CN114334229A - Cathode cable structure for impressed current cathodic protection device of thermal production well - Google Patents
Cathode cable structure for impressed current cathodic protection device of thermal production well Download PDFInfo
- Publication number
- CN114334229A CN114334229A CN202011071336.9A CN202011071336A CN114334229A CN 114334229 A CN114334229 A CN 114334229A CN 202011071336 A CN202011071336 A CN 202011071336A CN 114334229 A CN114334229 A CN 114334229A
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- rubber sleeve
- stainless steel
- connecting section
- steel connecting
- impressed current
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000004210 cathodic protection Methods 0.000 title claims description 22
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 67
- 239000010935 stainless steel Substances 0.000 claims abstract description 67
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims description 18
- 229920005989 resin Polymers 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 3
- 238000004078 waterproofing Methods 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 8
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000005260 corrosion Methods 0.000 abstract description 7
- 239000002689 soil Substances 0.000 description 6
- 230000018109 developmental process Effects 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The invention relates to a cathode cable structure for an impressed current cathode protection device of a thermal production well, which comprises a stainless steel connecting section, wherein the first end of the stainless steel connecting section can be fixedly connected with a sleeve, and the second end of the stainless steel connecting section is electrically connected with an impressed current cathode cable; a first rubber sleeve is detachably sleeved on the stainless steel connecting section from the first end inwards, and the first rubber sleeve is high-temperature resistant; a second rubber sleeve is sleeved inwards from the second end on the stainless steel connecting section, and the second rubber sleeve is oil-water resistant; the second rubber sleeve with the adjacent tip of first rubber sleeve is the top and supports the setting, just first rubber sleeve with the adjacent tip of second rubber sleeve is waterproof connection. The stainless steel connecting section is used for replacing a copper core or an aluminum core of a conventional cable, and the rubber sleeve is sleeved outside the stainless steel connecting section for protection, so that corrosion protection can be performed on buried pipelines such as oil transportation pipelines and water transportation pipelines, and potential safety hazards are eliminated.
Description
Technical Field
The invention relates to the technical field of oil extraction engineering, in particular to a cathode cable structure for an impressed current cathode protection device of a thermal production well.
Background
At present, the corrosion of underground and ground gathering and transportation pipe columns is more serious due to the thermal recovery development mode in the middle and later stages of development and production of oil fields, and the environmental protection and safety problems are prominent due to leakage caused by pipeline perforation caused by corrosion. The cathode protection technology is used to protect the outer surface of underground and ground pipe column electrochemically, and one of the links in the cathode protection technology is the connection between cathode cable and casing. The on-site cathode cable is directly welded on the outer surface of the sleeve, the development mode of part of blocks of the oil field is thermal recovery development, the highest temperature of the surface of part of the sleeve is about 190 ℃, the insulating layer of the cathode cable cannot withstand the high temperature, the insulating layer is aged, the copper core or the aluminum core is corroded by high-temperature oxygen, and after a period of time, the cable and the sleeve are in virtual connection to generate sparks, so that potential safety hazards are caused. Therefore, a high temperature resistant cathode cable structure reliably connected with the sleeve needs to be developed to eliminate potential safety hazards.
Therefore, the inventor provides a cathode cable structure for an impressed current cathodic protection device of a thermal production well by virtue of experience and practice of related industries for many years, so as to overcome the defects in the prior art.
Disclosure of Invention
The invention aims to provide a cathode cable structure for an impressed current cathodic protection device of a thermal production well, which uses a stainless steel connecting section to replace a copper core or an aluminum core of a conventional cable, and a rubber sleeve is sleeved outside the stainless steel connecting section for protection, so that corrosion protection can be performed on buried pipelines such as oil and water pipelines, and potential safety hazards are eliminated.
