CN216867769U - A strengthen seal structure for gas pipeline - Google Patents
A strengthen seal structure for gas pipeline Download PDFInfo
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- CN216867769U CN216867769U CN202123277514.6U CN202123277514U CN216867769U CN 216867769 U CN216867769 U CN 216867769U CN 202123277514 U CN202123277514 U CN 202123277514U CN 216867769 U CN216867769 U CN 216867769U
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Abstract
The utility model belongs to the technical field of buried gas pipeline construction, and particularly discloses a reinforced sealing structure for a gas pipeline, which comprises a gas pipe and a sleeve, wherein the sleeve is sleeved on the periphery of the gas pipe, a gap is reserved between the sleeve and the gas pipe, and a sealing material is filled in the gap at the pipe orifice of the sleeve. The utility model has the advantages of simple structure, good sealing effect and prolonged service life of the sleeve.
Description
Technical Field
The utility model belongs to the technical field of buried gas pipeline construction, and particularly relates to a reinforced sealing structure for a gas pipeline.
Background
In the construction of buried gas pipelines, a steel sleeve 2 can be arranged outside a gas pipe 1 under certain conditions to protect the gas pipelines. According to the standard requirements, the clearance between the steel sleeve 2 and the gas pipe 1 is sealed by adopting a flexible anticorrosive waterproof material 3, as shown in figure 1. However, in actual field construction, the sealing construction at the position is prone to cause management leaks and other factors due to the fact that the construction field environment is severe, the material performance requirement is high, and the concealed process supervision is prone to generating management leaks, and the sealing performance after construction is difficult to detect, so that sealing at the position is difficult to guarantee sealing quality only by sealing with a flexible anti-corrosion waterproof material. If the sealing performance is poor, the air and water are easy to enter the steel sleeve, so that the inner wall of the steel sleeve is corroded, the steel sleeve is damaged, and the function of the steel sleeve is lost. Particularly, the PE gas pipeline widely used at present has the design service life of 50 years, and if a steel sleeve is corroded, the service life is only a few years, and the PE gas pipeline cannot play a role in protecting the PE pipe within the whole operation life. Therefore, how to enhance the sealing performance of the two ends of the sleeve and delay the service life of the sleeve is a subject to be researched.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a reinforced sealing structure for a gas pipeline, which has a simple structure and a good sealing effect and can prolong the service life of a sleeve.
In order to solve the technical problem, the utility model provides a reinforced sealing structure for a gas pipeline, which comprises a gas pipe and a sleeve, wherein the sleeve is sleeved on the periphery of the gas pipe, a gap is reserved between the sleeve and the gas pipe, a sealing material is filled in the gap at the pipe orifice of the sleeve, a heat shrinkage sleeve is arranged on the sealing material, the heat shrinkage sleeve is a step-shaped sleeve and is provided with a large-diameter section and a small-diameter section, the large-diameter section is sleeved on the periphery of the sleeve, and the small-diameter section is sleeved on the periphery of the gas pipe.
As a preferable aspect of the present invention, the sleeve and the gas pipe are both made of steel.
Further, the large-diameter section is in sealing fit with the sleeve by heating.
Further, the small-diameter section is in sealing fit with the gas pipe through heating.
As a preferable scheme of the utility model, the sleeve is a steel pipe, and the gas pipe is a PE pipe.
Further, the large-diameter section is in sealing fit with the sleeve by heating.
Further, a steel-plastic conversion sleeve is arranged between the small-caliber section and the gas pipe, the steel-plastic conversion sleeve comprises a PE pipe body and a steel outer layer embedded on the periphery of the PE pipe body, the PE pipe body is connected with the gas pipe in an electric melting mode, and the small-caliber section is in sealing fit with the steel outer layer through heating.
Furthermore, a heating wire is arranged in the PE pipe body, and electric melting electric connection holes for the heating wire to be externally connected with a power supply are formed in the periphery of the PE pipe body.
Compared with the prior art, the reinforced sealing structure for the gas pipeline has the beneficial effects that:
the heat-shrinkable sleeve is additionally arranged on the basis of sealing by the sealing material, so that a sealing protective layer is formed on the outer side of the sealing material, the sealing performance of a gap between the sleeve and the gas pipe is enhanced, and the heat-shrinkable sleeve has the advantages of simple structure, good sealing effect and prolonged service life of the sleeve.
Drawings
To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
FIG. 1 is a schematic structural view of a sealing structure of a conventional gas pipeline;
fig. 2 is a schematic structural diagram of a sealing structure of a gas pipeline according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a sealing structure of a gas pipeline according to a second embodiment of the present invention;
fig. 4 is a schematic view of the structure of the steel-plastic transition bushing in the structure shown in fig. 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Example one
As shown in fig. 2, a reinforced sealing structure for a gas pipeline according to an embodiment of the present invention includes a gas pipe 1 and a sleeve 2, the sleeve 2 is sleeved on an outer periphery of the gas pipe 1, a gap is left between the sleeve 2 and the gas pipe 1, the gap is filled with a sealing material 3 at a pipe orifice of the sleeve 2, a heat-shrinkable sleeve 4 is disposed at the sealing material 3, the heat-shrinkable sleeve 4 is a stepped sleeve and is provided with a large-diameter section 41 and a small-diameter section 42, the large-diameter section 41 is sleeved on an outer periphery of the sleeve 2, and the small-diameter section 42 is sleeved on an outer periphery of the gas pipe 1. In this embodiment, the sealing material 3 is a flexible anticorrosive waterproof material; the sleeve 2 and the gas pipe 1 are both made of steel; the large-diameter section 41 is in sealing fit with the sleeve 2 through heating; the small-diameter section 42 is in sealing contact with the gas pipe 1 by heating.
