CN103994285B - Pipe of concrete - Google Patents
Pipe of concrete Download PDFInfo
- Publication number
- CN103994285B CN103994285B CN201410252171.3A CN201410252171A CN103994285B CN 103994285 B CN103994285 B CN 103994285B CN 201410252171 A CN201410252171 A CN 201410252171A CN 103994285 B CN103994285 B CN 103994285B
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- Prior art keywords
- steel
- pipe
- conduction
- concrete
- steel cylinder
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Classifications
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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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- 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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The present invention relates to pipeline transportation field, in particular to pipe of concrete. This pipe of concrete, comprising: steel cylinder and cathodic protection system; On the outer surface of steel cylinder, along the direction of its extension, be provided with conduction steel band; The outer surface of steel cylinder is also provided with reinforcing bar, and reinforcing bar is wrapped on the outer surface of steel cylinder, and conduction steel band is between steel cylinder and reinforcing bar; Conduction steel band and cathodic protection system electrically connect; Steel cylinder inner surface is provided with inner protective layer; On the outer surface of steel cylinder, be provided with external protection, and will conduct electricity steel band and reinforcing bar and cover. Pipe of concrete provided by the invention, it is provided with conduction steel band at steel cylinder outer surface, and conduction steel band electrically connects with cathodic protection system again, makes steel cylinder and cathodic protection system form loop. Underground when carrying liquid when the pipe of concrete in the present invention is embedded in, make steel cylinder in negative electrode because pipe of concrete and cathodic protection system electrically connect, thereby the corrosion of blocking-up steel cylinder extend service life of pipe of concrete.
Description
Technical field
The present invention relates to pipeline transportation field, in particular to pipe of concrete.
Background technology
Pipe of concrete is the pipe of making of concrete or armored concrete, for delivery of water,The fluids such as oil, gas.
Pipe of concrete in correlation technique be divided into plain concrete pipe, ordinary reinforced concrete pipe,From stress concrete reinforced pipe and Prestressed concrete cylinder pipe. Wherein be most widely usedFor Prestressed concrete cylinder pipe road, it comprises containing the concrete tube core of steel cylinder, high-strength pre-answeringPower (cold-)drawn (steel)wire, mortar cover. Steel cylinder adopts the sheet metal that 1.5mm is thick to make, steel cylinderBe embedded in tube core concrete, the outer surface of tube core is provided with the high-strength prestressed cold-drawn steel of many ringsSilk, for strengthening the bearing capacity of tube core, is provided with mortar cover at tube core outer surface.
But, due to using when Prestressed concrete cylinder pipe, need to be imbedded underground,So, the corrosion resistance of mortar cover and heavily stressed (cold-)drawn (steel)wire a little less than, easily makeSteel cylinder is corroded, and causes reduce the service life of Prestressed concrete cylinder pipe.
Summary of the invention
The object of the present invention is to provide pipe of concrete, to solve the above problems.
Pipe of concrete is provided in an embodiment of the present invention, has comprised: steel cylinder and cathodic protectionSystem; On the outer surface of steel cylinder, along the direction of its extension, be provided with conduction steel band; Steel cylinderOuter surface be also provided with reinforcing bar, reinforcing bar is wrapped on the outer surface of steel cylinder, and conduction steel bandBetween steel cylinder and described reinforcing bar; Conduction steel band is electrically connected with cathodic protection system; Steel cylinderInner surface is provided with inner protective layer; On the outer surface of steel cylinder, be provided with external protection, and will leadElectricity steel band and reinforcing bar cover.
Further, described steel cylinder comprises steel pipe, bellmouth and socket; One end of steel pipe arrangesHave bellmouth, the other end is provided with the socket matching with bellmouth; Conduction steel band is arranged on steel pipeOn; Reinforcing bar is wrapped on the outer surface of bellmouth and the outer surface of steel pipe, and conduction steel band is positioned atBetween steel pipe and reinforcing bar; Inner protective layer is arranged on the inner surface of steel pipe and the inner surface of socket;External protection is arranged on the outer surface of steel pipe and the outer surface of bellmouth, and by reinforcing bar and conductionSteel band covers.