The invention aims to realize the structure, and the structure comprises a stainless steel connecting section, wherein the first end of the stainless steel connecting section can be fixedly connected with a sleeve, and the second end of the stainless steel connecting section is electrically connected with an impressed current cathode cable; a first rubber sleeve is detachably sleeved on the stainless steel connecting section from the first end inwards, and the first rubber sleeve is high-temperature resistant; a second rubber sleeve is sleeved inwards from the second end on the stainless steel connecting section, and the second rubber sleeve is oil-water resistant; the second rubber sleeve with the adjacent tip of first rubber sleeve is the top and supports the setting, just first rubber sleeve with the adjacent tip of second rubber sleeve is waterproof connection.
In a preferred embodiment of the present invention, a slit is disposed on one side of the first rubber sleeve, the first rubber sleeve can be sleeved on the stainless steel connecting section through the slit, and a high temperature resistant resin unit can be filled into the slit to protect the stainless steel connecting section from water.
In a preferred embodiment of the present invention, the second rubber sleeve is disposed in a circular tube, and the second rubber sleeve is inwardly sleeved on the stainless steel connecting section from the second end of the stainless steel connecting section.
In a preferred embodiment of the present invention, the second end of the stainless steel connecting section is provided with an end circular hole, and the end circular hole is electrically connected to the impressed current cathode cable.
In a preferred embodiment of the present invention, adjacent ends of the first rubber sleeve and the second rubber sleeve are impregnated with a waterproof resin unit for waterproofing.
In a preferred embodiment of the present invention, the first rubber sleeve and the second rubber sleeve are covered with an electrical tape at the outer sides of the adjacent ends thereof for waterproof insulation treatment.
In a preferred embodiment of the invention, the stainless steel connecting section has a diameter of 15 mm.
In a preferred embodiment of the present invention, the length of the first rubber sleeve is greater than 1 m.
In a preferred embodiment of the present invention, the length of the second rubber sleeve is greater than 1 m.
In a preferred embodiment of the present invention, the first rubber sleeve can withstand a temperature of up to 190 ℃.
From the above, the cathode cable structure for the impressed current cathodic protection device of the thermal production well provided by the invention has the following beneficial effects:
in the cathode cable structure for the impressed current cathode protection device of the thermal production well, the stainless steel connecting section is used for replacing a copper core or an aluminum core of a conventional cable, the first rubber sleeve and the second rubber sleeve which are mutually abutted are sleeved on the outer side of the stainless steel connecting section, the stainless steel connecting section is prevented from being directly contacted with soil, one end, close to the sleeve, of the stainless steel connecting section is in a high-temperature environment, the first rubber sleeve is arranged in a high-temperature-resistant manner, and the stainless steel connecting section is prevented from being damaged by high-temperature erosion; the second rubber sleeve is arranged in an oil-water-resistant manner, so that the stainless steel connecting section is prevented from being rusted and damaged; the first rubber sleeve is provided with a slit, and a high-temperature-resistant resin unit is filled in the slit, so that the slit is convenient for the disassembly and the assembly of the first rubber sleeve, and the replacement efficiency can be effectively improved;
the cathode cable structure for the impressed current cathode protection device of the thermal production well can carry out corrosion protection on buried pipelines such as oil transportation, water transportation and the like, and eliminates potential safety hazards.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:
FIG. 1: is a schematic diagram of the cathode cable structure of the impressed current cathodic protection device for a thermal production well of the present invention.
FIG. 2: is a cross-sectional view a-a in fig. 1.
FIG. 3: is a schematic view of the first rubber sleeve of the present invention.
FIG. 4: is a schematic view of the second rubber sleeve of the present invention.
FIG. 5: is the installation schematic diagram of the cathode cable structure of the impressed current cathodic protection device for the thermal production well.
In the figure:
100. a cathode cable structure for the impressed current cathodic protection device of the thermal production well;
1. a stainless steel connecting section; 11. an end circular hole;
2. a first rubber sleeve; 21. slotting; 22. a high temperature resistant resin unit;
3. a second rubber sleeve;
4. a water-repellent resin unit;
5. an electrical tape;
8. an impressed current cathode cable;
9. a sleeve.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
The specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the invention in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
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 application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 5, the present invention provides a cathode cable structure 100 for an impressed current cathode protection device of a thermal production well, comprising a stainless steel connecting section 1, wherein a first end of the stainless steel connecting section 1 can be fixedly connected to a casing 9, and a second end of the stainless steel connecting section 1 is electrically connected to an impressed current cathode cable 8; a first rubber sleeve 2 is detachably sleeved on the stainless steel connecting section 1 from the first end inwards, and the first rubber sleeve 2 is high-temperature resistant; a second rubber sleeve 3 is sleeved inwards from the second end on the stainless steel connecting section 1, and the second rubber sleeve 3 is oil-water resistant; the adjacent tip of second rubber sleeve 3 and first rubber sleeve 2 is the top and supports the setting, and the adjacent tip of first rubber sleeve 2 and second rubber sleeve 3 is waterproof connection.
In the cathode cable structure for the impressed current cathode protection device of the thermal production well, the stainless steel connecting section is used for replacing a copper core or an aluminum core of a conventional cable, the first rubber sleeve and the second rubber sleeve which are mutually abutted are sleeved on the outer side of the stainless steel connecting section, the stainless steel connecting section is prevented from being directly contacted with soil, one end, close to the sleeve, of the stainless steel connecting section is in a high-temperature environment, the first rubber sleeve is arranged in a high-temperature-resistant manner, and the stainless steel connecting section is prevented from being damaged by high-temperature erosion; the second rubber sleeve is arranged in an oil-water-resistant manner, so that the stainless steel connecting section is prevented from being rusted and damaged; the cathode cable structure for the impressed current cathode protection device of the thermal production well can carry out corrosion protection on buried pipelines such as oil transportation, water transportation and the like, and eliminates potential safety hazards.
Further, as shown in fig. 2 and 3, a slit 21 is formed in one side of the first rubber sleeve 2, the first rubber sleeve 2 can be sleeved on the stainless steel connecting section 1 through the slit 21, and a high-temperature-resistant resin unit 22 can be filled in the slit 21 to protect the stainless steel connecting section 1 from water. The first end of the stainless steel connecting section 1 is welded with the sleeve 9 and is in a high-temperature environment, the highest temperature can reach 190 ℃, the first rubber sleeve 2 is arranged in a high-temperature-resistant mode, the highest temperature can be endured, and the ageing is slowed down. The first rubber sleeve 2 has a certain thickness, and the position of the cut 21 is filled with a high-temperature resistant resin unit 22 for waterproof treatment. Because impressed current cathodic protection device is with solar energy power supply (prior art), impressed current cathodic protection device's output voltage is safe voltage 36V, so first rubber sleeve 2 (high temperature resistant rubber sleeve) do well waterproof treatment can, change according to the ageing condition after first rubber sleeve 2 uses a plurality of times under the high temperature environment. The slot 21 facilitates the disassembly and assembly of the first rubber sleeve 2, and the replacement efficiency can be effectively improved.
In consideration of a high-temperature environment, it is preferable that the length (axial length) of the first rubber sleeve 2 (high-temperature resistant rubber sleeve) is greater than 1 m. And determining the actual length of the first rubber sleeve 2 according to the actual situation on site.
Further, as shown in fig. 1 and 4, the second rubber sleeve 3 is a circular tube, and the second rubber sleeve 3 is sleeved on the stainless steel connecting section 1 from the second end of the stainless steel connecting section 1 to the inside. Because the high-temperature environment is avoided, the second rubber sleeve 3 can normally work for a long time and is not required to be replaced frequently. Preferably, the length (axial length) of the second rubber sleeve 3 is greater than 1 m. And determining the actual length of the second rubber sleeve 3 according to the actual situation on site.
Further, as shown in fig. 1, the second end of the stainless steel connecting section 1 is provided with an end circular hole 11, and the end circular hole 11 is electrically connected with the impressed current cathode cable 8. The stainless steel connecting section 1 can be reliably and electrically connected with the impressed current cathode cable 8 through other structures.
Further, as shown in fig. 1, the adjacent ends of the first rubber sleeve 2 and the second rubber sleeve 3 are impregnated with a waterproof resin unit 4 for waterproofing. The waterproof resin unit 4 can be made of common resin, and the waterproof requirement can be met.
Further, as shown in fig. 1, the outer sides of the adjacent ends of the first rubber sleeve 2 and the second rubber sleeve 3 are covered with an electrical tape 5 for waterproof insulation treatment. The adjacent ends of the first rubber sleeve 2 and the second rubber sleeve 3 are filled with the waterproof resin unit 4 and then are wound with the coated electrical tape 5, so that the waterproof effect is further ensured.
Further, the stainless steel connecting section 1 is used to replace a conventional copper core or aluminum core of the cable, and in order to reduce the resistance of the stainless steel connecting section 1, a stainless steel connecting section with a larger diameter is selected, and in a specific embodiment of the present invention, the diameter of the stainless steel connecting section 1 is 15 mm.
As shown in fig. 5, when the cathodic cable structure 100 for impressed current cathodic protection device of thermal production well of the present invention is used, it is buried 500mm underground, one end is welded with the outer surface of the casing 9, and the other end is reliably electrically connected with the impressed current cathodic cable 8. In the prior art, the high-temperature damage of a copper core or an aluminum core and the aging of a cable insulating layer caused by high temperature shorten the normal working time of the cathode protection device, the circuit is broken for 1 time per month on average, workers are required to dig out a soil layer by the high temperature, then the disconnected cable is connected again, the cathode protection device is easy to be thermally damaged, and the phenomenon of sparks caused by factors such as vibration is easily caused by virtual connection due to the circuit breaking, so that the safety is poor. After the rubber sleeve replacement device is adopted, whether the part of the first rubber sleeve 2 (the high-temperature-resistant rubber sleeve) needs to be actively replaced is checked according to the actual condition, and the normal working period can reach half a year. When needing to change first rubber sleeve 2, dig the soil layer, get rid of electrician's sticky tape 5 and the waterproof resin unit 4 of the adjacent tip of first rubber sleeve 2 and second rubber sleeve 3, get rid of the high temperature resistant resin unit 22 of slot 21 department on the first rubber sleeve 2, peel off and get rid of first rubber sleeve 2, overlap new first rubber sleeve 2 on stainless steel linkage segment 1 through slot 21, slot 21 department pours into high temperature resistant resin unit 22, waterproof resin unit 4 and winding electrician's sticky tape 5 are poured into to the adjacent tip of first rubber sleeve 2 and second rubber sleeve 3, fill up the soil and resume and can continue to use.
From the above, the cathode cable structure for the impressed current cathodic protection device of the thermal production well provided by the invention has the following beneficial effects:
in the cathode cable structure for the impressed current cathode protection device of the thermal production well, the stainless steel connecting section is used for replacing a copper core or an aluminum core of a conventional cable, the first rubber sleeve and the second rubber sleeve which are mutually abutted are sleeved on the outer side of the stainless steel connecting section, the stainless steel connecting section is prevented from being directly contacted with soil, one end, close to the sleeve, of the stainless steel connecting section is in a high-temperature environment, the first rubber sleeve is arranged in a high-temperature-resistant manner, and the stainless steel connecting section is prevented from being damaged by high-temperature erosion; the second rubber sleeve is arranged in an oil-water-resistant manner, so that the stainless steel connecting section is prevented from being rusted and damaged; the first rubber sleeve is provided with a slit, and a high-temperature-resistant resin unit is filled in the slit, so that the slit is convenient for the disassembly and the assembly of the first rubber sleeve, and the replacement efficiency can be effectively improved;
the cathode cable structure for the impressed current cathode protection device of the thermal production well can carry out corrosion protection on buried pipelines such as oil transportation, water transportation and the like, and eliminates potential safety hazards.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (10)
1. A cathode cable structure for an impressed current cathodic protection device of a thermal production well is characterized by comprising a stainless steel connecting section, wherein the first end of the stainless steel connecting section can be fixedly connected to a sleeve, and the second end of the stainless steel connecting section is electrically connected with an impressed current cathode cable; a first rubber sleeve is detachably sleeved on the stainless steel connecting section from the first end inwards, and the first rubber sleeve is high-temperature resistant; a second rubber sleeve is sleeved inwards from the second end on the stainless steel connecting section, and the second rubber sleeve is oil-water resistant; the second rubber sleeve with the adjacent tip of first rubber sleeve is the top and supports the setting, just first rubber sleeve with the adjacent tip of second rubber sleeve is waterproof connection.
