CN210179075U - PE pipeline and geomembrane butt-joint structure - Google Patents

Abstract

The utility model relates to a seepage prevention structure correlation field specifically is a PE pipeline and geomembrane butt joint structure, aims at solving among current PE pipeline and the geomembrane butt joint structure that the geomembrane tears easily, the hot melt welding machine welds the technical problem that the degree of difficulty is big. The device comprises a substrate, wherein a plurality of PE pipes are inserted into the surface of the substrate; still include the geomembrane and extend the piece, the geomembrane extends the piece and corresponds every PE pipe and all seted up the through-hole so that the geomembrane extends the piece and hugs closely on the basement surface, its characterized in that: the geomembrane pipe is arranged corresponding to the PE pipe and sleeved outside the PE pipe, the wall of one end of the geomembrane pipe is welded on the edge of the through hole of the geomembrane extending sheet in a sealing mode, and the wall of the other end of the geomembrane pipe is welded on the side wall of the PE pipe in a sealing mode.

Description

PE pipeline and geomembrane butt-joint structure

Technical Field

The utility model relates to a seepage prevention structure field of being correlated with specifically is a PE pipeline and geomembrane butt joint structure.

Background

The key of engineering construction of hazardous (solid) waste storage sites, refuse landfill sites, aquaculture farms and the like is seepage prevention treatment, the butt joint of a PE pipeline and a geomembrane is a key node of the seepage prevention treatment, the treatment is careless, if tiny welding leakage, fine seams or finished product damage can cause seepage, seepage liquid can pollute water and soil under the long-term seepage and diffusion effects of rainwater and underground water, poisoning of surrounding people can be caused by ingestion, suction, skin absorption and eye contact, and serious cancer, deformity and deformation can be caused. The existing butt joint of the PE pipeline and the geomembrane generally adopts the following method: cutting a plurality of holes on the geomembrane corresponding to the layout of the PE pipes, then sleeving the holes to the root parts of the PE pipes, and welding by a hot melting welding machine or bonding by asphalt cement. Such a butt joint structure has two problems as follows: firstly, a gap exists between the geomembrane and the base at the root of the PE pipeline, and the geomembrane is lack of support and is easy to tear due to extrusion; secondly, the PE pipelines are arranged in parallel or in a matrix or in a bundle shape to be diffused and penetrated out, the net distance is small or even zero, the operation of personnel can be seriously influenced, and even the hot-melting welding machine can not carry out welding, so that the construction quality defect is caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving among current PE pipeline and the geomembrane butt joint structure geomembrane tear easily, the hot melt welding machine welds the big technical problem of the degree of difficulty. Therefore, the utility model provides a novel PE pipeline and geomembrane butt-joint structural adopts following scheme: .

A butt joint structure of a PE pipeline and a geomembrane comprises a base, wherein a plurality of (at least one) PE pipes are inserted into the surface of the base (the insertion can be vertical insertion or inclined insertion); the geomembrane extending sheet is provided with through holes corresponding to each PE pipe so that the geomembrane extending sheet is tightly attached to the surface of a substrate (the through holes are used for avoiding the PE pipes, so that the geomembrane extending sheet can be tightly attached to the surface of the substrate), and the geomembrane extending sheet also comprises a geomembrane sleeve which is arranged corresponding to the PE pipes (namely, the geomembrane sleeve and the PE pipes are in one-to-one correspondence) and sleeved outside the PE pipes (namely, the sleeve rolled by the geomembrane is adopted, so that the geomembrane extending sheet material is consistent with the geomembrane extending sheet material, the welding is convenient, and the anti-, the wall of one end of the geomembrane sleeve is sealed and welded on the edge of the through hole of the geomembrane extension sheet (namely, the geomembrane sleeve and the through hole have the same diameter and adopt a full-length welding mode to achieve sealing), the wall of the other end of the geomembrane sleeve is hermetically welded on the side wall of the PE pipe (full welding is adopted to achieve sealing).

The utility model has the advantages that:

the utility model provides a butt joint structure of a PE pipeline and a geomembrane, which is additionally provided with a geomembrane sleeve, one end of the geomembrane sleeve is hermetically welded on a through hole of a geomembrane extension sheet, and the other end of the geomembrane sleeve is hermetically welded on the side wall of the PE pipeline; on the other hand, after the geomembrane sleeve and the geomembrane extension sheet are welded in advance, the geomembrane sleeve and the geomembrane extension sheet are sleeved on the PE pipe, so that the welding position moves from the bottom of the PE pipe to the outer end part of the PE pipe, the welding operation of a hot melting welding machine is facilitated, the processing efficiency is improved, the processing quality is improved, the sleeve manufacturing and welding fixing methods are kept consistent with those of a base material, the waste of materials and tools is avoided, and the call of energy conservation, consumption reduction and environmental protection in China is actively responded.

Drawings

FIG. 1 is a perspective view of a docking structure;

fig. 2 is a cross-sectional view of the docking structure.