Further, conduction steel band is two; Article two, conduction steel band is symmetricly set on steel pipe;Article two, conduction steel band electrically connects with cathodic protection system respectively.
Further, pipe of concrete also comprises four conduction jumpers; Equal on bellmouth and socketBe symmetrically arranged with two conduction jumpers; The two ends of each conduction steel band respectively with bellmouth onOne end of a conduction jumper on one end of a conduction jumper and socket electrically connects,The other end of each conduction jumper is all positioned at the side of external protection away from steel cylinder, and with the moonUtmost point protection system electrically connects.
Further, the outer surface of socket, the direction of extending along its side face, is provided with groove;In groove, be provided with two cushion rubbers, two cushion rubbers are for sealing the junction of bellmouth and socket.
Further, groove is at least two; At least two grooves are arranged on the appearance of socketFace, and adjacent notches is arranged in parallel; In each groove, be provided with two cushion rubbers.
Further, inner protective layer is cement mortar protective course.
Further, external protection is pea gravel concreten protective layer.
The pipe of concrete that the embodiment of the present invention provides, it is provided with and leads at steel cylinder outer surfaceElectricity steel band, conduction steel band electrically connects with cathodic protection system again, and steel cylinder and negative electrode are protectedProtecting system forms loop. When the pipe of concrete in the present invention is embedded in to underground conveyingWhen liquid, due to pipe of concrete and cathodic protection system electrically connect make steel cylinder inNegative electrode, thus the corrosion of blocking-up steel cylinder has extended service life of pipe of concrete.
Brief description of the drawings
Fig. 1 shows the cross-sectional view of the plane of structure of pipe of concrete provided by the invention;
Fig. 2 shows the section structure for amplifying signal of the vertical face of pipe of concrete provided by the inventionFigure;
Fig. 3 shows the structure for amplifying signal of the socket of pipe of concrete provided by the inventionFigure;
Fig. 4 shows the structure for amplifying signal of the interface of pipe of concrete provided by the inventionFigure.
Detailed description of the invention
Also by reference to the accompanying drawings the present invention is done further in detail below by specific embodimentDescribe.
The present embodiment provides pipe of concrete, as depicted in figs. 1 and 2, comprising: steel cylinder andCathodic protection system; On the outer surface of steel cylinder, along the direction of its extension, be provided with conductive steelBe with 108; The outer surface of steel cylinder is also provided with reinforcing bar 106, reinforcing bar 106 be wrapped in steel cylinder outsideOn surface, and conduction steel band 108 is between steel cylinder and described reinforcing bar 106; Conduction steel band108 electrically connect with cathodic protection system; Steel cylinder inner surface is provided with inner protective layer 104; Steel cylinderOuter surface on be provided with external protection 105, and conduction steel band 108 and reinforcing bar 106 are coveredLid. Pipe of concrete is embedded in underground, the steel band 108 that simultaneously will conduct electricity is protected by electric wire and negative electrodeProtecting system electrically connects, and makes steel cylinder and cathodic protection system form loop. When by the present inventionPipe of concrete be embedded in underground when carrying liquid, because pipe of concrete is with cloudyUtmost point protection system electrically connects and makes steel cylinder in negative electrode, thereby the corrosion of blocking-up steel cylinder is prolongedGrow the service life of pipe of concrete.
In addition, above-mentioned cathodic protection system comprises pipeline external anti-corrosion layer, test pile, permanent electricityPosition instrument two (one of a job is for subsequent use), anode ground beds (impressed current anode), long-acting referenceElectrode, insulating flange (joint) etc. Corrosion is an electrochemical process, and cathodic protection isThe electrochemical process that stops corrosion by external resistor, is a kind of additional electrical system, logicalCross in the electric current that provides very little and the electric current of corrosion cell generation. Cathodic protection systemThereby the corrosion cell that removes part makes etching-stop. Cathodic protection system can be processedGeneral corrosion condition.
