the height of the sealing heat-shrinkable belt at the wrapping position of the diffusion pipe is 3 ~ 4 cm.
Preferably, the outer layer of the sealing heat-shrinkable tape is also lap-wound with a 3PE heat-wound tape, and the 3PE heat-wound tape is wound from the root of the joint of the main pipe and the diffusing pipe.
Preferably, the thickness of the sealing heat shrinkable tape and the 3PE heat-wrap tape is 2.6 ~ 3 mm.
A processing and using method of a three-way pipe diffusing anticorrosion device mainly comprises the following steps:
(1) vertically welding the diffusing pipe on the main pipeline, and performing rust removal and priming paint brushing after the welding is finished;
(2) cutting a rectangular sealing heat-shrinkable belt according to the circumferential perimeter of the main pipeline, wherein the width of the sealing heat-shrinkable belt is 1/3 ~ 1/2 of the circumferential perimeter of the main pipeline, and the length of the sealing heat-shrinkable belt is 20 ~ 30cm longer than the circumferential perimeter of the main pipeline;
(3) determining the center of the sealing heat-shrinkable tape, punching a central hole at the center of the sealing heat-shrinkable tape according to the diameter of the diffusion pipe, wherein the diameter of the central hole is 3/4 ~ 4/5 of the diameter of the diffusion pipe;
(4) penetrating a central hole of the preheated sealing heat-shrinkable tape through the diffusing pipe, so that the sealing heat-shrinkable tape tightly wraps the joint of the main pipe and the diffusing pipe, and ensuring that the height of the sealing heat-shrinkable tape at the wrapping position of the diffusing pipe is 3 ~ 4 cm;
(5) heating the sealed heat-shrinkable tape to tightly wrap the main pipeline and the diffusing pipe;
(6) and 3PE hot winding tapes are wound on the outer layer of the sealing heat shrinkable tape, and the 3PE hot winding tapes are wound from the root of the joint of the main pipeline and the diffusing pipe.
The invention has the beneficial effects that:
the center of the sealing heat-shrinkable tape is punched with a center hole, the diameter of the center hole is 3/4 ~ 4/5 of the diameter of the diffusing pipe, the diameter of the center hole is smaller than that of the diffusing pipe, the sealing heat-shrinkable tape can be ensured to tightly wrap the joint of the main pipeline and the diffusing pipe, and after wrapping is completed, a 3PE heat-winding tape is wound to further prevent corrosion.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
FIG. 2 is a schematic view of a sealed heat shrinkable tape.
In the figure: 1 is a main pipeline, 2 is a diffusion pipe, 3 is a sealing heat shrinkage tape, 3.1 is a central hole, and 4 is a 3PE heat winding tape.
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.
A diffusing three-way pipe anticorrosion device mainly comprises a main pipe 1, a diffusing pipe 2 and a sealing heat-shrinkable tape 3, wherein the diffusing pipe 2 is vertically welded on the main pipe 1, the center of the sealing heat-shrinkable tape 3 is provided with a central hole 3.1, the width of the sealing heat-shrinkable tape 3 is 1/3 ~ 1/2 of the circumferential perimeter of the main pipe 1, the length of the sealing heat-shrinkable tape 3 is 20 ~ cm longer than the circumferential perimeter of the main pipe 1, the diameter of the central hole 3.1 is 3/4 ~ 4/5 of the diameter of the diffusing pipe 2, the central hole 3.1 penetrates through the diffusing pipe 2 and is wrapped at the joint of the main pipe 1 and the diffusing pipe 2, the height of the sealing heat-shrinkable tape 3 at the wrapping position of the diffusing pipe 2 is 3 ~ cm, the outer layer of the sealing heat-shrinkable tape 3 is lapped and wound with a 3PE heat-winding tape 4, the 3PE heat-winding tape 4 is wound from the root of the position of the main pipe 1 and the diffusing pipe 2, and the thickness of the sealing joint tape 3PE heat-winding tape 3 and.
A processing and using method of a three-way pipe diffusing anticorrosion device mainly comprises the following steps:
(1) vertically welding the diffusing pipe 2 on the main pipeline 1, and performing rust removal and priming paint brushing after the welding is finished;
(2) cutting a rectangular sealing heat-shrinkable belt 3 according to the circumferential perimeter of the main pipeline 1, wherein the width of the sealing heat-shrinkable belt 3 is 1/3 ~ 1/2 of the circumferential perimeter of the main pipeline 1, and the length of the sealing heat-shrinkable belt is 20 ~ 30cm longer than the circumferential perimeter of the main pipeline 1;
(3) determining the center of the sealing heat-shrinkable tape 3, punching a central hole 3.1 at the center of the sealing heat-shrinkable tape 3 according to the diameter of the diffusion pipe 2, wherein the diameter of the central hole 3.1 is 3/4 ~ 4/5 of the diameter of the diffusion pipe 2;
(4) the preheated central hole 3.1 of the sealing heat-shrinkable tape 3 penetrates through the diffusing pipe 2, so that the sealing heat-shrinkable tape 3 tightly wraps the joint of the main pipe 1 and the diffusing pipe 2, and the height of the sealing heat-shrinkable tape 3 at the wrapping position of the diffusing pipe 2 is ensured to be 3 ~ 4 cm;
(5) heating the sealing heat-shrinkable tape 3 to tightly wrap the main pipe 1 and the diffusing pipe 2;
(6) and 3PE heat-winding tapes 4 are wound on the outer layers of the sealing heat-shrinkable tapes 3, and the 3PE heat-winding tapes 4 are wound from the root parts of the joints of the main pipeline 1 and the diffusing pipes 2.
