CN104033668A - PCCP (pre-stressed concrete cylinder pipe) with modified PVC (polyvinyl chloride) liner and PCCP manufacturing method - Google Patents
PCCP (pre-stressed concrete cylinder pipe) with modified PVC (polyvinyl chloride) liner and PCCP manufacturing method Download PDFInfo
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- CN104033668A CN104033668A CN201410280040.6A CN201410280040A CN104033668A CN 104033668 A CN104033668 A CN 104033668A CN 201410280040 A CN201410280040 A CN 201410280040A CN 104033668 A CN104033668 A CN 104033668A
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- pccp
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/153—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and concrete with or without reinforcement
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention relates to the field of PCCPs (pre-stressed concrete cylinder pipes), in particular to a PCCP with a modified PVC (polyvinyl chloride) liner and a PCCP manufacturing method. The PCCP with the modified PVC liner comprises a cylinder portion, a bell mouth steel ring and a socket steel ring, and the bell mouth steel ring and the socket steel ring are arranged at two ends of the cylinder portion respectively. The cylinder portion comprises a PVC erosion-proof plate, a pipe core, a steel cylinder, a steel cylinder outer wall concrete layer and an epoxy coal tar pitch protection layer sequentially from inside to outside. Pre-stressed steel wires are arranged between the outer surface of the steel cylinder outer wall concrete layer and the epoxy coal tar pitch protection layer.
Description
Technical field
The present invention relates to PCCP pipe field, PCCP pipe of espespecially a kind of liner modified PVC and preparation method thereof.
Background technique
People live water, coal gas and the rock gas of use, basic employing all carried with PCCP pipe.In today of economic technology high speed development, some great Infrastructure, equipment are called lifeline engineering, and this type of construction project is related to a city, a regional water safety even, relation is produced, living guarantee, is related to the stable, harmonious of entire society.
At present in fields such as long-range water delivery, urban water guarantees, on a large scale, the use of long distance.The common distribution distance of conveyance conduit is long, and region span is large.The life-span of tubing is extremely important, and life-span of not making any corrosion-resistant tubing, even shorter, after this aseptic technic, the life-span of tubing promoted greatly, can reach 60-100 generally about 30 years.Due to the installation of these pipe built-in formulas, once tubing corrodes, basic people cannot find in time, until find after serious leakage, in even carrying, has no progeny, and just pinpoints the problems, and this often causes the adverse consequencess such as the people and national wealth suffer heavy losses.
At present, PCCP inner tube wall aseptic technic is mainly contained to brushwork epoxy resin paint, this material and concrete surface cohesiveencess are bad, will come off, and construction are complicated after water soaking, and cost is high.
In order to find a kind of economical and practical, anticorrosive, environment-friendly products of having traditional product advantage concurrently, intend adopting a kind of new composite pipe production technology, at PCCP inner tube wall, be lining with one deck modified PVC erosion protection sheild, outside following the advantage such as economical and practical, easy for installation, good rigidity of conventional P CCP pipe, there is good corrosion-resisting function and less resistance to water-flow simultaneously, thereby solve the difficult situation that PCCP cannot be used in sewage treatment, the utilization field of widening PCCP pipe.
Summary of the invention
For addressing the above problem, the invention provides PCCP pipe of the good liner modified PVC of a kind of economical and practical, easy for installation, good rigidity, anti-corrosive properties and preparation method thereof.
For achieving the above object; the technical solution used in the present invention is: a kind of PCCP pipe of liner modified PVC; it is characterized in that: comprise shell portion; and the bellmouth steel loop and the socket steel ring that are arranged at shell portion two ends; shell portion is followed successively by PVC erosion protection sheild, tube core, steel cylinder, steel cylinder outer wall concrete layer and epoxide coal bituminous protective layer from inside to outside; wherein, between the outer surface of steel cylinder outer wall concrete layer and epoxide coal bituminous protective layer, be provided with reinforcement wire.
Preferably, described tube core is steel cylinder internal-wall concrete layer.