Described steel cylinder comprises steel pipe 101, bellmouth 102 and socket 103; One of steel pipe 101End is provided with bellmouth 102, and the other end is provided with the socket 103 matching with bellmouth 102; LeadElectricity steel band 108 is arranged on steel pipe 101; Reinforcing bar 106 is wrapped in the outer surface of bellmouth 102On the outer surface of steel pipe 101, and conduction steel band 108 is positioned at steel pipe 101 and reinforcing bar 106Between; Inner protective layer 104 is arranged on the inner surface of steel pipe 101 and the inner surface of socket 103On; External protection 105 is arranged on the outer surface of steel pipe 101 and the outer surface of bellmouth 102,And reinforcing bar 106 and conduction steel band 108 are covered. Two ends at steel pipe 101 are installed and are held respectivelyMouthfuls 102 and socket 103, by bellmouth 102 and socket 103 respectively with adjacent concretePipe connects, and not only can improve the operating efficiency that pipe of concrete is installed, and reduces installation cost,But also saving labour cost. In addition, because steel pipe 101 has higher anti-interior pressure property,And at the outer winding reinforcing bar 106 of steel pipe 101, make steel pipe 101 there is higher critical external compressive resistance,Thereby further improve the anti-pressure ability of pipe of concrete.
Conduction steel band 108 is two; Article two, conduction steel band 108 symmetries be arranged on steel pipe 101On; Article two, conduction steel band 108 electrically connects with cathodic protection system respectively. Due to pipe of concreteDiameter very large, so on steel pipe 101, be symmetrical arranged two days conduction steel band 108, fromAnd the resistance to corrosion of raising cathodic protection system.
As shown in Figure 3 and Figure 4, pipe of concrete also comprises four conduction jumpers 109; HoldOn mouth 102 and socket 103, be all symmetrically arranged with two conduction jumpers 109; Each conductionThe two ends of steel band 108 respectively with bellmouth 102 on one conduction jumper 109 one end andOne end of a conduction jumper 109 on socket 103 electrically connects, each conduction jumper109 the other end is all positioned at the side of external protection 105 away from steel cylinder, and and cathodic protectionSystem electrically connects. Because steel pipe 101 is outside equipped with external protection 105, and will conduct electricity steel band108 be embedded in reinforcing bar 106 under, external protection 105 covers steel current conducting plate, forBe convenient to steel current conducting plate and cathodic protection system to electrically connect, at bellmouth 102 and socket 103On be all symmetrically arranged with two conduction jumpers 109, and two conduction jumpers 109 are respectivelyThe two ends of a steel current conducting plate corresponding with them electrically connect, by conduction jumper 109Steel current conducting plate and cathodic protection system are electrically connected, thus the installation effectiveness of raising pipe of concrete.In addition, because one end of conduction jumper 109 is positioned at outside pipe of concrete, and then by electricityLine and cathodic protection system electrically connect, so, in the time that electric wire is aging, be convenient to change, thereby prolongGrow the service life of pipe of concrete.
The outer surface of socket 103, the direction of extending along its side face, is provided with groove 107;In groove 107, be provided with two cushion rubbers, two cushion rubbers are for the company with socket 103 by bellmouth 102Connect place's sealing. In the time that some pipe of concretes link together by bellmouth 102 and socket 103,In order to make the sealing property of some pipe of concretes that link together better, thereby ensure by defeatedThe loss of the liquid sending, thus reduce the loss. Outer surface after inserting, extension side face extendsDirection, be provided with groove 107, in groove 107, be provided with two cushion rubbers. When one mixedWhen the socket 103 of solidifying native pipe is inserted into the bellmouth 102 of next pipe of concrete, due to two cushion rubbersThere is elasticity, thereby by the gap sealing between the socket cooperatively interacting 103 and bellmouth 102,Thereby improve the sealing property between two adjacent pipe of concretes, be transferred thereby reduceThe loss of liquid, improves transfer efficiency.
