CN206070004U - Device for inhibiting current leakage of cathode protection system - Google Patents
Device for inhibiting current leakage of cathode protection system Download PDFInfo
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- CN206070004U CN206070004U CN201620885550.0U CN201620885550U CN206070004U CN 206070004 U CN206070004 U CN 206070004U CN 201620885550 U CN201620885550 U CN 201620885550U CN 206070004 U CN206070004 U CN 206070004U
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- cathodic protection
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- buried pipeline
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- 230000002401 inhibitory effect Effects 0.000 title 1
- 238000004210 cathodic protection Methods 0.000 claims abstract description 110
- 230000000903 blocking effect Effects 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 83
- 239000007787 solid Substances 0.000 claims description 29
- 230000001629 suppression Effects 0.000 claims description 22
- 239000002689 soil Substances 0.000 abstract description 12
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 abstract description 5
- 230000003068 static effect Effects 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 21
- 230000008569 process Effects 0.000 description 18
- 230000001681 protective effect Effects 0.000 description 12
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- 238000007254 oxidation reaction Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
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- 238000006722 reduction reaction Methods 0.000 description 1
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- Prevention Of Electric Corrosion (AREA)
Abstract
The utility model provides a restrain device that cathodic protection system electric current leaked, include: cathodic protection systems, buried pipelines, surface equipment and switchgear; the cathodic protection system is electrically connected with the buried pipeline, the buried pipeline is electrically connected with the ground equipment, and the ground equipment is grounded through the switch device; the switching device is used for blocking the cathode protection current output by the cathode protection system from being grounded and grounding the lightning or static electricity received by the ground equipment when the lightning or the static electricity is generated. The utility model provides an restrain device that cathodic protection system electric current leaked not only can ensure that cathodic protection system plays the guard action to burying ground pipeline, prevents to bury ground pipeline and suffer soil corrosion, can also play the guard action to ground equipment simultaneously, prevents that ground equipment from suffering static, thunder and lightning infringement.
Description
Technical field
The utility model is related to petroleum gas acquisition technique, more particularly to a kind of suppression cathodic protection system electric current leaks
Device.
Background technology
Electrical instrumentation, automatic control equipment are provided with crude oil, natural gas station or oil and gas pipeline valve chamber along the line
And the process facility such as valve, while being additionally provided with the buried pipeline being connected with above-mentioned process facility.Generally using installation negative electrode
The mode of protection system, cathodic protection system is connected with buried pipeline, the cathodic protection current of the cathodic protection system output
So that buried pipeline surface all becomes cathodic region, it is to avoid buried pipeline surface occurs oxidation reaction so as to which surface occurs reduction
Reaction, so as to avoid buried pipeline from being corroded by soil.
In prior art, in order to ensure natural gas station or electrical instrumentation in oil and gas pipeline valve chamber along the line, from
The process facility such as dynamic control device and valve is needed in the above-mentioned technique being connected with buried pipeline from thunder and lightning, electrostatic interference
The thunder resisting equipments such as lightning rod, lightning conducter and discharging gap are installed on facility, and these process facilities are connected with earthing or grounding means, from
And thunder and lightning, electrostatic current are imported in the earth.That is, now cathodic protection system be connected with buried pipeline, buried pipeline with
Above-mentioned process facility connection, can now cause the cathodic protection current of cathodic protection system output to import by earthing or grounding means big
Ground, so as to cause buried pipeline can not cathodically protected system protection.
Therefore, prior art above-mentioned protects buried pipeline not weather and avoid process facility by lightning damage side processing
Face, the two can not be taken into account.
Utility model content
The utility model provides a kind of device for suppressing cathodic protection system electric current to leak, to solve prior art at place
Manage it is above-mentioned protect buried pipeline not weather and avoid process facility by terms of lightning damage, the two technology that can not be taken into account is asked
Topic.
The device that the suppression cathodic protection system electric current that the utility model is provided leaks, including：It is cathodic protection system, buried
Pipeline, ground installation and switching device；The cathodic protection system is electrically connected with the buried pipeline, the buried pipeline with
The ground installation electrical connection, the ground installation are grounded by the switching device；The switching device, for blocking
State the cathodic protection current ground connection of cathodic protection system output, and the thunder and lightning that receives in the ground installation or produce electrostatic
When, by the thunder and lightning or electrostatic grounding.
Optionally, the switching device is solid decoupling device.
Further, the ground installation includes multiple, and the solid decoupling device is for multiple；Each ground installation is distinguished
It is grounded by a solid decoupling device.
Further, the ground installation include it is multiple, the solid decoupling device be one, described device also includes
Electrical grounding device；The plurality of ground installation is connected with the electrical grounding device, the electrical grounding device
It is grounded by the solid decoupling device.
Optionally, the ground installation includes electrical instrumentation, automatic control equipment, temperature transmitter, pressure inverting
Any one in device, pipeline valve.
Optionally, the amplitude range of the voltage signal of the cathodic protection system output is [- 0.85V, -1.2V]；It is described
The threshold range that solid decoupling device disconnects is [- 2V, 2V].
Optionally, the cathodic protection system is impressed cathodic current protection system or galvanic anode protection protecting system.
Further, temperature measuring device and/or pressure tester, the temperature measuring device are provided with the buried pipeline
And/or pressure tester is connected with the ground installation respectively.
Optionally, the electrical grounding device is electrical grounding terminal device.
What the utility model was provided the suppress device that leaks of cathodic protection system electric current, including it is cathodic protection system, buried
Pipeline, ground installation and switching device；The cathodic protection system is electrically connected with the buried pipeline, the buried pipeline with
The ground installation electrical connection, the ground installation are grounded by the switching device；The switching device, for blocking
State the cathodic protection current ground connection of cathodic protection system output, and the thunder and lightning that receives in the ground installation or produce electrostatic
When, by the thunder and lightning or electrostatic grounding.The device that the suppression cathodic protection system electric current that the utility model is provided leaks, passes through
Switching device is accessed between ground installation and earthing or grounding means, the switching device disconnects condition with one, when its satisfaction disconnects bar
During part, switching device disconnects, and the cathodic protection current of cathodic protection system can be prevented to be grounded；Meanwhile, switching device can be with
The thunder and lightning that at any time ground installation is received or electrostatic grounding, not only can ensure that cathodic protection system is played to buried pipeline
Protective effect, prevents buried pipeline from suffering soil corrosion, while can also play a protective role to ground installation, prevents ground installation
Suffer electrostatic, thunder and lightning infringement.
Description of the drawings
In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, drawings in the following description are
Some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative labor
Under, can be with according to these other accompanying drawings of accompanying drawings acquisition.
The structural representation of the device embodiment one that Fig. 1 leaks for the suppression cathodic protection system electric current that the utility model is provided
Figure；
The structural representation of the device embodiment two that Fig. 2 leaks for the suppression cathodic protection system electric current that the utility model is provided
Figure；
The structural representation of the device embodiment three that Fig. 3 leaks for the suppression cathodic protection system electric current that the utility model is provided
Figure；
The structural representation of the device embodiment four that Fig. 4 leaks for the suppression cathodic protection system electric current that the utility model is provided
Figure.
Description of reference numerals：
1：Cathodic protection system；
2：Buried pipeline；
3：Ground installation；
4：Switching device；
5：Solid decoupling device；
6：Electrical grounding device；
7：Temperature measuring device；
8：Pressure tester.
Specific embodiment
It is to make purpose, technical scheme and the advantage of the utility model embodiment clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, is clearly and completely described to the technical scheme in the utility model embodiment, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than the embodiment of whole.Based on the enforcement in the utility model
Example, the every other embodiment obtained under the premise of creative work is not made by those of ordinary skill in the art are belonged to
The scope of the utility model protection.
Electrical instrumentation equipment, automatic control equipment are provided with crude oil, natural gas station or oil and gas pipeline valve chamber along the line
And the process facility such as valve, while being additionally provided with the buried pipeline being connected with above-mentioned process facility.In order to ensure above-mentioned technique
The safety of facility, prevents which from being disturbed by thunder and lightning, electrostatic, needs to carry out ground protection to above-mentioned process facility, will these works
Skill facility is connected with earthing or grounding means, so as to thunder and lightning, electrostatic current are imported the earth.Meanwhile, in order to prevent connecting with above-mentioned process facility
The buried pipeline for connecing exempts from soil corrosion, need to connect cathodic protection system with buried pipeline by the way of cathodic protection system
Connect so that buried pipeline surface is become cathodic region by the cathodic protection current of the cathodic protection system output, it is to avoid buried pipeline
There is oxidation reaction in surface, so as to avoid buried pipeline from being corroded by soil.When by earthing or grounding means to above-mentioned process facility
When carrying out ground protection, as buried pipeline is connected with above-mentioned process facility, and then cause the cathodic protection on buried pipeline surface
Electric current by earthing or grounding means import the earth, so as to cause buried pipeline can not cathodically protected system protection.That is,
Prior art process it is above-mentioned protect buried pipeline not weather and avoid process facility not by terms of lightning damage, the two can not
Take into account.What the utility model was provided suppresses the device that cathodic protection system electric current leaks that buried pipeline not only can be protected not invaded
Erosion, and process facility can be avoided not damaged by thunder and lightning, electrostatic.
The technical solution of the utility model is described in detail with specifically embodiment below.These are specific below
Embodiment can be combined with each other, for same or analogous concept or process may be repeated no more in certain embodiments.
The structural representation of the device embodiment one that Fig. 1 leaks for the suppression cathodic protection system electric current that the utility model is provided
Figure.As shown in figure 1, the device for suppressing cathodic protection system electric current to leak, including：Cathodic protection system 1, buried pipeline 2,
Ground installation 3 and switching device 4；The cathodic protection system 1 is electrically connected with the buried pipeline 2, the buried pipeline 2 with
The ground installation 3 is electrically connected, and the ground installation 3 is grounded by the switching device 4；
The switching device 4, for blocking the cathodic protection current ground connection of the output of the cathodic protection system 1, and in institute
When stating thunder and lightning or the generation electrostatic that ground installation 3 is received, by the thunder and lightning or electrostatic grounding.
Specifically, cathodic protection system 1 can be impressed cathodic current protection system, or anode loss protection system
System, the present embodiment are not limited to this.Wherein, impressed cathodic current protection system passes through external dc power supply and auxiliary sun
Pole, supplements substantial amounts of electronics to 2 surface of buried pipeline so that state of 2 surface of buried pipeline in electron excess, so that burying
The surface of ground pipeline 2 is in cathodic region, it is to avoid 2 surface of buried pipeline occurs oxidation reaction, and then plays protection to buried pipeline 2
Effect, prevents buried pipeline 2 from being corroded by soil.And galvanic anode protection protecting system is referred to reproducibility stronger metal and quilt
Buried pipeline 2 connects, and so as to constitute galvanic cell, the stronger metal of reproducibility occurs oxidation reaction as negative pole so that metal is not
Disconnected to be consumed dissolving, produced electro transfer is on the surface of buried pipeline 2 so that 2 surface of buried pipeline is in cathodic region,
There is oxidation reaction so as to avoid 2 surface of buried pipeline, buried pipeline 2 is played a protective role.Wherein, the present embodiment is by original
Electrical instrumentation, automatic control equipment and valve etc. are provided with oil, natural gas station or oil and gas pipeline valve chamber along the line
Process facility is referred to as ground installation 3.The ground installation 3 can be electrical instrumentation, automatic control equipment, temperature pick-up
Any one in device, pressure transmitter, pipeline valve, or various above-mentioned ground installations 3, the present embodiment here do not do
Limit.
As shown in Figure 1, it can be seen that the connection of the device that the suppression cathodic protection system electric current that the present embodiment is provided leaks
Structure.Cathodic protection system 1 is electrically connected with buried pipeline 2 so that the cathodic protection current of the output of cathodic protection system 1 is covered
On the surface of buried pipeline 2, buried pipeline 2 is played a protective role；Buried pipeline 2 is electrically connected with ground installation 3 again, ground
Equipment 3 is used to controlling and monitoring 2 internal pressure of buried pipeline, the isoparametric change of temperature, while being provided with ground installation 3
The earthing or grounding means being connected with the earth, i.e., be connected to ground installation 3 positioned at intratelluric earthing pole by earth lead, for inciting somebody to action
Thunder and lightning that ground installation 3 is received, electrostatic are incorporated into the earth.A switching device 4 is connected with ground installation 3 and the earth is located at,
For blocking the cathodic protection current ground connection of the output of cathodic protection system 1, and the thunder and lightning that receives in ground installation 3 or generation
During electrostatic, by the thunder and lightning or electrostatic grounding.
The concrete operating principle of the device that above-mentioned suppression cathodic protection system electric current leaks is as follows：By by cathodic protection system
System 1 is electrically connected with buried pipeline 2 so that cathodic protection system 1 plays a protective role to buried pipeline 2；Ground installation 3 is led to
Cross switching device 4 to be grounded, ground installation 3 can be prevented from thunder and lightning, electrostatic interference.Switching device 4 disconnects condition with one, when
When which meets disconnection condition, switching device 4 disconnects, and prevents the cathodic protection current of cathodic protection system 1 to be grounded；Meanwhile, switch
Thunder and lightning or electrostatic grounding that ground installation 3 can also be received by device 4 at any time, therefore, the suppression cathodic protection system electricity
The device that stream leaks, not only can solve the technical problem of 1 drain of cathodic protection system, while can also solve ground setting
Standby 3 are subject to thunder and lightning, the technical problem of electrostatic interference.
In prior art, buried pipeline is protected using cathodic protection system, prevent buried pipeline to be subjected to soil and invade
Erosion, while earthing or grounding means is installed on the ground installation being connected with buried pipeline, for the interference for preventing Lei Jing, electrostatic from bringing.
When ground protection is carried out to above-mentioned ground installation by earthing or grounding means, as buried pipeline is connected with above-mentioned ground installation, enter
And cause the cathodic protection current on buried pipeline surface to import the earth by earthing or grounding means, so as to cause buried pipeline be subject to
The protection of cathodic protection system.Therefore, prior art above-mentioned protects buried pipeline not weather and avoid ground installation processing
Not by terms of lightning damage, the two can not be taken into account.But, in the present embodiment, by indirectly in ground installation 3 and earthing or grounding means
Enter switching device 4, the switching device 4 by blocking the cathodic protection current ground connection of the output of cathodic protection system 1, while by ground
Electrostatic that equipment 3 is received, thunder and lightning ground connection, not only can ensure that cathodic protection system 1 plays a protective role to buried pipeline 2,
Prevent buried pipeline 2 from suffering soil corrosion, while can also play a protective role to ground installation 3, prevent ground installation 3 from suffering quiet
Electricity, thunder and lightning infringement.
What the utility model was provided the suppress device that leaks of cathodic protection system electric current, including it is cathodic protection system, buried
Pipeline, ground installation and switching device；The cathodic protection system is electrically connected with the buried pipeline, the buried pipeline with
The ground installation electrical connection, the ground installation are grounded by the switching device；The switching device, for blocking
State the cathodic protection current ground connection of cathodic protection system output, and the thunder and lightning that receives in the ground installation or produce electrostatic
When, by the thunder and lightning or electrostatic grounding.The device that the suppression cathodic protection system electric current that the utility model is provided leaks, passes through
Switching device is accessed between ground installation and earthing or grounding means, the switching device disconnects condition with one, when its satisfaction disconnects bar
During part, switching device disconnects, and the cathodic protection current of cathodic protection system can be prevented to be grounded；Meanwhile, switching device can be with
The thunder and lightning that at any time ground installation is received or electrostatic grounding, not only can guarantee that cathodic protection system is played to buried pipeline
Protective effect, prevents buried pipeline from suffering soil corrosion, while can also play a protective role to ground installation, prevents ground installation
Suffer electrostatic, thunder and lightning infringement.
Optionally, above-mentioned switching device 4 is a solid decoupling device 5, and following Fig. 2 and Fig. 3 are solid decoupling device 5 respectively
Two kinds of different implementations in the device for suppressing cathodic protection system electric current to leak are applied, but the present embodiment is not with this
To limit.
The structural representation of the device embodiment two that Fig. 2 leaks for the suppression cathodic protection system electric current that the utility model is provided
Figure.As shown in Fig. 2 the ground installation 3 includes multiple, the solid decoupling device 5 for multiple, distinguish by each ground installation 3
It is grounded by a solid decoupling device 5.
Wherein, the amplitude range of the voltage signal of the output of cathodic protection system 1 is [- 0.85V, -1.2V], solid-state decoupling
The threshold range that clutch 5 disconnects is [- 2V, 2V].Solid decoupling device 5 can lead to exchange, resistance direct current, and when DC voltage [-
2V, 2V] in the range of, solid decoupling device 5 is off, when DC voltage not in the range of [- 2V, 2V] when, solid-state is gone
Coupler 5 is in channel status.
