CN213925025U - Jacket stretching type impressed current cable protection device - Google Patents
Jacket stretching type impressed current cable protection device Download PDFInfo
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- CN213925025U CN213925025U CN202023195086.8U CN202023195086U CN213925025U CN 213925025 U CN213925025 U CN 213925025U CN 202023195086 U CN202023195086 U CN 202023195086U CN 213925025 U CN213925025 U CN 213925025U
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Abstract
The utility model belongs to the technical field of marine equipment corrosion prevention, and provides a jacket stretching type impressed current cable protection device, which carries out corrosion prevention protection on a jacket by setting an auxiliary protection component, thereby completely avoiding the problems of serious material consumption and high cost when setting a sacrificial anode and an anode leg in the prior art; meanwhile, the load influence on the jacket caused by the cathodic protection method on the jacket can be effectively reduced, the service life of the jacket is ensured, the whole device is simple in structure and convenient to install, the installation cost and the installation risk are reduced, and the economical efficiency is higher.
Description
Technical Field
The utility model belongs to the technical field of the marine facilities is anticorrosive, concretely relates to jacket tensile type impressed current cable protection device.
Background
In offshore oil development projects, various platforms such as oil production platforms, living platforms, central processing platforms, and the like need to be built on the sea. The platform generally mainly comprises: ocean engineering structures such as ocean engineering blocks, jackets serving as underwater supporting structures, risers and the like are generally steel structures. Since seawater is a very corrosive medium, the steel jacket is severely corroded if no effective corrosion protection measures are taken. Corrosion of the jacket may shorten the service life of the platform and increase the cost of platform maintenance and repair. In order to prevent corrosion of the jacket by seawater, a jacket corrosion prevention device, i.e., a sacrificial anode cathodic protection device, is usually installed on the jacket to prevent corrosion of the jacket.
The prior cathode protection device adopting a sacrificial anode method mainly comprises a sacrificial anode and an anode leg which are uniformly arranged on a jacket, wherein the sacrificial anode is welded on the jacket through the anode leg, and the jacket is protected through the consumption of the sacrificial anode; the device has the advantages of no need of external power supply, no or little interference to adjacent structures, no need of management after commissioning and debugging, smaller and more economical engineering, uniform distribution of protection current, high utilization rate and the like. Therefore, the coating is widely applied to a jacket for protecting an ocean steel structure, and achieves a good anti-corrosion effect. However, the prior art cathodic protection devices using the sacrificial anode method require the use of a large amount of aluminum alloy material, which increases the jacket load.
With the gradual deepening of the sea area and the increasing complexity of the jacket structure, the cost of the large jacket is greatly increased, if the conventional sacrificial anode method cathode protection device is adopted on the large jacket, hundreds of tons of aluminum alloy are wasted, and the stability of the large jacket is affected due to the increased load of the large jacket caused by excessive use of the sacrificial anode, so that the design strength of the jacket is increased, and the cost is increased. In addition, as the original sacrificial anode device of the jacket is completely consumed and the jacket is still in service, it is more difficult to add the sacrificial anode.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above disadvantages of the prior art, the present invention provides a jacket stretching impressed current cable protection device, which can effectively protect the jacket from the corrosion of seawater, and has simple structure and strong operability.
The utility model provides a technical scheme that its technical problem adopted is:
a jacket stretching type impressed current cable protection device comprises a potentiostat arranged at the top of a jacket, wherein the input end of the potentiostat is connected with a power supply, the output end of the potentiostat is connected with a plurality of reference electrodes, the reference electrodes are arranged on the side surface of the bottom of the jacket, and the negative electrode of the potentiostat is electrically connected with the jacket;
the device is characterized by further comprising an auxiliary protection assembly, wherein the auxiliary protection assembly comprises a waterproof cable, a sealing connecting piece and a sacrificial anode, the waterproof cable comprises a bearing steel cable and a plurality of cable conductors which are arranged at intervals with the bearing steel cable, a junction box is arranged at the top end of the waterproof cable, the top end of the bearing steel cable is connected with the jacket through the junction box and is communicated with the jacket in a polarity mode, the initial end of each cable conductor is electrically connected with the anode of the potentiostat through the junction box, and the bottom end of the bearing steel cable is fixedly arranged at the bottom of the jacket;
a plurality of sealing connecting pieces are arranged on the waterproof cable, the tail end of the cable conductor extends out of the side face of the waterproof cable and is connected with a connector positioned in the sealing connecting pieces, and the sacrificial anode can extend into the sealing connecting pieces to be in butt joint with the connector and electrically conducted with the cable conductor.
Preferably, a plurality of the reference electrodes are uniformly disposed around the center of the jacket.
Preferably, a fixed cable is horizontally arranged at the bottom of the jacket, and the end part of the fixed cable is connected to the jacket;
the bottom of waterproof cable is provided with the soxhlet festival, the soxhlet festival with the fixed cable is connected.
Preferably, the connection end of the distribution box and the waterproof cable is provided with a bending-resistant protection pipe.
Preferably, the waterproof cable is further provided with fixing pieces, and the fixing pieces correspond to the sealing connecting pieces one by one and are located below the sealing connecting pieces;
one end of the sacrificial anode extends into the sealing connecting piece, and the other end of the sacrificial anode penetrates through the fixing piece.
Preferably, the waterproof cable is provided with an armor layer.
Compared with the prior art, the beneficial effects of the utility model are that:
1. in the scheme, the jacket is protected against corrosion by arranging the auxiliary protection assembly, so that the problems of serious material consumption and high cost caused by arranging the sacrificial anode and the anode leg in the prior art are completely solved; meanwhile, the load influence on the jacket caused by the cathodic protection method on the jacket can be effectively reduced, the service life of the jacket is ensured, the whole device is simple in structure and convenient to install, the installation cost and the installation risk are reduced, and the economical efficiency is higher.
2. According to the scheme, the waterproof cable is skillfully arranged, the bearing steel cable and the cable conductor are arranged in the waterproof cable at intervals, and the bearing steel cable and the jacket are arranged in a polar mutual-communicating manner, so that the bearing steel cable and the jacket can form a cathode to obtain anti-corrosion protection in the use process of the whole device, and the service life of the device is effectively prolonged; and the cable conductor and the bearing steel cable are arranged in the same structure, so that the sacrificial anode can be used more stably and reliably.
3. In the scheme, the plurality of reference electrodes are arranged on the side face of the bottom of the jacket, and the characteristic that the cross section of the bottom of the jacket is larger than that of the top of the jacket is ingeniously utilized, so that the reference electrodes can be arranged at positions far away from the sacrificial electrodes and are tightly attached to the side face of a measured object, namely the jacket, so that ohmic drop is effectively reduced, and the operation reliability of the potentiostat is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.
Fig. 1 is a schematic view of the structure of the utility model in use.
Fig. 2 is a schematic view of the installation structure of the sacrificial anode of the present invention.
Wherein:
1-jacket, 11-fixed cable, 2-potentiostat, 3-reference electrode, 4-waterproof cable, 41-bearing steel cable, 42-cable conductor, 43-junction box, 44-cable joint, 45-bending-resistant protective tube, 5-sacrificial anode, 6-sealing connecting piece, 61-connector and 7-fixing piece.
Detailed Description
In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, and the described embodiments are merely some embodiments, rather than all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
As shown in fig. 1 and fig. 2, the present embodiment provides a jacket stretching impressed current cable protection device, which mainly includes a jacket 1, a potentiostat 2, a reference electrode 3, and an auxiliary protection component including a waterproof cable 4, a sacrificial anode 5, and a sealing connector 6.
The potentiostat 2 is arranged on the top of the jacket 1, such as in an equipment room of a deck arranged on the top of the jacket 1, and the input end of the potentiostat 2 is connected with a power supply, such as three-phase alternating current; the output end of the potentiostat 2 is connected with a plurality of reference electrodes 3.
A plurality of reference electrodes 3 are arranged on the side surface of the bottom of the jacket 1; as a preferable scheme, a plurality of the reference electrodes 3 are uniformly arranged around the center of the jacket 1, and specifically, when the top cross section of the bottom of the jacket 1 is rectangular, a plurality of the reference electrodes 3 are respectively arranged at the corner positions of the bottom of the jacket 1 to detect whether the bottom potential of the jacket 1 is over-protected or under-protected.
The waterproof cable 4 is a multi-core cable, and comprises a bearing steel cable 41 arranged in a central area, a plurality of cable conductors 42 surrounding the bearing steel cable 41 and arranged at intervals with the bearing steel cable 41, and an armor layer arranged outside the bearing steel cable 41 and the cable conductors 42 so as to reduce the impact of external force. Further, a junction box 43 is provided at the top end of the waterproof cable 4, the top end of the bearing steel cable 41 is connected and communicated with the jacket 1 through the junction box 43, the starting end of the cable conductor 42 is electrically connected with the positive electrode of the potentiostat 2 through the junction box 43, and the negative electrode of the potentiostat 2 is electrically connected with the jacket 1. The top end of the bearing steel cable 41 is hung at the top of the jacket 1, and the bottom end of the bearing steel cable 41 is fixedly arranged at the bottom of the jacket 1.
The sealing connectors 6 are arranged on the waterproof cable 4, the tail end of the cable conductor 42 extends out of the side face of the waterproof cable 4 and is connected with a connector 61 positioned in the sealing connectors 6, and the sacrificial anode 5 can extend into the sealing connectors 6 to be in butt joint with the connector 61 and electrically conducted with the cable conductor 42.
As a preferable scheme, the connector 61 is a connecting copper pipe, and the tail end of the cable conductor 42 is embedded in the connecting copper pipe; the other end of the connecting copper pipe is provided with a pore for the sacrificial anode 5 to extend into, and the sacrificial anode 5 is embedded into the connecting copper pipe after extending into the pore, so that the connection with the cable conductor 42 is realized. In addition, a blocking head can be arranged corresponding to the pore channel for the sacrificial anode 5 to extend into, so as to facilitate protection when the sacrificial anode is not in use.
In addition, a fixed cable 11 is horizontally arranged at the bottom of the jacket 1, and the end part of the fixed cable 11 is connected and arranged on the jacket 1; the bottom end of the waterproof cable 4 is provided with a cable joint 44, and the cable joint 44 is connected with the fixed cable 11. In this embodiment, the waterproof cable 4 is preferably disposed in the middle of the jacket 1, so that each reference electrode 3 can be disposed at a relatively longer distance from the anode end, thereby reducing ohmic drop and improving the accuracy of the detection data.
As a preferable scheme, the connection end of the distribution box 43 and the waterproof cable 4 is provided with a bending-resistant protective tube 45, and the bending-resistant protective tube 45 can prevent the waterproof cable 4 from being bent excessively and reduce the influence of the impact force of the sea waves and the floating ice on the waterproof cable 4.
As a preferable scheme, the waterproof cable 4 is further provided with fixing pieces 7, the fixing pieces 7 are arranged in one-to-one correspondence with the sealing connecting pieces 6, and the fixing pieces 7 arranged correspondingly are located below the sealing connecting pieces 6; one end of the sacrificial anode 5 extends into the sealing connecting piece 6, and the other end of the sacrificial anode 5 penetrates through the fixing piece 7.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.
Claims (6)
1. A jacket stretching type impressed current cable protection device is characterized by comprising a potentiostat arranged at the top of a jacket, wherein the input end of the potentiostat is connected with a power supply, the output end of the potentiostat is connected with a plurality of reference electrodes, the reference electrodes are arranged on the side surface of the bottom of the jacket, and the negative electrode of the potentiostat is electrically connected with the jacket;
the device is characterized by further comprising an auxiliary protection assembly, wherein the auxiliary protection assembly comprises a waterproof cable, a sealing connecting piece and a sacrificial anode, the waterproof cable comprises a bearing steel cable and a plurality of cable conductors which are arranged at intervals with the bearing steel cable, a junction box is arranged at the top end of the waterproof cable, the top end of the bearing steel cable is connected with the jacket through the junction box and is communicated with the jacket in a polarity mode, the initial end of each cable conductor is electrically connected with the anode of the potentiostat through the junction box, and the bottom end of the bearing steel cable is fixedly arranged at the bottom of the jacket;
a plurality of sealing connecting pieces are arranged on the waterproof cable, the tail end of the cable conductor extends out of the side face of the waterproof cable and is connected with a connector positioned in the sealing connecting pieces, and the sacrificial anode can extend into the sealing connecting pieces to be in butt joint with the connector and electrically conducted with the cable conductor.
2. The jacket tensile impressed current cable protection device of claim 1, wherein a plurality of said reference electrodes are uniformly disposed around the center of said jacket.
3. The jacket stretching impressed current cable protection device of claim 1, wherein a fixed cable is horizontally arranged at the bottom of the jacket, and the end part of the fixed cable is connected and arranged on the jacket;
the bottom of waterproof cable is provided with the soxhlet festival, the soxhlet festival with the fixed cable is connected.
4. The jacket tensile impressed current cable protection device of claim 1, wherein the connection end of said distribution box to said watertight cable is provided with a bend-resistant grommet.
5. The jacket stretching impressed current cable protection device of claim 1, wherein said waterproof cable is further provided with fixing pieces, said fixing pieces are in one-to-one correspondence with said sealing connectors and are located below said sealing connectors;
one end of the sacrificial anode extends into the sealing connecting piece, and the other end of the sacrificial anode penetrates through the fixing piece.
6. A jacket tensile impressed current cable protection device as claimed in claim 1, wherein said water-resistant cable is provided with an armor layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023195086.8U CN213925025U (en) | 2020-12-25 | 2020-12-25 | Jacket stretching type impressed current cable protection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023195086.8U CN213925025U (en) | 2020-12-25 | 2020-12-25 | Jacket stretching type impressed current cable protection device |
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| CN213925025U true CN213925025U (en) | 2021-08-10 |
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| CN202023195086.8U Active CN213925025U (en) | 2020-12-25 | 2020-12-25 | Jacket stretching type impressed current cable protection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112522712A (en) * | 2020-12-25 | 2021-03-19 | 中海油能源发展股份有限公司 | Jacket stretching type impressed current cable protection device |
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- 2020-12-25 CN CN202023195086.8U patent/CN213925025U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112522712A (en) * | 2020-12-25 | 2021-03-19 | 中海油能源发展股份有限公司 | Jacket stretching type impressed current cable protection device |
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