CN201280594Y - Cathodic protection apparatus having sacrificial anode generating current monitoring function - Google Patents
Cathodic protection apparatus having sacrificial anode generating current monitoring function Download PDFInfo
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- CN201280594Y CN201280594Y CNU2008201225981U CN200820122598U CN201280594Y CN 201280594 Y CN201280594 Y CN 201280594Y CN U2008201225981 U CNU2008201225981 U CN U2008201225981U CN 200820122598 U CN200820122598 U CN 200820122598U CN 201280594 Y CN201280594 Y CN 201280594Y
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- sacrificial anode
- supporting leg
- hall element
- hall sensor
- insulation
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Abstract
The utility model discloses a cathodic protector with a sacrificial anode generating current monitoring function. The protector consists of a sacrificial anode with a sacrificial anode support leg (1) and a current monitoring device (15), wherein, the current monitoring device (15) is assembled on the sacrificial anode support leg (1); the current monitoring device (15) comprises a Hall sensor component, a watertight cable (5), a fill material (6), an insulating encapsulation casing body (7) and a magnetic shielding outer sheath (8); the Hall sensor component consists of a Hall sensor (2), a magnetic conduction ring (3) and a Hall sensor circuit (4); the magnetic conduction ring is sleeved on the sacrificial anode support leg; the Hall sensor is arranged on an opening of the magnetic conduction ring; the Hall sensor circuit is electrically connected with the Hall sensor; the Hall sensor component is encapsulated in the insulating encapsulation casing body which is sleeved on the sacrificial anode support leg; the magnetic shielding outer sheath covers the insulating encapsulation casing body; one end of the watertight cable is electrically connected with the Hall sensor circuit; the other end thereof extends out of the magnetic shielding outer sheath; and except for the Hall sensor component, the sealing cavity is filled with the fill material. The utility model overcomes the shortcoming of the prior device, without damaging the structure of the sacrificial anode, and monitors the sacrificial anode generating current in a non-intervention manner. Even if the monitoring device goes wrong, the sacrificial anode can normally operate.
Description
Technical field
The utility model relates to a kind of cathodic protector that sacrificial anode current output monitoring function is arranged.
Background technology
In order to protect steel structure corrosion in ocean environment to destroy, utilize sacrificial anode that submerged zone and ooze district steel construction (being negative electrode) are carried out the galvanic protection (see figure 1) usually.Because structure formation and envrionment conditions are very big to the corrosion behavior influence of material; particularly for the sea area newly developed that lacks the corrosion measured data; existing galvanic anode protection standard and practical situation often have certain discrepancy, cause the defective in the cathodic protection system design.For verify and check cathodic Protection Design whether rationally, whether working order normal; present stage, effective technical means was that current probe is installed on the sacrificial anode leg; generation electric current to sacrificial anode is monitored; can be so that understand sacrificial anode at initial polarization, keep and the three phases in latter stage, reach the protective current density of design code.
In existing offshore platform cathodic protection monitoring system, monitoring device all adopts splitter (standard resistance) method to measure current of galvanic method, promptly tries to achieve current of galvanic method by the flow through volts lost of standard resistance of measurement.Owing to must make the sacrificial anode working current splitter of all flowing through when measuring; could record current of galvanic method exactly; must at first cut off the (see figure 2) that is electrically connected between sacrificial anode and the protected steel construction (negative electrode) during installation; current of galvanic method is inserted current monitoring probe 13 earlier; flow through the probe in splitter after; flow into the protected body (see figure 3) as negative electrode again, anticathode is implemented corrosionproof protection.The sacrificial anode of ocean steel construction (being negative electrode) all is by being welded on the steel construction with the anode leg of structure with material; in order to cut off being electrically connected between sacrificial anode and the protected steel construction (being negative electrode); the steel construction anode leg that must respectively the sacrificial anode two ends be connected with jacket cuts off from the centre; weld isolated flange again at the anode legs break face two ends of blocking; utilize isolated flange that the anode leg that blocks is continued, sacrificial anode is seated on the protected steel construction again.The line of current probe is connected respectively to the two ends of isolated flange, after protective current being flowed through be connected across the current probe of isolated flange, enters protected body again, implements protection.Above-mentioned insertion type measuring method has the defective of following two aspects:
1) owing to is to be connected in series between sacrificial anode, current probe and the negative electrode; the current of galvanic method current probe of must flowing through earlier just can enter protected body; in case current probe damages; when particularly being exposed to the probe cable generation fracture in the seawater; directly cause the electrical connection between sacrificial anode and the protected structure to open circuit; make sacrificial anode implement protection, cause designed cathodic protection system to lose efficacy, thereby reduce the structure Design life-span protected structure.
2) cutting anode leg utilizes isolated flange antianode leg to implement to connect, and has directly destroyed the sacrificial anode one-piece construction, has reduced the structural strength of sacrificial anode itself.
The utility model content
The purpose of this utility model provides a kind of cathodic protector that sacrificial anode current output monitoring function is arranged.
For achieving the above object, the utility model can be by the following technical solutions: the cathodic protector that sacrificial anode current output monitoring function is arranged, be made up of the sacrificial anode 11 that comprises sacrificial anode supporting leg 1 and a current monitoring probe 15, it is characterized in that: described current monitoring probe 15 is assembled on the sacrificial anode supporting leg 1;
Described current monitoring probe 15 comprises following assembly: hall sensor component, watertight cable 5, packing material 6, insulation-encapsulated housing 7 and magnetic shielding oversheath 8; Hall sensor component is made up of Hall element 2, magnetic guiding loop 3 and Hall element circuit 4;
Magnetic guiding loop 3 is the ring bodies with an opening, is sheathed on the sacrificial anode supporting leg 1; Hall element 2 is located in the opening of magnetic guiding loop, and is fixed on the sacrificial anode supporting leg 1; Hall element circuit 4 is electrically connected with Hall element 2; Described hall sensor component is packaged in the insulation-encapsulated housing 7; Insulation-encapsulated housing 7 is sheathed on the sacrificial anode supporting leg 1, forms annular seal space; Being regardless of the magnetic shielding oversheath 8 of stream by the electric current of sacrificial anode supporting leg is coated on outside the insulation-encapsulated housing 7; Watertight cable 5 one ends are electrically connected with Hall element circuit 4, and the other end stretches out magnetic shielding overcoat 8; Except described hall sensor component, be full of packing material 6 in the described annular seal space.
Described current monitoring probe also comprises Hall element and 1 magnetic guiding loop 2 is fixed on support 9 on the sacrificial anode supporting leg 1.
The above-mentioned preparation method that the cathodic protector of sacrificial anode current output monitoring function is arranged is current monitoring probe 15 of assembling on sacrificial anode supporting leg 1, and number of assembling steps is as follows:
1) magnetic guiding loop 3 that will have an opening is sheathed on the sacrificial anode supporting leg 1;
2) Hall element 2 and Hall element circuit 4 are electrically connected; Hall element circuit 4 is electrically connected with an end of watertight cable 5, and the other end of watertight cable 5 is free; Hall element 2 is placed the opening of magnetic guiding loop 3 and be fixed on the sacrificial anode supporting leg 1;
3) the insulation-encapsulated housing that will be provided with opening 10 is sheathed on the sacrificial anode supporting leg 1, forms cavity body, and hall sensor component is packaged in the insulation-encapsulated housing;
4) packing material 6 is filled described cavity body by described opening 10;
5) after packing material 6 solidifies, magnetic shielding oversheath 8 is coated on outside the insulation-encapsulated housing 7, magnetic shielding oversheath 8 is regardless of the electric current of stream by the sacrificial anode supporting leg; The free end of watertight cable 5 stretches out magnetic shielding oversheath 8;
Obtain being equipped with the cathodic protector that sacrificial anode current output monitoring function is arranged of a current monitoring probe 15.
For achieving the above object, the present invention can also be by the following technical solutions: the cathodic protector that sacrificial anode current output monitoring function is arranged, be made up of the sacrificial anode 11 that comprises sacrificial anode supporting leg 1 and two current monitoring probes 15, it is characterized in that: described two current monitorings probe 15 is assembled in respectively on two sacrificial anode supporting legs 1;
Described current monitoring probe 15 comprises following assembly: hall sensor component, watertight cable 5, packing material 6, insulation-encapsulated housing 7 and magnetic shielding oversheath 8; Hall sensor component is made up of Hall element 2, magnetic guiding loop 3 and Hall element circuit 4;
Magnetic guiding loop 3 is the ring bodies with an opening, is sheathed on the sacrificial anode supporting leg 1; Hall element 2 is located in the opening of magnetic guiding loop, and is fixed on the sacrificial anode supporting leg 1; Hall element circuit 4 is electrically connected with Hall element 2; Described hall sensor component is packaged in the insulation-encapsulated housing 7; Insulation-encapsulated housing 7 is sheathed on the sacrificial anode supporting leg 1, forms annular seal space; Being regardless of the magnetic shielding oversheath 8 of stream by the electric current of sacrificial anode supporting leg is coated on outside the insulation-encapsulated housing 7; Watertight cable 5 one ends are electrically connected with Hall element circuit 4, and the other end stretches out magnetic shielding overcoat 8; Except described hall sensor component, be full of packing material 6 in the described annular seal space.
Described current monitoring probe also comprises Hall element and 1 magnetic guiding loop 2 is fixed on support 9 on the sacrificial anode supporting leg 1.
The above-mentioned preparation method that the cathodic protector of sacrificial anode current output monitoring function is arranged is respectively to assemble a current monitoring probe 15 respectively on two sacrificial anode supporting legs 1, and the number of assembling steps of each current monitoring probe 15 is as follows:
1) magnetic guiding loop 3 that will have an opening is sheathed on the sacrificial anode supporting leg 1;
2) Hall element 2 and Hall element circuit 4 are electrically connected; Hall element circuit 4 is electrically connected with an end of watertight cable 5, and the other end of watertight cable 5 is free; Hall element 2 is placed the opening of magnetic guiding loop 3 and be fixed on the sacrificial anode supporting leg 1;
3) the insulation-encapsulated housing that will be provided with opening 10 is sheathed on the sacrificial anode supporting leg 1, forms cavity body, and hall sensor component is packaged in the insulation-encapsulated housing;
4) packing material 6 is filled described cavity body by described opening 10;
5) after packing material 6 solidifies, magnetic shielding oversheath 8 is coated on outside the insulation-encapsulated housing 7, magnetic shielding oversheath 8 is regardless of the electric current of stream by the sacrificial anode supporting leg; The free end of watertight cable 5 stretches out magnetic shielding oversheath 8;
Obtain being equipped with the cathodic protector that sacrificial anode current output monitoring function is arranged of two current monitoring probes 15.
Any commercially available sacrificial anode all can use.
Any magnetically permeable material that is used for hall measurement all can be used for preparing described magnetic guiding loop, as soft iron, silicon steel or permalloy, and preferred silicon steel.
Any material that satisfies following condition all can be used as packing material: the insulation colloidal liquid, and can be frozen into solid behind the adding solidifying agent certain hour, and not influence magnetic field, or not can not play watertight and resistance to compression effect after solidifying with miscellaneous part generation chemical reaction.Described packing material specifically can be Resins, epoxy; Described Resins, epoxy can adopt the Resins, epoxy of purchase also can adopt the Resins, epoxy of any ordinary method preparation.
The material of described insulation-encapsulated housing specifically can be polyvinylchloride;
The material of described magnetic shielding oversheath can be D36 steel, DH36 steel, soft iron or silicon steel, is preferably D36 steel or DH36 steel.
Described magnetic shielding oversheath is made by electro-conductive material, and described magnetic shielding oversheath is provided with the slit of its shunting of blocking-up by the electric current of sacrificial anode supporting leg.
In the described device, the internal diameter of magnetic guiding loop, the size of insulation-encapsulated housing, magnetic shielding oversheath, support all depends on the caliber of sacrificial anode supporting leg.The optional producer of Hall element circuit provide with the supporting circuit assembly of transmitter, also can develop voluntarily according to actual needs.
In order to prevent that Resins, epoxy from flowing out housing before solidifying, and can clog the space of causing because of mismachining tolerance between sacrificial anode supporting leg and the encapsulating housing with gasket before the infusion epoxy resin.
When using device of the present utility model, watertight cable free one end is docked with other transmission cable under water, letter imports near the cathodic protection monitoring system tapping box the anode into the most at last.
In the device that the utility model provides, the effect of each assembly is as follows:
1) magnetic guiding loop 3
The magnetic field that electric current produced in the sacrificial anode supporting leg of flowing through is gathered together, to improve induction sensitivity and measuring accuracy.
2) Hall element 2 and Hall element circuit 4
Utilize the flow through current of galvanic method of sacrificial anode supporting leg of Hall effectiveness measurement.
3) watertight cable 5
The sensor circuit processed electrical signals is sent to signal collecting device on the water surface.
4) the insulation-encapsulated housing 7
Hall element is shielded; The Hall element and the strong seawater media isolated of magnetic decay that make the current path (airtight section sacrificial anode supporting leg) of measuring position simultaneously and respond to this section passage current magnetic field; guarantee that Hall element can record magnetic field before the seawater decay, to improve the precision and the sensitivity of measuring.
5) packing material 6
Guarantee annular seal space watertight that the insulation-encapsulated housing forms, provide support for housing simultaneously and improve its ultimate compression strength under water.
6) the magnetic shielding oversheath 8
Effect: prevent the external magnetic field interferometry, and the protection housing exempts from collision.
The utility model is owing to adopt above technical scheme, and it has the following advantages:
1) owing to adopt hall sensor component to detect electric current (being current of galvanic method) by the sacrificial anode leg, thus need not cut the anode leg, do not change the mechanical connection between sacrificial anode and the protected structure, so can not destroy the sacrificial anode structure.
2) owing in device, adopt the electric current (be current of galvanic method) of hall sensor component monitoring by the sacrificial anode leg; so do not change the electrical connection path between sacrificial anode and the protected structure; even probe breaks down or damages; also can not influence the works better of sacrificial anode, can not cause cathodic protection system to lose efficacy.
3) owing in device, adopt the electric current (be current of galvanic method) of hall sensor component detection,, greatly reduce heavy industry operation and welding operation amount, reduced construction cost and safety cost so do not need to cut the anode leg by the sacrificial anode leg.
Device of the present utility model is based on the Hall effect principle design, and the Hall effect principle is as follows: when handle is connected with little electric current I
cWafer when placing magnetic induction density to be the magnetic field of B, the current carrier in the semi-conductor is subjected to Lorentz force action to criticize and deflect, and makes the semi-conductor both sides produce the potential difference (see figure 4), this potential difference is Hall voltage V
h, satisfy following relational expression:
R in the formula
hBe Hall coefficient, d is a hall device thickness.
According to Biot-Savart law, when current of galvanic method when steel columnar stays leg flows to the platform jacket structure, will produce magnetic field around the supporting leg, magneticstrength is directly proportional with size of current.This magnetic field can be assembled by soft magnetic materials, detect with hall device then, because the output of magnetic field and hall device has good linear relationship, so the signal size that can utilize hall device to record, direct reaction goes out the size of electric current, that is: I ∝ B ∝ V
hWherein I is the electric current by lead, and B is the magnetic field that produces behind the lead galvanization, V
hThe Hall voltage that in magnetic field B, produces for hall device.
The utility model provides a kind of cathodic protector that sacrificial anode current output monitoring function is arranged; form by sacrificial anode and the current monitoring probe that is assembled on the sacrificial anode supporting leg; the current monitoring probe adopts Hall subassembly; need not to destroy the structure of sacrificial anode, get final product the generation electric current that non-intervention type is measured sacrificial anode.Use cathodic protector of the present utility model, can be under the prerequisite that does not reduce the cathodic protector design safety, implement galvanic protection, even and the current monitoring probe break down or damage, also can not influence the works better of sacrificial anode.
Following embodiment is convenient to understand better the utility model, but does not limit the utility model.
