CN115596918A - Pipeline joint coating device, method and pipeline system - Google Patents
Pipeline joint coating device, method and pipeline system Download PDFInfo
- Publication number
- CN115596918A CN115596918A CN202211221081.9A CN202211221081A CN115596918A CN 115596918 A CN115596918 A CN 115596918A CN 202211221081 A CN202211221081 A CN 202211221081A CN 115596918 A CN115596918 A CN 115596918A
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- Prior art keywords
- pipe
- hard outer
- electric melting
- melting
- hot
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Classifications
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- 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
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/02—Welded joints; Adhesive joints
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- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention provides a pipeline joint coating device, a coating method and a pipeline system. The method is characterized in that the electric melting pipe fitting, the hard outer protecting pipe and the two pipelines to be repaired are assembled in advance, then the pipelines are connected in a hot melting mode through hot electric melting, and then the hard outer protecting pipe on the outermost portion is connected, so that the hard outer protecting pipe cannot be adopted due to welding.
Description
Technical Field
The invention relates to the technical field of heat supply pipelines, in particular to a joint repairing device of a pipeline joint, a method for performing joint repairing operation by using the joint repairing device and a pipeline system using the joint repairing device.
Background
Polyurethane foam plastic prefabricated PE-RT heat preservation pipes are commonly used for buried pipes, joint heat preservation treatment of two PE-RT heat preservation pipes is an important construction control node, if leakage occurs at joints, underground water can permeate, the whole heat preservation structure can be damaged, heat dissipation loss is large, and the service life of a pipeline is influenced.
The existing joint heat preservation technology of the ground buried pipe of the PE-RT prefabricated heat preservation pipe comprises the steps of firstly welding two PE-RT pipes together by using a hot melting welding machine, rolling and connecting the two PE-RT pipes at an interface by using PE rubber, and then bonding by using a heat shrinkable tape or welding by using a PE pipe welding rod. The defects of the prior art are as follows:
in order to facilitate construction, the prior art adopts PE rubber for rolling connection, the rubber is soft and is easy to deform in the rolling connection, welding and foaming processes, and the quality of a connector is influenced. The outer sheath near the interface is not made of high-density materials and is firm in the using process, and deformation is easy to generate and damage in the thermal expansion process during operation.
Disclosure of Invention
In order to solve the technical problems, the invention adopts the following technical scheme:
a pipe joint coating device, comprising:
electrically melting the pipe fittings; and
the hard outer protective pipe is sleeved outside the electric melting pipe fitting, a wiring hole is formed in the hard outer protective pipe, and an electric melting welding connecting line for connecting the electric melting pipe fitting penetrates through the wiring hole;
a gap for filling foaming materials is formed between the hard outer protective pipe and the electric melting pipe fitting.
The invention also provides a pipeline joint coating method, which comprises the following steps:
providing a hard outer protective pipe;
inserting an electric melting pipe fitting into an inner cavity of the hard outer protection pipe, and then inserting two pipelines to be repaired into the electric melting pipe fitting;
hot melting and connecting the joints of the two pipelines by hot electric melting;
connecting the hard outer protective pipes with the outer protective pipe ports of the two pipelines; and
and foaming the gap between the hard outer protective pipe and the electric melting pipe fitting.
Further, the interface of two pipelines is connected by hot melting through hot electric melting, which specifically comprises:
forming a wiring hole in the hard outer protective pipe, and penetrating an electric fusion welding connecting wire into the wiring hole;
and connecting the joints of the two pipelines in a hot melting mode through hot electric melting, and then taking out the electric melting welding connecting line.
Further, before the foaming treatment, the airtightness detection is carried out on the gap between the hard outer protective pipe and the electric melting pipe fitting through the wiring hole.
Preferably, the hard outer protective pipe is made of high-density polyethylene, and the high-density polyethylene outer protective pipe consistent with the PE-RT prefabricated heat-insulation pipe is durable compared with the PE rubber.
