CN215488304U - 3PE steel-plastic adapter with filling gasket - Google Patents

Abstract

The application discloses crossover sub is moulded to 3PE from area packing ring relates to and buries ground plastic conduit field. The heat-shrinkable sleeve comprises a steel pipe fitting, a PE (polyethylene) fitting, a clamping ring and a 3PE heat-shrinkable sleeve. The PE piece has first end and second end, and first end is used for being connected with the plastic conduit, and the second end is used for the suit in steel end connecting portion department, the oral area of second end forms the oblique angle, and the end at oblique angle forms the boss. The PE part is formed with a structure of a bevel and a boss at the mouth of the second end of the PE part, namely the PE part is formed with a filling gasket. The baked 3PE heat shrinkable sleeve can be well bonded with the oblique angle in the PE part, the problem that the position is the weak point of peeling strength in the past is solved, the corrosion resistance is enhanced, the potential safety hazard is reduced for the operation of a gas pipe network, and meanwhile, the labor cost is saved. Furthermore, the lug boss of the PE piece can simultaneously play a role of a stop ring, so that the clamping ring is easier to position in the assembling process.

Description

3PE steel-plastic adapter with filling gasket

Technical Field

The application relates to the field of buried plastic pipelines, in particular to a 3PE steel-plastic adapter with a filling gasket.

Background

At present, in the field of fluid conveying pipelines such as gas pipelines, common pipelines are steel metal pipelines and plastic pipelines made of Polyethylene (PE). Among them, metal pipes are generally used for medium and high pressure fluid transportation systems, and plastic pipes are generally used for low pressure fluid transportation. The state-related engineering code states that plastic pipes are not allowed to enter directly into the user's room. Therefore, when a high-pressure pipeline is transited to a low-pressure pipeline, and when a plastic pipeline enters a house from a garden pipe, a steel-plastic conversion joint is generally required.

In recent years, 3PE steel-plastic crossover joints have been used in large quantities in the fields of gas transportation and thermal power supply water pipelines. The 3PE steel-plastic conversion structure is formed by adding a PEX heat-shrinkable sleeve on the outer surface of a steel pipe section of a common steel-plastic conversion joint. The ordinary steel-plastic adapter comprises: the steel end, the PE plastic end and the metal clamping ring are connected together. Filling materials such as viscoelastic bodies, putty, PE rings and the like need to be filled in gaps at the joint of the steel pipe fitting and the PE fitting in the baking process of the heat shrinkable sleeve, so that more labor cost is wasted, and the 3PE heat shrinkable sleeve has poor stripping effect at the position due to the fact that the filling materials cannot be fixed, so that certain influence is caused on the corrosion prevention effect.

SUMMERY OF THE UTILITY MODEL

It is an object of the present application to overcome the above problems or to at least partially solve or mitigate the above problems.

The application provides a crossover sub is moulded to 3PE steel from area packing ring includes:

the steel pipe fitting is provided with an inner wall and an outer wall, the outer wall is divided into a steel-plastic connecting part and a steel end connecting part, a pull-out preventing structure is arranged at the steel-plastic connecting part, and the steel end connecting part is used for connecting a metal pipeline;

the PE part is provided with a first end and a second end, the first end is used for being connected with a plastic pipeline, the second end is used for being sleeved at the steel end connecting part, an oblique angle is formed at the opening part of the second end, and a boss is formed at the tail end of the oblique angle;

the clamping ring is sleeved at the second end of the PE part and abuts against the boss; and

and the 3PE heat-shrinkable sleeve is arranged along part of the outer surface of the first end of the PE piece, the outer surface of the clamping ring, the outer surface of the bevel angle and the outer surface of the steel end connecting part.

Optionally, the bevel is biased from the outer wall to the inner wall of the PE piece.

Optionally, the height of the boss is consistent with the outer diameter of the clamping ring.

Optionally, the anti-pulling-out structure is an annular barb arranged on the steel-plastic connecting part.

Optionally, the 3PE steel-plastic adapter further comprises a sealing structure disposed at the steel-plastic connection portion for sealing the connection portion of the steel pipe and the PE member.

Optionally, the sealing structure comprises:

the groove is formed at the front end of the steel-plastic connecting part and is provided with an annular groove along the circumferential direction; and

and the O-shaped sealing ring is arranged in the groove.

The utility model provides a crossover sub is moulded to 3PE steel from area packing ring, including steel pipe fitting, PE spare, clamp ring and 3PE thermal shrinkable sleeve, form the oblique angle through the oral area at the second end of PE spare, the terminal boss that forms of oblique angle, the PE spare forms the structure from area packing ring promptly. The baked 3PE heat shrinkable sleeve can be well bonded with the oblique angle in the PE part, the problem that the position is the weak point of peeling strength in the past is solved, the corrosion resistance is enhanced, the potential safety hazard is reduced for the operation of a gas pipe network, and meanwhile, the labor cost is saved. Furthermore, the lug boss of the PE piece can simultaneously play a role of a stop ring, so that the clamping ring is easier to position in the assembling process.

The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic cross-sectional view of a 3PE steel-plastic crossover joint with a self-filling gasket according to one embodiment of the present application.

The symbols in the drawings represent the following meanings:

100 3PE steel-plastic conversion joint with filling gasket,

PE part, 11 first end, 12 second end, 13 bevel, 14 boss,

2. a steel pipe, a 21 steel-plastic connecting part, a 22 steel end connecting part, a 23 anti-pulling-out structure, a 24 sealing structure,

3. the clamping ring is provided with a clamping ring,

4.3PE thermal shrinkable sleeve.