The three-way pipe at the diffusing part is obviously improved in anticorrosion attractiveness, the one-time anticorrosion qualified rate is increased from 89.22% to 98.21%, the thicknesses (about 3.0 mm) of the anticorrosion layers are all more than 2.0mm, the peel strengths (about 50N/cm) are all more than 25N/cm, and the electric spark detection qualified rate is 98.21%.
The embodiments described above are only a part of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (4)
1. A bleeding three-way pipe anticorrosion device is characterized by mainly comprising a main pipe, a bleeding pipe and a sealing heat-shrinkable belt, wherein the bleeding pipe is vertically welded on the main pipe, a central hole is formed in the center of the sealing heat-shrinkable belt, the width of the sealing heat-shrinkable belt is 1/3 ~ 1/2 of the circumferential perimeter of the main pipe, the length of the sealing heat-shrinkable belt is 20 ~ 30cm longer than the circumferential perimeter of the main pipe, the diameter of the central hole is 3/4 ~ 4/5 of the diameter of the bleeding pipe, the central hole penetrates through the bleeding pipe and wraps the junction of the main pipe and the bleeding pipe, and the height of the sealing heat-shrinkable belt at the wrapping position of the bleeding pipe is 3 ~ 4 cm.
2. The anti-corrosion device for the bleeding three-way pipe according to claim 1, characterized in that: the outer layer of the sealing heat-shrinkable tape is also lapped and wound with a 3PE heat-shrinkable tape, and the 3PE heat-shrinkable tape is wound from the root of the joint of the main pipeline and the diffusing pipe.
3. The anti-corrosion device for the diffuser tee pipe of claim 1, wherein the thickness of the sealing heat shrinkable tape and the 3PE heat winding tape is 2.6 ~ 3 mm.
4. A processing and using method of a tee anticorrosion device as claimed in any one of claims 1 ~ 3, wherein the method mainly comprises the following steps:
(1) vertically welding the diffusing pipe on the main pipeline, and performing rust removal and priming paint brushing after the welding is finished;
(2) cutting a rectangular sealing heat-shrinkable belt according to the circumferential perimeter of the main pipeline, wherein the width of the sealing heat-shrinkable belt is 1/3 ~ 1/2 of the circumferential perimeter of the main pipeline, and the length of the sealing heat-shrinkable belt is 20 ~ 30cm longer than the circumferential perimeter of the main pipeline;
(3) determining the center of the sealing heat-shrinkable tape, punching a central hole at the center of the sealing heat-shrinkable tape according to the diameter of the diffusion pipe, wherein the diameter of the central hole is 3/4 ~ 4/5 of the diameter of the diffusion pipe;
(4) penetrating a central hole of the preheated sealing heat-shrinkable tape through the diffusing pipe, so that the sealing heat-shrinkable tape tightly wraps the joint of the main pipe and the diffusing pipe, and ensuring that the height of the sealing heat-shrinkable tape at the wrapping position of the diffusing pipe is 3 ~ 4 cm;
(5) heating the sealed heat-shrinkable tape to tightly wrap the main pipeline and the diffusing pipe;
(6) and 3PE hot winding tapes are wound on the outer layer of the sealing heat shrinkable tape, and the 3PE hot winding tapes are wound from the root of the joint of the main pipeline and the diffusing pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910787545.4A CN110608348A (en) | 2019-08-26 | 2019-08-26 | Anti-corrosion device for diffusing three-way pipe and processing and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910787545.4A CN110608348A (en) | 2019-08-26 | 2019-08-26 | Anti-corrosion device for diffusing three-way pipe and processing and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110608348A true CN110608348A (en) | 2019-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910787545.4A Pending CN110608348A (en) | 2019-08-26 | 2019-08-26 | Anti-corrosion device for diffusing three-way pipe and processing and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110608348A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201318531Y (en) * | 2008-12-23 | 2009-09-30 | 深圳市长园长通热缩材料有限公司 | Conduit three-way antiseptic thermal shrinkage component |
| CN203147162U (en) * | 2013-04-10 | 2013-08-21 | 潍坊中石科技有限公司 | Insulation antiseptic heat shrinking sleeve of pipeline tee joint |
| CN204420422U (en) * | 2014-12-26 | 2015-06-24 | 昊天节能装备有限责任公司 | Prefabricated direct-buried insulation threeway |
| CN107795795A (en) * | 2017-10-20 | 2018-03-13 | 北京市热力集团有限责任公司 | A kind of live insulation construction and construction method of prefabricated thermal insulation straight tube and special piece |
| CN210462166U (en) * | 2019-08-26 | 2020-05-05 | 宜兴港华燃气有限公司 | Anti-corrosion device for diffusing three-way pipe |
-
2019
- 2019-08-26 CN CN201910787545.4A patent/CN110608348A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201318531Y (en) * | 2008-12-23 | 2009-09-30 | 深圳市长园长通热缩材料有限公司 | Conduit three-way antiseptic thermal shrinkage component |
| CN203147162U (en) * | 2013-04-10 | 2013-08-21 | 潍坊中石科技有限公司 | Insulation antiseptic heat shrinking sleeve of pipeline tee joint |
| CN204420422U (en) * | 2014-12-26 | 2015-06-24 | 昊天节能装备有限责任公司 | Prefabricated direct-buried insulation threeway |
| CN107795795A (en) * | 2017-10-20 | 2018-03-13 | 北京市热力集团有限责任公司 | A kind of live insulation construction and construction method of prefabricated thermal insulation straight tube and special piece |
| CN210462166U (en) * | 2019-08-26 | 2020-05-05 | 宜兴港华燃气有限公司 | Anti-corrosion device for diffusing three-way pipe |
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