Groove 107 is at least two; At least two grooves 107 be arranged on socket 103 outsideSurface, and adjacent notches 107 is arranged in parallel; In each groove 107, be provided with twoCushion rubber. In order further to improve the sealing property of the pipe of concrete linking together, socketGroove 107 on 103 is at least two, and adjacent groove 107 is arranged in parallel, everyIn individual groove 107, be provided with two cushion rubbers. When the socket 103 of a pipe of concrete is inserted intoWhen the bellmouth 102 of the pipe of concrete being adjacent, the two cushion rubbers in each groove 107 all byPhase interworking and socket 103 and bellmouth 102 between gap sealing. In other words, Ruo GanshuanCushion rubber is dentation, and each pair of cushion rubber be circular arc near the one side of bellmouth, thereby makes two glueBetween circle and adjacent two pairs of cushion rubbers, air cooperatively interacts, thereby has further improved phaseThe sealing property of two adjacent pipe of concretes, has further improved transfer efficiency.
Inner protective layer 104 is cement mortar protective course. External protection 105 is pea gravel concretenProtective layer. The corrosion resistance that can further improve pipe of concrete strengthens coagulation simultaneouslyThe compressive property of soil pipe, thereby the service life of prolongation pipe of concrete.
Pipe of concrete provided by the invention, is a kind of novel pressure tubing, and two ends are welded with chiVery little accurately, the steel bell 102 of automatic centering, the welded still pipe 101 of socket 103, therebyIt is more convenient to make to install, thereby has improved installation effectiveness, has saved labour, and then has fallenLow use cost; Adopt centrifuging process sidelining cement bonded sand in light pipe and socket 103 ringsSlurry or concrete; Adopt continuity reinforcement(bar) 106 to be closely wrapped in a spiral manner outside steel pipe 101Side also adopts welding method reinforcing bar 106 to be firmly welded on the bellmouth 102 at steel pipe 101 two ends,And then improve the bearing capacity of pipe of concrete; Be wound around the front elder generation of reinforcing bar 106 reinforcing bar 106 timesPre-buried conduction steel band 108, and at its two ends welding conduction jumper 109, adopt roller to penetrate or itIts method is made the sand of one deck densification on steel pipe 101, bellmouth 102 and reinforcing bar 106 surfacesStarch or pea gravel concreten protective layer, and then improved the corrosion resistance of pipe of concrete. In addition,The design of socket 103 and socket 103 can ensure bellmouth 102 and slotting under various service conditionsThe sealing of mouth 103, thus transfer efficiency improved.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention,For a person skilled in the art, the present invention can have various modifications and variations. AllWithin the spirit and principles in the present invention, any amendment of doing, be equal to replacement, improvement etc.,Within all should being included in protection scope of the present invention.
Claims (2)
1. pipe of concrete, is characterized in that, comprising: steel cylinder and cathodic protection system;
On the outer surface of described steel cylinder, along the direction of its extension, be provided with conduction steel band;
The outer surface of described steel cylinder is also provided with reinforcing bar, and described reinforcing bar is wrapped in described steel cylinderOn outer surface, and described conduction steel band is between described steel cylinder and described reinforcing bar; Described leadingElectricity steel band and described cathodic protection system electrically connect;
Described steel cylinder comprises steel pipe, bellmouth and socket; Described steel cylinder inner surface is provided with interior guarantorSheath; On the outer surface of described steel cylinder, be provided with external protection, and by described conduction steel band andDescribed reinforcing bar covers;
One end of described steel pipe is provided with described bellmouth, and the other end is provided with and described bellmouth phaseThe described socket coordinating; Described conduction steel band is arranged on described steel pipe; Described reinforcing bar is wound aroundOn the outer surface of described bellmouth and the outer surface of described steel pipe, and described conduction steel band is positioned atBetween described steel pipe and described reinforcing bar;
Described inner protective layer is arranged on the inner surface of described steel pipe and the inner surface of described socketOn; Described external protection is arranged on the outer surface of described steel pipe and the outer surface of described bellmouth,And described reinforcing bar and described conduction steel band are covered;
Described conduction steel band is two; Article two, described conduction steel band symmetry be arranged on described steelGuan Shang; Article two, described conduction steel band electrically connects with described cathodic protection system respectively;
Also comprise four conduction jumpers; On described bellmouth and described socket, be all symmetrically arranged withTwo described conduction jumpers; The two ends of each described conduction steel band respectively with described bellmouth onOne end and the described socket of a described conduction jumper on a described conduction jumperOne end electrically connect, the other end of each described conduction jumper is all positioned at described external protectionAway from a side of described steel cylinder, and electrically connect with described cathodic protection system;
The outer surface of described socket, the direction of extending along its side face, is provided with groove; DescribedIn groove, be provided with two cushion rubbers, described pair of cushion rubber is used for the company of described bellmouth and described socketConnect place's sealing;
Described groove is at least two; At least two described grooves be arranged on described socket outsideSurface, and adjacent described groove is arranged in parallel; In each described groove, be provided with instituteState two cushion rubbers.
