CN102072360A - Pipe-jacking cathode protection embedding device and embedding method thereof - Google Patents
Pipe-jacking cathode protection embedding device and embedding method thereof Download PDFInfo
- Publication number
- CN102072360A CN102072360A CN200910199310XA CN200910199310A CN102072360A CN 102072360 A CN102072360 A CN 102072360A CN 200910199310X A CN200910199310X A CN 200910199310XA CN 200910199310 A CN200910199310 A CN 200910199310A CN 102072360 A CN102072360 A CN 102072360A
- Authority
- CN
- China
- Prior art keywords
- pipe
- cable
- stainless steel
- protected
- pipeline
- 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.)
- Granted
Links
Images
Landscapes
- Prevention Of Electric Corrosion (AREA)
Abstract
The invention discloses a pipe-jacking cathode protection embedding method. The method is characterized by comprising the following steps of: reserving a hole in a protected pipeline; and jacking an anode block or a cable sleeve out of the protected pipeline by adopting a vertical pipe jacking method in the protected pipeline. By using the method, the problem that a metal pipeline cathode protection device is difficult to lay and replace when crossing rivers, lakes and seas in pipe-jacking construction are solved. The method is developed aiming at that the anode block and a connecting cable cannot be embedded when performing pipe-jacking on the metal pipeline, has the characteristics that the structure is simple, the method is convenient to construct, and the cost is low. A pipe-jacking metal pipeline can be maintained better, and the service life thereof can be prolonged.
Description
Technical field:
The invention belongs to metallic conduit cathodic protection and jacking construction field, be specifically related to a kind of when jacking construction, the embedded device of metallic pipe cathode protector and method for embedding thereof.
Background technique:
Pipe jacking construction technique is a kind of trenchless technology that lays underground utility of better protection environment.Under the condition of its soil layer construction outside not disturbance or slight disturbance pipe,, tool pipe or development machine are passed soil layer along the line from active well enter received well by means of the thrust of jacking equipment such as main top oil pump.Therefore, the push pipe pipeline generally lays darker, below ground 5m～20m, and what have often passes through rivers,lakes and seas, and these pipelines are generally important, will rectificate working life, require these metallic conduits are carried out cathodic protection.
Cathodic protection is to make the metal surface become the negative electrode of electrochemical cell and reach a less technology of its corrosion rate.Mainly contain two kinds of patterns of sacrificial anode negative electrode and impressed current.The galvanic anode protection system makes the negative metal of current potential link to each other with protected pipeline by cable; and with placing in the middle of the soil; form corrosion cell; provide cathode current by soil to the protected pipeline of current potential calibration; and make its negative electrodeization; realize cathodic protection, the continuous oxidized consumption of anode material in this course, Here it is sacrificial anode.Impressed current cathodic protection system is that the negative pole of DC electrical source uses cable and protected pipeline to connect, and anodal and auxiliary anode is connected, and auxiliary anode contacts with its soil on every side, just forms a loop.DC electrical source makes it negative electrodeization and reaches the certain protection current potential to protected line transportation cathode current, thereby reaches the purpose of cathodic protection.
No matter be sacrificial anode or impressed current cathodic protection system, all need realize being connected of cable and protected pipeline, and in the sacrificial anode system, anode block also need regularly replace, so that lasting cathodic protection current to be provided.In the excavation pipe laying, cable generally welds and buries anode block underground at the outer wall of when fluting and pipeline, and it is comparatively convenient to construct.And during jacking construction, pipe laying is darker, by at face of land excavation, in pipeline outside conjunction cable difficulty comparatively often, invest very high, when passing through rivers and bay, or even impossible fully.
Summary of the invention:
The object of the present invention is to provide a kind of push pipe cathodic protection embedded device, in the time of can solving jacking construction, comprise when passing through rivers,lakes and seas, metallic pipe cathode protector lays and changes the problem of difficulty.
In order to realize this purpose; technological scheme of the present invention is: a kind of push pipe cathodic protection embedded device; it is characterized in that in protected pipeline preformed hole hole; install in the hole and reserve the stainless steel short tube; reserve in the short tube and wear cable stainless steel sleeve pipe again, this cable stainless steel sleeve pipe ejects to the pipeline outside vertical from protected pipe interior, and cable is arranged in the stainless steel sleeve pipe; one end of cable is connected with anode block, and the cable the other end is connected with protected inner-walls of duct.Reserve between short tube and the protected pipeline reserving hole and be threaded, between the cable stainless steel sleeve pipe also for being threaded.