A method of making the PCCP pipe of liner modified PVC, is characterized in that: comprise the steps:
Step 1: prepare cement, sand, stone, water, admixture, active blending material and make concrete.
Step 2: make bellmouth steel loop, with cutting equipment by qualified steel plate in accordance with regulations width cut into band steel, bellmouth endless belt steel after customized cut-off is placed on connecting ring line belt, start plate bending rolls, be rolled into open annular, now should be on the external diameter of socket hoop with the thickness mark on steel, with electric wire hoist, trip ring is delivered to welding fixture, be contained on fixture, must make two joints in middle Shaft alignment state, and play movement will keep 5mm spacing, welded, after weld joint on inner side is soldered, " V " shape groove will be beaten in outside, and then welding.Internally polish in outside respectively, and socket hoop weld is delivered to bellmouth roller pressing forming machine, by its rolling formation, the socket hoop of rolling formation delivered to socket joint choma Rise round machine, selects the suitable socket hoop round mould that rises, and being risen to justify draws socket hoop and be under lock and key.
Step 3: make socket steel ring, as step 1.
Step 4: make steel cylinder, steel cylinder adopts cold-reduced sheet or hot rolled plate to roll welding through spiral automatic welding or splicing and makes, and described steel cylinder head end welds with socket steel ring, described steel cylinder tail end and bellmouth steel ring welding.
Step 5: steel cylinder hydraulic test, whether check steel cylinder leaks, and repairs if having, enters after the assay was approved step 6.
Step 6: around note concrete for making tube core.
Step 7: at steel cylinder internal mold laminating PVC erosion protection sheild.
Step 8: tube core maintenance, minute quiet stops, intensification, constant temperature, cooling four-stage.
Step 9: the tube core demoulding, tube core concrete demoulding intensity is not less than 20-30MPa.
Step 10: the outer surface of steel cylinder outer wall concrete layer twines silk, and steel cylinder is cooled to room temperature, reaches after twining an intensity and twines silk.
Step 11: employing roller penetrates method or spraying method is made epoxide coal bituminous protective layer.
Step 12: Checking of finished products, comprises that external pressure load, interior hydraulic pressure, the insulation of some spark detect, retainingf key anti-pulling intensity detection.
Preferably, in described step 6, tube core adopts centrifuging process to make or adopts vertical vibrating technique to make.
Preferably, in described step 6, centrifuging process is that centrifugal rotational speed divides low high speed, and centrifuging process system is adjusted according to different bores, should to tube wall liner, carry out smooth processing in time and get rid of more than inwall and starch after centrifugal end;
Preferably, in described step 6, note watering the concrete time lag to be no more than 30min during the moulding of vertical vibrating method, whole molding times of every tube core are no more than jelling time.
Preferably, in described step 8, between the quiet stopping time, be no less than 1 hour; Warming velocity is not more than 22 ℃/h constant temperature maximum temperature should not be higher than 60-85 ℃.
Preferably, in described step 10, twine a stress and should not surpass 0.75fpyk, wave range is no more than 10%; Before twining silk, spray cement paste.
Preferably, in described step 11, the epoxide coal bituminous protective layer compressive strength of protective layer is not less than 45MPa.
Beneficial effect of the present invention is:
1. the present invention utilizes PCCP pipe high strength, high permeability resistant and high leak tightness and PVC anticorrosion properties, and the two is organically combined, and develops a kind of brand-new tubing.This kind of tubing has solved the difficult situation that PCCP cannot be used in sewage treatment, widened the utilization field of PCCP pipe, increased the market space, because this tubing is outside keeping the execution conditions of PCCP pipe, solved well etch-proof problem, and the expense increasing is also few, therefore rising greatly
2. the present invention adopts modified PVC sheet material to avoid PCCP to manage the defects such as existing imporosity or breakage or not prison welding.
3. retainingf key anti-pulling intensity >=14N/mm of the present invention.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present invention.
