CN115750971A - Seamless hot melt cover that leakproofness is high - Google Patents
Seamless hot melt cover that leakproofness is high Download PDFInfo
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- CN115750971A CN115750971A CN202211256428.3A CN202211256428A CN115750971A CN 115750971 A CN115750971 A CN 115750971A CN 202211256428 A CN202211256428 A CN 202211256428A CN 115750971 A CN115750971 A CN 115750971A
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Abstract
The invention discloses a seamless hot-melting sleeve with high sealing performance, which comprises a first cylinder body, wherein two ends of the first cylinder body are symmetrically provided with a second cylinder body, and the second cylinder body and the first cylinder body are coaxially arranged; an annular electric hot melting net is arranged on the inner side wall surface of the second cylinder; and a pre-fixing structure is arranged on the second cylinder. According to the seamless hot melting sleeve with high sealing performance, the first sleeve is an integral round pipe, no welding seam needing to be welded exists, the seamless hot melting sleeve is more corrosion-resistant, durable and durable, the seamless hot melting sleeve is matched with the electric hot melting nets at two ends, the seamless hot melting sleeve is more tightly connected with the repaired mouth of the heat preservation pipe, and the sealing strength is higher; in addition, the second sleeve is in a flaring form, so that the second sleeve is more convenient to assemble with the heat-insulating pipe, and is matched with a pre-fixing structure arranged on the second sleeve, so that the pre-fixing effect is achieved, the high-sealing seamless hot-melting sleeve is prevented from sliding before hot melting, and construction is facilitated.
Description
Technical Field
The invention relates to the technical field of pipelines, in particular to a seamless hot melting sleeve with high sealing performance.
Background
At present, as the protection, heat preservation and corrosion prevention layer of the main body of the directly buried heat preservation pipeline is prefabricated by special equipment in a factory, the quality of the protection layer and the heat preservation and corrosion prevention of the main body is reliable, the key for determining the final corrosion prevention and heat preservation performance of the pipeline lies in the quality of the joint of the protection layer (namely the joint between outer polyethylene plastic pipes), at present, the following 3 methods are adopted in the joint repairing method of the outer polyethylene protection layer of the directly buried pipeline: heat shrink sheet process, hot melt process and plastic welding process. The thermal shrinkage sheet method is to bake the thermal shrinkage sleeve or sheet by flame to shrink the sleeve or sheet by heating and to be banded and adhered with the outer polyethylene protective layer of the pipeline, and the method is adopted to ensure the field joint coating quality and has low joint coating strength. The hot melting method is to use a clamp to compress a patch (polyethylene sheet) with a polyethylene protective layer on the outer layer of the pipeline, then a heating wire heating mode is adopted to fuse the patch and the polyethylene protective layer together, and by adopting the method, because the patch surrounds the direct-buried insulating pipe for one circle, a longitudinal seam is formed at two ends of the patch at the patch position, and because the longitudinal seam needs to be hot-melted before foaming, no supporting annular space exists between the patch and the pipeline, although a tightening belt exists at the position during hot melting, no supporting exists in an inner cavity of the tightening belt, the longitudinal seam is not tight in hot melting, gaps are easy to appear at the lap joint, and after the tightening belt is tightened at the lap joint of the annular seam, the upper and lower electric heating melting nets are easy to bond and short circuit, and overburning occurs, so that the other parts are not welded sufficiently; meanwhile, the mouth repairing sheet has no contractibility, the port of the heat preservation pipeline is contracted, and the rigid clamp for compressing has poorer telescopic performance, so that the sealing performance of the interface is influenced. The plastic welding method is characterized in that the joint coating and the outer polyethylene protective layer of the pipeline are welded together by adopting a plastic welding rod, the method is greatly influenced by the weather during construction, the welding quality is not easy to guarantee, and meanwhile, the strength of a welding part is much lower than that of a hot melting method due to small fusion area.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it would be desirable to provide a seamless hot-melt sleeve with high sealing properties.
The seamless hot melting sleeve with high sealing performance comprises a first cylinder body, wherein two ends of the first cylinder body are symmetrically provided with a second cylinder body, and the second cylinder body and the first cylinder body are coaxially arranged; an annular electric hot melting net is arranged on the inner side wall surface of the second cylinder; and a pre-fixing structure is arranged on the second cylinder.
Preferably, the caliber of the second cylinder body from the end close to the first cylinder body to the end far away from the first cylinder body is gradually increased to form a flaring form.
Preferably, the pre-fixing structure comprises an annular channel arranged inside the second cylinder; the second cylinder is provided with an inlet and an outlet corresponding to the annular channel, and the inlet and the outlet are communicated with the annular channel; and the locking ropes penetrate through the inlets into the corresponding annular channels and penetrate out of the corresponding outlets.
Preferably, the first sleeve is a section of integral circular pipe, and the first sleeve is a PE pipe.
Preferably, the second cylinder is made of PE materials.
Preferably, the electric hot melting net is embedded on the inner side wall surface of the second sleeve in a hot-pressing mode.