The invention also provides a pipeline system which comprises a plurality of pipeline elements, and adjacent pipeline elements are connected through the pipeline joint repaired mouth device.
According to the technical scheme, the electric melting pipe fitting, the hard outer protection pipe and the two pipelines to be repaired are assembled in advance, then the pipelines are connected in a hot melting mode through hot electric melting, and then the outermost hard outer protection pipe is connected, so that the situation that the hard outer protection pipe cannot be adopted due to welding is avoided; in addition, only two welding openings and two wiring holes butted with the pipeline need to be welded, the number of the welding openings is small, the construction is convenient, the welding position is consistent with the size of the pipeline, concentrated stress cannot be generated during thermal expansion, and the stability of the pipeline in the operation process is improved; the complex large welding machine is not needed, the construction organization is convenient, and the cost is low.
Drawings
FIG. 1 is an isometric view of a pipe joint patching device of the present invention;
FIG. 2 is a radial cross-sectional view of the pipe joint coating apparatus of the present invention;
fig. 3 is an assembly view illustrating a method for repairing a pipe joint according to the present invention.
Detailed Description
A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
The invention relates to a pipeline joint coating device which is used for carrying out hot melting connection on two sections of pipeline joints and realizing heat preservation treatment, and the device is used for joint treatment of a PE-RT heat preservation pipe prefabricated by polyurethane foam in the embodiment.
As shown in fig. 1 and 2, the pipe joint coating device includes an electric melting pipe fitting 1 and a hard outer protection pipe 2 sleeved outside the electric melting pipe fitting, wherein the electric melting pipe fitting 2 can be externally connected with a hot melting device to perform hot melting connection on a joint of a PE-RT thermal insulation pipe 3 inserted into the electric melting pipe fitting 1.
In this embodiment, the hard outer protective tube 2 is made of a high-density polyethylene material consistent with the outer protective tube 31 of the PE-RT heat-insulating tube 3, so as to prevent deformation caused by subsequent hot melting, welding and foaming processes, ensure the quality of the interface, and facilitate welding with the outer protective tube of the PE-RT heat-insulating tube. In order to cooperate the hot melt of electric smelting pipe fitting 1 to handle, seted up two wiring holes 21 on the outer pillar 2 of stereoplasm, wear to be equipped with the electric fusion welding connecting wire 11 of connecting electric smelting pipe fitting 1 in this wiring hole 21, this electric fusion welding connecting wire 11 just directly extracts after the hot melt is handled, and two wiring holes 21 also can be repaired.
Because the outer pillar 2 of stereoplasm is established on electric smelting pipe fitting 1, can have clearance 4 with electric smelting pipe fitting 1 between, need fill foaming material through foaming equipment to clearance 4, avoid the infiltration to take place.
By adopting the pipeline joint coating device, the three structures of the hard outer protective pipe 2, the electric melting pipe fitting 1 and the PE-RT heat preservation pipe 3 are assembled in advance, so that the situation that the hard outer protective pipe cannot be assembled after the PE-RT heat preservation pipes at two ends are welded in a butt joint mode in the following process can be avoided, and the joint connection effect is improved.
The invention also provides a pipeline system which comprises a plurality of pipeline elements, wherein adjacent pipeline elements are connected through the pipeline joint repaired mouth device, so that the welding quality is ensured.
Referring to fig. 3, the present invention further provides a method for repairing a pipe joint, comprising the steps of:
firstly, a hard outer protection pipe 2 needs to be provided, and in the embodiment, a high-density polyethylene material which is the same as the outer protection pipe 31 of the PE-RT heat preservation pipe 3 is adopted;
then inserting the electric melting pipe fitting 1 into the inner cavity of the hard outer protecting pipe 2, and then inserting the two PE-RT heat preservation pipes 3 to be repaired into the electric melting pipe fitting 1;
two wiring holes 21 are formed in the hard outer protective pipe 2, and the electric-fusion welding connecting wire 11 penetrates into the wiring holes;
connecting the interfaces of the two PE-RT heat preservation pipes 3 in a hot melting way through hot electric melting, and then taking out the electric melting welding connecting line 11;
welding the hard outer protective pipe 2 with the outer protective pipe 31 ports of the two PE-RT heat preservation pipes 3;
and finally, carrying out air tightness detection on the gap 4 between the hard outer protective pipe 2 and the electric melting pipe fitting 1 through the wiring hole 21, foaming the gap 4 after the air tightness detection is qualified, and repairing the wiring hole 21 after foaming is finished.