Embodiment
Refer to shown in Fig. 1; the present invention is about a kind of PCCP pipe of liner modified PVC; it is characterized in that: comprise shell portion 1; and the bellmouth steel loop 2 and the socket steel ring 3 that are arranged at shell portion two ends; cylindrical shell 1 part is followed successively by PVC erosion protection sheild 11, tube core 12, steel cylinder 13, steel cylinder outer wall concrete layer 14 and epoxide coal bituminous protective layer 15 from inside to outside; wherein, 15 of the outer surface of steel cylinder outer wall concrete layer 14 and epoxide coal bituminous protective layers are provided with reinforcement wire 16.
Preferably, described tube core 12 is steel cylinder internal-wall concrete layer.
A method of making the PCCP pipe of liner modified PVC, is characterized in that: comprise the steps:
Step 1: prepare cement, sand, stone, water, admixture, active blending material and make concrete.
Step 2: make bellmouth steel loop, with cutting equipment by qualified steel plate in accordance with regulations width cut into band steel, bellmouth endless belt steel after customized cut-off is placed on connecting ring line belt, start plate bending rolls, be rolled into open annular, now should be on the external diameter of socket hoop with the thickness mark on steel, with electric wire hoist, trip ring is delivered to welding fixture, be contained on fixture, must make two joints in middle Shaft alignment state, and play movement will keep 5mm spacing, welded, after weld joint on inner side is soldered, " V " shape groove will be beaten in outside, and then welding.Internally polish in outside respectively, and socket hoop weld is delivered to bellmouth roller pressing forming machine, by its rolling formation, the socket hoop of rolling formation delivered to socket joint choma Rise round machine, selects the suitable socket hoop round mould that rises, and being risen to justify draws socket hoop and be under lock and key.
Step 3: make socket steel ring, as step 1.
Step 4: make steel cylinder, steel cylinder adopts cold-reduced sheet or hot rolled plate to roll welding through spiral automatic welding or splicing and makes, and described steel cylinder head end welds with socket steel ring, described steel cylinder tail end and bellmouth steel ring welding.
Step 5: steel cylinder hydraulic test, whether check steel cylinder leaks, and repairs if having, enters after the assay was approved step 6.
Step 6: around note concrete for making tube core.
Step 7: at steel cylinder internal mold laminating PVC erosion protection sheild.
Step 8: tube core maintenance, minute quiet stops, intensification, constant temperature, cooling four-stage.
Step 9: the tube core demoulding, tube core concrete demoulding intensity is not less than 20-30MPa.
Step 10: the outer surface of steel cylinder outer wall concrete layer twines silk, and steel cylinder is cooled to room temperature, reaches after twining an intensity and twines silk.
Step 11: employing roller penetrates method or spraying method is made epoxide coal bituminous protective layer.
Step 12: Checking of finished products, comprises that external pressure load, interior hydraulic pressure, the insulation of some spark detect, retainingf key anti-pulling intensity detection.
Preferably, in described step 6, tube core adopts centrifuging process to make or adopts vertical vibrating technique to make.
Preferably, in described step 6, centrifuging process is that centrifugal rotational speed divides low high speed, and centrifuging process system is adjusted according to different bores, should to tube wall liner, carry out smooth processing in time and get rid of more than inwall and starch after centrifugal end;
Preferably, in described step 6, note watering the concrete time lag to be no more than 30min during the moulding of vertical vibrating method, whole molding times of every tube core are no more than jelling time.
Preferably, in described step 8, between the quiet stopping time, be no less than 1 hour; Warming velocity is not more than 22 ℃/h constant temperature maximum temperature should not be higher than 60-85 ℃.
Preferably, in described step 10, twine a stress and should not surpass 0.75fpyk, wave range is no more than 10%; Before twining silk, spray cement paste.
Preferably, in described step 11, the epoxide coal bituminous protective layer compressive strength of protective layer is not less than 45MPa.
Beneficial effect of the present invention is:
1. the present invention utilizes PCCP pipe high strength, high permeability resistant and high leak tightness and PVC anticorrosion properties, and the two is organically combined, and develops a kind of brand-new tubing.This kind of tubing has solved the difficult situation that PCCP cannot be used in sewage treatment, widened the utilization field of PCCP pipe, increased the market space, because this tubing is outside keeping the execution conditions of PCCP pipe, solved well etch-proof problem, and the expense increasing is also few, therefore rising greatly
2. the present invention adopts modified PVC sheet material to avoid PCCP to manage the defects such as existing imporosity or breakage or not prison welding.