Compared with the prior art, the invention has the beneficial effects that:
according to the seamless hot melting sleeve with high sealing performance, the first sleeve is an integral circular tube, no welding seam needing to be welded exists, the seamless hot melting sleeve is more corrosion-resistant, durable and durable, the seamless hot melting sleeve is more tightly connected with the repaired mouth of the directly-buried heat-insulating tube by matching with the electric hot melting nets at two ends, and the sealing strength is higher; the process of high-sealing seamless hot-melting sleeve joint coating is adopted, so that the service life of the directly-buried heat-insulating pipeline is prolonged, the accident rate of the pipeline is reduced, and the safety of the directly-buried heat-insulating pipeline is improved; in addition, the second sleeve is in a flaring form, so that the second sleeve can be more conveniently assembled with the heat preservation pipe, and is matched with a pre-fixing structure arranged on the second sleeve, so that the pre-fixing effect is achieved, the high-sealing seamless hot melting sleeve is prevented from sliding before hot melting, and construction is facilitated.
It should be understood that the statements made in this summary are not intended to limit the key or critical features of the embodiments of the present invention, or to limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1 is a schematic structural diagram of a seamless hot-melt sleeve with high sealing performance according to an embodiment of the present invention;
reference numbers in the figures: 1. a first sleeve; 2. a second sleeve; 3. electric hot melting net; 4. an annular channel; 5. an inlet; 6. an outlet; 7. and (4) a locking rope.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, an embodiment of the present invention provides a seamless hot-melt sleeve with high sealing performance, including a first cylinder 1, wherein two ends of the first cylinder 1 are symmetrically provided with a second cylinder 2, and the second cylinder 2 is coaxially disposed with the first cylinder 1; an annular electric hot melting net 3 is arranged on the inner side wall surface of the second cylinder 2; the second cylinder 2 is provided with a pre-fixing structure.
In a preferred embodiment, the caliber of the second cylinder 2 increases gradually from the end close to the first cylinder 1 to the end far from the first cylinder 1, forming a flaring form.
The second cylinder 2 is arranged in a flaring mode, so that when the seamless hot-melting sleeve is installed at the interface of the heat-insulating pipe, the installation is more convenient, the time is saved, and the installation efficiency is improved;
in a preferred embodiment, the prefixing structure comprises an annular channel 4 arranged inside the second cylinder 2; the second cylinder 2 is provided with an inlet 5 and an outlet 6 corresponding to the annular channel 4, and the inlet 5 and the outlet 6 are communicated with the annular channel 4; through the inlet 5 into the interior of the respective annular channel 4 and out of the respective outlet 6 a locking cord 7 is provided.
Because the second barrel 2 sets up to the flaring form, then be provided with the structure of fixing in advance on second barrel 2, install seamless hot melt cover on the insulating tube of arbitrary one end before the welding insulating tube, then weld, after the weldment work is accomplished, remove seamless hot melt cover to the welding seam department of insulating tube, it is fixed to lock both ends respectively through locking rope 7 with both ends, with the steady 2 solid fixes on the insulating tube way of second sleeve, reach the purpose of fixing in advance, when avoiding the electric heat melting net heat 3 at both ends to melt, whole seamless hot melt cover takes place the skew in position.
In a preferred embodiment, the first sleeve is a section of integral circular tube, and the first sleeve is made of PE tube.
In a preferred embodiment, the second cylinder is made of PE material.
In a preferred embodiment, the electric hot-pressing net is embedded on the inner side wall surface of the second sleeve in a hot-pressing mode.
In the description of the present specification, the terms "connect", "mount", "fix", and the like are to be understood broadly, for example, "connect" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the present application, the description of the terms "one embodiment," "some embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (6)
1. A seamless hot melting sleeve with high sealing performance is characterized by comprising a first cylinder body, wherein two ends of the first cylinder body are symmetrically provided with a second cylinder body, and the second cylinder body and the first cylinder body are coaxially arranged; an annular electric hot melting net is arranged on the inner side wall surface of the second cylinder; and a pre-fixing structure is arranged on the second cylinder.
2. The seamless hot melt sleeve with high sealing performance according to claim 1, wherein the caliber of the end, close to the first cylinder, of the second cylinder to the end far away from the first cylinder is gradually increased to form a flaring form.
3. The seamless hot melt sleeve with high sealing performance according to claim 2, wherein the pre-fixing structure comprises an annular channel arranged inside the second cylinder body; the second cylinder is provided with an inlet and an outlet corresponding to the annular channel, and the inlet and the outlet are communicated with the annular channel; and the locking ropes penetrate through the inlets into the corresponding annular channels and penetrate out of the corresponding outlets.
4. The seamless hot melt sleeve with high sealing performance as claimed in claim 3, wherein the first sleeve is a section of an integral circular tube, and the first sleeve is a PE tube.
5. The seamless hot melt sleeve with high sealing performance as claimed in claim 4, wherein the second cylinder is made of PE.
6. The seamless hot-melt sleeve with high sealing performance according to claim 5, wherein the electric hot-melt net is hot-pressed and embedded on the inner side wall surface of the second sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211256428.3A CN115750971A (en) | 2022-10-14 | 2022-10-14 | Seamless hot melt cover that leakproofness is high |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211256428.3A CN115750971A (en) | 2022-10-14 | 2022-10-14 | Seamless hot melt cover that leakproofness is high |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115750971A true CN115750971A (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211256428.3A Pending CN115750971A (en) | 2022-10-14 | 2022-10-14 | Seamless hot melt cover that leakproofness is high |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115750971A (en) |
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2022
- 2022-10-14 CN CN202211256428.3A patent/CN115750971A/en active Pending
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