Detailed Description

Referring to fig. 1 to 2, the butt joint structure of the PE pipe and the geomembrane of the present invention includes a base 1, wherein a plurality of PE pipes 2 are inserted on the surface of the base 1; still include geomembrane extension piece 4, the geomembrane extension piece 4 corresponds every PE pipe 2 and has all seted up the through-hole so that geomembrane extension piece 4 hugs closely on basement 1 surface, still including corresponding PE pipe 2 setting and suit at the outer geomembrane sleeve pipe 3 of PE pipe 2, the wall seal welding of the one end of geomembrane sleeve pipe 3 is on the edge of the through-hole of geomembrane extension piece 4, the wall seal welding of the other end of geomembrane sleeve pipe 3 is on the lateral wall of PE pipe 2.

Further, the diameter of the through hole is 80-100mm, preferably 100mm larger than the outer diameter of the PE pipe 2, the geomembrane sleeve 3 is a circular truncated cone-shaped cylindrical structure, the diameter of the small diameter end of the circular truncated cone-shaped cylindrical structure is equal to the outer diameter of the PE pipe 2, and the diameter of the large diameter end of the circular truncated cone-shaped cylindrical structure is equal to the diameter of the through hole. Such a structure facilitates the sheathing of the geomembrane onto the PE pipe 2.

Further, still including being located the clamp that is used for fixed geomembrane sleeve pipe 3 at 3 axial middle parts of geomembrane sleeve pipe, the clamp is used for fixing geomembrane sleeve pipe 3, has overcome only both ends and has welded the not strong problem of connection stability who leads to.

Preferably, the distance between the clip and the end of the geomembrane sleeve 3 remote from the geomembrane extension piece 4 is 1/5-1/4 of the total length of the geomembrane sleeve 3. This is determined by a number of experimental analyses, and the distance is most preferably 1/5.

As a concrete structure of clamp, the clamp includes the band iron pipe hoop 6 of suit in geomembrane sleeve 3 side, the tip of band iron pipe hoop 6 is locked through bolt 7.

Further, two layers of geotextile 5 are laid between the flat iron pipe hoop 6 and the geomembrane sleeve 3. The geotextile 5 serves as a protective pad between the flat iron pipe hoop 6 and the geomembrane sleeve 3, so that the geomembrane sleeve 3 is protected and the connection and fixation are more stable.

Furthermore, the exposed parts of the flat iron pipe hoop 6 and the bolt 7 are coated with polyurethane anti-corrosion paint layers. Can effectively slow down the corrosion of the exposed flat iron pipe hoop 6 and the bolt 7.

During production, the method can be manufactured by the following steps:

firstly, an optimization scheme is formulated.

And (4) making an optimization scheme according to the position, the interval and the direction of the PE pipe 2 penetrating out of the construction site. The key point of the scheme is to determine the point position of the butt joint part drawn up by the PE pipe 2 and the geomembrane sleeve 3, and the point position requires: after the temporary supporting of the PE pipe 2, the distance between the temporary supporting of the PE pipe 2 and surrounding obstacles is more than or equal to 200mm, meanwhile, the distance between the temporary supporting of the PE pipe 2 and the adjacent PE pipe 2 is more than or equal to 100mm, and then the distance between the point and the root base 1 of the PE pipe 2 is determined, namely the manufacturing length L of the geomembrane sleeve 3; in addition, the outer diameter D of each pipeline at the root position of the PE pipe 2, the arrangement and the net spacing a between the pipelines are also determined and used as the data of the holes of the geomembrane extension sheet 4, and the actual hole spacing is more than the net spacing a +100mm of the pipelines.

And secondly, manufacturing the geomembrane sleeve 3.

Materials: selecting a geomembrane consistent with an engineering anti-seepage main material, wherein the length is the sleeve manufacturing length L determined by an optimization scheme, the length is more than or equal to 800mm in general, and the width is pi D +100mm of the perimeter of the PE pipe 2; 400 g/geotechnical cloth 5 long PE pipeline perimeter pi D2 of square meter, width 100 mm; 30 x 3 flat iron is pi D +80mm long.

Tools and appliances: blanking by a wallpaper cutter and a steel ruler, namely a geomembrane measuring ruler; an angle grinder is matched with an abrasive paper sticking disc, namely a welding position is pre-polished; LST1600A PE hot air gun for temperature adjustment, namely sleeve manufacturing and sleeve welding point bonding and fixing; LST600A type extrusion hot air hot melt plastic welding machine is matched with PE welding rod-sleeve manufacturing and sleeve welding.

The manufacturing method comprises the steps of selecting a section of PE pipeline leftover material as a model according to the manufacturing length of the sleeve, wrapping the selected geomembrane on the pipeline model to form a cylinder shape, overlapping the model by 70mm, performing point bonding by using a PE hot air gun every 50mm along the overlapping position, checking the size of the pipe after cooling, performing full welding along the overlapping position by using a hot melt plastic welding machine until the sleeve is preliminarily formed for later use, bending 30X 3 flat irons around the PE pipeline, bending two ends by 50mm by 90 degrees, forming an opening ø 14 at the center of the end, and inserting a ø 12 bolt 7 for later use.

