CN107904602B - A kind of device preventing stray current corrosion underground utilities - Google Patents
A kind of device preventing stray current corrosion underground utilities Download PDFInfo
- Publication number
- CN107904602B CN107904602B CN201710954799.1A CN201710954799A CN107904602B CN 107904602 B CN107904602 B CN 107904602B CN 201710954799 A CN201710954799 A CN 201710954799A CN 107904602 B CN107904602 B CN 107904602B
- Authority
- CN
- China
- Prior art keywords
- water conservancy
- conservancy diversion
- underground utilities
- diversion pole
- pole
- 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 - Fee Related
Links
- 230000007797 corrosion Effects 0.000 title claims abstract description 30
- 238000005260 corrosion Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 67
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 13
- 239000010962 carbon steel Substances 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- MIOQWPPQVGUZFD-UHFFFAOYSA-N magnesium yttrium Chemical compound [Mg].[Y] MIOQWPPQVGUZFD-UHFFFAOYSA-N 0.000 claims description 5
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 3
- 229910000746 Structural steel Inorganic materials 0.000 claims description 3
- 239000008397 galvanized steel Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 229910000365 copper sulfate Inorganic materials 0.000 description 5
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/16—Electrodes characterised by the combination of the structure and the material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/20—Constructional parts or assemblies of the anodic or cathodic protection apparatus
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F2213/00—Aspects of inhibiting corrosion of metals by anodic or cathodic protection
- C23F2213/30—Anodic or cathodic protection specially adapted for a specific object
- C23F2213/32—Pipes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The invention discloses a kind of devices for preventing stray current corrosion underground utilities, including water conservancy diversion pole, and water conservancy diversion pole is arranged in shading ring, and the both ends of water conservancy diversion pole are welded on shading ring, and shading ring is connected with sacrificial anode by conducting wire.It is discharged into the electric current of underground using the method balance of bypass electrode, stray electrical current is made preferentially to flow through water conservancy diversion pole, without flowing into underground utilities, effectively prevents corrosion of the stray electrical current to underground utilities.
Description
Technical field
The invention belongs to pipeline protection equipment technical fields, and in particular to a kind of stray current corrosion underground utilities of preventing
Device.
Background technique
In most cases, the engineering in general such as electrical equipment, electric railway, high-speed rail, high voltage power transmission, direct current transportation all will
The earth is used as earthing pole, i.e., greatly is drainage pole, and this electric current for flowing into the earth is commonly referred to as stray electrical current.Due to electrical equipment
More and more, the grade of high voltage power transmission is also higher and higher, and the stray electrical current for being discharged into underground will be more and more, flows into the electricity of underground
Stream and voltage class is higher, frequency and direction change are larger, this is especially increasingly longer, pressure is higher and higher to subsurface equipment
Underground oil gas pipeline will cause great harm, prevent stray electrical current to underground utilities corrosion have become petroleum gas row
The problem and key of industry.
For theoretically, the electric current of underground is inputted if direct current, subsurface equipment works as electricity then by anode accelerated corrosion
When the inflow terminal potential of stream is higher than outflow end, i.e., the inflow end of electric current is anode, then by anodic attack, this can make underground utilities
It is thinning and perforated；The outflow end of electric current is cathode, then generates gas-evolving electrodes, since gas-evolving electrodes make pipeline become fragile, once by
To gravity above pipeline effect (such as be embedded in underground oil, gas pipeline soil gravity) line break will be made.If one
The underground utilities in a city are corroded, and gently then cause oil and gas leakage, heavy then cause pipe explosion, and the harm generated is can not to estimate
Amount.Therefore, harm of the stray electrical current to underground oil, feed channel is effectively reduced, this has the protection of underground utilities great
Meaning.
Summary of the invention
The object of the present invention is to provide a kind of devices for preventing stray current corrosion underground utilities, using the side of bypass electrode
Method balances the electric current for being discharged into underground, so that stray electrical current is preferentially flowed through side circuit, does not enter in underground piping, can prevent stray electrical
Flow the corrosion to underground utilities.
The technical scheme adopted by the invention is that a kind of device for preventing stray current corrosion underground utilities, including water conservancy diversion
Pole, water conservancy diversion pole are set in shading ring, and the both ends of water conservancy diversion pole are welded on shading ring, and shading ring is connected with sacrifice by conducting wire
Anode.
The features of the present invention also characterized in that
Shading ring is carbon steel ring, zinc-plated steel loop, band steel ring, triangle iron hoop, any one in round steel ring.
Water conservancy diversion extremely carbon steel water conservancy diversion pole, galvanized steel water conservancy diversion pole, band steel water conservancy diversion pole, angle iron water conservancy diversion pole, round steel water conservancy diversion extremely in
Any one.
The cross-sectional area of shading ring is 5cm2~10cm2。
The cross-sectional area of water conservancy diversion pole is 5cm2~10cm2。
Sacrificial anode is magnesium-yttrium sacrificial anode.
The beneficial effects of the present invention are:
1. utilizing anode loss protection shading ring and water conservancy diversion pole, it is set to be not easily susceptible to the corrosion of stray electrical current, while also dropping
Low shading ring and water conservancy diversion extremely on current potential；
2. having added shading ring at water conservancy diversion pole both ends, the stray electrical current that shading ring can be such that side experiences is diverted to two sides,
The protected pipeline in center is formed and is electromagnetically shielded；The sectional area of water conservancy diversion pole can also be increased；Make fixed water conservancy diversion pole not with protected
The pipeline of shield contacts.
Detailed description of the invention
Fig. 1 is a kind of main view for the device for preventing stray current corrosion underground utilities of the present invention；
Fig. 2 is a kind of left view for the device for preventing stray current corrosion underground utilities of the present invention.
In figure, 1. shading rings, 2. water conservancy diversion poles, 3. sacrificial anodes.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of apparatus structure for preventing stray current corrosion underground utilities of the present invention, as shown in Figures 1 and 2, including water conservancy diversion
Pole 2, water conservancy diversion pole 2 are set in shading ring 1, and the both ends of water conservancy diversion pole 2 are welded on shading ring 1, and shading ring 1 is connected by conducting wire
There is sacrificial anode 3.
Wherein, shading ring 1 is carbon steel ring, zinc-plated steel loop, band steel ring, triangle iron hoop, any one in round steel ring；Water conservancy diversion
Pole 2 be carbon steel water conservancy diversion pole, galvanized steel water conservancy diversion pole, band steel water conservancy diversion pole, angle iron water conservancy diversion pole, round steel water conservancy diversion extremely in any one.
The cross-sectional area of shading ring 1 is 5cm2~10cm2。
The cross-sectional area of water conservancy diversion pole 2 is 5cm2~10cm2。
Sacrificial anode 3 is magnesium-yttrium sacrificial anode.
A kind of application method for the device for preventing stray current corrosion underground utilities of the present invention is:
Shading ring 1 is mounted on outside underground utilities, underground utilities is made to be in the center of shading ring 1, the internal diameter of shading ring 1 is big
In the outer diameter 600mm-800mm of underground utilities, water conservancy diversion pole 2 is kept to be parallel to underground utilities, and both ends are welded on shading ring 1
On.
Outside underground utilities, a shading ring 1 is set between every 6m-10m, if the distance of underground utilities is longer, shielding
Ring 1 is settable multiple.
A kind of device for preventing stray current corrosion underground utilities of the present invention, concrete operating principle is:
When stray electrical current flows into underground utilities, stray electrical current is intercepted by water conservancy diversion pole 2, and electric current will be flowed through along water conservancy diversion pole 2,
To prevent stray current corrosion underground utilities.
Water conservancy diversion pole 2 is fixed on underground utilities two sides by shading ring 1, prevents water conservancy diversion pole 2 from connecting with underground utilities, water conservancy diversion pole 2
Two sides be connected to by shading ring, when stray electrical current is experienced in 2 side of water conservancy diversion pole, stray electrical current can be passed to and is led by shading ring 1
Stream 2 other side of pole, in addition, the current potential of 2 two sides of water conservancy diversion pole is identical, is formed to enhance diversion effect around underground utilities
Equipotential field, equipotential field have electromagnetic shielding action, are in underground utilities in electromagnetic shielding field.
Magnesium yttrium sacrificial anode 3 can prevent shading ring 1 and water conservancy diversion pole 2 by the stray current corrosion in soil, and magnesium yttrium sacrifices sun
Pole 3 reduces the current potential of water conservancy diversion pole 2, its current potential is made to flow into underground when DC stray current flows into the earth lower than underground utilities
Current level be higher than the current potential of the earth, the electric current of high potential can preferentially be flowed into the lower water conservancy diversion pole 2 of current potential, may not flow into
In underground utilities, to prevent stray current corrosion underground utilities.
When oil transportation gas underground utilities are below by electric railway, high-voltage line or near power transmission line earthing pole, at this time can
There is biggish stray electrical current to flow into underground, when oil transportation gas underground utilities are parallel with underground stray electrical current direction, due to oil transportation gas
There is the biggish erosion resistant coating of resistance on underground utilities surface, and the stray electrical current for flowing into underground can first flow into water conservancy diversion pole 2, stray electrical current
It can be flowed through along water conservancy diversion pole 2, oil transportation gas underground utilities can be prevented by stray current corrosion.Meanwhile the both ends of water conservancy diversion pole 2 are fixed on screen
It covers on ring 1, is connected directly petroleum pipeline not with water conservancy diversion pole 2, when having stray electrical current to pass through on water conservancy diversion pole 2, electric current can be in soil
Diffusing in earth, since the resistance of soil is higher than water conservancy diversion pole 2, electric current can be flowed along water conservancy diversion pole 2, and stray electrical current may not flow into
In soil, protect oil transportation gas underground utilities not by stray current corrosion.
Oil transportation gas underground utilities cross under railway or high voltage transmission line, and stray electrical current is perpendicular to oil transportation gas buried pipe
The direction of line flows into, and stray electrical current can first pass through on water conservancy diversion pole 2 at this time, since water conservancy diversion pole 2 is located at the two sides of oil/gas pipe,
No matter stray electrical current is crossed by any one of two sides direction, it can all be intercepted by water conservancy diversion pole 2, to prevent oil transportation gas underground utilities
By stray current corrosion.
Experimental verification
The ordinary carbon steel pipeline of long 24m, diameter 100mm are embedded to the depths underground 800mm, will be directly the shielding of 700mm
Ring 1 is installed outside carbon steel piping, and carbon steel piping is made to be located at the center of shading ring 1, and the both ends of water conservancy diversion pole 2 are fixed on shading ring 1, and
It is parallel to carbon steel piping, the direct current of 10V (opposite copper sulfate electrode) is passed through in one end of carbon steel piping horizontal direction, passes through inspection
Survey: the other end voltage of water conservancy diversion pole 2 is 1.24V (opposite copper sulfate electrode), and the current potential at carbon steel piping both ends is zero；In water conservancy diversion
It is straight to be passed through 10V (opposite copper sulfate electrode) in the vertical direction of steel pipe at the about 5m of water conservancy diversion pole 2 for the center of pole 2
Galvanic electricity, the current potential for measuring 2 center of water conservancy diversion pole is 2.74V (opposite copper sulfate electrode), and 2 liang of water conservancy diversion pole terminal potential is 0.85V (opposite
Copper sulfate electrode), and the center of carbon steel piping, two terminal potentials are zero.The above test result shows: the present invention prevents stray electrical
The device of stream corrosion underground utilities can effectively prevent underground piping by stray current corrosion.
Claims (6)
1. a kind of device for preventing stray current corrosion underground utilities, which is characterized in that including water conservancy diversion pole (2), the water conservancy diversion pole
(2) setting is in shading ring (1), and the both ends of the water conservancy diversion pole (2) are welded on shading ring (1), and the shading ring (1) passes through
Conducting wire is connected with sacrificial anode (3), and the shading ring (1) is mounted on outside underground utilities, and underground utilities are in shading ring (1)
The heart, the internal diameter of the shading ring (1) are greater than the outer diameter 600mm-800mm of underground utilities, and the water conservancy diversion pole (2) is parallel to buried pipe
Line.
2. a kind of device for preventing stray current corrosion underground utilities according to claim 1, which is characterized in that the screen
Ring (1) is covered for any one in carbon steel ring, zinc-plated steel loop, band steel ring, triangle iron hoop, round steel ring.
3. a kind of device for preventing stray current corrosion underground utilities according to claim 1 or 2, which is characterized in that institute
The cross-sectional area for stating shading ring (1) is 5cm2~10cm2。
4. a kind of device for preventing stray current corrosion underground utilities according to claim 1, which is characterized in that described to lead
Flow pole (2) be carbon steel water conservancy diversion pole, galvanized steel water conservancy diversion pole, band steel water conservancy diversion pole, angle iron water conservancy diversion pole, round steel water conservancy diversion extremely in it is any one
Kind.
5. a kind of device for preventing stray current corrosion underground utilities according to claim 1 or 4, which is characterized in that institute
The cross-sectional area for stating water conservancy diversion pole (2) is 5cm2~10cm2。
6. a kind of device for preventing stray current corrosion underground utilities according to claim 1, which is characterized in that described sacrificial
Domestic animal anode (3) is magnesium-yttrium sacrificial anode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710954799.1A CN107904602B (en) | 2017-10-13 | 2017-10-13 | A kind of device preventing stray current corrosion underground utilities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710954799.1A CN107904602B (en) | 2017-10-13 | 2017-10-13 | A kind of device preventing stray current corrosion underground utilities |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107904602A CN107904602A (en) | 2018-04-13 |
| CN107904602B true CN107904602B (en) | 2019-09-27 |
Family
ID=61840600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710954799.1A Expired - Fee Related CN107904602B (en) | 2017-10-13 | 2017-10-13 | A kind of device preventing stray current corrosion underground utilities |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107904602B (en) |
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|---|---|
| CN107904602A (en) | 2018-04-13 |
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