3. retainingf key anti-pulling intensity >=14N/mm of the present invention
Above mode of execution is only that the preferred embodiment of the present invention is described; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various distortion and improvement that the common engineers and technicians in related domain make technological scheme of the present invention, all should fall in the definite protection domain of claims of the present invention.
Claims (9)
1. the PCCP of a liner modified PVC manages; it is characterized in that: comprise shell portion; and the bellmouth steel loop and the socket steel ring that are arranged at shell portion two ends; shell portion is followed successively by PVC erosion protection sheild, tube core, steel cylinder, steel cylinder outer wall concrete layer and epoxide coal bituminous protective layer from inside to outside; wherein, between the outer surface of steel cylinder outer wall concrete layer and epoxide coal bituminous protective layer, be provided with reinforcement wire.
2. the PCCP of a kind of liner modified PVC according to claim 1 pipe, is characterized in that: described tube core is steel cylinder internal-wall concrete layer.
3. a method of making the PCCP pipe of liner modified PVC, is characterized in that: comprise the steps:
Step 1: prepare cement, sand, stone, water, admixture, active blending material and make concrete;
Step 2: make bellmouth steel loop, with cutting equipment by qualified steel plate in accordance with regulations width cut into band steel, bellmouth endless belt steel after customized cut-off is placed on connecting ring line belt, start plate bending rolls, be rolled into open annular, now should be on the external diameter of socket hoop with the thickness mark on steel, with electric wire hoist, trip ring is delivered to welding fixture, be contained on fixture, must make two joints in middle Shaft alignment state, and play movement will keep 5mm spacing, welded, after weld joint on inner side is soldered, " V " shape groove will be beaten in outside, and then welding;
Internally polish in outside respectively, and socket hoop weld is delivered to bellmouth roller pressing forming machine, by its rolling formation, the socket hoop of rolling formation delivered to socket joint choma Rise round machine, selects the suitable socket hoop round mould that rises, and being risen to justify draws socket hoop and be under lock and key;
Step 3: make socket steel ring, as step 1;
Step 4: make steel cylinder, steel cylinder adopts cold-reduced sheet or hot rolled plate to roll welding through spiral automatic welding or splicing and makes, and described steel cylinder head end welds with socket steel ring, described steel cylinder tail end and bellmouth steel ring welding;
Step 5: steel cylinder hydraulic test, whether check steel cylinder leaks, if having, repairs, and enters after the assay was approved step 6;
Step 6: around note concrete for making tube core;
Step 7: at steel cylinder internal mold laminating PVC erosion protection sheild;
Step 8: tube core maintenance, minute quiet stops, intensification, constant temperature, cooling four-stage;
Step 9: the tube core demoulding, tube core concrete demoulding intensity is not less than 20-30MPa;
Step 10: the outer surface of steel cylinder outer wall concrete layer twines silk, and steel cylinder is cooled to room temperature, reaches after twining an intensity and twines silk;
Step 11: employing roller penetrates method or spraying method is made epoxide coal bituminous protective layer;
Step 12: Checking of finished products, comprises that external pressure load, interior hydraulic pressure, the insulation of some spark detect, retainingf key anti-pulling intensity detection.
4. a kind of method of making the PCCP pipe of liner modified PVC according to claim 3, is characterized in that: in described step 6, tube core adopts centrifuging process to make or adopts vertical vibrating technique to make.
5. a kind of method of making the PCCP pipe of liner modified PVC according to claim 4, it is characterized in that: in described step 6, centrifuging process is that centrifugal rotational speed divides low high speed, centrifuging process system is adjusted according to different bores, should to tube wall liner, carry out smooth processing in time and get rid of more than inwall and starch after centrifugal end.