Detailed Description

FIG. 1 is a schematic cross-sectional view of a 3PE steel-plastic crossover joint with a self-filling gasket according to one embodiment of the present application. The present embodiment provides a 3PE steel-plastic crossover joint 100 with a self-contained filler gasket, which may generally include: the pipe fitting comprises a steel pipe fitting 2, a PE (polyethylene) fitting 1, a clamping ring 3 and a 3PE heat-shrinkable sleeve 4. The steel pipe 2 has an inner wall and an outer wall. The outer wall is divided into a steel-plastic connecting part 21 and a steel end connecting part 22. The steel-plastic connecting part 21 is provided with an anti-pull-out structure 23. The steel end connection 22 is used for connecting metal pipes. The PE member 1 has a first end 11 and a second end 12. The first end 11 is for connection to a plastic pipe. The second end 12 is adapted to be fitted around the steel end connection 22. The mouth of the second end 12 forms a bevel 13 and the end of the bevel 13 forms a boss 14. The clamping ring 3 is sleeved at the second end 12 of the PE member 1 and abuts against the boss 14. The 3PE heat shrinkable sleeve 4 is arranged along part of the outer surface of the first end 11 of the PE member 1, the outer surface of the clamping ring 3, the outer surface of the bevel 13 and the outer surface of the steel end connecting part 22.

The utility model provides a crossover sub 100 is moulded to 3PE steel from area packing ring, including steel pipe fitting 2, PE spare 1, clamping ring 3 and 3PE thermal shrinkable sleeve 4. By forming a bevel 13 at the mouth of the second end 12 of the PE piece 1, the end of the bevel 13 forms a boss 14, i.e. the PE piece 1 is formed with a self-filling gasket. The problem of among the prior art, need fill filling material such as viscoelastic body, putty, PE circle in steel pipe fitting 2 and the 1 joint gap of PE piece in 3PE pyrocondensation cover 4 baking process needs be solved. The 3PE thermal shrinkable sleeve 4 baked in the application can be well bonded with the bevel 13 in the PE part 1, the problem of weak point of peeling strength in the past is avoided, the corrosion resistance is enhanced, the potential safety hazard is reduced for the operation of a gas pipe network, and the labor cost is saved. Furthermore, the projection 14 of the PE element 1 can simultaneously function as a stop ring, which makes it easier to position the clamping ring 3 during assembly. The problem of clamping ring pressure equipment in-process unable accurate positioning among the prior art is solved, perhaps, adopt the mode of metal stop ring, need weld to the steel pipe fitting on, increased metal material and cost of labor's problem.

More specifically, the bevel 13 is deflected from the outer wall to the inner wall of the PE element 1.

More specifically, the height of the boss 14 substantially corresponds to the outer diameter dimension of the clamping ring 3.

More specifically, the anti-pulling-out structure 23 is an annular barb arranged on the steel-plastic connecting part 21. Of course, other structures capable of preventing the pulling-out can be adopted.

Further, the 3PE steel-plastic adapter further comprises a sealing structure 24 disposed at the steel-plastic connection portion 21 for sealing the connection portion between the steel pipe 2 and the PE member 1 and preventing leakage of the fluid conveyed therein.

More specifically, the seal structure 24 includes: a groove and an O-shaped sealing ring. A groove is formed at the front end of the steel-plastic connecting portion 21 and provided with an annular groove in the circumferential direction thereof. An O-shaped sealing ring is arranged in the groove.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "a plurality" means two or more unless specifically defined otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. 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 this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (6)

1. The utility model provides a crossover sub is moulded to 3PE steel from area packing ring which characterized in that includes:

the steel pipe fitting is provided with an inner wall and an outer wall, the outer wall is divided into a steel-plastic connecting part and a steel end connecting part, a pull-out preventing structure is arranged at the steel-plastic connecting part, and the steel end connecting part is used for connecting a metal pipeline;

the PE part is provided with a first end and a second end, the first end is used for being connected with a plastic pipeline, the second end is used for being sleeved at the steel end connecting part, an oblique angle is formed at the opening part of the second end, and a boss is formed at the tail end of the oblique angle;

the clamping ring is sleeved at the second end of the PE part and abuts against the boss; and

and the 3PE heat-shrinkable sleeve is arranged along part of the outer surface of the first end of the PE piece, the outer surface of the clamping ring, the outer surface of the bevel angle and the outer surface of the steel end connecting part.

2. A 3PE steel plastic crossover joint according to claim 1, characterized in that the bevel is inclined from the outer wall to the inner wall of the PE piece.

3. The 3PE steel-plastic conversion joint according to claim 1, wherein the height of the boss is consistent with the outer diameter of the clamping ring.

4. The 3PE steel-plastic conversion joint according to claim 1, wherein the anti-pulling-out structure is an annular barb arranged on the steel-plastic connecting part.

5. The 3PE steel-plastic conversion joint according to any one of claims 1-4, further comprising a sealing structure arranged at the steel-plastic connecting part and used for sealing the connecting part of the steel pipe fitting and the PE fitting.

6. The 3PE steel-plastic conversion joint according to claim 5, wherein the sealing structure comprises:

the groove is formed at the front end of the steel-plastic connecting part and is provided with an annular groove along the circumferential direction; and

and the O-shaped sealing ring is arranged in the groove.

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