The above embodiments are merely illustrative of the preferred embodiments of the present invention, and not restrictive, and various changes and modifications to the technical solutions of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are intended to fall within the scope of the present invention defined by the appended claims.
Claims (10)
1. A pipe joint repaired mouth device characterized by comprising:
electrically melting the pipe fittings; and
the hard outer protection pipe is sleeved outside the electric melting pipe fitting, a wiring hole is formed in the hard outer protection pipe, and an electric melting welding connecting line for connecting the electric melting pipe fitting penetrates through the wiring hole;
and a gap for filling foaming materials is formed between the hard outer protective pipe and the electric melting pipe fitting.
2. The pipe joint opening repairing device of claim 1, wherein the hard outer protecting pipe is made of high-density polyethylene.
3. The pipe joint coating device according to claim 1 or 2, wherein the pipe is a PE-RT pipe.
4. A pipeline joint patching method is characterized by comprising the following steps:
providing a hard outer protective pipe;
inserting an electric melting pipe fitting into an inner cavity of the hard outer protecting pipe, and then inserting two pipelines to be repaired into the electric melting pipe fitting;
hot melting and connecting the joints of the two pipelines by hot electric melting;
connecting the hard outer protective pipes with the outer protective pipe ports of the two pipelines; and
and foaming the gap between the hard outer protective pipe and the electric melting pipe fitting.
5. The method according to claim 4, wherein the interface of the two pipes is hot-melted by hot-melting, specifically:
forming a wiring hole in the hard outer protective pipe, and penetrating an electric fusion welding connecting wire into the wiring hole;
and connecting the joints of the two pipelines in a hot melting mode through hot electric melting, and then taking out the electric melting welding connecting line.
6. The pipe joint patching method of claim 5, wherein the number of the wiring holes is two.
7. The method for repairing a pipe joint according to claim 4, further comprising performing airtightness detection on a gap between the hard outer sheath and the electrofused pipe fitting through the wiring hole before the foaming process.
8. The method for repairing a pipe joint according to claim 4, wherein the hard outer sheath is made of a high density polyethylene material.
9. The method of claim 4, wherein the pipe is a PE-RT pipe.
10. A pipe system comprising a plurality of pipe elements, wherein adjacent ones of said pipe elements are connected by a pipe joint patch device as claimed in any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211221081.9A CN115596918A (en) | 2022-10-08 | 2022-10-08 | Pipeline joint coating device, method and pipeline system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211221081.9A CN115596918A (en) | 2022-10-08 | 2022-10-08 | Pipeline joint coating device, method and pipeline system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115596918A true CN115596918A (en) | 2023-01-13 |
Family
ID=84845105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211221081.9A Pending CN115596918A (en) | 2022-10-08 | 2022-10-08 | Pipeline joint coating device, method and pipeline system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115596918A (en) |
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2022
- 2022-10-08 CN CN202211221081.9A patent/CN115596918A/en active Pending
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| CB02 | Change of applicant information |
Address after: 230001 Building D6, Hefei Financial Plaza, No. 666, Linhu Road, Luyang District, Hefei City, Anhui Province Applicant after: Hefei Ruina Intelligent Energy Management Co.,Ltd. Address before: Room 2604, Tower C, Jinzuo, Tuoji City Plaza, Changjiang West Road, High tech Zone, Hefei, Anhui Province, 230088 Applicant before: Hefei Ruina Intelligent Energy Management Co.,Ltd. |
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