Another object of the present invention is to provide a kind of push pipe cathodic protection method for embedding, in the time of can solving jacking construction, comprise when passing through rivers,lakes and seas, metallic pipe cathode protector lays and changes the problem of difficulty.
In order to realize this purpose, technological scheme of the present invention is: a kind of push pipe cathodic protection method for embedding, it is characterized in that at protected pipeline reserving hole, and take vertical pipe jacking method that anode block or cable sleeve are ejected protected pipeline at protected pipe interior.According to one embodiment of present invention, this method may further comprise the steps: A, protected pipeline reserving hole, be equipped with in the hole and reserve the stainless steel short tube, the pipe plug shutoff of the pipeline outside; After B, protected pipeline jacking are finished, cut and reserve the short tube pipe plug; C, slowly eject cable stainless steel sleeve pipe to the pipeline outside from protected pipe interior, the top is till bury absolute altitude underground near anode block, the sleeve pipe segmentation ejects, employing is threaded, when pushing up, reserve the short tube mouth and embed bowl-type rubber water-stop ring, form sealing with cable stainless steel sleeve pipe at stainless steel to last section; D, cable is worn to protected pipeline along the stainless steel sleeve pipe in the groove of ground excavation, and filled out the sealing of capel epoxy resins at the sleeve pipe two ends, stainless steel pipe plug waterproof on the last two end cap.According to another embodiment of the present invention, this method may further comprise the steps: A, protected pipeline reserving hole, because reserving hole need eject anode block, require size relatively large, and need carry out reinforcement around the metallic conduit reserving hole.Stainless steel is housed in the hole reserves short tube, the pipe plug shutoff of the pipeline outside; After B, protected pipeline jacking are finished, cut and reserve the short tube pipe plug; C, anode block bottom conjunction cable, cable penetrates in the cable stainless steel sleeve pipe, and anode block and cable stainless steel sleeve pipe fuse and are outwards ejected by protected pipeline, reserve the short tube mouth at stainless steel then and embed the rubber water-stop ring, form sealing; D, fill out the sealing of capel epoxy resins in the cable sleeve lower end, and need to adopt metal tube block stifled.
At the darker characteristics of push pipe pipe laying, calculated in advance before the metallic conduit jacking that cable connects or anode block lay the position, and on protected pipeline reserving hole.After jacking construction is finished, take vertical pipe jacking method that anode block or cable sleeve are ejected protected pipeline, and carry out sealing and anti-corrosion measure at protected pipe interior.When The present invention be directed to the metallic conduit push pipe, can't bury anode block underground and conjunction cable is developed, have simple structure, easy construction, characteristics with low cost.Can safeguard the push pipe metallic conduit better, prolong its working life.
Description of drawings
Fig. 1 is the structural representation of protected pipeline preformed hole
Fig. 2 is the schematic representation of one embodiment of the invention
Fig. 3 is the structural representation of bowl-type water proof rubber circle among Fig. 2
Fig. 4 lays detail drawing for protected pipeline inner cable
Fig. 5 is the schematic representation of another embodiment of the present invention
Embodiment
The drawings and specific embodiments according to the present invention below are described.
Fig. 1 is the structural representation of protected pipeline preformed hole.Before the jacking construction, according to the design of cathode protection device, reserving hole on push pipe metallic conduit 10; the size of hole is reserved according to the size of anode block or cable sleeve; be provided with in the hole and reserve short tube 1, and fill out 3 sealings of capel epoxy resins, short tube 1 is reserved with pipe plug 2 shutoff in the pipeline outside.Preformed hole as shown in Figure 1.For not hindering the FLUID TRANSPORTATION function of protected pipeline jacking and pipeline, it is all unsuitable excessive to reserve the interior outside of short tube 1 outstanding pipeline.If preformed hole is bigger, also need in hole Zhou Jinhang reinforcement.
