CN210462166U - Anti-corrosion device for diffusing three-way pipe - Google Patents
Anti-corrosion device for diffusing three-way pipe Download PDFInfo
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- CN210462166U CN210462166U CN201921385678.0U CN201921385678U CN210462166U CN 210462166 U CN210462166 U CN 210462166U CN 201921385678 U CN201921385678 U CN 201921385678U CN 210462166 U CN210462166 U CN 210462166U
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Abstract
The utility model discloses a diffuse three-way pipe corrosion prevention device, its characterized in that: the device mainly comprises a main pipeline, a diffusing pipe and a sealing heat-shrinkable belt, wherein the diffusing pipe is vertically welded on the main pipeline, a central hole is formed in the center of the sealing heat-shrinkable belt, the central hole penetrates through the diffusing pipe to wrap the junction of the main pipeline and the diffusing pipe, and the height of the sealing heat-shrinkable belt at the wrapping position of the diffusing pipe is 3-4 cm.
Description
Technical Field
The utility model relates to a gas pipeline annex field especially relates to a diffuse three-way pipe corrosion prevention device and processing application 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.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome the not enough of prior art, provide a processing is convenient, and the cost is lower, easy operation, anticorrosive effectual a diffuse three-way pipe corrosion prevention device and processing application method thereof.
In order to realize the purpose of the utility model, the technical proposal of the utility model is that:
a three-way pipe diffusing anti-corrosion device mainly comprises a main pipeline, a diffusing pipe and a sealing heat-shrinkable belt, wherein the diffusing 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, and the length of the sealing heat-shrinkable belt is 20-30 cm 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 diffusing pipe, 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 shrinkage band at the wrapping position of the diffusing 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 shrinkage tape and the 3PE heat winding 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 20-30 cm longer than the circumferential perimeter of the main pipeline;
(3) determining the center of the sealing heat-shrinkable belt, punching a center hole at the center of the sealing heat-shrinkable belt according to the diameter of a diffusion pipe, wherein the diameter of the center 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 a diffusing pipe, so that the sealing heat-shrinkable tape tightly wraps the joint of the main pipeline 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 utility model has the advantages that:
the center of the sealing heat-shrinkable belt 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 belt can be guaranteed to tightly wrap the joint of the main pipe and the diffusing pipe, and after wrapping is completed, a 3PE heat-winding belt is wound to further prevent corrosion.
Drawings
Fig. 1 is a schematic structural diagram 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 three-way pipe anti-corrosion device for diffusion mainly comprises a main pipeline 1, a diffusion pipe 2 and a sealing heat-shrinkable belt 3, wherein the diffusion pipe 2 is vertically welded on the main pipeline 1, the center of the sealing heat-shrinkable belt 3 is provided with a central hole 3.1, 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 3 is 20-30 cm longer than the circumferential perimeter of the main pipeline 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 wraps the junction 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 3-4 cm, the outer layer of the sealing heat-shrinkable tape 3 is also lapped and wound with a 3PE heat-shrinkable tape 4, the 3PE heat-shrinkable tape 4 is wound from the root of the junction of the main pipe 1 and the diffusing pipe 2, and the thickness of the sealing heat-shrinkable tape 3 and the thickness of the 3PE heat-shrinkable tape 4 are 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 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 20-30 cm longer than the circumferential perimeter of the main pipeline 1;
(3) determining the center of a sealing heat-shrinkable belt 3, punching a central hole 3.1 at the center of the sealing heat-shrinkable belt 3 according to the diameter of a 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) penetrating a central hole 3.1 of the preheated sealing heat-shrinkable tape 3 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 ensuring that the height of the sealing heat-shrinkable tape 3 at the wrapping position of the diffusing pipe 2 is 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. 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.
Claims (3)
1. The utility model provides a diffuse three-way pipe anticorrosive device which characterized in that: the heat-shrinkable sealing tape mainly comprises a main pipeline, a diffusing pipe and a sealing heat-shrinkable tape, wherein the diffusing pipe is vertically welded on the main pipeline, a central hole is formed in the center of the sealing heat-shrinkable tape, the width of the sealing heat-shrinkable tape is 1/3-1/2 of the circumferential perimeter of the main pipeline, and the length of the sealing heat-shrinkable tape is 20-30 cm 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 diffusing pipe, 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 shrinkage band at the wrapping position of the diffusing 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 bleeding three-way pipe according to claim 1, characterized in that: the thickness of the sealing heat shrinkage tape and the 3PE heat winding tape is 2.6-3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921385678.0U CN210462166U (en) | 2019-08-26 | 2019-08-26 | Anti-corrosion device for diffusing three-way pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921385678.0U CN210462166U (en) | 2019-08-26 | 2019-08-26 | Anti-corrosion device for diffusing three-way pipe |
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| CN210462166U true CN210462166U (en) | 2020-05-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608348A (en) * | 2019-08-26 | 2019-12-24 | 宜兴港华燃气有限公司 | Anti-corrosion device for diffusing three-way pipe and processing and using method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608348A (en) * | 2019-08-26 | 2019-12-24 | 宜兴港华燃气有限公司 | Anti-corrosion device for diffusing three-way pipe and processing and using method thereof |
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