And thirdly, manufacturing the geomembrane extension sheet 4.

Selecting a geomembrane consistent with the engineering anti-seepage main material, wherein the length and the width of the geomembrane are +2000mm of the length of a single pipeline, parallel or matrix arrangement sheath, and each edge is expanded by 1000mm, so that the geomembrane is convenient to extend; the selected geomembrane is tiled to the flat ground, holes are positioned on the geomembrane according to the outer diameter D of each pipeline at the position of the root of the pipeline, the arrangement and the net spacing a between the pipelines, and the actual spacing of the holes is more than the net spacing a +100mm of the pipelines.

Fourthly, the geomembrane sleeve 3 is welded with the geomembrane extension sheet 4.

Erecting the preliminarily formed geomembrane sleeve 3 together with a pipeline model, erecting the geomembrane sleeve at a corresponding opening position of a geomembrane extension sheet 4 according to a corresponding pipeline position, performing point bonding on the combination position of the geomembrane sleeve 3 and the extension sheet by a PE hot air gun at intervals of 50mm, checking the size after cooling, performing full welding along the lap joint position by a hot melt plastic welding machine, and taking out the pipeline model after cooling; similarly, the geomembrane sleeves 3 arranged in parallel or in a matrix are welded to the geomembrane extension sheet 4 from the middle to the outer side according to the above operation.

And fifthly, installing the geomembrane sleeve 3 and the geomembrane extension sheet 4.

And transferring the welded geomembrane sleeve 3 and the geomembrane extension sheet 4 to a construction position, aligning the sleeve to a corresponding pipeline by adopting manual work or hoisting equipment according to the weight of the sleeve, and sleeving the sleeve into the pipeline according to the advancing direction of the geomembrane extension sheet 4 until the geomembrane extension sheet 4 is tightly attached to the root base 1 of the pipeline.

And sixthly, fixing the geomembrane sleeve 3.

After the geomembrane sleeve 3 is sleeved into a pipeline in place, the geomembrane sleeve returns to 200mm according to the butt joint position, the geotextile 5 is wound for two circles to serve as a protection pad, the geotextile 5 is sleeved with 30-3 flat iron pipe hoops 6, the bolts 7 are screwed, and the outer leakage part is coated with polyurethane anticorrosive paint.

And seventhly, welding the geomembrane sleeve 3 and the PE pipe 2.

And fully welding the butt joint part of the geomembrane sleeve 3 and the PE pipe 2 along the lap joint position by using a hot melt plastic welding machine.

Wherein the fourth and seventh steps result in the formation of a weld 8.

While the invention has been particularly shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (7)

1. The butt joint structure of the PE pipeline and the geomembrane comprises a base (1), wherein a plurality of PE pipes (2) are inserted into the surface of the base (1); still include geomembrane extension piece (4), the geomembrane extension piece (4) correspond every PE pipe (2) and have all seted up the through-hole so that geomembrane extension piece (4) hug closely on basement (1) surface, its characterized in that: still including corresponding PE pipe (2) setting and suit geomembrane sleeve pipe (3) outside PE pipe (2), the wall seal welding of the one end of geomembrane sleeve pipe (3) is on the edge of the through-hole of geomembrane extension piece (4), the wall seal welding of the other end of geomembrane sleeve pipe (3) is on the lateral wall of PE pipe (2).
2. 2. The PE pipe and geomembrane interfacing structure according to claim 1, wherein: the diameter of the through hole is 80-100mm larger than the outer diameter of the PE pipe (2), the geomembrane sleeve (3) is of a circular truncated cone-shaped tubular structure, the diameter of the small-diameter end of the circular truncated cone-shaped tubular structure is equal to the outer diameter of the PE pipe (2), and the diameter of the large-diameter end of the circular truncated cone-shaped tubular structure is equal to the diameter of the through hole.
3. 3. The PE pipe and geomembrane interfacing structure according to any one of claims 1 or 2, wherein: the geomembrane sleeve fixing device further comprises a hoop which is positioned at the axial middle part of the geomembrane sleeve (3) and used for fixing the geomembrane sleeve (3).
4. 4. The PE pipe and geomembrane interfacing structure according to claim 3, wherein: the distance between the clamp and one end of the geomembrane sleeve (3) far away from the geomembrane extension sheet (4) is 1/5-1/4 of the total length of the geomembrane sleeve (3).
5. 5. The PE pipe and geomembrane interfacing structure according to claim 4, wherein: the clamp comprises a flat iron pipe hoop (6) sleeved on the side face of the geomembrane sleeve (3), and the end part of the flat iron pipe hoop (6) is locked through a bolt (7).
6. 6. The PE pipe and geomembrane interfacing structure according to claim 5, wherein: two layers of geotextile (5) are laid between the flat iron pipe hoop (6) and the geomembrane sleeve (3).
7. 7. The PE pipe and geomembrane interfacing structure according to claim 6, wherein: and exposed parts of the flat iron pipe hoop (6) and the bolt (7) are coated with polyurethane anti-corrosion paint layers.

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