CN104988514B - A kind of erosion-resisting device in metallic conduit surface - Google Patents
A kind of erosion-resisting device in metallic conduit surface Download PDFInfo
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- CN104988514B CN104988514B CN201510430398.7A CN201510430398A CN104988514B CN 104988514 B CN104988514 B CN 104988514B CN 201510430398 A CN201510430398 A CN 201510430398A CN 104988514 B CN104988514 B CN 104988514B
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- metallic conduit
- erosion
- magnetic guiding
- guiding loop
- resisting device
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Abstract
The invention discloses a kind of erosion-resisting device in metallic conduit surface, it is characterised in that the erosion-resisting device in metallic conduit surface includes oscillating circuit (10), coil (1) and magnetic guiding loop；Metallic conduit (4) is enclosed in the magnetic guiding loop；The coil (1) is wrapped on the magnetic guiding loop, and the coil (1) is connected to form current loop with the oscillating circuit (10)；The magnetic guiding loop is ferrite, cobalt and one kind of nickel or its mixture, the normal direction of plane and the angle of the metallic conduit (4) axis direction are 0 °~60 ° where the magnetic guiding loop, for introducing alternating electromagnetic field to the metallic conduit (4), make metallic conduit (4) surface anticorrosive.The erosion-resisting device metal anti-corrosion effects in the metallic conduit surface are stable, will not additionally introduce impurity, energy laser propagation effect is good, safe, is easy to practical application.
Description
Technical field
The invention belongs to metals against corrosion field, metallic conduit table is realized using electromagnetic field/ripple more particularly, to one kind
The erosion-resisting device in face.
Background technology
Corrosion is the big problem of long-standing problem industrial one, by taking petroleum chemical industry as an example, annual petroleum chemical industry
Loss caused by loss that corrosion is caused is far longer than the natural calamities such as floods, fire and earthquake, wherein, metal tube
Road corrosion accounts for significant proportion.Under technological progress and industrial requirements, various novel pipeline manufacturing technologies are developed rapidly, various
Anticorrosive method is also arisen at the historic moment.
Conventional metals against corrosion method mainly has following several.The first is by adding anticorrosive in metallic conduit
Agent, this mode more efficiently can prevent pipeline internal medium from being chemically reacted with metallic conduit, but due to the addition of reagent
The chemical composition of pipeline internal medium can be changed, thus this method is not widely adopted.Second is to manufacture non-with the mode of sputtering
Amorphous metal corrosion-resistant coating, the coating performance is stable, will not change the chemical composition of pipeline internal medium, because coating is to metal
Pipeline and fluids within pipes medium serve buffer action, can suppress the generation of corrosion；But, due to amorphous metal coating
Tend to crystallization when heated, also very sensitive to hydrogen embrittlement, the application conditions of preparation technology and pipeline to coating there are many limits
System.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, it is an object of the invention to provide a kind of metallic conduit surface
Erosion-resisting device, wherein by the structure and its set-up mode of its key component, material, electromagnetic field producing method, energy
Transmission means etc. is improved, and can effectively solve the problem that existing metals against corrosion effect is unstable and possible compared with prior art
The problem of introducing impurity, and the energy laser propagation effect of the device is good, security is good, is easy to practical application.
To achieve the above object, it is proposed, according to the invention, there is provided a kind of erosion-resisting device in metallic conduit surface, its feature exists
In the erosion-resisting device in metallic conduit surface includes oscillating circuit, coil and magnetic guiding loop；Metallic conduit is enclosed on the magnetic guiding loop
It is interior；The coil is wrapped on the magnetic guiding loop, and the coil is connected to form current loop with the oscillating circuit；It is described to lead
Magnet ring is the normal direction of plane where ferrite, cobalt and one kind of nickel or its mixture, the magnetic guiding loop and the metallic conduit
The angle of axis direction is 0 °~60 °, for introducing alternating electromagnetic field to the metallic conduit, makes the anti-corruption in metallic conduit surface
Erosion.
As present invention further optimization, the erosion-resisting device in metallic conduit surface is met：
Wherein, μ is the magnetic conductivity of the metallic conduit, and γ is the electrical conductivity of the metallic conduit；ω is angular frequency, and
The π of ω=2 f, f are the frequency for the oscillating current that the oscillating circuit is conveyed to the coil.
As present invention further optimization, the magnetic conductance ring is ferrite core.
As present invention further optimization, the magnetic guiding loop is tetracyclic ring, pentagon ring, hexagonal rings and circular rings
In any one.
As present invention further optimization, the oscillating circuit is used to convey oscillating current, the vibration to the coil
The frequency of electric current is 20KHz~1000KHz.
By the contemplated above technical scheme of the present invention, compared with prior art, have the advantages that：
1. the metallic conduit surface anti-corrosion device in the present invention is by the way of pure physics, by oscillating circuit, coil,
Magnetic guiding loop (such as ferrite core), alternating electromagnetic field is delivered in metallic conduit, does not introduce other impurities, and stability is high.Should
The erosion-resisting device in metallic conduit surface, ferrite core is looped around on metallic conduit with closed form, and alternate electrical signal passes through iron
Oxysome ring, is coupled to metallic conduit, makes also to produce alternating current in metallic conduit；High-frequency alternating current can produce alternating magnetic field, magnetic
Field direction is perpendicular to AC current direction, and charged ion or electronics are in the alternating magnetic field by pointing to pipeline outer surface
Lorentz force, so as to generate Kelvin effect；Skin effect makes electric current only be flowed through from pipe surface, the liquid transported inside pipeline
Electric current very little in body, even zero；The electronics that inner surface of pipeline metal loses transfers to the outside of pipeline, so as to suppress pipeline
Chemically reacted with liquid (such as water), prevent corrosive pipeline.
2. the present invention produces alternating electromagnetic field left and right extension in the duct, even if can have a little decay more at a distance, still
Remain to greatly expand sphere of action of the alternating electromagnetic field to metallic conduit.Magnetic guiding loop (especially ferrite core) possess permeability compared with
Height, magnetic conductivity is higher, and the impedance of low frequency is bigger, and the impedance of high frequency is smaller, can be preferably by alternating electromagnetic field (especially high frequency
Alternating electromagnetic field) it is incorporated into metallic conduit, and by the energy coupling of inductance coil to metallic conduit.Compared with directly on pipeline
Wound around coil introduces the mode of electromagnetic field, and the present invention can effectively reduce electromagnetic field by using the mutual inductor containing magnetic guiding loop
Energy loss, efficiently realize the transmission of electromagnetic field.
Magnetic guiding loop is enclosed on pipeline, and coil, which is then wrapped on magnetic guiding loop, (can both wind a part for magnetic guiding loop, such as four
Certain of side shape ring on one side, can also wind whole magnetic guiding loop), form Equivalent Transformer circuit；The normal side of plane where magnetic guiding loop
It is 0 °~60 ° to the angle with the axis direction of pipeline, can be good at transmitting the energy of oscillating circuit, be easy to metallic conduit
Surface carries out anticorrosive protection.
3. the present invention skin depth (i.e. △) be preferably no more than 2mm (for example, can further preferably 0.5mm,
1mm, 1.5mm), both ensure that protecting effect of the alternating electromagnetic field to metallic conduit surface, turn avoid electromagnetic wave energy other
The loss of aspect.Further, since skin depth makes the energy of electromagnetic field concentrate near pipe surface position, pipeline delivered inside
Liquid (such as water) in energy of electromagnetic field it is minimum, pipeline outer wall transmit electromagnetic field also eventually import the earth, security
It is high.
Brief description of the drawings
Fig. 1 is the structural representation of the erosion-resisting device in metallic conduit surface in the present invention；
Fig. 2 is wire surrounding magnetic field with the increased schematic diagram of wire radical, wherein Fig. 2 a 1 wire of correspondence, Fig. 2 b correspondences 2
Root wire, Fig. 2 c correspondence multiple conducting wires；
Fig. 3 is the magnetic line of force schematic diagram (i.e. the principle schematic of Kelvin effect mechanism of production) of pipe-like structure, wherein scheming
3a correspondences are combined into duct-like multiple conducting wires, Fig. 3 b correspondence pipelines.
In accompanying drawing, the implication of each reference is as follows：1 is coil, and 2 be fixed ferrite component plastic bolt, and 3 be iron
Oxysome component (forms ferrite core) after combination, 4 be metallic conduit, and 5 be free electron signal, and 6 be the magnetic inside metallic conduit
Field magnetic line of force signal；7 be the signal of wire surrounding magnetic field, 8 be plain conductor cross section signal (×, to be customary in the art
Implication, i.e., × represent in paper sensing, represent outer perpendicular to paper sensing)；9 be Switching Power Supply；10 be vibration electricity
Road (i.e. alternating signal generation circuit).
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Not constituting conflict each other can just be mutually combined.
Metallic conduit surface anti-corrosion device in the present invention includes Switching Power Supply, alternating signal generation circuit and ferrite
Ring；Ferrite core is looped around on metallic conduit with closed form, and alternating signal is coupled to metallic conduit by ferrite core, makes
Also alternating current is produced in metallic conduit.The alternating current of high frequency causes Kelvin effect in metallic conduit, makes pipeline internal electric field
Intensity is zero, and the free electron of metallic conduit can only be transferred to pipeline external surface, so as to suppress liquid medium and pipeline in pipeline
The chemical reaction of material, it is therefore prevented that the generation of corrosion.
Wherein, Switching Power Supply is optional device, plays the direct current that 220V electric main is converted to voltage constant
The effect of constant pressure source, it can provide enough energy for alternating signal generation circuit, so that device is that metallic conduit is erosion-resisting
Process provides larger power.
Alternating signal generation circuit can produce ac signal with multitude of different ways.The principle such as vibrated using LC,
Pure oscillation electric current that is a series of continuous and exponentially decaying constantly is produced to electric capacity and inductance coil discharge and recharge by constant pressure source
Signal；The higher alternating signal of optional frequency can also be produced with other electro coupled oscillators containing electron tube, semiconductor transistor,
Such as square wave, sawtooth waveforms, triangular wave (i.e. any high frequency alternating signal, including antihunt signal and non-antihunt signal) can be in metals
Cause Kelvin effect in pipeline, so that for anticorrosive.
In actual applications, suitable AC signal frequency can be selected according to different tubing (material, thickness), from
And control to ingratiate with depth, produce optimal anti-corrosion effects.The calculation formula of skin depth is：Wherein, ω is
Angular frequency, ω=2 π f (rad/s), μ are pipeline material magnetic conductivity (H/m), and γ is pipeline material electrical conductivity (S/m).When pipeline material
The timing of material one, skin depth is main relevant with signal frequency f, therefore the selection of signal frequency will can make skin depth as small as possible
(present invention is preferably in 2mm).
Ferrite core plays a part of energy coupling in a device.Ferrite core one end and the electricity of alternating signal generation circuit
Feel coil to be connected, the other end is then socketed on metallic conduit.Device equivalent to one transformer on the whole, by former end-coil alternation
The energy coupling of signal is into the metallic conduit at secondary end；Metallic conduit then can be considered the secondary end-coil of a diameter very big single turn.
In order to which the metallic conduit surface anti-corrosion device that provides of the present invention is further illustrated, referring now to accompanying drawing and combine
Details are as follows for specific embodiment：
Embodiment 1
As shown in figure 1, the device is by Switching Power Supply 9, alternating signal generation circuit 10, ferrite core 3 and metallic conduit 4
Constitute, wherein 1 is metal winding displacement, 2 be fixation plastic bolt, and 5 be free electron signal, and 6 be the magnetic field inside metallic conduit
Signal.
Embodiment 2
In practical operation, we according to the material and thickness of duct wall, can change the frequency of alternating signal, so as to change
Skin depth, improves antiseptic effect.Skin depth and the inversely proportional relation of frequency, by theoretical calculation, work as alternating signal frequency
In 20KHz~1000KHz, anti-metal corrosive pipeline effect is preferable.
As shown in Fig. 2 representing the cross section of plain conductor with circle 7, small cross represents electric current in a certain moment wire
Flow direction, the direction 8 of wire surrounding magnetic field is may determine that by " right-hand rule ", is situation shown in Fig. 2 a.On this basis,
Consider two wires in close proximity, at this moment the magnetic line of force around them can be distorted, a kind of two circuit shape is presented, but
Still it can run along clockwise direction.Some extra wires of addition, the magnetic line of force can further be bent, as shown in figs. 2 b and 2 c.
Further, if many wires are combined into a cylinder (doing one " by leading thread pipe "), such as scheme
Shown in 3a, managing the outer magnetic line of force will along clockwise direction, and the magnetic line of force inside pipe is in the counterclockwise direction.If we have substantial amounts of electricity
Line, and a circle is lined up into the end of electric wire, then the combination of a large amount of electric wires can be approximately metallic conduit.Magnetic field outside present pipe
Direction is clockwise, and the magnetic direction inside pipe is counterclockwise.In fact, the magnetic field is anticipated from counter-clockwise direction is changed into clockwise
Taste is necessary for zero in some local magnetic fields -- i.e. and the surface of pipeline, as shown in Figure 3 b, the circle of wherein overstriking represents metal
It is precisely the position that magnetic field is zero at the inside and outside wall of pipeline, pipeline outer wall.
Consider again the region that magnetic field in metallic conduit is not zero.There can be the magnetic field being continually changing inside pipeline,
The magnetic field of change can excite the electric field of change, induced electric field and then generation reverse current.As a result, electric current inside pipeline by
To resistance so that it is zero that it, which is cancelled completely to electric current,.Near surface, magnetic field drops to zero, so the electric current without anti-gesture.Cause
This, the alternating current for flowing through conductor be would tend to flow to surface, and the center of conductor is flowed through without electric current, and this is Kelvin effect production
Raw mechanism.
For example, such reaction is there occurs in Fig. 1 in pipeline, the water containing hydrochloric acid (HCl) impurity by zinc-plated pipeline (i.e.
Scribble zinc Zn).During generation corrosion reaction, the zinc atom in metallic conduit is dissolved in water, a zinc atom lose 2 electronics into
For the ion (Zn of positively charged2+).Electronics enter water in hydrogen ion H+(hydrogen ion in hydrochloric acid HCl) is combined, and produces hydrogen.
The electrons for having zinc dissolving release in the position of this anti-corrosion device, pipeline flow through pipeline by AC signal.Due to the skin effect that becomes
Should, they are forced to swim over to pipeline external.This means in the absence of any electronics that can be used for chemically reacting, blocking reaction chain.Institute
It can not be continued with the reaction, therefore, etching-stop.
The high frequency that the present invention is produced alternating signal generation circuit (i.e. oscillating circuit) using the operation principle of transformer is handed over
Stream signal is coupled in metallic conduit by ferrite core, no matter the pipe diameter size and the peripheral diameter of pipeline of metallic conduit, should
Device can produce high frequency ac signal in the duct well；Also, due to Kelvin effect, alternating current will be only in pipe surface
The depth of upper millimeter magnitude is flowed through, and electric current will not be produced inside pipeline；The free electron that inner-walls of duct metal loses will not be deposited
It is inside pipeline, but is guided to pipe surface, so that will not be because of receiving and losing electrons between tube fluid and inside pipe wall
Chemically react, that is, inhibit the corrosion of pipeline.
Oscillating circuit is exported can be according to pipeline needs, the circle for the coil being wrapped on ferrite core to the voltage magnitude of coil
Number is adjusted flexibly, for example, the peak-to-peak value of the voltage can be 20V~80V, because voltage is high frequency voltage, average voltage level is more
It is small, it can further improve security.
Frequency, the amplitude of input voltage and civil power due to oscillating circuit may be not quite identical, therefore in oscillating circuit
(as shown in Figure 1), example such as reduction voltage circuit, pulse-generating circuit, power switch circuit (correspondence Switching Power Supply 9) also can be set in front end
Such as, civil power 30V direct current be can be converted to by reduction voltage circuit, then random signal pulse-generating circuit, work(sequentially passed through
What rate on-off circuit finally entered oscillating circuit is transferred to end.Random signal pulse-generating circuit, power switch circuit and shake
Swinging circuit can be with Integrated design on a signal plate.Pulse-generating circuit can produce control wave to control power to open
Close device realization to be switched on and off, device for power switching is for realizing that power supply provides the switch of electric energy to oscillating circuit.
In addition, ferrite core can also be other quadrangles, pentagon or circle, each bar side can use plastic fastening
(such as screw rod) is connected, as long as the ring-wound pipeline that one group of ferrite core formation closes；The method of plane where ferrite core
The angle in line direction and conduit axis direction is 0 °~60 °, can be 15 °, 30 °, 45 °；Because coil is equivalent to transformer electricity
The primary coil on road, coil can both wind a part for ferrite core, can also wind ferrite core overall.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., it all should include
Within protection scope of the present invention.
Claims (3)
1. a kind of erosion-resisting device in metallic conduit surface, it is characterised in that the erosion-resisting device in metallic conduit surface includes
Oscillating circuit (10), metal winding displacement (1) and magnetic guiding loop；Metallic conduit (4) is enclosed in the magnetic guiding loop；The metal winding displacement (1)
It is wrapped on the magnetic guiding loop, and the metal winding displacement (1) is connected to form current loop with the oscillating circuit (10)；It is described to lead
Magnet ring is the normal direction of plane where ferrite, cobalt and one kind of nickel or its mixture, the magnetic guiding loop and the metallic conduit
(4) angle of axis direction is 0 °~60 °, for introducing alternating electromagnetic field to the metallic conduit (4), makes metallic conduit (4)
Surface is anticorrosive；
In addition, the erosion-resisting device in the metallic conduit surface is met：
<mrow>
<mi>&Delta;</mi>
<mo>=</mo>
<msqrt>
<mfrac>
<mn>2</mn>
<mrow>
<mi>&omega;</mi>
<mi>&mu;</mi>
<mi>&gamma;</mi>
</mrow>
</mfrac>
</msqrt>
<mo>&le;</mo>
<mn>2</mn>
<mi>m</mi>
<mi>m</mi>
<mo>,</mo>
</mrow>
Wherein, μ is the magnetic conductivity of the metallic conduit (4), and γ is the electrical conductivity of the metallic conduit (4)；ω is angular frequency, and
And the π of ω=2 f, f are the frequency for the oscillating current that the oscillating circuit (10) is conveyed to the metal winding displacement (1)；
The magnetic guiding loop is ferrite core.
2. the erosion-resisting device in metallic conduit surface as claimed in claim 1, it is characterised in that the magnetic guiding loop is quadrangle
Any one in ring, pentagon ring, hexagonal rings and circular rings.
3. the erosion-resisting device in metallic conduit surface as claimed in claim 1 or 2, it is characterised in that the oscillating circuit (10)
For conveying oscillating current to the metal winding displacement (1), the frequency of the oscillating current is 20kHz~1000kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510430398.7A CN104988514B (en) | 2015-07-21 | 2015-07-21 | A kind of erosion-resisting device in metallic conduit surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510430398.7A CN104988514B (en) | 2015-07-21 | 2015-07-21 | A kind of erosion-resisting device in metallic conduit surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104988514A CN104988514A (en) | 2015-10-21 |
| CN104988514B true CN104988514B (en) | 2017-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510430398.7A Active CN104988514B (en) | 2015-07-21 | 2015-07-21 | A kind of erosion-resisting device in metallic conduit surface |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7198706B2 (en) * | 1997-04-25 | 2007-04-03 | Canadian Auto Preservation Inc. | Method for inhibiting corrosion of metal |
| CN101519781A (en) * | 2008-02-25 | 2009-09-02 | 耿子祺 | Magnetic field electrochemical corrosion prevention |
| CN202849548U (en) * | 2012-08-02 | 2013-04-03 | 周绮玲 | Device for inhibiting corrosion or scaling of metal pipeline |
| AU2012392207B2 (en) * | 2012-10-11 | 2018-03-08 | Sembcorp Marine Repairs & Upgrades Pte. Ltd. | System and method for providing corrosion protection of metallic structure using time varying electromagnetic wave |
| CN202925101U (en) * | 2012-12-03 | 2013-05-08 | 周绮玲 | Scale removing and preventing equipment for treatment of water in pipeline |
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