CN204004836U - Under ground piping anti-leakage structure - Google Patents
Under ground piping anti-leakage structure Download PDFInfo
- Publication number
- CN204004836U CN204004836U CN201420389960.7U CN201420389960U CN204004836U CN 204004836 U CN204004836 U CN 204004836U CN 201420389960 U CN201420389960 U CN 201420389960U CN 204004836 U CN204004836 U CN 204004836U
- Authority
- CN
- China
- Prior art keywords
- sand pocket
- under ground
- film
- sand
- leakage structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004576 sand Substances 0.000 claims abstract description 59
- -1 polyethylene Polymers 0.000 claims abstract description 21
- 239000011248 coating agent Substances 0.000 claims abstract description 20
- 238000000576 coating method Methods 0.000 claims abstract description 20
- 239000010865 sewage Substances 0.000 claims abstract description 20
- 239000004698 Polyethylene Substances 0.000 claims abstract description 19
- 229920000573 polyethylene Polymers 0.000 claims abstract description 19
- 239000004746 geotextile Substances 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 4
- 240000000491 Corchorus aestuans Species 0.000 claims description 2
- 235000011777 Corchorus aestuans Nutrition 0.000 claims description 2
- 235000010862 Corchorus capsularis Nutrition 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 230000008929 regeneration Effects 0.000 claims description 2
- 238000011069 regeneration method Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 229920001903 high density polyethylene Polymers 0.000 abstract description 16
- 239000004700 high-density polyethylene Substances 0.000 abstract description 16
- 239000000356 contaminant Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 15
- 230000004888 barrier function Effects 0.000 description 9
- 239000010410 layer Substances 0.000 description 7
- 239000004575 stone Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 239000011241 protective layer Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 229920006262 high density polyethylene film Polymers 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
Landscapes
- Revetment (AREA)
Abstract
The utility model discloses a kind of under ground piping anti-leakage structure; mainly by sump oil or sewage conduct, sand pocket coating, high density polyethylene (HDPE) (HDPE) film and film external protection, formed; described sand pocket coating is wrapped on sump oil or sewage conduct outer wall and is formed by banded sand pocket; coated density polyethylene film with high on sand pocket coating, coating film external protection on density polyethylene film with high.This under ground piping anti-leakage structure can effectively reach the object of leakage proof and contaminant collecting, can reduce engineering cost, improves site operation efficiency.
Description
Technical field
The utility model relates to a kind of anti-leakage structure for petrochemical industry, relates in particular to a kind of under ground piping anti-leakage structure.
Background technique
In petroleum chemical engineering, there are a lot of underground sump oils or sewage conduct, the pollution that may cause groundwater environment for sump oil, sewage of avoiding pipe leakage etc., according to the requirement of < < petroleum chemical engineering seepage control technique standard > > GB/T50934-2013, when one-level manage, manage secondary while adopting non-steel metallic conduit (be generally socket joint, flange connects), connection part is weak link, easily produce and reveal, need take corresponding seepage control measure.The impervious barrier structure of available technology adopting is mainly comprised of film external protection, density polyethylene film with high (HDPE), film inner protective layer, sand stone layer and medium-sand seam.Above-mentioned impervious barrier working procedure is more, and part operation difficulty of construction is larger, and raw materials consumption amount is large, great in constructing amount, and cost is high, and scene exists cross-operation, also needs to prevent that density polyethylene film with high is damaged in work progress simultaneously.
Model utility content
More in order to solve the impervious barrier working procedure that prior art exists, part operation difficulty of construction is larger, raw materials consumption amount is large, the technical problem such as great in constructing amount, the utility model provides a kind of under ground piping anti-leakage structure, this structure can effectively reach the object of leakage proof and contaminant collecting, reduces engineering cost, improves site operation efficiency.
The under ground piping anti-leakage structure that the utility model provides is mainly comprised of sump oil or sewage conduct, sand pocket coating, high density polyethylene (HDPE) (HDPE) film and film external protection; described sand pocket coating is wrapped on sump oil or sewage conduct outer wall and is formed by banded sand pocket; coated density polyethylene film with high on sand pocket coating, coating film external protection on density polyethylene film with high.
Described banded sand pocket is comprised of the medium coarse sand of banded package bag and Qi Nei filling, after filling, the banded sand pocket of gained is wrapped on sump oil or sewage conduct outer wall with spiral, described medium coarse sand be granule content that particle diameter is greater than 0.25mm surpass full weight 50%, the particle diameter granule content that is greater than 2mm is no more than 25% sand of full weight; Described film external protection is made by long filament non-woven geotextile.
The under ground piping anti-leakage structure that the utility model provides compared with prior art, has following effect:
(1) banded sand pocket can fill in batch in advance.Except pipe coupling position needs site operation, sump oil or whole section of the sewage conduct that other can have been wrapped up to banded sand pocket, density polyethylene film with high and film external protection are prefabricated in advance in concentrated area, have both guaranteed construction quality, have improved again efficiency;
(2) save film inner protective layer, reduced cost;
(3) cancelled the sand stone layer under sump oil of the prior art or sewage conduct, the back-up sand amount of the banded sand pocket sand loading of employing also greatly reduces, thereby has also improved efficiency of construction when saving cost;
DN300 sump oil (water) pipeline of take is example, adopts existing high density polyethylene (HDPE) (HDPE) film impervious barrier, and HDPE film+double-deck long filament non-woven geotextile approximately needs 2.5m
2/ m, gradated sand-stone cushion approximately needs 0.145m
3/ m, medium-sand seam approximately needs 0.18m
3/ m.
Adopt the utility model, every meter of engineering work load is as follows: density polyethylene film with high+individual layer long filament non-woven geotextile approximately needs 1.81m
2/ m, the thick medium coarse sand of packed 100mm approximately needs 0.134m
3/ m.
With reference to the price of HDPE film, according to 1.5mm thick HDPE film+double-deck 500g/m
290 yuan/m of long filament non-woven geotextile
2, the thick HDPE film+individual layer of 1.5mm 500g/m
270 yuan/m of long filament non-woven geotextile
2, 230 yuan/m of gradated sand-stone cushion
3, 115 yuan/m of medium-sand seam
3, 117 yuan/m of packed medium coarse sand
3estimation, existing high density polyethylene (HDPE) (HDPE) film impervious barrier approximately needs 278 yuan/m, and the utility model only needs approximately 142 yuan/m, saves approximately 50% expense, remarkable in economical benefits.
Accompanying drawing explanation
Fig. 1 is the impervious barrier structural representation of available technology adopting;
Fig. 2 is the structural representation of under ground piping anti-leakage structure of the present utility model;
Fig. 3 is the winding structure schematic diagram of banded sand pocket of the present utility model.
In figure: 1-film external protection, 2-density polyethylene film with high, 3-film inner protective layer, 4-sand stone layer, 5-medium-sand seam, 6-sump oil or sewage conduct, 7-sand pocket coating.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
Fig. 1 is the impervious barrier structural representation of available technology adopting, impervious barrier in figure is when construction, first excavate out pipe trench, compacting pipe trench basis, then lay film external protection 1, on film external protection 1, lay density polyethylene film with high 2, on density polyethylene film with high 2, lay film inner protective layer 3, then on film inner protective layer 3, lay sand stone layer 4 compacting, in sand stone layer 4, lay sump oil or sewage conduct 6, filling pipeline both sides medium-sand seam 5 compacting after sump oil or sewage conduct 6 examination water, then closing membrane external protection 1, density polyethylene film with high 2 and film inner protective layer 3, finally by backfilling of pipe canal compacting.Above-mentioned impervious barrier working procedure is many, and difficulty of construction is large, and raw materials consumption amount is large, great in constructing amount, and cost is high.
Fig. 2 is the structural representation of under ground piping anti-leakage structure of the present utility model; the under ground piping anti-leakage structure that the utility model provides is mainly by sump oil or sewage conduct 6, sand pocket coating 7, high density polyethylene (HDPE) (HDPE) film 2 and 1 one-tenth of film external protection group; described sand pocket coating 7 is wrapped on sump oil or sewage conduct outer wall and is formed by banded sand pocket; coated density polyethylene film with high 2 on sand pocket coating 7; coating film external protection 1 on density polyethylene film with high 2, film external protection 1 is made by long filament non-woven geotextile.
Described banded sand pocket is comprised of the medium coarse sand of banded package bag and Qi Nei filling, the diameter of banded package bag is 150mm～180mm, the charging quantity of medium coarse sand accounts for 60%～80% of banded package bag volume, after filling, the banded sand pocket of gained is wrapped on sump oil or sewage conduct 6 outer walls with helical, as shown in Figure 3, the span w that the helical of take is wrapped between the banded sand pocket on sump oil or sewage conduct outer wall is 0mm～50mm, the thickness h that is wound around the sand pocket coating 7 of gained is 100mm～150mm, and sand pocket coating 7 use steel wire windings are fastening.
Described banded package bag can adopt polypropylene woven cloth, jute sheet or regeneration cloth etc. to have the material of good permeable, gas permeability, and (permeability should be greater than 1 * 10
-2cm/s) make, need possess certain corrosion-resistant, aging quality resistance, sand loading is difficult for leakage, has enough tensile strength, can bear bag interior sand loading deadweight and the crooked pulling force producing (the 180 ° of test sand pockets of bending during Bend diameter 7.5cm should keep complete).
The medium coarse sand that filling adopts, clay content is not more than 3% (mass percent).Because adopt the banded package bag of finished product to concentrate, fill, can control to greatest extent the quality of back-up sand, avoid sneaking into silt, thereby affect the water permeability of banded sand pocket.
The thickness of described density polyethylene film with high 2 is 1mm～2mm, and jointing adopts the mode that heat is melted welding to seal.
Described long filament non-woven geotextile adopts the material that meets standard < < geosynthetics long filament spun-bonded needle punched non-woven geotextile > > (GB/T17639-2008) relevant requirements, its nominal rupture strength is 25kN/m～50kN/m, and mass area ratio is 400g/m
2～600g/m
2.
Claims (7)
1. a under ground piping anti-leakage structure; it is characterized in that: mainly by sump oil or sewage conduct, sand pocket coating, density polyethylene film with high and film external protection, formed; described sand pocket coating is wrapped on sump oil or sewage conduct outer wall and is formed by banded sand pocket; coated density polyethylene film with high on sand pocket coating, coating film external protection on density polyethylene film with high.
2. under ground piping anti-leakage structure according to claim 1, is characterized in that: described banded sand pocket is comprised of the medium coarse sand of banded package bag and Qi Nei filling, and the charging quantity of medium coarse sand accounts for 60%～80% of banded package bag volume.
3. under ground piping anti-leakage structure according to claim 2, is characterized in that: the diameter of described banded package bag is 150mm～180mm, by polypropylene woven cloth, jute sheet or regeneration cloth, is made.
4. according to the arbitrary under ground piping anti-leakage structure described in claim 1～3, it is characterized in that: described banded sand pocket is wrapped on sump oil or sewage conduct outer wall with helical, the span that the helical of take is wrapped between the banded sand pocket on sump oil or sewage conduct outer wall is 0mm～50mm.
5. according to the arbitrary under ground piping anti-leakage structure described in claim 1～3, it is characterized in that: the thickness of described sand pocket coating is 100mm～150mm.
6. according to the arbitrary under ground piping anti-leakage structure described in claim 1～3, it is characterized in that: the thickness of described density polyethylene film with high is 1mm～2mm, jointing adopts the mode that heat is melted welding to seal.
7. according to the arbitrary under ground piping anti-leakage structure described in claim 1～3, it is characterized in that: described film external protection is made by long filament non-woven geotextile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420389960.7U CN204004836U (en) | 2014-07-07 | 2014-07-07 | Under ground piping anti-leakage structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420389960.7U CN204004836U (en) | 2014-07-07 | 2014-07-07 | Under ground piping anti-leakage structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204004836U true CN204004836U (en) | 2014-12-10 |
Family
ID=52044839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420389960.7U Expired - Lifetime CN204004836U (en) | 2014-07-07 | 2014-07-07 | Under ground piping anti-leakage structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204004836U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235495A (en) * | 2018-10-23 | 2019-01-18 | 中石化石油工程技术服务有限公司 | The preparation method of buried pipeline leakage protection structure and buried pipeline leakage protection structure |
| CN110130365A (en) * | 2018-02-02 | 2019-08-16 | 上海清远管业科技股份有限公司 | A kind of backfill component for plastic pipe rapid construction |
| CN112144570A (en) * | 2020-08-05 | 2020-12-29 | 中石化宁波工程有限公司 | Anti-leakage structure of underground pipeline and construction method thereof |
-
2014
- 2014-07-07 CN CN201420389960.7U patent/CN204004836U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130365A (en) * | 2018-02-02 | 2019-08-16 | 上海清远管业科技股份有限公司 | A kind of backfill component for plastic pipe rapid construction |
| CN109235495A (en) * | 2018-10-23 | 2019-01-18 | 中石化石油工程技术服务有限公司 | The preparation method of buried pipeline leakage protection structure and buried pipeline leakage protection structure |
| CN112144570A (en) * | 2020-08-05 | 2020-12-29 | 中石化宁波工程有限公司 | Anti-leakage structure of underground pipeline and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |