CN-121976196-A - Tensioning type impressed current cathodic protection system

CN121976196ACN 121976196 ACN121976196 ACN 121976196ACN-121976196-A

Abstract

The invention discloses a tensioning impressed current cathodic protection system which comprises a composite cable made of steel-cored aluminum stranded wires with outer jackets, a first insulation connecting structure arranged at the upper end of the composite cable and used for insulating and connecting the composite cable with a member to be protected, a cable branching structure arranged at the upper end of the composite cable and used for electrically connecting the composite cable with a power supply control cabinet, an auxiliary anode arranged on the composite cable and used for releasing current, and a second insulation connecting structure arranged at the lower end of the composite cable and used for insulating and connecting the composite cable with a gravity foundation. Compared with the existing composite cable copper used as a power line, the tensioning externally applied current cathodic protection system disclosed by the invention has the advantages of light weight and low price under the same current carrying requirement, and the steel-cored aluminum stranded wire only needs to be externally covered with the wear-resistant sheath, so that the production and processing process is simplified.

Inventors

ZHENG SHIYU
LIU LEI
ZHANG XINPING
JIA LEI
LI HONGDAN
YANG BO
ZHANG WENMING
CHANG YIDONG
ZHU DONGXU
ZHANG RENLONG

Assignees

大连科迈尔海洋科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260403

Claims (10)

1. A tensioned impressed current cathodic protection system comprising: a composite cable made of steel-cored aluminum stranded wires with outer jackets; The first insulation connection structure is arranged at the upper end of the composite cable and used for insulating and connecting the composite cable and the member to be protected; the cable branch structure is arranged at the upper end of the composite cable and used for electrically connecting the composite cable with the power supply control cabinet; An auxiliary anode disposed on the composite cable for discharging current; And the second insulation connecting structure is arranged at the lower end of the composite cable and used for insulating and connecting the composite cable with the gravity foundation.
2. The impressed current cathodic protection system of claim 1 wherein said first and second insulating connecting structures have the same structure comprising a sealed housing, a first gland, a compression gasket, a compression cap, a connecting sleeve, a connecting rod, and a non-metallic connecting plate; One end of the connecting sleeve is connected with the steel core of the end part of the composite cable in a pressure welding way, and the other end of the connecting sleeve is fixed with a first connecting end plate; The end part of the composite cable is sequentially sleeved with the first sealing sleeve, the compression gasket and the compression cap, the connecting sleeve is inserted into the cavity of the sealing shell from one end of the sealing shell, and the end part of the composite cable is fixedly connected with one end of the sealing shell in a sealing way through the first sealing sleeve, the compression gasket and the compression cap; The connecting rod is characterized in that a second connecting end plate is fixed at one end of the connecting rod, a third connecting end plate is fixed at the other end of the connecting rod, the rod body of the connecting rod is sequentially sleeved with the first sealing sleeve, the compression gasket and the compression cap, one end of the connecting rod, which is fixed with the second connecting end plate, is inserted into a cavity of the sealing shell from the other end of the sealing shell, and the rod body of the connecting rod is fixedly connected with the other end of the sealing shell in a sealing manner through the first sealing sleeve, the compression gasket and the compression cap; The first connecting end plate and the second connecting end plate are fixedly connected through the nonmetal connecting plate.
3. The impressed current cathodic protection system of claim 2 wherein two of said non-metallic connecting plates are symmetrically disposed between said first and second connecting end plates.
4. The tensioned impressed current cathodic protection system recited in claim 1 wherein the auxiliary anode comprises an auxiliary anode body, an auxiliary anode connection sleeve, a conductive connection block, and a second seal cartridge; the auxiliary anode main body is of a sleeve structure, two ends of the auxiliary anode main body are respectively fixed with an auxiliary anode connecting sleeve, and the conductive connecting block and the second sealing sleeves positioned at two ends of the conductive connecting block are arranged in the auxiliary anode connecting sleeve; The composite cable is provided with an aluminum stranded wire exposed part, the auxiliary anode main body is sleeved on the composite cable, the auxiliary anode connecting sleeves at two ends are respectively and fixedly connected with the composite cable in a sealing manner in a crimping manner, and the conductive connecting block is arranged at the aluminum stranded wire exposed part of the composite cable and is in crimping manner through the auxiliary anode connecting sleeves to realize the electric connection of the composite cable and the auxiliary anode main body.
5. The tension impressed current cathodic protection system of claim 4 wherein said auxiliary anode body and said auxiliary anode connecting sleeve are titanium tubes surface plated with MMO; the conductive connecting block is made of copper blocks.
6. The system of claim 1, wherein the cable branching structure comprises a branch cover housing, a branch cover end plate, a profiled parallel groove clamp, a branch cable, and a waterproof joint; The two ends of the wire-distributing cover shell are respectively fixed with the wire-distributing cover end plates, the special-shaped parallel groove clamps are arranged in the wire-distributing cover shell, and the composite cable passes through the wire-distributing cover shell and is fixedly connected with the wire-distributing cover end plates at the two ends in a sealing way through the waterproof joint; one end of the branch cable is fixedly connected with the branch cover end plate at one end through a waterproof joint and is partially arranged in the cavity of the branch cover shell, and the part of the branch cable arranged in the cavity of the branch cover shell is electrically connected with the composite cable through the special-shaped parallel groove clamp.
7. The impressed current cathodic protection system of claim 1 further comprising a composite cable tensioning device coupled to said first insulating connection structure for tension adjustment of said composite cable; The compound cable tensioning device comprises a turnbuckle and shackles fixed at two ends of the turnbuckle.
8. The impressed current cathodic protection system of claim 7 further comprising a composite cable top anchor fixedly attached to the upper end of the composite cable tensioning device for fixedly attaching the upper end of the composite cable to the upper end of the member to be protected.
9. The impressed current cathodic protection system of claim 1 further comprising a gravitational foundation fixedly attached to the lower end of said second insulating connecting structure for securing the lower end of said composite cable.
10. The tensioned impressed current cathodic protection system recited in claim 2 or 3 wherein said non-metallic connecting plates are FRP; And epoxy structural adhesive is filled in the sealing shell.

Description

Tensioning type impressed current cathodic protection system Technical Field The invention relates to the technical field of impressed current cathodic protection systems and ocean engineering, in particular to a tensioning impressed current cathodic protection system. Background On ocean platforms such as a jacket, an offshore wind power foundation and an offshore photovoltaic foundation in ocean engineering, ocean platform corrosion protection is generally carried out through a tensioning type impressed current cathodic protection system, a composite cable in the tensioning type impressed current cathodic protection system applied by the existing ocean engineering generally adopts a structure form comprising a steel wire rope, an insulating layer, a buffer layer, a conductor, a filling layer, a water blocking layer and an outer sheath from inside to outside, the composite cable of the structure is complex in production process, high in price cost and large in volume weight, the auxiliary anode position is connected with the composite cable, tap process treatment is needed, the tap structure is prone to occurrence of broken wire risk, and the sealing structure is prone to occurrence of water inlet short circuit and the like under water after the auxiliary anode is connected. Disclosure of Invention The invention provides a tension impressed current cathodic protection system aiming at the problems existing in the prior art. The invention adopts the following technical means: A tensioned impressed current cathodic protection system comprising: a composite cable made of steel-cored aluminum stranded wires with outer jackets; The first insulation connection structure is arranged at the upper end of the composite cable and used for insulating and connecting the composite cable and the member to be protected; the cable branch structure is arranged at the upper end of the composite cable and used for electrically connecting the composite cable with the power supply control cabinet; An auxiliary anode disposed on the composite cable for discharging current; And the second insulation connecting structure is arranged at the lower end of the composite cable and used for insulating and connecting the composite cable with the gravity foundation. Further, the first insulating connecting structure and the second insulating connecting structure have the same structure and comprise a sealing shell, a first sealing sleeve, a pressing gasket, a pressing cap, a connecting sleeve, a connecting rod and a nonmetal connecting plate; One end of the connecting sleeve is connected with the steel core of the end part of the composite cable in a pressure welding way, and the other end of the connecting sleeve is fixed with a first connecting end plate; The end part of the composite cable is sequentially sleeved with the first sealing sleeve, the compression gasket and the compression cap, the connecting sleeve is inserted into the cavity of the sealing shell from one end of the sealing shell, and the end part of the composite cable is fixedly connected with one end of the sealing shell in a sealing way through the first sealing sleeve, the compression gasket and the compression cap; The connecting rod is characterized in that a second connecting end plate is fixed at one end of the connecting rod, a third connecting end plate is fixed at the other end of the connecting rod, the rod body of the connecting rod is sequentially sleeved with the first sealing sleeve, the compression gasket and the compression cap, one end of the connecting rod, which is fixed with the second connecting end plate, is inserted into a cavity of the sealing shell from the other end of the sealing shell, and the rod body of the connecting rod is fixedly connected with the other end of the sealing shell in a sealing manner through the first sealing sleeve, the compression gasket and the compression cap; The first connecting end plate and the second connecting end plate are fixedly connected through the nonmetal connecting plate. Further, two nonmetal connecting plates are symmetrically arranged between the first connecting end plate and the second connecting end plate. Further, the auxiliary anode comprises an auxiliary anode main body, an auxiliary anode connecting sleeve, a conductive connecting block and a second sealing sleeve; the auxiliary anode main body is of a sleeve structure, two ends of the auxiliary anode main body are respectively fixed with an auxiliary anode connecting sleeve, and the conductive connecting block and the second sealing sleeves positioned at two ends of the conductive connecting block are arranged in the auxiliary anode connecting sleeve; The composite cable is provided with an aluminum stranded wire exposed part, the auxiliary anode main body is sleeved on the composite cable, the auxiliary anode connecting sleeves at two ends are respectively and fixedly connected with the composite cable in a sealing manner in a crimping manner