WO2015194992A1 - Unit for adjusting current of system for cathodic corrosion protection of underground metal objects - Google Patents
Unit for adjusting current of system for cathodic corrosion protection of underground metal objects Download PDFInfo
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- WO2015194992A1 WO2015194992A1 PCT/RU2015/000269 RU2015000269W WO2015194992A1 WO 2015194992 A1 WO2015194992 A1 WO 2015194992A1 RU 2015000269 W RU2015000269 W RU 2015000269W WO 2015194992 A1 WO2015194992 A1 WO 2015194992A1
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- control unit
- current
- semiconductor devices
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- metal objects
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Classifications
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- 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
- C23F13/04—Controlling or regulating desired parameters
Definitions
- the technical solution relates to the electrochemical protection of metal objects from corrosion and can be used to distribute and regulate the current when protecting several underground utilities, located in close proximity to each other, from one converter.
- the product can be used on multi-line pipelines, for the protection of looping, on the industrial sites of compressor stations and other facilities.
- a known device for controlling the current of the system of cathodic protection against corrosion of underground metal objects for example, n pipelines, containing n controlled direct current sources, grounding, n control units and a reference electrode, characterized in that, in order to increase the efficiency of protection by maintaining the potential difference between the protected pipelines equal to zero, the inputs of each of (n - 1) control units are connected to the cathode terminals of adjacent current sources, and one of the control units is made in the form of a well connected source of setpoint and integrator, and a reference electrode is connected to the direct input of the integrator. (SU 656374 A1, 01/27/2000).
- the disadvantage of this device is the need to use many DC sources and control units, which negatively affects the cost of the device and the convenience of its operation.
- Cathodic protection current control unit contains diodes, measuring shunts, a rheostat and elements for adjusting the resistance of the rheostat, while adjusting the current value is performed by switching jumpers between the elements for adjusting the resistance of the rheostat (see Internet: http: //www.texnotek om / produ ⁇
- the disadvantages of this device is that the current adjustment is stepwise, and not smooth, while the current adjustment process involves the need to manipulate the tool when moving the jumpers (unscrewing the nut / moving the jumper / tightening), which can lead to loss of these parts when rearrangement and increases the complexity of maintenance.
- the technical result of the claimed technical solution is to increase reliability, as well as increase the operational characteristics of the device.
- a current control unit for cathodic protection of underground metal objects from corrosion comprising a housing on which there are at least two contact clamps for connecting cables, measuring shunts and means for adjusting the current magnitude, and inside the housing are diodes connected to contact clamps for connecting cables, and semiconductor devices connected to diodes, as well as a control unit for semiconductor devices, while the contact jaws s cable connection conductors connected to the measuring shunt, and a current value adjustment means are connected to the control unit semiconductor devices.
- the diodes are semiconductor; semiconductor devices are transistors or thyristors; the unit is equipped with a cooling radiator; the unit is equipped with an ammeter, which can have a digital display.
- FIG. 1 shows a front view of a current control unit of a cathodic protection system
- FIG. 2 shows a connection diagram of a current control unit of a cathodic protection system in cathodic protection systems.
- the current control unit of the cathodic protection system of underground metal objects from corrosion includes a housing 1 (Fig. 1), on which are located contact clips 2 for connecting cables (not shown), measuring shunts 3 and means 4 for adjusting the current value. Inside the housing 1 there are diodes 5 connected to the contact clamps 2 for connecting cables, and semiconductor devices 6 connected to the diodes 5, as well as the control unit 7 of the semiconductor devices 6.
- the control unit 7 is connected to the semiconductor devices 6 and provides current control due to voltage, which is supplied to one of the electrodes of each of the devices 6.
- Contact clamps 2 for connecting cables are connected by conductors 8 to measuring shunts 3, and means 4 for adjusting the current value are connected to block 7 semiconductor device control 6.
- the current control unit of the cathodic protection system can be equipped with a cooling radiator 9, as well as an ammeter 10, which can be made in the form of an analog indicator or have a digital display 11.
- the current control unit of the cathodic protection system of underground metal objects from corrosion works as follows. Two or more underground metal objects 12 are connected to the negative pole of the cathode station 13 through the current control unit of the cathodic protection system, each of the underground metal objects 12 being closed to a separate contact terminal 2.
- the current control unit 1 of the cathodic protection system is connected through the positive pole of the cathode station to anode earthing switch 14.
- Power is supplied to the cathodic station 13, which starts to operate and through the current control unit of the cathodic protection system ensures the supply and distribution of 12 protective currents along the threads of underground metal objects, under the influence of which, as a result of the transfer of anode processes causing corrosion to the ground electrode, the underground communications are protected from corrosion and damage, as a result of which they remain suitable for use for a longer time.
- measuring shunts 3 are used, to which measuring devices are connected.
- the current magnitude is adjusted by means of semiconductor devices 6 through the control unit 7 of the adjustment means 4, which are buttons, wheels or other known means, due to which the current strength changes.
- Indicators of the magnitude of the current can also be controlled by an ammeter 10, which can be performed either in a traditional analog form or equipped with a digital display 11.
- the adjustment of the current value occurs smoothly in the entire range from 0 to 50 amperes, which is difficult to provide for the mechanical adjustment of the current value.
Abstract
The technical solution relates to electrochemically protecting metal objects against corrosion and can be used for distributing and regulating current when protecting a plurality of underground utilities installations, located in direct proximity of one another, against a single transformer. The technical result of the claimed technical solution consists in increasing the reliability and performance characteristics of the device. In order to achieve the technical solution, a unit is proposed for adjusting the current of a system for the cathodic corrosion protection of underground metal objects, said unit containing a housing, on which housing are positioned at least two contact clamps for connecting cables, measurement shunts and means for adjusting current magnitude, and in which housing are provided diodes which are connected to the contact clamps for connecting cables, and, connected to the diodes, semiconductor devices, and also a unit for controlling the semiconductor devices, wherein the contact clamps for connecting cables are connected by means of conductors to the measurement shunts, and the means for adjusting the current magnitude are connected to the unit for controlling the semiconductor devices.
Description
БЛОК РЕГУЛИРОВАНИЯ ТОКА СИСТЕМЫ КАТОДНОЙ ЗАЩИТЫ ПОДЗЕМНЫХ МЕТАЛЛИЧЕСКИХ ОБЪЕКТОВ ОТ CATHODIC PROTECTION SYSTEM CURRENT CONTROL UNIT FOR UNDERGROUND METAL OBJECTS FROM
КОРРОЗИИ. CORROSION.
Техническое решение относится к электрохимической защите металлических объектов от коррозии и может быть использована для распределения и регулирования тока при защите нескольких сооружений подземных коммуникаций, расположенных в непосредственной близости друг от друга, от одного преобразователя. Изделие может быть использовано на многониточных трубопроводах, для защиты лупингов, на промплощадках компрессорных станций и других объектах. The technical solution relates to the electrochemical protection of metal objects from corrosion and can be used to distribute and regulate the current when protecting several underground utilities, located in close proximity to each other, from one converter. The product can be used on multi-line pipelines, for the protection of looping, on the industrial sites of compressor stations and other facilities.
Известен устройство регулирования тока системы катодной защиты от коррозии подземных металлических объектов, например п трубопроводов, содержащее п управляемых источников постоянного тока, заземление, п блоков управления и электрод сравнения, отличающийся тем, что, с целью повышения эффективности защиты путем поддержания разности потенциалов между защищаемыми трубопроводами, равной нулю, входы каждого из (п - 1) блоков управления подключены к катодным выводам соседних источников тока, а один из блоков управления выполнен в виде последовательно соединенных источника уставки и интегратора, причем на прямой вход интегратора подключен электрод сравнения. (SU 656374 А1, 27.01.2000). Недостатком данного устройства является необходимость использования множества источников постоянного тока и блоков управления, что отрицательно сказывается на себестоимости устройства и удобстве его эксплуатации. A known device for controlling the current of the system of cathodic protection against corrosion of underground metal objects, for example, n pipelines, containing n controlled direct current sources, grounding, n control units and a reference electrode, characterized in that, in order to increase the efficiency of protection by maintaining the potential difference between the protected pipelines equal to zero, the inputs of each of (n - 1) control units are connected to the cathode terminals of adjacent current sources, and one of the control units is made in the form of a well connected source of setpoint and integrator, and a reference electrode is connected to the direct input of the integrator. (SU 656374 A1, 01/27/2000). The disadvantage of this device is the need to use many DC sources and control units, which negatively affects the cost of the device and the convenience of its operation.
Наиболее близким к заявленному техническому решению является блок регулирования тока системы катодной защиты, содержащий плату, выполненную из стеклотекстолита на который установлены элементы электрической схемы. Блок регулирования тока системы катодной защиты
содержит диоды, измерительные шунты, реостат и элементы регулировки сопротивления реостата, при этом регулировка величины тока выполняется путем переключения перемычек между элементами регулировки сопротивления реостата (см. Интернет: http://www.texnotek om/produ^ Closest to the claimed technical solution is the current control unit of the cathodic protection system, containing a board made of fiberglass on which elements of the electrical circuit are installed. Cathodic protection current control unit contains diodes, measuring shunts, a rheostat and elements for adjusting the resistance of the rheostat, while adjusting the current value is performed by switching jumpers between the elements for adjusting the resistance of the rheostat (see Internet: http: //www.texnotek om / produ ^
sovmestnoj-zashhity-bsz, 2011 г.). sovmestnoj-zashhity-bsz, 2011).
Недостатками данного устройства является то, что регулировка тока происходит ступенчато, а не плавно, при этом в процесс регулировки величины тока сопряжен с необходимостью манипуляций с инструментом при перестановке перемычек (откручивание гайки / перестановка перемычки / закручивание), что может привести к утере данных деталей при перестановке и повышает трудоемкость обслуживания. The disadvantages of this device is that the current adjustment is stepwise, and not smooth, while the current adjustment process involves the need to manipulate the tool when moving the jumpers (unscrewing the nut / moving the jumper / tightening), which can lead to loss of these parts when rearrangement and increases the complexity of maintenance.
Техническим результатом заявленного технического решения является повышение надежности, а также повышение эксплуатационных характеристик устройства. The technical result of the claimed technical solution is to increase reliability, as well as increase the operational characteristics of the device.
Для достижения технического результата предлагается блок регулирования тока системы катодной защиты подземных металлических объектов от коррозии, содержащий корпус, на котором расположены по крайней мере два контактных зажима для подключения кабелей, измерительные шунты и средства регулировки величины тока, а внутри корпуса расположены диоды, соединенные с контактными зажимами для подключения кабелей, и соединенные с диодами полупроводниковые приборы, а также и блок управления полупроводниковыми приборами, при этом контактные зажимы для подключения кабелей соединены проводниками с измерительными шунтами, а средства регулировки величины тока соединены с блоком управления полупроводниковыми приборами. To achieve a technical result, a current control unit for cathodic protection of underground metal objects from corrosion is provided, comprising a housing on which there are at least two contact clamps for connecting cables, measuring shunts and means for adjusting the current magnitude, and inside the housing are diodes connected to contact clamps for connecting cables, and semiconductor devices connected to diodes, as well as a control unit for semiconductor devices, while the contact jaws s cable connection conductors connected to the measuring shunt, and a current value adjustment means are connected to the control unit semiconductor devices.
В отдельных вариантах выполнения блока регулирования тока системы катодной защиты диоды выполнены полупроводниковыми;
полупроводниковые приборы представляют собой транзисторы или тиристоры; блок снабжен радиатором охлаждения; блок снабжен амперметром, который может иметь цифровое табло индикации. In certain embodiments of the current control unit of the cathodic protection system, the diodes are semiconductor; semiconductor devices are transistors or thyristors; the unit is equipped with a cooling radiator; the unit is equipped with an ammeter, which can have a digital display.
Представленное техническое решение иллюстрируется чертежами. На фиг. 1 показан вид впереди на блок регулирования тока системы катодной защиты; The presented technical solution is illustrated by drawings. In FIG. 1 shows a front view of a current control unit of a cathodic protection system;
на фиг. 2 показана схема подключения блока регулирования тока системы катодной защиты в системах катодной защиты. in FIG. 2 shows a connection diagram of a current control unit of a cathodic protection system in cathodic protection systems.
Блок регулирования тока системы катодной защиты подземных металлических объектов от коррозии содержит корпус 1 (фиг. 1), на котором расположены контактные зажимы 2 для подключения кабелей (не показаны), измерительные шунты 3 и средства 4 регулировки величины тока. Внутри корпуса 1 расположены диоды 5, соединенные с контактными зажимами 2 для подключения кабелей, и соединенные с диодами 5 полупроводниковые приборы 6, а также и блок 7 управления полупроводниковыми приборами 6. Блок 7 управления соединен с полупроводниковыми приборами 6 и обеспечивает регулировку силы тока за счет напряжения, которое подается на один из электродов каждого из приборов 6. Контактные зажимы 2 для подключения кабелей соединены проводниками 8 с измерительными шунтами 3, а средства 4 регулировки величины тока соединены с блоком 7 управления полупроводниковыми приборами 6. The current control unit of the cathodic protection system of underground metal objects from corrosion includes a housing 1 (Fig. 1), on which are located contact clips 2 for connecting cables (not shown), measuring shunts 3 and means 4 for adjusting the current value. Inside the housing 1 there are diodes 5 connected to the contact clamps 2 for connecting cables, and semiconductor devices 6 connected to the diodes 5, as well as the control unit 7 of the semiconductor devices 6. The control unit 7 is connected to the semiconductor devices 6 and provides current control due to voltage, which is supplied to one of the electrodes of each of the devices 6. Contact clamps 2 for connecting cables are connected by conductors 8 to measuring shunts 3, and means 4 for adjusting the current value are connected to block 7 semiconductor device control 6.
Блок регулирования тока системы катодной защиты может быть снабжен радиатором 9 охлаждения, а также амперметром 10, который может быть выполнен в виде аналогового индикатора или иметь цифровое табло 11 индикации. The current control unit of the cathodic protection system can be equipped with a cooling radiator 9, as well as an ammeter 10, which can be made in the form of an analog indicator or have a digital display 11.
Работает блок регулирования тока системы катодной защиты подземных металлических объектов от коррозии следующим образом.
Два или более подземных металлических объектов 12 подсоединяют к отрицательному полюсу катодной станции 13 через блок регулирования тока системы катодной защиты, причем каждый из подземных металлических объектов 12 замыкается на отдельный контактный зажим 2. Блок 1 регулирования тока системы катодной защиты соединяется через положительный полюс катодной станции с анодным заземлителем 14. The current control unit of the cathodic protection system of underground metal objects from corrosion works as follows. Two or more underground metal objects 12 are connected to the negative pole of the cathode station 13 through the current control unit of the cathodic protection system, each of the underground metal objects 12 being closed to a separate contact terminal 2. The current control unit 1 of the cathodic protection system is connected through the positive pole of the cathode station to anode earthing switch 14.
Подают питание на катодную станцию 13, которая начинает работать и через блок регулирования тока системы катодной защиты обеспечивает подачу и распределение по ниткам подземных металлических объектов 12 защитных токов, под действием которых, в результате переноса анодных процессов обусловливающих коррозию на заземлитель, подземные коммуникации защищаются от коррозии и повреждений, в результате чего они сохраняются пригодными для эксплуатации более длительное время. Power is supplied to the cathodic station 13, which starts to operate and through the current control unit of the cathodic protection system ensures the supply and distribution of 12 protective currents along the threads of underground metal objects, under the influence of which, as a result of the transfer of anode processes causing corrosion to the ground electrode, the underground communications are protected from corrosion and damage, as a result of which they remain suitable for use for a longer time.
Для контроля величины подаваемого тока используются измерительные шунты 3, к которым подсоединяются измерительные приборы. Регулировка величины тока осуществляется посредством полупроводниковых приборов 6 через блок 7 управления средствами 4 регулировки, которые представляют собой кнопки, колесики или другие известные средства, за счет которых изменяется сила тока. Показатели величины тока также могут контролироваться амперметром 10, который может быть выполнен, как в традиционном аналоговом виде, так и оснащенным цифровым табло 11 индикации. To control the magnitude of the supplied current, measuring shunts 3 are used, to which measuring devices are connected. The current magnitude is adjusted by means of semiconductor devices 6 through the control unit 7 of the adjustment means 4, which are buttons, wheels or other known means, due to which the current strength changes. Indicators of the magnitude of the current can also be controlled by an ammeter 10, which can be performed either in a traditional analog form or equipped with a digital display 11.
За счет использования полупроводниковых приборов 6 менять сопротивление возможно не только с помощью механического воздействия, но и посредством регулировки напряжения, которое подается на один из электродов прибора 6 через блок 7 управления средствами 4 регулировки, что исключает необходимость выполнения оператором более сложных механических операций, чреватых потерей деталей устройства в
результате человеческого фактора, а также облегчает эксплуатацию устройства. Due to the use of semiconductor devices 6, it is possible to change the resistance not only by mechanical action, but also by adjusting the voltage that is supplied to one of the electrodes of the device 6 through the control unit 7 of the adjustment means 4, which eliminates the need for the operator to perform more complex mechanical operations fraught with loss device details in the result of the human factor, and also facilitates the operation of the device.
Кроме этого регулировка величины тока происходит плавно во всем диапазоне от 0 до 50 ампер, что затруднительно обеспечить при механической регулировке величины тока.
In addition, the adjustment of the current value occurs smoothly in the entire range from 0 to 50 amperes, which is difficult to provide for the mechanical adjustment of the current value.
Claims
1. Блок регулирования тока системы катодной защиты подземных металлических объектов от коррозии, содержащий корпус, на котором расположены по крайней мере два контактных зажима для подключения кабелей, измерительные шунты и средства регулировки величины тока, а внутри корпуса расположены диоды, соединенные с контактными зажимами для подключения кабелей, и соединенные с диодами полупроводниковые приборы, а также и блок управления полупроводниковыми приборами, при этом контактные зажимы для подключения кабелей соединены проводниками с измерительными шунтами, а средства регулировки величины тока соединены с блоком управления полупроводниковыми приборами. 1. The current control unit of the cathodic protection system of underground metal objects from corrosion, comprising a housing on which at least two contact clamps for connecting cables, measuring shunts and means for adjusting the current value are located, and diodes connected to contact clamps for connecting are located inside the housing cables, and semiconductor devices connected to the diodes, as well as the control unit of the semiconductor devices, while the contact clamps for connecting the cables are connected by conductors to measuring shunts, and means for adjusting the magnitude of the current are connected to the control unit of semiconductor devices.
2. Блок регулирования тока по п. 1, отличающийся тем, что полупроводниковые приборы представляют собой транзисторы. 2. The current control unit according to claim 1, characterized in that the semiconductor devices are transistors.
3. Блок регулирования тока по п. 1, отличающийся тем, что полупроводниковые приборы представляют собой тиристоры. 3. The current control unit according to claim 1, characterized in that the semiconductor devices are thyristors.
4. Блок регулирования тока по п. 1 , отличающийся тем, что он снабжен радиатором охлаждения. 4. The current control unit according to claim 1, characterized in that it is equipped with a cooling radiator.
5. Блок регулирования тока по п. 1, отличающийся тем, что он снабжен амперметром. 5. The current control unit according to claim 1, characterized in that it is equipped with an ammeter.
6. Блок регулирования тока по п. 5, отличающийся тем, что амперметр имеет цифровое табло индикации.
6. The current control unit according to claim 5, characterized in that the ammeter has a digital display panel.
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| RU2014124592 | 2014-06-18 | ||
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|---|---|
| WO2015194992A8 (en) | 2016-03-03 |
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