Description of drawings
Fig. 1 is existing galvanic anode protection system architecture synoptic diagram
Fig. 2 supports synoptic diagram for the cutting sacrificial anode.
Fig. 3 measures the current of galvanic method synoptic diagram for using existing probe access type.
Fig. 4 is the Hall effect principle schematic.
Fig. 5 is the front view of current monitoring probe 15.
Fig. 6 is the AA sectional view of current monitoring probe 15.
Fig. 7 is the BB sectional view of current monitoring probe 15.
Fig. 8 is an insulation-encapsulated housing synoptic diagram.
Fig. 9 is for using the synoptic diagram that cathodic protector of the present utility model carries out galvanic protection.
Embodiment
As Fig. 5-shown in Figure 7, current monitoring device 15 comprises hall sensor component, watertight cable 5, packing material 6, insulation-encapsulated housing 7, magnetic shielding oversheath 8 and support 9; Hall sensor component is made up of Hall element 2, magnetic guiding loop 3 and Hall element circuit 4; Magnetic guiding loop 3 is the ring bodies with an opening, is sheathed on the sacrificial anode supporting leg 1, and is fixing by support 9; Hall element 2 is located in the opening of magnetic guiding loop, and is fixed on the sacrificial anode supporting leg 1 by support 9; Hall element circuit 4 is electrically connected with Hall element 2; Described hall sensor component is packaged in the insulation-encapsulated housing 7; Insulation-encapsulated housing 7 is sheathed on the sacrificial anode supporting leg 1, and an opening 10 is arranged on the insulation-encapsulated housing; Being regardless of the magnetic shielding oversheath 8 of stream by the electric current of sacrificial anode supporting leg is coated on outside the insulation-encapsulated housing 7; Watertight cable 5 one ends are electrically connected with Hall element circuit 4, and the other end stretches out magnetic shielding overcoat 8; Except described hall sensor component, be full of packing material 6 in the described insulation-encapsulated housing 7.
Experimental technique among the following embodiment if no special instructions, is ordinary method.
Embodiment 1, the assembling and the application of the cathodic protector of sacrificial anode current output monitoring function are arranged
One, the preparation of assembly of the cathodic protector of sacrificial anode current output monitoring function is arranged
Hall element: available from transmitter Science and Technology Ltd. suddenly in the Nanjing;
Magnetic guiding loop: material is a silicon steel, is the magnetic guiding loop of two semi-ring types;
Hall element circuit: available from transmitter Science and Technology Ltd. suddenly in the Nanjing;
Watertight cable: available from Shenyang automatization institute;
Packing material: universal joint sealant series of loops epoxy resins 201, available from the prosperous chemical industry of Dongguan City gold company limited;
The insulation-encapsulated housing: material is PVC, is two and half housings, has an opening (see figure 8) on one of them half housing;
The magnetic shielding oversheath: material is the D36 steel, is two and half housings.
Support: material is the D36 steel.
Two, the assembling and the application of the cathodic protector of sacrificial anode current output monitoring function are arranged
Install on land, on two sacrificial anode supporting legs 1 of sacrificial anode 11, respectively assemble a current monitoring probe 15 respectively.
1, utilize fastening screw that support is fixed on the Al-Zn-In sacrificial anode supporting leg on (supporting leg diameter and wall thickness are 114 φ * 8.5).
2, two semiorbicular magnetic guiding loops are sheathed on the support, form magnetic guiding loop with an opening.
3, Hall element and Hall element circuit are electrically connected; The Hall element circuit is electrically connected with an end of watertight cable.
4, Hall element is placed the opening of magnetic guiding loop and being fixed on the support.
5, utilize screw that two parts of duroplasts insulation-encapsulated housing are sheathed on the sacrificial anode supporting leg, form cavity body, hall sensor component is packaged in the packing insulation-encapsulated housing, opening up.
6, Resins, epoxy is slowly poured into along the opening on the encapsulating housing, until filling cavity body.
7, treat that Resins, epoxy solidifies substantially after, two portions of magnetic shielding oversheath are installed respectively on the encapsulating housing, form the magnetic shielding oversheath, oversheath is provided with and prevents that current of galvanic method from flowing through the magnetic shielding oversheath and the slit of causing shunting.Leave the space between two portions, guarantee that two portions open circuit.The free end of watertight cable stretches out magnetic shielding oversheath 8.
Obtain the cathodic protector of sacrificial anode current output monitoring function.During application, two sacrificial anode supporting legs of sacrificial anode 11 are connected (see figure 9) with protection negative electrode 12 respectively, the termination that watertight cable is stretched out the magnetic shielding oversheath is gone near the cathodic protection monitoring system tapping box the monitored anode.Two monitoring probes electric current of measuring and the generation electric currents that are sacrificial anode.
Three, the assembling and the application of the cathodic protector of sacrificial anode current output monitoring function are arranged
Install on land, connect with isolated flange again after a sacrificial anode supporting leg of sacrificial anode 11 is blocked, assembling current monitoring probe 15 on another sacrificial anode supporting leg 1 of sacrificial anode 11.
The same step 2 of the assemble method of monitoring sacrificial anode current output device.
During application, two sacrificial anode supporting legs of sacrificial anode 11 are connected with protection negative electrode 12 respectively, the termination that watertight cable is stretched out the magnetic shielding oversheath is gone near the cathodic protection monitoring system tapping box the monitored anode.The electric current that monitoring probe is measured is the generation electric current of sacrificial anode.
Claims (8)
- The cathodic protector that 1, sacrificial anode current output monitoring function is arranged, be made up of a sacrificial anode that comprises sacrificial anode supporting leg (1) (11) and a current monitoring probe (15), it is characterized in that: described current monitoring probe (15) is assembled on the sacrificial anode supporting leg (1);Described current monitoring probe (15) comprises following assembly: hall sensor component, watertight cable (5), packing material (6), insulation-encapsulated housing (7) and magnetic shielding oversheath (8); Hall sensor component is made up of Hall element (2), magnetic guiding loop (3) and Hall element circuit (4);Magnetic guiding loop (3) is the ring body with an opening, is sheathed on the sacrificial anode supporting leg (1); Hall element (2) is located in the opening of magnetic guiding loop, and is fixed on the sacrificial anode supporting leg (1); Hall element circuit (4) is electrically connected with Hall element (2); Described hall sensor component is packaged in the insulation-encapsulated housing (7); Insulation-encapsulated housing (7) is sheathed on the sacrificial anode supporting leg (1), forms annular seal space; The magnetic shielding oversheath (8) that is regardless of the electric current of stream by the sacrificial anode supporting leg is coated on outside the insulation-encapsulated housing (7); Watertight cable (5) one ends are electrically connected with Hall element circuit (4), and the other end stretches out magnetic shielding overcoat (8); Except described hall sensor component, be full of packing material (6) in the described annular seal space.
- 2, device as claimed in claim 1 is characterized in that: described current monitoring probe (15) also comprises and is used for Hall element (2) and magnetic guiding loop (3) are fixed on support (9) on the sacrificial anode supporting leg (1).
- 3, device as claimed in claim 1 or 2 is characterized in that: the material of described magnetic guiding loop (3) is soft iron, silicon steel or permalloy; Described packing material (6) is a Resins, epoxy; The material of described insulation-encapsulated housing is a polyvinylchloride; The material of described magnetic shielding oversheath (8) is D36 steel, DH36 steel, soft iron or silicon steel.
- 4, device as claimed in claim 3 is characterized in that: the material of described magnetic guiding loop (3) is a silicon steel; The material of described magnetic shielding oversheath (8) is D36 steel or DH36 steel.
- The cathodic protector that 5, sacrificial anode current output monitoring function is arranged, be made up of the sacrificial anode that comprises sacrificial anode supporting leg (1) (11) and two current monitoring probes (15), it is characterized in that: described two current monitorings probes (15) are assembled in respectively on two sacrificial anode supporting legs (1);Described current monitoring probe (15) comprises following assembly: hall sensor component, watertight cable (5), packing material (6), insulation-encapsulated housing (7) and magnetic shielding oversheath (8); Hall sensor component is made up of Hall element (2), magnetic guiding loop (3) and Hall element circuit (4);Magnetic guiding loop (3) is the ring body with an opening, is sheathed on the sacrificial anode supporting leg (1); Hall element (2) is located in the opening of magnetic guiding loop, and is fixed on the sacrificial anode supporting leg (1); Hall element circuit (4) is electrically connected with Hall element (2); Described hall sensor component is packaged in the insulation-encapsulated housing (7); Insulation-encapsulated housing (7) is sheathed on the sacrificial anode supporting leg (1), forms annular seal space; The magnetic shielding oversheath (8) that is regardless of the electric current of stream by the sacrificial anode supporting leg is coated on outside the insulation-encapsulated housing (7); Watertight cable (5) one ends are electrically connected with Hall element circuit (4), and the other end stretches out magnetic shielding overcoat (8); Except described hall sensor component, be full of packing material (6) in the described annular seal space.
- 6, device as claimed in claim 5 is characterized in that: described current monitoring probe (15) also comprises and is used for Hall element (2) and magnetic guiding loop (3) are fixed on support (9) on the sacrificial anode supporting leg (1).
- 7, as claim 5 or 6 described devices, it is characterized in that: the material of described magnetic guiding loop (3) is soft iron, silicon steel or permalloy; Described packing material (6) is a Resins, epoxy; The material of described insulation-encapsulated housing is a polyvinylchloride; The material of described magnetic shielding oversheath (8) is D36 steel, DH36 steel, soft iron or silicon steel.
- 8, device as claimed in claim 7 is characterized in that: the material of described magnetic guiding loop (3) is a silicon steel; The material of described magnetic shielding oversheath (8) is D36 steel or DH36 steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201225981U CN201280594Y (en) | 2008-09-25 | 2008-09-25 | Cathodic protection apparatus having sacrificial anode generating current monitoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNU2008201225981U CN201280594Y (en) | 2008-09-25 | 2008-09-25 | Cathodic protection apparatus having sacrificial anode generating current monitoring function |
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| CN201280594Y true CN201280594Y (en) | 2009-07-29 |
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| CNU2008201225981U Expired - Fee Related CN201280594Y (en) | 2008-09-25 | 2008-09-25 | Cathodic protection apparatus having sacrificial anode generating current monitoring function |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614730A (en) * | 2013-11-27 | 2014-03-05 | 北京安科管道工程科技有限公司 | System and method for monitoring buried pipeline cathode protection |
| CN104451704A (en) * | 2014-12-08 | 2015-03-25 | 西安石油大学 | Potential detection and collection system for pulse constant potential power supply |
| CN109913878A (en) * | 2019-04-04 | 2019-06-21 | 中国石油化工股份有限公司 | Cathode protection sacrificial anode monitoring device and consumption detection method |
| CN115161645A (en) * | 2022-06-16 | 2022-10-11 | 华能(大连)热电有限责任公司 | Cathode protection device of centrifugal seawater booster pump |
-
2008
- 2008-09-25 CN CNU2008201225981U patent/CN201280594Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614730A (en) * | 2013-11-27 | 2014-03-05 | 北京安科管道工程科技有限公司 | System and method for monitoring buried pipeline cathode protection |
| CN103614730B (en) * | 2013-11-27 | 2016-02-10 | 北京安科管道工程科技有限公司 | To the system and method that buried pipeline galvanic protection is monitored |
| CN104451704A (en) * | 2014-12-08 | 2015-03-25 | 西安石油大学 | Potential detection and collection system for pulse constant potential power supply |
| CN109913878A (en) * | 2019-04-04 | 2019-06-21 | 中国石油化工股份有限公司 | Cathode protection sacrificial anode monitoring device and consumption detection method |
| CN109913878B (en) * | 2019-04-04 | 2021-01-05 | 中国石油化工股份有限公司 | Cathode protection sacrificial anode monitoring device and consumption detection method |
| CN115161645A (en) * | 2022-06-16 | 2022-10-11 | 华能(大连)热电有限责任公司 | Cathode protection device of centrifugal seawater booster pump |
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