The operation principle of the device that the suppression cathodic protection system electric current that the present embodiment is provided leaks is as follows：Cathodic protection system
The electric current of 1 output of system is direct current, and the voltage range of the normal output of cathodic protection system 1 is [- 0.85V, -1.2V].When
Ground installation 3 is struck by lightning or during static focus, and the alternating current that thunderbolt or electrostatic are produced can pass through solid-state uncoupling
Device 5, imports the earth through grounded screen, and after electric charge is guided, solid decoupling device 5 recovers automatically to interrupt status；When ground installation 3
When being not affected by thunderbolt or static focus, as the voltage range of the output of cathodic protection system 1 is [- 0.85V, -1.2V], so
Voltage around buried pipeline 2 is also [- 0.85V, -1.2V], and because ground installation 3 is connected with buried pipeline 2, ground
The voltage of equipment 3 is identical with buried pipeline 2, output voltage also in the range of [- 0.85V, -1.2V], the positive benefit of the voltage range
In 5 interrupt status of solid decoupling device, it is ensured that 1 direct current of cathodic protection system will not import the earth by earthing or grounding means,
The cathodic protection current of the output of cathodic protection system 1 can be so caused to adsorb on the surface of buried pipeline 2 to greatest extent, from
And avoid buried pipeline 2 from being corroded by soil.
The utility model provides the device for suppressing cathodic protection system electric current to leak, by respectively on connection the earth and ground
Solid decoupling device is provided with the earth lead of equipment, the solid decoupling device can lead to exchange resistance direct current, by making ground
Thunder and lightning that equipment is received, electrostatic access the earth, and then ground installation is played a protective role, and prevent ground installation from suffering quiet
Electricity, thunder and lightning infringement；Meanwhile, the threshold range that the solid decoupling device disconnects includes cathodic protection system output voltage range, enters
And the direct current of cathodic protection system output is caused from passing through solid decoupling device, and then prevent cathodic protection system output
Cathodic protection current flow direction the earth so that cathodic protection system can play protection to buried pipeline, prevents buried pipeline by soil
Earth corrodes.
The structural representation of the device embodiment three that Fig. 3 leaks for the suppression cathodic protection system electric current that the utility model is provided
Figure.On the basis of above-described embodiment, as shown in figure 3, the ground installation 3 include it is multiple, the solid decoupling device 5 be one
Individual, described device also includes electrical grounding device 6；The plurality of ground installation 3 is connected with the electrical grounding device 6
Connect, the electrical grounding device 6 is grounded by the solid decoupling device 5.
Wherein, electrical grounding device 6 can be by the output voltage of multiple ground installations 3 impartial distribution, so that multiplely
Face equipment 3 is attached with a solid decoupling device 5.Specifically, output voltage of the cathodic protection system 1 to buried pipeline 2
For [- 0.85V, -1.2V], buried pipeline 2 is connected with ground installation 3 again, so on the earth lead 6 being connected with ground installation 3
The voltage of carrying also within the scope of [- 0.85V, -1.2V], as each 3 operating voltage of ground installation has difference, but each
The output voltage of ground installation 3 is all in the range of [- 0.85V, -1.2V], therefore causes multiple ground by electrical grounding device 6
After the impartial distribution of the output voltage of equipment 3, the output voltage of electrical grounding device 6 is also in the range of [- 0.85V, -1.2V].
The device that the suppression cathodic protection system electric current that the utility model is provided leaks, by connecting on multiple earth leads
It is connected to an electrical grounding device so that the impartial distribution of the output voltage of multiple ground installations, obtains an output voltage, from
And again electrical grounding device and a solid decoupling device are attached, and be grounded by solid decoupling device.This practicality
It is new to be distributed the output voltage of multiple ground installations impartial by electrical grounding device, and then multiple ground installations can be made
Same solid decoupling device is connected to, so as to reduce the cost of solid decoupling device, above-mentioned suppression cathodic protection system is reduced
The complexity of the device that electric current leaks.
Optionally, the electrical grounding device 6 is electrical grounding terminal device.
The structural representation of the device embodiment four that Fig. 4 leaks for the suppression cathodic protection system electric current that the utility model is provided
Figure.On the basis of above-described embodiment, as shown in figure 4, temperature measuring device 7 and/or pressure survey are provided with the buried pipeline 2
Examination instrument 8, the temperature measuring device 7/ or pressure tester 8 are connected with the ground installation 3 respectively.
Specifically, the instrument for arranging on buried pipeline 2 can be temperature measuring device 7, or pressure tester 8,
Can be other any one be used for the instrument of monitoring, the present embodiment is not limited to this.