Fig. 2 is a land push pipe buried depth scheme.In this scheme; reserve in the short tube and be provided with cable stainless steel sleeve pipe; this cable stainless steel sleeve pipe extend out to the anode block position from protected pipe interior to the pipeline outside; cable is arranged in the stainless steel sleeve pipe; one end of cable is connected with anode block; the cable the other end is positioned at protected pipeline, is connected with tube wall.Reserve between short tube and the protected pipeline reserving hole and be threaded, between the cable stainless steel sleeve pipe also for being threaded.After protected pipeline jacking is finished, cut the pipe plug 2 of reserving short tube 1, and slowly eject cable stainless steel sleeve pipe 4 from protected pipe interior to the pipeline outside, the top is till bury absolute altitude underground near anode block.The sleeve pipe segmentation ejects, and employing is threaded, and embeds bowl-type rubber water-stop ring 9 at stainless steel short tube mouth when pushing up to last section, forms sealing.Cable 5 is worn to protected pipeline along stainless steel sleeve pipe 4 in the groove of ground excavation, and filled out 7 sealings of capel epoxy resins at the sleeve pipe two ends, pipe plug 6 and 8 waterproof on the last two end cap.It is that A place and water-tight are the enlarged view at B place among Fig. 2 among Fig. 2 that Fig. 3 and Fig. 4 show cable laying.Cable 5 adopts welding 14 with protected pipeline, and covers epoxy coating 13, pastes with single-coated foam 12 on the coating again, and it is anticorrosion to apply slush coating 15 on adhesive tape 12 again.In sum, during push pipe, anode block can be embedded in below the more shallow face of land by excavation on land.Be connected with protected pipeline by cable, anode can be changed anode block again, and need not be excavated to protected pipeline after sacrificing.11 is anticorrosive coat.
When Fig. 5 passed through rivers or bay for push pipe, anode block was buried scheme underground.When push pipe passed through rivers,lakes and seas, ground can't be excavated and be buried anode block underground, and anode block 16 also needs to eject outward from protected pipe interior.Therefore, after protected pipeline jacking is finished, cut and reserve the short tube pipe plug; Anode block 16 bottom conjunction cables, cable 5 penetrate in the cable stainless steel sleeve pipe 4, and anode block 16 and cable stainless steel sleeve pipe 4 fuse and outwards ejected by protected pipeline 10, embed the rubber water-stop ring for 4 mouthfuls at cable stainless steel short tube then, form sealing; Because reserving hole requires size relatively large, need be to carrying out reinforcement 16 around the protected pipeline reserving hole in advance.And cable sleeve also need adopt the bigger pipe plug of intensity.The layout of anode block and cable as shown in Figure 5.Anode block and cable sleeve fuse and are outwards ejected by protected pipeline, eject and finish sealing and anticorrosive work after finishing again.Preformed hole and cable are connected with reference to Fig. 1 and Fig. 4 with protected pipeline.In this embodiment, the diameter of anode block 16 is generally at 80～150mm.
In sum, when The present invention be directed to the metallic conduit push pipe, can't bury anode block underground and conjunction cable is developed, have simple structure, easy construction, characteristics with low cost.Can safeguard the push pipe metallic conduit better, prolong its working life.
Claims (5)
1. push pipe cathodic protection embedded device; it is characterized in that in protected pipeline preformed hole hole; install in the hole and reserve the stainless steel short tube; reserve in the short tube and wear cable stainless steel sleeve pipe again; this cable stainless steel sleeve pipe ejects to the pipeline outside vertical from protected pipe interior; cable is arranged in the stainless steel sleeve pipe, and an end of cable is connected with anode block, and the cable the other end is connected with protected inner-walls of duct.
2. push pipe cathodic protection embedded device according to claim 1 is characterized in that reserving between short tube and the protected pipeline reserving hole and is threaded, between the cable stainless steel sleeve pipe also for being threaded.
3. a push pipe cathodic protection method for embedding is characterized in that at protected pipeline reserving hole, takes vertical pipe jacking method that anode block or cable sleeve are ejected protected pipeline at protected pipe interior.