2. pipe of concrete according to claim 1, is characterized in that, described interior guarantorSheath is cement mortar protective course.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410252171.3A CN103994285B (en) | 2014-06-09 | 2014-06-09 | Pipe of concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410252171.3A CN103994285B (en) | 2014-06-09 | 2014-06-09 | Pipe of concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103994285A CN103994285A (en) | 2014-08-20 |
| CN103994285B true CN103994285B (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410252171.3A Active CN103994285B (en) | 2014-06-09 | 2014-06-09 | Pipe of concrete |
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| Country | Link |
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| CN (1) | CN103994285B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106088476A (en) * | 2016-07-29 | 2016-11-09 | 华南理工大学 | The ultra-high performance concrete cylinder permanent template of self-locking connection and construction method thereof |
| CN107779875B (en) * | 2017-11-24 | 2019-06-04 | 中国船舶重工集团公司第七一九研究所 | External sacrificial anode device |
| CN108914981A (en) * | 2018-08-16 | 2018-11-30 | 兰州大学 | A kind of foundation pile corrosion protection system based on electric field action |
| CN108953781A (en) * | 2018-10-12 | 2018-12-07 | 宁夏青龙管业股份有限公司 | A kind of reinforcing bar winding steel cylinder pressure pipe and aqueduct |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4990231A (en) * | 1981-06-12 | 1991-02-05 | Raychem Corporation | Corrosion protection system |
| CN101498388A (en) * | 2008-01-28 | 2009-08-05 | 天津万联管道工程有限公司 | Inner lining concrete prestress steel pipe |
| CN202629366U (en) * | 2012-06-29 | 2012-12-26 | 邢士波 | Lining type prestressed concrete cylinder pipe with fiber anti-crack mortar protective layer on surface |
| CN202629365U (en) * | 2012-06-29 | 2012-12-26 | 邢士波 | Bell and spigot hot-dip galvanized lined prestressed steel cylinder concrete pipe |
| CN203868538U (en) * | 2014-06-09 | 2014-10-08 | 宁夏青龙管业股份有限公司 | Concrete pipe |
-
2014
- 2014-06-09 CN CN201410252171.3A patent/CN103994285B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4990231A (en) * | 1981-06-12 | 1991-02-05 | Raychem Corporation | Corrosion protection system |
| CN101498388A (en) * | 2008-01-28 | 2009-08-05 | 天津万联管道工程有限公司 | Inner lining concrete prestress steel pipe |
| CN202629366U (en) * | 2012-06-29 | 2012-12-26 | 邢士波 | Lining type prestressed concrete cylinder pipe with fiber anti-crack mortar protective layer on surface |
| CN202629365U (en) * | 2012-06-29 | 2012-12-26 | 邢士波 | Bell and spigot hot-dip galvanized lined prestressed steel cylinder concrete pipe |
| CN203868538U (en) * | 2014-06-09 | 2014-10-08 | 宁夏青龙管业股份有限公司 | Concrete pipe |
Non-Patent Citations (1)
| Title |
|---|
| 防腐技术在南水北调PCCP 工程中的应用;李向东;《山西水利科技》;20090831;第18页第1栏第3段、第19页第1栏第4段至第20页第2栏第1段，图2、5 * |
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| Publication number | Publication date |
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| CN103994285A (en) | 2014-08-20 |
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Address after: 751600 Hexi, Qingtongxia City, Wuzhong City, Ningxia Hui Autonomous Region Patentee after: Ningxia Qinglong Pipe Group Co.,Ltd. Address before: 751600 Hexi, Qingtongxia City, Ningxia Hui Autonomous Region Patentee before: NINGXIA QINGLONG PIPES INDUSTRY Co.,Ltd. |
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