CN202954094U - Earthing system for cathode protection - Google Patents
Earthing system for cathode protection Download PDFInfo
- Publication number
- CN202954094U CN202954094U CN 201220662283 CN201220662283U CN202954094U CN 202954094 U CN202954094 U CN 202954094U CN 201220662283 CN201220662283 CN 201220662283 CN 201220662283 U CN201220662283 U CN 201220662283U CN 202954094 U CN202954094 U CN 202954094U
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- Prior art keywords
- earthing
- downlead
- net
- galvanic protection
- ground
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- Prevention Of Electric Corrosion (AREA)
Abstract
The utility model relates to an earthing system for cathode protection, which aims at solving the problem that a great deal of cathode protection current of an existing area cathode protection system is lost from an earthing system, and the problems of the change of earth electric field, the electric noise interference on facilities such as instruments and meters in factories, stations and tank areas, and high engineering manufacturing cost and running cost, caused by the loss of the current. The earthing system comprises a cathode protection object and area facilities electrically connected with the cathode protection object, wherein the cathode protection object has access into the ground through a downlead and an earthing network, a confluence network and at least one earthing module with low direct current blocking potential are connected between the downlead and the earthing network, and the downlead, the confluence network, the earthing module and the earthing network are electrically connected in sequence. The earthing system is applicable to protection on buried metal pipes, equipment and metal buildings in areas of petroleum, natural gas, stations, tanks fields and the like.
Description
Technical field
The utility model relates to a kind of galvanic protection ground system, especially can effectively reduce from the regional galvanic protection ground system of ground net leakage cathodic protection current.
Background technology
For prevent oil, natural gas plant, stand, electrochemical corrosions such as buried metal pipeline, equipment and metal structures in the zone such as tank field, need the galvanic protection objects such as buried metallic conduit, equipment and metal structures are implemented galvanic protection on the basis of it being carried out anti-corrosion insulation.
but, normal operation and safe operation needs for the regional facility that guarantees the galvanic protection object and be electrically connected to it, galvanic protection object and the regional facility that is electrically connected to it unavoidably will be installed again the interior ground net in a large amount of downlead access zone, cause the cathodic protection current in the galvanic protection object to run off in a large number by ground system, cause thus cathodic protection engineering cost and cathodic protection system running cost to roll up, in a large amount of inflow regions, underground cathodic protection current also can change earth electric field, formation is to factory, stand, the instrument of tank field, the interference of making an uproar of the electricity of the facilities such as instrument, also can cause interference to other adjacent cathodic protection system simultaneously.
The utility model content
In order to overcome the problems referred to above of existing regional cathodic protection system; and provide a kind of galvanic protection ground system; this system can avoid the loss of the cathodic protection current of galvanic protection object; the normal ground connection work of the regional facility that can also make the galvanic protection object and be electrically connected to it and safe operation make construction costs and running cost low simultaneously.
The technical scheme that the utility model technical solution problem is taked is:
A kind of galvanic protection ground system; the regional facility that comprises the galvanic protection object and be electrically connected to it; described galvanic protection object is through downlead and ground net access the earth; it is characterized in that: be connected with the net that confluxes and have with at least one the earthing module that intercepts low DC potential between downlead and ground net, described downlead, the net that confluxes, earthing module, ground net are electrically connected in turn.
Further, the described net that confluxes is a kind of in netted, the wire, branched structure in the plane that is made of conductor material or space.
Further, described earthing module is solid decoupling device or Equipotential connector or combination both.
Further, described earthing module intercepts the absolute value≤3V of low DC potential.
Further, described downlead to the material of all conductor materials that contact with the external world between earthing module is that negative potential current potential metallic substance or conductor material surface coverage have negative potential current potential metal material layer or conductor material surface coverage that insulation layer is arranged, or the combination of three kinds of modes.
Principle of the present utility model is:
In the galvanic protection ground system, the cathodic protection current in the galvanic protection object is low negative potential direct current, and factory, stand, electric current that the various facilities of tank field need to be released by ground net is non-direct current or noble potential direct current.when the galvanic protection ground system is worked, has the function that intercepts again the low-potential direct electricity by alternating-current and noble potential direct current simultaneously due to earthing module in the leakage current circuit, simultaneously before earthing module in circuit the extraneous conductor material surface of contact be coated with the insulation layer insulation, or the obstruction of the negative potential metallic substance anticathode protective current of conductor material or conductive surface, therefore the direct current of low potential is prevented from releasing and being kept from ground net, but not the lightning current of direct current, the electric currents such as fault current and noble potential direct current are able to from ground net release, thereby make ground system can both prevent the leakage of cathodic protection current, keep again simultaneously the good ground connection leakage current effect of ground system.
Compared with prior art, the beneficial effects of the utility model are:
One, the utility model is guaranteeing regional galvanic protection effect and ground connection facility normally and the deficiency of having avoided cathodic protection current to run off from ground system in trouble-free service at downlead and ground connection; effectively having alleviated the earth electric field that causes after a large amount of cathodic protection currents run off changes the interference of making an uproar of the electricity of the facilities such as instrument, instrument; alleviate the interference to other adjacent cathodes securing systems, also saved simultaneously construction costs and the running cost of regional cathodic protection system.
Two, the net that confluxes of the present utility model is netted, wire, the branched structure in the conductor material plane of making or space, is convenient to be connected with earthing module with downlead be connected, and has characteristics easy to connect.
Three, earthing module of the present utility model belongs to prior art products; can select the earthing module that adapts with it according to different object of protections and different use occasion; also be easy to when earthing module damages simultaneously worse, make the utlity model has practical, the characteristics that use range is wide.
Four, downlead of the present utility model to the material of all conductor materials that contact with the external world between earthing module is that negative potential current potential metallic substance or conductor material surface coverage have negative potential current potential metal material layer or conductor material surface coverage that insulation layer is arranged; or the combination of three kinds of modes; can prevent the loss of cathodic protection current, guarantee that the galvanic protection object is effectively protected.
Description of drawings
Fig. 1 is the utility model galvanic protection ground system elementary diagram.
Mark in figure: 1 is the galvanic protection object, and 2 is regional facility, and 3 is downlead, and 4 for confluxing net, and 5 is earthing module, and 6 is ground net.
Embodiment
In conjunction with Fig. 1, galvanic protection ground system of the present utility model, the regional facility 2 that comprises galvanic protection object 1 and be electrically connected to it, galvanic protection object 1 is through downlead 3 and ground net 6 access the earth, the utility model is connected with the net 4 that confluxes and has with at least one the earthing module 5 that intercepts low DC potential between downlead 3 and ground net 6, downlead 3, the net 4 that confluxes, earthing module 5, ground net 6 are electrically connected in turn; The net 4 that confluxes is a kind of in netted, the wire, branched structure in the plane that is made of conductor material or space; Earthing module 5 is solid decoupling device or Equipotential connector or combination both; Earthing module 5 intercepts the absolute value≤3V of low DC potential; Downlead 3 to the material of all conductor materials that contact with the external world between earthing module 5 is that negative potential current potential metallic substance or conductor material surface coverage have negative potential current potential metal material layer or conductor material surface coverage that insulation layer is arranged, or the combination of three kinds of modes; Negative potential current potential metallic substance is zinc, magnesium, aluminium etc.
Embodiment one
The galvanic protection ground system of the present embodiment, the regional facility 2 that comprises galvanic protection object 1 and be electrically connected to it, galvanic protection object 1 is through downlead 3 and ground net 6 access the earth, the utility model is connected with conflux net 4 and 4 earthing modules 5 with the low DC potential of obstruct between downlead 3 and ground net 6, downlead 3, the net 4 that confluxes, earthing module 5, ground net 6 are electrically connected in turn; 4 earthing modules are connected in parallel on and conflux between net and ground net.The earthing module that the present embodiment is selected is solid decoupling device, and it intercepts the absolute value≤3V of low DC potential, and solid decoupling device belongs to prior art products.The net 4 that confluxes is planar rectangular reticulated structures of being made by conductor material, is convenient to and being connected that downlead 3 is connected with earthing module; Downlead 3 is between earthing module 5, all coat with the extraneous conductor material surface that contacts and are stamped the high purity zinc material layer.
The concrete galvanic protection object 1 of the present embodiment is buried steel pipe and buried metal equipment, and the regional facility 2 that is electrically connected to galvanic protection object 1 is pump equipment, isolation of purified equipment and storage tank equipment.
Embodiment two
The galvanic protection ground system of the present embodiment, the regional facility 2 that comprises galvanic protection object 1 and be electrically connected to it, galvanic protection object 1 is through downlead 3 and ground net 6 access the earth, the utility model is connected with conflux net 4 and 4 earthing modules 5 with the low DC potential of obstruct between downlead 3 and ground net 6, downlead 3, the net 4 that confluxes, earthing module 5, ground net 6 are electrically connected in turn; 4 earthing modules are connected in parallel on and conflux between net and ground net.The earthing module that the present embodiment is selected is that equi-potential connects it, and it intercepts the absolute value≤3V of low DC potential; The net 4 that confluxes is planar rectangular reticulated structures of being made by conductor material, is convenient to and being connected that downlead 3 is connected with earthing module; Downlead 3 is between earthing module 5, all coat with the extraneous conductor material surface that contacts and are stamped insulation layer, so that prevent and reduce the loss of cathodic protection current.
The concrete galvanic protection object 1 of the present embodiment is buried steel pipe and buried metal equipment, and the regional facility 2 that is electrically connected to galvanic protection object 1 is pump equipment, isolation of purified equipment and storage tank equipment.
Principle of work of the present utility model is: in the galvanic protection ground system; cathodic protection current in the galvanic protection object is low negative potential direct current, and factory, stand, electric current that the various facilities of tank field need to be released by ground net is non-direct current or noble potential direct current.when cathodic protection system is worked, has the function that intercepts again the low-potential direct electricity by alternating-current and noble potential direct current simultaneously due to earthing module in the leakage current circuit, simultaneously before earthing module in circuit the extraneous conductor material surface of contact be coated with the insulation layer insulation, or the obstruction of the negative potential metallic substance anticathode protective current of conductor material or conductive surface, therefore the direct current of low potential is prevented from releasing and being kept from ground net, but not the lightning current of direct current, the electric currents such as fault current and noble potential direct current are able to from ground net release, thereby make ground system can both prevent the leakage of cathodic protection current, keep again simultaneously the good ground connection leakage current effect of ground system.
Claims (5)
1. galvanic protection ground system; the regional facility that comprises the galvanic protection object and be electrically connected to it; described galvanic protection object is through downlead and ground net access the earth; it is characterized in that: be connected with the net that confluxes and have with at least one the earthing module that intercepts low DC potential between downlead and ground net, described downlead, the net that confluxes, earthing module, ground net are electrically connected in turn.
2. galvanic protection ground system according to claim 1 is characterized in that: the described net that confluxes is a kind of in netted, the wire, branched structure in the plane that is made of conductor material or space.
3. galvanic protection ground system according to claim 1, it is characterized in that: described earthing module is solid decoupling device or Equipotential connector or combination both.
4. according to claim 1 or 3 described galvanic protection ground systems, is characterized in that: the absolute value≤3V of the low DC potential of described earthing module obstruct.
5. galvanic protection ground system according to claim 1; it is characterized in that: described downlead to the material of all conductor materials that contact with the external world between earthing module is that negative potential current potential metallic substance or conductor material surface coverage have negative potential current potential metal material layer or conductor material surface coverage that insulation layer is arranged, or the combination of three kinds of modes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220662283 CN202954094U (en) | 2012-12-05 | 2012-12-05 | Earthing system for cathode protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220662283 CN202954094U (en) | 2012-12-05 | 2012-12-05 | Earthing system for cathode protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202954094U true CN202954094U (en) | 2013-05-29 |
Family
ID=48459676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220662283 Expired - Lifetime CN202954094U (en) | 2012-12-05 | 2012-12-05 | Earthing system for cathode protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202954094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114150320A (en) * | 2021-12-03 | 2022-03-08 | 深圳承远航空油料有限公司 | Grounding method and system for cathode protection coupler of electric instrument of apron valve well |
-
2012
- 2012-12-05 CN CN 201220662283 patent/CN202954094U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114150320A (en) * | 2021-12-03 | 2022-03-08 | 深圳承远航空油料有限公司 | Grounding method and system for cathode protection coupler of electric instrument of apron valve well |
| CN114150320B (en) * | 2021-12-03 | 2024-04-16 | 深圳承远航空油料有限公司 | Grounding method and system for female protection coupler of electric instrument of apron valve well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180514 Address after: No. 272, Chenghua District new Hung Road, Chenghua District, Chengdu, Sichuan Patentee after: SICHUAN KEHONG OIL AND GAS ENGINEERING CO.,LTD. Address before: No. 143, Chenghua District Hua Lu Road, Chenghua District, Chengdu, Sichuan Patentee before: SICHUAN PETROLEUM CONSTRUCTION ENGINEERING Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130529 |
|
| CX01 | Expiry of patent term |