4. push pipe cathodic protection method for embedding according to claim 3 is characterized in that this method may further comprise the steps: A, protected pipeline reserving hole, be equipped with in the hole and reserve the stainless steel short tube, the pipe plug shutoff of the pipeline outside; After B, protected pipeline jacking are finished, cut and reserve the short tube pipe plug; C, slowly eject cable stainless steel sleeve pipe to the pipeline outside from protected pipe interior, the top is till bury absolute altitude underground near anode block, the sleeve pipe segmentation ejects, employing is threaded, when pushing up, reserve the short tube mouth and embed bowl-type rubber water-stop ring, form sealing with cable stainless steel sleeve pipe at stainless steel to last section; D, cable is worn to protected pipeline along the stainless steel sleeve pipe in the groove of ground excavation, and filled out the sealing of capel epoxy resins at the sleeve pipe two ends, stainless steel pipe plug waterproof on the last two end cap.
5. push pipe cathodic protection method for embedding according to claim 3, it is characterized in that this method may further comprise the steps: A, protected pipeline reserving hole, because reserving hole need eject anode block, the requirement size is relatively large, need carry out reinforcement around the metallic conduit reserving hole, stainless steel is housed in the hole reserves short tube, the pipe plug shutoff of the pipeline outside; After B, protected pipeline jacking are finished, cut and reserve the short tube pipe plug; C, anode block bottom conjunction cable, cable penetrates in the cable stainless steel sleeve pipe, and anode block and cable stainless steel sleeve pipe fuse and are outwards ejected by protected pipeline, reserve the short tube mouth at stainless steel then and embed the rubber water-stop ring, form sealing; D, fill out the sealing of capel epoxy resins in the cable sleeve lower end, and need to adopt metal tube block stifled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910199310.XA CN102072360B (en) | 2009-11-24 | 2009-11-24 | Pipe-jacking cathode protection embedding device and embedding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910199310.XA CN102072360B (en) | 2009-11-24 | 2009-11-24 | Pipe-jacking cathode protection embedding device and embedding method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102072360A true CN102072360A (en) | 2011-05-25 |
| CN102072360B CN102072360B (en) | 2014-04-30 |
Family
ID=44031022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910199310.XA Active CN102072360B (en) | 2009-11-24 | 2009-11-24 | Pipe-jacking cathode protection embedding device and embedding method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102072360B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102586784A (en) * | 2012-03-14 | 2012-07-18 | 中国海洋石油总公司 | Method for assembling direct current cathode protection system outside platform |
| CN103060814A (en) * | 2011-10-24 | 2013-04-24 | 中国科学院金属研究所 | Construction method of feeding device for underground pipeline system |
| CN106907544A (en) * | 2017-02-28 | 2017-06-30 | 中国十七冶集团有限公司 | A kind of outer wall of basement discards the method for blocking of pre-buried pipeline |
| CN107482567A (en) * | 2017-09-22 | 2017-12-15 | 山东电力建设第工程公司 | A kind of buried cable fire-proof and water-proof sealing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54116731A (en) * | 1978-03-02 | 1979-09-11 | Toshiba Corp | Piping device |
| JPS63166983A (en) * | 1986-12-27 | 1988-07-11 | Nishihara Eisei Kogyosho:Kk | Method for preventing generation of reddish water |
| WO1999025899A1 (en) * | 1997-11-17 | 1999-05-27 | Aker Offshore Partner A.S | A corrosion-protected metal construction, e.g. in the form of a pipeline includable in a larger pipe system |
| JP2002282810A (en) * | 2001-03-27 | 2002-10-02 | Daiki Engineering Kk | Antifouling device |
| CN2707776Y (en) * | 2004-04-01 | 2005-07-06 | 大庆开发区东油新技术有限公司 | Anti-theft sacrificial anode used for above grade pipe line |
| CN101397673A (en) * | 2007-09-30 | 2009-04-01 | 濮阳市信宇石油机械化工有限公司 | Sacrificial anode and protective cathode-casing tube anti-corrosive apparatus |
| CN101892486A (en) * | 2009-10-26 | 2010-11-24 | 上海青草沙投资建设发展有限公司 | Construction method of feeding device for large-diameter pipeline in trenchless construction |
-
2009
- 2009-11-24 CN CN200910199310.XA patent/CN102072360B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54116731A (en) * | 1978-03-02 | 1979-09-11 | Toshiba Corp | Piping device |