According to the reinforced sealing structure of the gas pipe 1, the heat shrinkage sleeve 4 is added on the basis of the sealing material 3, so that a sealing protective layer is formed on the outer side of the sealing material 3, the sealing performance of a gap between the sleeve 2 and the gas pipe 1 is enhanced, and the reinforced sealing structure has the advantages of being simple in structure, good in sealing effect and capable of prolonging the service life of the sleeve 2.
Example two
As shown in fig. 3 and 4, a reinforced sealing structure of a gas pipe 1 according to a second embodiment of the present invention includes a gas pipe 1 and a sleeve 2, the sleeve 2 is sleeved on an outer periphery of the gas pipe 1, a gap is left between the sleeve 2 and the gas pipe 1, a sealing material 3 is filled in the gap at a pipe orifice of the sleeve 2, a heat-shrinkable sleeve 4 is disposed at the sealing material 3, the heat-shrinkable sleeve 4 is a stepped sleeve and is provided with a large-diameter section 41 and a small-diameter section 42, the large-diameter section 41 is sleeved on an outer periphery of the sleeve 2, and the small-diameter section 42 is sleeved on an outer periphery of the gas pipe 1. In this embodiment, the sealing material 3 is a flexible anticorrosive waterproof material; the sleeve 2 is a steel pipe, and the gas pipe 1 is a PE pipe; the large-diameter section 41 is in sealing fit with the sleeve 2 by heating; a steel-plastic conversion sleeve 5 is arranged between the small-diameter section 42 and the gas pipe 1, the steel-plastic conversion sleeve 5 comprises a PE pipe body 51 and a steel outer layer 52 embedded on the periphery of the PE pipe body 51, the PE pipe body 51 is connected with the gas pipe 1 in an electric melting mode, and the small-diameter section 42 is in sealing fit with the steel outer layer 52 through heating.
It can be seen that, in the second embodiment, the steel-plastic conversion sleeve 5 is added on the basis of the first embodiment, which is because: when the gas pipe 1 is a PE pipe, the PE pipe is heated and can be melted and damaged, so that the heat shrinkable sleeve 4 cannot be directly heated on the surface of the PE pipe. Therefore, while the second embodiment has all the advantages of the first embodiment, the steel-plastic conversion sleeve 5 protects the gas pipe 1 made of PE, and the heat-shrinkable sleeve 4 is convenient to implement.
Further, in order to better realize the connection between the PE pipe body 51 and the gas pipe 1, a heating wire 53 is arranged in the PE pipe body 51, and an electric fusing hole 54 for the heating wire 53 to be externally connected with a power supply is arranged on the periphery of the PE pipe body 51. When the heating wire 53 is electrified, the PE pipe body 51 is heated and melted, and is in sealing adhesion with the surface of the gas pipe 1 (i.e. the PE pipe).
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the utility model is not limited by the scope of the appended claims.
Claims (8)
1. A reinforced sealing structure for a gas pipeline comprises a gas pipe and a sleeve, wherein the sleeve is sleeved on the periphery of the gas pipe, a gap is reserved between the sleeve and the gas pipe, and the gap is filled with a sealing material at a pipe opening of the sleeve.
2. A reinforced sealing structure for a gas pipe according to claim 1, wherein the sleeve and the gas pipe are both steel pipes.
3. A reinforced seal configuration for a gas fired conduit according to claim 2 wherein the large diameter section is sealingly engaged with the sleeve by heat.
4. A reinforced seal for a gas conduit according to claim 2, wherein the small diameter section is sealingly engaged with the gas conduit by heat.
5. A reinforced sealing structure for a gas pipe according to claim 1, wherein the sleeve is a steel pipe and the gas pipe is a PE pipe.
6. A reinforced seal construction for a gas fired conduit according to claim 5 wherein the large diameter section is sealingly engaged with the sleeve by heat.
7. A reinforced seal structure for a gas pipe according to claim 5, wherein a steel-plastic transition sleeve is provided between the small-diameter section and the gas pipe, the steel-plastic transition sleeve includes a PE pipe body and a steel outer layer embedded on an outer periphery of the PE pipe body, the PE pipe body is electrofused with the gas pipe, and the small-diameter section is sealingly bonded to the steel outer layer by heating.
8. A reinforced sealing structure for a gas pipeline according to claim 7, wherein a heating wire is arranged in the PE pipe body, and an electric melting electric connection hole for an external power supply of the heating wire is arranged on the periphery of the PE pipe body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123277514.6U CN216867769U (en) | 2021-12-23 | 2021-12-23 | A strengthen seal structure for gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123277514.6U CN216867769U (en) | 2021-12-23 | 2021-12-23 | A strengthen seal structure for gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216867769U true CN216867769U (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123277514.6U Active CN216867769U (en) | 2021-12-23 | 2021-12-23 | A strengthen seal structure for gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216867769U (en) |
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2021
- 2021-12-23 CN CN202123277514.6U patent/CN216867769U/en active Active
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