6. a kind of method of making the PCCP pipe of liner modified PVC according to claim 4, it is characterized in that: in described step 6, during the moulding of vertical vibrating method, noting watering the concrete time lag is no more than 30min, and whole molding times of every tube core are no more than jelling time.
7. a kind of method of making the PCCP pipe of liner modified PVC according to claim 3, is characterized in that: in described step 8, be no less than 1 hour between the quiet stopping time; Warming velocity is not more than 22 ℃/h constant temperature maximum temperature should not be higher than 60-85 ℃.
8. a kind of method of making the PCCP pipe of liner modified PVC according to claim 3, is characterized in that: in described step 10, twine a stress and should not surpass 0.75fpyk, wave range is no more than 10%; Before twining silk, spray cement paste.
9. a kind of method of making the PCCP pipe of liner modified PVC according to claim 3, is characterized in that: in described step 11, the epoxide coal bituminous protective layer compressive strength of protective layer is not less than 45MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410280040.6A CN104033668A (en) | 2014-06-20 | 2014-06-20 | PCCP (pre-stressed concrete cylinder pipe) with modified PVC (polyvinyl chloride) liner and PCCP manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410280040.6A CN104033668A (en) | 2014-06-20 | 2014-06-20 | PCCP (pre-stressed concrete cylinder pipe) with modified PVC (polyvinyl chloride) liner and PCCP manufacturing method |
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| CN104033668A true CN104033668A (en) | 2014-09-10 |
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| CN201410280040.6A Pending CN104033668A (en) | 2014-06-20 | 2014-06-20 | PCCP (pre-stressed concrete cylinder pipe) with modified PVC (polyvinyl chloride) liner and PCCP manufacturing method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832722A (en) * | 2015-04-20 | 2015-08-12 | 江苏宇星工贸有限公司 | Pre-stressed steel cylinder concrete conveying pipe used for ferrous nitrate |
| CN109808048A (en) * | 2019-03-22 | 2019-05-28 | 云南省楚雄恒基管道工业有限责任公司 | A kind of Prestressed concrete cylinder pipe preparation method |
| CN110159843A (en) * | 2019-06-27 | 2019-08-23 | 宁夏青龙管业股份有限公司 | A kind of steel cylinder type concrete pressure pipe and water pipeline |
| CN110792079A (en) * | 2019-09-30 | 2020-02-14 | 江苏东浦管桩有限公司 | Manufacturing process of ultrahigh-strength prestressed concrete pipe pile |
| CN113202985A (en) * | 2021-04-08 | 2021-08-03 | 中国长江三峡集团有限公司 | Double-steel-cylinder prestressed concrete pipe and production method thereof |
-
2014
- 2014-06-20 CN CN201410280040.6A patent/CN104033668A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832722A (en) * | 2015-04-20 | 2015-08-12 | 江苏宇星工贸有限公司 | Pre-stressed steel cylinder concrete conveying pipe used for ferrous nitrate |
| CN109808048A (en) * | 2019-03-22 | 2019-05-28 | 云南省楚雄恒基管道工业有限责任公司 | A kind of Prestressed concrete cylinder pipe preparation method |
| CN110159843A (en) * | 2019-06-27 | 2019-08-23 | 宁夏青龙管业股份有限公司 | A kind of steel cylinder type concrete pressure pipe and water pipeline |
| CN110792079A (en) * | 2019-09-30 | 2020-02-14 | 江苏东浦管桩有限公司 | Manufacturing process of ultrahigh-strength prestressed concrete pipe pile |
| CN110792079B (en) * | 2019-09-30 | 2021-05-25 | 江苏东浦管桩有限公司 | Manufacturing process of ultrahigh-strength prestressed concrete pipe pile |
| CN113202985A (en) * | 2021-04-08 | 2021-08-03 | 中国长江三峡集团有限公司 | Double-steel-cylinder prestressed concrete pipe and production method thereof |
| CN113202985B (en) * | 2021-04-08 | 2022-10-04 | 中国长江三峡集团有限公司 | Double-steel-cylinder prestressed concrete pipe and production method thereof |
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Application publication date: 20140910 |