Wherein, the temperature measuring device 7 for arranging on buried pipeline 2 is used for the temperature tested in buried pipeline 2, pressure tester
8 are used for the pressure tested in buried pipeline 2, while the data for collecting are sent to ground installation 3 by wire.
The device that the suppression cathodic protection system electric current that the utility model is provided leaks, has by the equipment on buried pipeline
Temperature measuring device and/or pressure tester so that temperature measuring device/or pressure tester are connected with the ground installation respectively,
The ground installation is used to detect the pressure and temperature situation in buried pipeline；The suppression cathodic protection system that the present embodiment is provided
The device that electric current leaks, not only can guarantee that cathodic protection system plays a protective role to buried pipeline, prevent buried pipeline from meeting with
Soil corrosion, while can also play a protective role to ground installation, prevents ground installation from suffering electrostatic, thunder and lightning infringement.Additionally,
What the utility model was provided suppresses the device that cathodic protection system electric current leaks by suppressing cathodic protection current flow direction the earth, subtracts
Few electric current flowing is to temperature measuring device and/or the electromagnetic interference of pressure tester, so that temperature measuring device and/or pressure are surveyed
Examination instrument is more accurate when being acquired to buried pipeline data, improves the device that the suppression cathodic protection system electric current leaks
Reliability.
Finally it should be noted that：Various embodiments above is only illustrating the technical solution of the utility model, rather than which is limited
System；Although being described in detail to the utility model with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：Which still can be modified to the technical scheme described in foregoing embodiments, or to which part or whole
Technical characteristic carries out equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from this practicality new
The scope of each embodiment technical scheme of type.
Claims (9)
1. the device that a kind of suppression cathodic protection system electric current leaks, it is characterised in that include：Cathodic protection system, underground pipe
Road, ground installation and switching device；The cathodic protection system is electrically connected with the buried pipeline, the buried pipeline and institute
Ground installation electrical connection is stated, the ground installation is grounded by the switching device；
The switching device, for blocking the cathodic protection current ground connection of the cathodic protection system output, and on the ground
Thunder and lightning that equipment is received or when producing electrostatic, by the thunder and lightning or electrostatic grounding.
2. device according to claim 1, it is characterised in that the switching device is solid decoupling device.
3. device according to claim 2, it is characterised in that the ground installation includes multiple, the solid-state uncoupling
Device is multiple；
Each ground installation is respectively by a solid decoupling device ground connection.
4. device according to claim 2, it is characterised in that the ground installation includes multiple, the solid-state uncoupling
Device is one, and described device also includes electrical grounding device；
The plurality of ground installation is connected with the electrical grounding device, and the electrical grounding device is by the solid-state
Decoupling device is grounded.
5. device according to claim 4, it is characterised in that the electrical grounding device is set for electrical grounding terminal
It is standby.
6. the device according to any one of claim 2-5, it is characterised in that the ground installation includes that electric meter sets
Any one in standby, automatic control equipment, temperature transmitter, pressure transmitter, pipeline valve.
7. device according to claim 6, it is characterised in that the amplitude of the voltage signal of the cathodic protection system output
Scope is [- 0.85V, -1.2V]；The threshold range that the solid decoupling device disconnects is [- 2V, 2V].
8. device according to claim 7, it is characterised in that the cathodic protection system is impressed cathodic current protection system
System or galvanic anode protection protecting system.
9. device according to claim 8, it is characterised in that be provided with the buried pipeline temperature measuring device and/or
Pressure tester, the temperature measuring device and/or pressure tester are connected with the ground installation respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620885550.0U CN206070004U (en) | 2016-08-15 | 2016-08-15 | Device for inhibiting current leakage of cathode protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620885550.0U CN206070004U (en) | 2016-08-15 | 2016-08-15 | Device for inhibiting current leakage of cathode protection system |
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| Publication Number | Publication Date |
|---|---|
| CN206070004U true CN206070004U (en) | 2017-04-05 |
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ID=58431990
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| CN201620885550.0U Active CN206070004U (en) | 2016-08-15 | 2016-08-15 | Device for inhibiting current leakage of cathode protection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720745A (en) * | 2019-03-19 | 2020-09-29 | 中国石油天然气股份有限公司 | Cutoff valve chamber risk prevention and control device |
-
2016
- 2016-08-15 CN CN201620885550.0U patent/CN206070004U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720745A (en) * | 2019-03-19 | 2020-09-29 | 中国石油天然气股份有限公司 | Cutoff valve chamber risk prevention and control device |
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