| JPS63166983A (en) * | 1986-12-27 | 1988-07-11 | Nishihara Eisei Kogyosho:Kk | Method for preventing generation of reddish water |
| WO1999025899A1 (en) * | 1997-11-17 | 1999-05-27 | Aker Offshore Partner A.S | A corrosion-protected metal construction, e.g. in the form of a pipeline includable in a larger pipe system |
| JP2002282810A (en) * | 2001-03-27 | 2002-10-02 | Daiki Engineering Kk | Antifouling device |
| CN2707776Y (en) * | 2004-04-01 | 2005-07-06 | 大庆开发区东油新技术有限公司 | Anti-theft sacrificial anode used for above grade pipe line |
| CN101397673A (en) * | 2007-09-30 | 2009-04-01 | 濮阳市信宇石油机械化工有限公司 | Sacrificial anode and protective cathode-casing tube anti-corrosive apparatus |
| CN101892486A (en) * | 2009-10-26 | 2010-11-24 | 上海青草沙投资建设发展有限公司 | Construction method of feeding device for large-diameter pipeline in trenchless construction |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103060814A (en) * | 2011-10-24 | 2013-04-24 | 中国科学院金属研究所 | Construction method of feeding device for underground pipeline system |
| CN102586784A (en) * | 2012-03-14 | 2012-07-18 | 中国海洋石油总公司 | Method for assembling direct current cathode protection system outside platform |
| CN102586784B (en) * | 2012-03-14 | 2013-08-14 | 中国海洋石油总公司 | Method for assembling direct current cathode protection system outside platform |
| CN106907544A (en) * | 2017-02-28 | 2017-06-30 | 中国十七冶集团有限公司 | A kind of outer wall of basement discards the method for blocking of pre-buried pipeline |
| CN106907544B (en) * | 2017-02-28 | 2018-08-14 | 中国十七冶集团有限公司 | A kind of outer wall of basement discards the method for blocking of pre-buried pipeline |
| CN107482567A (en) * | 2017-09-22 | 2017-12-15 | 山东电力建设第工程公司 | A kind of buried cable fire-proof and water-proof sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102072360B (en) | 2014-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202030825U (en) | Deep well anode/cathode protection device for protecting embedded steel pipeline | |
| CN202936487U (en) | Sacrificial anode used for cathodic protection of underground pipeline system | |
| CN102072360B (en) | Pipe-jacking cathode protection embedding device and embedding method thereof | |
| CN102586785A (en) | System and method for cathodic protection of a subsea well-assembly | |
| CN101696758B (en) | Corrosion control method of trenchless construction large diameter pipeline | |
| CN116624157A (en) | Underwater butt joint reinforcing method in high-water-pressure strong-permeability stratum | |
| CN101368648B (en) | Underwater pipe device and method thereof | |
| CN2918446Y (en) | Oil well and pipeline corrosion protection cathodic protection apparatus | |
| US20170328828A1 (en) | Electric anticorrosive potential measurement electrode unit | |
| CN103591377A (en) | Method for constructing directly-buried heat-preservation pipeline passing by marshland section | |
| CN203947161U (en) | Cathode protection structure of buried pipeline with heat-insulating layer | |
| CN109868481A (en) | The means of defence that oil-gas pipeline is interfered by HVDC transmission line earthing pole location | |
| CN216838192U (en) | Cathode protection system for crossing river section pipeline | |
| CN217282134U (en) | Structure for improving current-carrying capacity of landing section submarine cable by utilizing tidal water for cooling | |
| CN103014722B (en) | Device for installing impressed current cathodic protection system on offshore platform | |
| US11136266B2 (en) | Thixotropic non-cementitious thermal grout and HDD or trough product line methods of application | |
| CN109457256B (en) | Carpet type sacrificial anode device for submarine pipeline cathode protection repair | |
| CN203096179U (en) | Mounting device of impressed current cathodic protection system for marine platform | |
| CN215856341U (en) | Flexible anode structure | |
| CN201071708Y (en) | Device for using abandoned well as ground bed to protect underground pipes and oil wells | |
| CN216808964U (en) | Electric anti-corrosion protection system for underground steel structure of power plant | |
| CN209227063U (en) | Vertical permanent cathodic protection anode device | |
| CN202580334U (en) | High-density polyethylene (HDPE) trenchless pipe | |
| CN212967190U (en) | Submarine dedicated cable | |
| KR102114583B1 (en) | laying method for a drain pipe in a high-level stream area |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |