CN108823575A - Collecting well group cathodic protection direct current distributor and production method and guard method - Google Patents
Collecting well group cathodic protection direct current distributor and production method and guard method Download PDFInfo
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- CN108823575A CN108823575A CN201810957813.8A CN201810957813A CN108823575A CN 108823575 A CN108823575 A CN 108823575A CN 201810957813 A CN201810957813 A CN 201810957813A CN 108823575 A CN108823575 A CN 108823575A
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- 238000004210 cathodic protection Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 230000004224 protection Effects 0.000 claims abstract description 19
- 239000003129 oil well Substances 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000000919 ceramic Substances 0.000 claims description 41
- 229910001006 Constantan Inorganic materials 0.000 claims description 23
- 239000012774 insulation material Substances 0.000 claims description 22
- 238000009413 insulation Methods 0.000 claims description 21
- 238000004804 winding Methods 0.000 claims description 8
- 239000003973 paint Substances 0.000 claims description 7
- 230000011218 segmentation Effects 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 238000007373 indentation Methods 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims 4
- 238000007790 scraping Methods 0.000 claims 1
- 238000009826 distribution Methods 0.000 abstract description 11
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002320 enamel (paints) Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C23F13/20—Conducting electric current to electrodes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for DC mains or DC distribution networks
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Thermistors And Varistors (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The present invention provides a kind of collecting well group cathodic protection direct current distributor and production method and guard methods; including multiple duplex resistance value section rotary rotary rheostats; one end of each duplex resistance value section rotary rotary rheostat is connect with the cathode of cathodic protection DC power supply, and the other end is separately connected corresponding oil well casing or well casing；Duplex resistance value section rotary rotary rheostat is made of two simply connected section rotary rotary rheostat parallel connections, and duplex resistance value section rotary rotary rheostat is externally provided with metal protection case.The present invention replaces not being segmented conventional rotary rheostat with resistance value section rotary rotary rheostat, has the features such as small in size, light-weight, direct current distribution power is big, consumption energy itself is small, and resistance value adjustable range is big, the operation is stable.It ensure that potential difference between playing balance well during collecting well group cathodic protection, provide normal cathodic protection current to collecting well group casing, set, which will be in control protection, to be corroded.
Description
Technical field
The invention belongs to casing protection technology fields, and in particular to a kind of collecting well group cathodic protection direct current distributor and
Production method and guard method.
Background technique
With the extension of use time, the corrosion of collecting well group casing is also got worse collecting well group, directly affects oil
The further exploitation in field.For collecting well group casing corrosion based on outer wall corrosion, cathodic protection is generally acknowledged control external corrosion row
Effective technology.Reasonable cathodic Protection Design will effectively extend the service life of collecting well group casing.Collecting well group yin
Pole protection realizes that the process of this principle is that DC power cathode and each individual well casing connection, DC power anode connect with deep-well
Ground anode connection, to constitute protective loop.
The unit of collecting well group cathodic protection at present needs 1 station power distribution cabinet, 1 silicon rectifier corrosion protection instrument, 1 DC distribution frame,
Three cabinet bodies, take up a large area, and equipment weighs more than 600 kilograms, need to build special power distribution room, carry laborious.In DC distribution frame
Porcelain dish rheostat group because of conventional design defect, volume occupies greatly the originals such as a cabinet, electric current distribution power are small, fever is serious
Cause has the damage of quite a few DC distribution frame every year, needs a large amount of maintenance costs.Due to not digitizing long-range monitoring, manage
It does not catch up with again, administrative staff do not know for a long time, as a result cause cathodic protection cabinet that cannot provide to collecting well group casing normal
Cathodic protection current, casing, which cannot be protected, to be corroded.
In conclusion needing the new collecting well group cathodic protection high power DC distributor of one kind to meet oil field clump formula
The requirement of well group cathodic protection development.
Summary of the invention
The purpose of the present invention is to provide a kind of collecting well group cathodic protection direct current distributors, pass through the resistance of variation
Value changes collecting well group cathodic protection direct current and distributes electric current, balances potential difference between each well, collecting well group set is in control best protection
Current potential prevents electrochemical corrosion.
It is another object of the present invention to provide a kind of production methods of collecting well group cathodic protection direct current distributor.
It is another object of the present invention to provide a kind of collecting well group casing cathode protecting process.
Technical solution provided by the invention is as follows：
A kind of collecting well group cathodic protection direct current distributor, including multiple duplex resistance value section rotary rotary rheostats, Mei Geshuan
One end of connection resistance value section rotary rotary rheostat is connect with the cathode of cathodic protection DC power supply, and the other end is separately connected corresponding
Oil well casing or well casing；
Duplex resistance value section rotary rotary rheostat is made of two simply connected section rotary rotary rheostat parallel connections, the duplex resistance value point
The rotary rheostat of section is externally provided with metal protection case.
The simply connected section rotary rotary rheostat includes fixed stator one, fixed movable plate, fixed stator two, grading resistance body
One, blade contact, rotation movable plate, grading resistance body two, rotation axis and hollow cylinder ceramic skeleton, the hollow cylinder pottery
Porcelain body frame is non-close shape；
The fixed stator one and fixed stator two are fixedly arranged on two indentation, theres on hollow cylinder ceramic skeleton top, institute respectively
The top the center point that rotation axis is set to hollow cylinder ceramic skeleton is stated, the fixed movable plate and rotation movable plate connect with rotation axis
It connecing, the grading resistance body one and grading resistance body two are wrapped in hollow cylinder ceramic skeleton using resistance insulation material,
And the two is covered with hollow cylinder ceramic skeleton, is connected between the grading resistance body one and grading resistance body two by connector；
The grading resistance body one and grading resistance body two are located at the plane of the resistance insulation material at the top of hollow cylinder ceramic skeleton
Optical surface is conductive, the blade contact of the rotation movable plate endpoint and the conductive portions contact.
Two simply connected section rotary rotary rheostats are used by corresponding fixed stator one, fixed movable plate, fixed stator two
It is in parallel after short-term connection to constitute duplex resistance value section rotary rotary rheostat.
The resistance insulation material is insulation constantan side's line, the grading resistance body one and grading resistance body two it is non-conductive
Part is fixed on hollow cylinder ceramic skeleton by high-temperature insulation material.
The hollow cylinder ceramic skeleton outer diameter is 100mm, internal diameter 60mm, thickness 80mm.
The sliding stroke of the simply connected section rotary rotary rheostat is 320 ± 5 °.
The duplex resistance value section rotary rotary rheostat is 1600W/5 Ω, and simply connected section rotary rotary rheostat is 800W/10
Ω。
The grading resistance body one is around in hollow cylinder as resistance insulation material using the insulation constantan 1mm × side's 1mm line
On shape ware skeleton, the grading resistance body two using the insulation constantan 1.2mm × side's 1.2mm line as resistance insulation material around
In on hollow cylinder ware skeleton.
A kind of production method of collecting well group cathodic protection direct current distributor, includes the following steps：
Step 1）From hollow cylinder ceramic skeleton one end, using the insulation constantan 1mm × side 1mm line 8.3m in hollow cylinder
Ware skeleton tightens 80 circle of winding, reserves 50mm, as grading resistance body one, then using insulation constantan 1.2mm × 1.2mm
50mm is reserved as grading resistance device two before and after 120 circle of winding on hollow cylinder ware skeleton for 18 meters of square line use general-purpose
It is 4 Ω that table, which measures one resistance value of grading resistance body, and two resistance value of grading resistance device is 6 Ω, and extra insulation constantan side line is cut out
Fall, grading resistance device one is connected with two resistance of grading resistance device with connector, fixed stator one and grading resistance body one are fixed and determined
Piece two and grading resistance body use Wave crest Welding respectively, fixed movable plate and rotation movable plate with rotate axis connection；
Step 2）Grading resistance device one and grading resistance device two are wrapped in hollow cylinder ceramic skeleton outer surface, bottom surface and interior
High-temperature-resistant insulating paint is coated on the resistance insulation material on surface and is bonded on hollow cylinder ceramic skeleton, in oven
It is taken out after simply connected section rotary rotary rheostat is toasted 24 hours in 200 DEG C, then grading resistance body one, grading resistance body two
It is wrapped in the resistance insulation material surface paint at the top of hollow cylinder ceramic skeleton to be scraped with planning machine, is convenient for blade contact carbon brush
With the contact of constantan side's line.Measuring resistance value in fixed stator one and fixed stator two with multimeter is 10 Ω, completes simply connected
The production of 800W/10 Ω section rotary rotary rheostat；
Step 3）The duplex that two simply connected 800W/10 Ω section rotary rotary rheostat parallel connections are constituted, corresponding fixation are fixed
Piece one, fixed movable plate and fixed stator two-way are crossed after shorting stub is connected, with multimeter in fixed stator one and the fixed survey of stator two
Amount resistance value is 5 Ω, can be fabricated to 1600W/5 Ω resistance value section rotary rotary rheostat.
A kind of collecting well group casing cathode protecting process uses collecting well group cathodic protection direct current distributor, cluster well
One end of multiple duplex resistance value section rotary rotary rheostats of group cathodic protection direct current distributor and cathodic protection DC power supply
Cathode connection, the other end is separately connected corresponding oil well casing or well casing, the anode of cathodic protection DC power supply with it is deep
Well ground connection anode connects and composes protective loop, by collecting well group cathodic protection direct current distributor in collecting well group cathodic protection
Potential difference between balance well in the process, provides normal cathodic protection current to collecting well group casing, so that set is in control protection will not
Corrode.
The beneficial effects of the invention are as follows：
This collecting well group cathodic protection direct current distributor provided by the invention, is replaced not with resistance value section rotary rotary rheostat
It is segmented conventional rotary rheostat, original more than 120 kilograms of cathodic protection DC distribution frames are become into more than 30 kilograms of cathodic protections
Direct current distributor.With small in size, light-weight, direct current distribution power, consumption energy is small greatly, in itself, and resistance value adjustable range is big,
The features such as the operation is stable.It ensure that potential difference between playing balance well during collecting well group cathodic protection, give collecting well group
Casing provides normal cathodic protection current, and set, which will be in control protection, to be corroded.
It is described in further details below in conjunction with attached drawing.
Detailed description of the invention
Fig. 1 is a kind of implementation diagram of simply connected section rotary rotary rheostat；
Fig. 2 is the top view of duplex section rotary rotary rheostat；
Fig. 3 is collecting well group casing principle of cathodic protection schematic diagram of the present invention.
In figure：1, fixed stator one；2, fixed movable plate；3, fixed stator two；4, grading resistance body one；5, connector；6, knife
Piece contact；7, movable plate is rotated；8, grading resistance body two；9, rotation axis；10, hollow cylinder ceramic skeleton；11, oil well casing；
12, well casing；13, insulating flange；14, metal protection case.
Specific embodiment
Embodiment 1：
A kind of collecting well group cathodic protection direct current distributor is present embodiments provided, including the segmentation of multiple duplex resistance values is rotatably
One end of rheostat, each duplex resistance value section rotary rotary rheostat is connect with the cathode of cathodic protection DC power supply, the other end
It is separately connected corresponding oil well casing 11 or well casing 12；
Duplex resistance value section rotary rotary rheostat is made of two simply connected section rotary rotary rheostat parallel connections, the duplex resistance value point
The rotary rheostat of section is externally provided with metal protection case 14.
14 shell of metal protection case, prevents dust from falling on resistor body, influence 6 carbon brush of blade contact contact, guarantee electric current from
Fixed movable plate 2 stablizes output.9 front end of rotation axis is equipped with adjusting handle, facilitates and adjusts variable resistance value.
The present invention replaces not being segmented conventional rotary rheostat, direct current distribution power using resistance value section rotary rotary rheostat
Greatly, consumption energy itself is small, and resistance value adjustable range is big, the operation is stable, while greatly reducing volume and weight.It ensure that in clump formula
Play potential difference between balance well during well group cathodic protection.Normal cathodic protection current is provided to collecting well group casing,
So that set is in control protection will not corrode.
Embodiment 2：
On the basis of embodiment 1, a kind of collecting well group cathodic protection direct current distributor, the simply connected are present embodiments provided
Section rotary rotary rheostat includes fixed stator 1, fixed movable plate 2, fixed stator 23, grading resistance body 1, blade contact
6, movable plate 7, grading resistance body 28, rotation axis 9 and hollow cylinder ceramic skeleton 10, the hollow cylinder ceramics bone are rotated
Frame 10 is non-close shape；
The fixed stator 1 and fixed stator 23 are fixedly arranged on two notches on 10 top of hollow cylinder ceramic skeleton respectively
Place, the rotation axis 9 are set to the top the center point of hollow cylinder ceramic skeleton 10, and the fixed movable plate 2 and rotation movable plate 7 are equal
It is connect with rotation axis 9, the grading resistance body 1 and grading resistance body 28 are wrapped in open circles using resistance insulation material
Cylindrical ceramic skeleton 10, and the two is covered with hollow cylinder ceramic skeleton 10, the grading resistance body 1 and grading resistance body two
It is connected between 8 by connector 5；
The grading resistance body 1 and grading resistance body 28 are located at the resistance insulation material at 10 top of hollow cylinder ceramic skeleton
Expect surface conductance, the blade contact 6 of rotation 7 endpoint of movable plate and the conductive portions contact.
Simply connected section rotary rotary rheostat is as shown in Figure 1.Two simply connected section rotary rotary rheostats pass through corresponding fixation
Stator 1, fixed movable plate 2, fixed stator 23 constitute duplex resistance value section rotary rotary rheostat using in parallel after short-term connection.
In the present embodiment, the resistance insulation material is insulation constantan side's line, the grading resistance body 1 and segmentation electricity
The non-conductive section of resistance body 28 is fixed on hollow cylinder ceramic skeleton 10 by high-temperature insulation material.
Embodiment 3：
Present embodiments provide a kind of collecting well group cathodic protection direct current distributor（With duplex 1600W/5 Ω resistance value section rotary
For rotary rheostat）Production method, include the following steps：
Step 1）From 10 one end of hollow cylinder ceramic skeleton, using the insulation constantan 1mm × side 1mm line 8.3m in hollow cylinder
Shape ware skeleton tightens 80 circle of winding, reserves 50mm, as grading resistance body 1, then using insulation constantan 1.2mm ×
18 meters of the side's 1.2mm line are reserved 50mm before and after 120 circle of winding on hollow cylinder ware skeleton, as grading resistance device two,
It is 4 Ω with multimeter measurement one 4 resistance value of grading resistance body, two resistance value of grading resistance device is 6 Ω, by extra insulation constantan
Square line is dismissed, and grading resistance device one and two resistance connector 5 of grading resistance device are connected, fixed stator 1 and grading resistance body
One 4, fixed stator 23 and grading resistance body use Wave crest Welding respectively, and fixed movable plate 2 and rotation movable plate 7 connect with rotation axis 9
It connects；
Step 2）By grading resistance device one and grading resistance device two be wrapped in 10 outer surface of hollow cylinder ceramic skeleton, bottom surface and
High-temperature-resistant insulating paint is coated on the resistance insulation material of inner surface and is bonded on hollow cylinder ceramic skeleton 10, roasting
It is taken out after simply connected section rotary rotary rheostat is toasted 24 hours in 200 DEG C of case, then grading resistance body 1, grading resistance
The resistance insulation material surface paint that body 28 is wrapped in 10 top of hollow cylinder ceramic skeleton is scraped with planning machine, is convenient for blade
The contact of contact 6 carbon brush and constantan side's line.Measuring resistance value in fixed stator 1 and fixed stator 23 with multimeter is 10 Ω,
Complete the production of simply connected 800W/10 Ω section rotary rotary rheostat；
Step 3）The duplex that two simply connected 800W/10 Ω section rotary rotary rheostat parallel connections are constituted, corresponding fixation are fixed
Piece 1, fixed movable plate 2 and fixed stator 23 pass through shorting stub（3 4mm2Copper conductor）After being connected, with multimeter fixed fixed
It is 5 Ω that piece 1 and fixed stator 23, which measure resistance value, can be fabricated to 1600W/5 Ω resistance value section rotary rotary rheostat.It is double
It is as shown in Figure 2 to join 1600W/5 Ω resistance value section rotary rotary rheostat.
Wherein, in order to reduce volume, increase power, it is rotary to make simply connected 800W/10 Ω segmentation using grading resistance system
Rheostat.According to formula Power value：P=I2R, in formula：P is power（W）；I is the electric current by resistor body（A）；R is resistor body
Resistance value（Ω）.800= I2× 10, rated current I=9A are provided for a long term 4A electric current for live Casing Failure 12, only right
New well starts to lead to 2 hour 5A drifting electric currents, and the usual resistance value of Casing Failure 12 is（The Ω of 1 Ω~4）, part after usually only using
Resistance value, seldom with preceding partial ohmic value, resistor body grouping is may be implemented in simply connected 800W/10 Ω section rotary rotary rheostat.
Since present cathodic protection digitizes long-range monitoring cabinet, original three cabinet bodies are become into a cabinet body, temperature in cabinet body
Degree is no more than 40 DEG C, and simply connected 800W/10 Ω section rotary rotary rheostat surface temperature is no more than 50 DEG C, so simply connected
800W/10 Ω section rotary rotary rheostat usually passes through electric current cannot be too big.Copper wire based on practical experience：1mm27A can be passed through
Electric current, 1.2mm28A electric current, 1.4mm can be passed through2Can be by 9A electric current, i.e. diameter is that 1.13mm round wires can be by 7A electricity
Stream, diameter are that 1.24mm round wires can be that 1.36mm round wires can pass through 9A electric current by 8A electric current, diameter.Use side length for
The side's 1mm line can by 7A electric current, side length be the side's 1.1mm line can by 8A electric current, side length is that the side's 1.2mm line can pass through
9A electric current.
Constantan is the electric resistance alloy as the main component with cupro-nickel, feature：It is wider to make with lower temperature-coefficient of electrical resistance
Use temperature range（480 DEG C or less）, processing performance is good, has good welding performance.For the constantan-made resistances of sectional uniform
Body, resistance value R=ρ L/A (Ω), in formula：ρ is the resistivity of resistance insulation material（Ω·m）；L is the length of resistor body（m）；A
For the sectional area of resistor body（mm2）.Resistance value is 10 Ω, and preceding resistor body 1 designs 4 Ω, and rear resistor body 2 designs 6 Ω.Constantan-made resistances
Rate ρ=0.48 ± 0.03m/mm2, the calculating of one 4 resistance insulation length of material of grading resistance body：4=0.48L1/A1, L1=4A1/0.48=
4×1/0.48=8.3m；28 resistance insulation length of material of grading resistance body calculates：6=0.48L1/A1, L1=6A1/0.48=6×
1.44/0.48=18m.One 4 resistance insulation material of grading resistance body is using the insulation constantan 1mm × side 1mm line 8.3m in hollow cylinder
80 circle of winding on shape ware skeleton, resistance value are 4 Ω, and 28 resistance insulation material of grading resistance body is using insulation constantan 1.2mm
18 meters of the × side 1.2mm line 120 circles of winding on hollow cylinder ware skeleton, resistance value are 6 Ω, and total resistance value is 10 Ω,
Meet and usually lead to 4A electric current to oil-water well, maximum can be that 9A is required by electric current, wherein account for power and be for one 4 points of grading resistance body
320W, it is 480W that 28 points of grading resistance body, which account for power, and power becomes 800W after series connection, and resistance is 10 Ω.By two 800W/10
The section rotary rotary rheostat parallel connection of Ω simply connected is at being 1600W/5 Ω resistance value section rotary rotary rheostat after duplex, in surface temperature
When degree is no more than 50 DEG C, 18A electric current can be passed through.
In order to which grading resistance body 1 and grading resistance body 28 facilitate connection by connector 5, by grading resistance body 1 and divide
Insulated paint is destroyed with sandpaper on section resistor body 28, since constantan has good welding performance, wider use temperature range
（480 DEG C or less）, it is welded with wave-soldering.
In order to reduce the area of occupancy, hollow cylinder ceramic skeleton 10 is taken, uses outer diameter for 100mm, internal diameter is
60mm, thickness 80mm.Anti-moisture performance is good, and stable working performance, radiating rate are fast, good appearance is novel.Resistance insulation material removes
High temperature resistant enamel paint is coated with outside contact surface to be bonded on pottery skeleton.
To obtain the resistance value of variation, change collecting well group cathodic protection is straight for sliding of the rotation axis 9 with cutting blade contact 6
Stream distribution electric current, balances potential difference between each well, so that collecting well group set is in control best protection current potential, prevent electrochemical corrosion.
Add 0~60V between the fixation stator 1 and fixed stator 23 of simply connected 800W/10 Ω section rotary rotary rheostat
Voltage, electric current change from 0~12A.Between fixed stator 1 and fixed stator 23 plus 60V voltage, rotation rotation axis 9 are sliding
Dynamic stroke is 0~320 °, voltage 0~60V consecutive variations between fixed stator 1 and fixed stator 23, repeatedly at 0~320 °
It rotates rheostat and controls rotation axis 9, rheostat should be without visible damage, section rotary rotary rheostat surface temperature after being powered 24 hours
No more than 50 DEG C.Then multiple duplex 1600W/5 Ω resistance value section rotary rotary rheostats are mounted on cathodic protection digitlization prison
It controls just enough at a high power DC distributor in cabinet on cabinet.There is the device small in size, light-weight, power to disappear greatly, in itself
The features such as energy consumption is small, and adjustable range is big, the operation is stable.
Embodiment 4：
A kind of collecting well group casing cathode protecting process is present embodiments provided, is distributed and is filled using collecting well group cathodic protection direct current
It sets, one end of multiple duplex resistance value section rotary rotary rheostats of collecting well group cathodic protection direct current distributor and cathodic protection
The cathode of DC power supply connects, and the other end is separately connected corresponding oil well casing 11 or well casing 12, cathodic protection direct current
Anode and the deep-well grounding anode in source connect and compose protective loop, by collecting well group cathodic protection direct current distributor in clump formula
Potential difference between balance well, provides normal cathodic protection current to collecting well group casing, makes casing during well group cathodic protection
Obtaining protection will not corrode.
To adapt to adverse circumstances outside oil field, increasing operational reliability and reducing cost, collecting well group cathodic protection technique
It takes using well group as unit, establishes cathodic protection system by emphasis of casing.This principle is realized in collecting well group cathodic protection
Process is that DC power cathode and each individual well casing connection, DC power anode is connect with deep-well grounding anode, to constitute guarantor
Protect circuit.The effect of direct current distributor mainly controls each individual well output electric current, balances potential difference between well.As shown in Figure 3.Insulation method
13 effect of orchid mainly prevents the interference corrosion of the cathodically protected system stray electrical current of the unprotected pipeline in the other side.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.The component that embodiment does not describe in detail
With the well-known components and common structure or conventional means of the structure category industry, do not describe one by one here.
Claims (10)
1. a kind of collecting well group cathodic protection direct current distributor, it is characterised in that：It is rotary including the segmentation of multiple duplex resistance values
One end of rheostat, each duplex resistance value section rotary rotary rheostat is connect with the cathode of cathodic protection DC power supply, the other end
It is separately connected corresponding oil well casing（11）Or well casing（12）；
Duplex resistance value section rotary rotary rheostat is made of two simply connected section rotary rotary rheostat parallel connections, the duplex resistance value point
The rotary rheostat of section is externally provided with metal protection case（14）.
2. a kind of collecting well group cathodic protection direct current distributor according to claim 1, it is characterised in that：The simply connected
Section rotary rotary rheostat includes fixed stator one（1）, fixed movable plate（2）, fixed stator two（3）, grading resistance body one（4）,
Blade contact（6）, rotation movable plate（7）, grading resistance body two（8）, rotation axis（9）With hollow cylinder ceramic skeleton（10）, institute
State hollow cylinder ceramic skeleton（10）For non-close shape；
The fixed stator one（1）With fixed stator two（3）It is fixedly arranged on hollow cylinder ceramic skeleton respectively（10）The two of top
A indentation, there, the rotation axis（9）Set on hollow cylinder ceramic skeleton（10）Top the center point, the fixed movable plate（2）
With rotation movable plate（7）And rotation axis（9）Connection, the grading resistance body one（4）With grading resistance body two（8）Use resistance
Insulating materials is wrapped in hollow cylinder ceramic skeleton（10）, and the two is covered with hollow cylinder ceramic skeleton（10）, described point
Section resistor body one（4）With grading resistance body two（8）Between pass through connector（5）Connection；
The grading resistance body one（4）With grading resistance body two（8）Positioned at hollow cylinder ceramic skeleton（10）The resistance at top
Insulating materials surface conductance, the rotation movable plate（7）The blade contact of endpoint（6）With the resistance insulation scrape face conductive part tap
Touching.
3. a kind of collecting well group cathodic protection direct current distributor according to claim 1, it is characterised in that：Two simply connecteds
Section rotary rotary rheostat passes through corresponding fixed stator one（1）, fixed movable plate（2）, fixed stator two（3）It is connected using short-term
It is in parallel afterwards to constitute duplex resistance value section rotary rotary rheostat.
4. a kind of collecting well group cathodic protection direct current distributor according to claim 2, it is characterised in that：The resistance
Insulating materials is insulation constantan side's line, the grading resistance body one（4）With grading resistance body two（8）Non-conductive section by resistance to
High temperature insulating material is fixed on hollow cylinder ceramic skeleton（10）On.
5. a kind of collecting well group cathodic protection direct current distributor according to claim 1, it is characterised in that：It is described hollow
Cylindrical ceramic skeleton（10）Outer diameter is 100mm, internal diameter 60mm, thickness 80mm.
6. a kind of collecting well group cathodic protection direct current distributor according to claim 1, it is characterised in that：The simply connected
The sliding stroke of section rotary rotary rheostat is 320 ± 5 °.
7. a kind of collecting well group cathodic protection direct current distributor according to claim 2, it is characterised in that：The duplex
Resistance value section rotary rotary rheostat is 1600W/5 Ω, and simply connected section rotary rotary rheostat is 800W/10 Ω.
8. a kind of collecting well group cathodic protection direct current distributor according to claim 2, it is characterised in that：The segmentation
Resistor body one（4）Hollow cylinder ware skeleton is around in as resistance insulation material using the insulation constantan 1mm × side's 1mm line
On, the grading resistance body two（8）Open circles are around in as resistance insulation material using the insulation constantan 1.2mm × side's 1.2mm line
On cylindrical ceramic device skeleton.
9. a kind of production method of collecting well group cathodic protection direct current distributor according to claim 7, feature exist
In including the following steps：
Step 1）From hollow cylinder ceramic skeleton（10）One end is risen, using the insulation constantan 1mm × side 1mm line 8.3m in open circles
Cylindrical ceramic device skeleton tightens 80 circle of winding, 50mm is reserved, as grading resistance body one（4）, then using insulation constantan 1.2mm
18 meters of the × side 1.2mm line are reserved 50mm before and after 120 circle of winding on hollow cylinder ware skeleton, as grading resistance device
Two, grading resistance body one is measured with multimeter（4）Resistance value is 4 Ω, and two resistance value of grading resistance device is 6 Ω, will be extra exhausted
Edge constantan side line is dismissed, by two resistance connector of grading resistance device one and grading resistance device（5）Connection, fixed stator one（1）With
Grading resistance body one（4）, fixed stator two（3）Wave crest Welding, fixed movable plate are used respectively with grading resistance body（2）It is dynamic with rotation
Piece（7）And rotation axis（9）Connection；
Step 2）Grading resistance device one and grading resistance device two are wrapped in hollow cylinder ceramic skeleton（10）Outer surface, bottom surface
Be coated with high-temperature-resistant insulating paint on the resistance insulation material of inner surface and be bonded in hollow cylinder ceramic skeleton（10）On,
It is taken out after simply connected section rotary rotary rheostat is toasted 24 hours in 200 DEG C of oven, then grading resistance body one（4）, point
Section resistor body two（8）It is wrapped in hollow cylinder ceramic skeleton（10）The resistance insulation material surface paint power blader of scraping at top
Light is convenient for blade contact（6）The contact of carbon brush and constantan side's line, with multimeter in fixed stator one（1）With fixed stator two（3）
Measurement resistance value is 10 Ω, completes the production of simply connected 800W/10 Ω section rotary rotary rheostat；
Step 3）The duplex that two simply connected 800W/10 Ω section rotary rotary rheostat parallel connections are constituted, corresponding fixation are fixed
Piece one（1）, fixed movable plate（2）With fixed stator two（3）After being connected by shorting stub, with multimeter in fixed stator one（1）With
Fixed stator two（3）Measurement resistance value is 5 Ω, can be fabricated to 1600W/5 Ω resistance value section rotary rotary rheostat.
10. a kind of collecting well group casing cathode protecting process uses collecting well group cathodic protection direct current as claimed in claim 2 point
With device, it is characterised in that：Multiple duplex resistance value section rotary rotary rheostats of collecting well group cathodic protection direct current distributor
One end connect with the cathode of cathodic protection DC power supply, the other end is separately connected corresponding oil well casing（11）Or well casing
（12）, cathodic protection DC power supply anode with deep-well grounding anode connect and compose protective loop, protected by collecting well group cathode
Shield direct current distributor balances potential difference between well during collecting well group cathodic protection, provides to collecting well group casing normal
Cathodic protection current makes oil well casing（11）Or well casing（12）Obtaining protection will not corrode.
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| CN109616842A (en) * | 2019-01-07 | 2019-04-12 | 郑州云海信息技术有限公司 | an impedance connector |
| CN111926336A (en) * | 2020-08-07 | 2020-11-13 | 中国石油天然气集团有限公司 | Flange type multi-lead deep well anode device and manufacturing method |
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| CN108823575B (en) | 2023-08-18 |
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