2. The cathode cable structure for the impressed current cathodic protection device of the thermal production well as defined in claim 1, wherein a slit is provided at one side of the first rubber sleeve, the first rubber sleeve can be sleeved on the stainless steel connecting section through the slit, and a high temperature resistant resin unit can be filled in the slit to protect the stainless steel connecting section from water.
3. The cathode cable structure for the impressed current cathodic protection device of the thermal production well according to claim 1 or 2, wherein the second rubber sleeve is arranged in a circular tube shape, and the second rubber sleeve is sleeved inwards from the second end of the stainless steel connecting section on the stainless steel connecting section.
4. The cathodic cable configuration for a impressed current cathodic protection device for a thermal production well as defined in claim 3 wherein the second end of the stainless steel connecting section is provided with an end circular hole, said end circular hole being electrically connected to the impressed current cathodic cable.
5. The cathode cable structure for impressed current cathodic protection of a thermal production well of claim 3 wherein the adjacent ends of said first rubber sleeve and said second rubber sleeve are impregnated with a waterproof resin unit for waterproofing.
6. The cathode cable structure for impressed current cathodic protection of a thermal production well of claim 5, wherein the adjacent ends of said first rubber sleeve and said second rubber sleeve are externally coated with electrical tape for waterproof insulation treatment.
7. The cathodic cable structure for a impressed current cathodic protection device for a thermal production well as defined in claim 3 wherein the stainless steel connecting section has a diameter of 15 mm.
8. The cathodic cable structure for a impressed current cathodic protection device for a thermal production well as defined in claim 3 wherein the length of said first rubber jacket is greater than 1 m.
9. The cathodic cable structure for a impressed current cathodic protection device for a thermal production well as defined in claim 3 wherein the length of said second rubber jacket is greater than 1 m.
10. The cathodic cable structure for a impressed current cathodic protection device for a thermal production well as defined in claim 3 wherein the first rubber jacket withstands temperatures up to 190 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011071336.9A CN114334229B (en) | 2020-10-09 | 2020-10-09 | Cathode cable structure for impressed current cathode protection device of thermal production well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011071336.9A CN114334229B (en) | 2020-10-09 | 2020-10-09 | Cathode cable structure for impressed current cathode protection device of thermal production well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114334229A true CN114334229A (en) | 2022-04-12 |
| CN114334229B CN114334229B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011071336.9A Active CN114334229B (en) | 2020-10-09 | 2020-10-09 | Cathode cable structure for impressed current cathode protection device of thermal production well |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5390386A (en) * | 1993-06-01 | 1995-02-21 | The D. S. Brown Company, Inc. | Suspension bridge cable wrap and application method |
| CN1189543A (en) * | 1997-10-15 | 1998-08-05 | Nv雷开股份有限公司 | Method for electrical protection of metal object grounding electrode implementing the method |
| CN203346479U (en) * | 2013-07-17 | 2013-12-18 | 苏州热工研究院有限公司 | Temporary cathode protection system adopting sacrificial anodes and used in debugging period of drum type filter screen of nuclear power station |
| CN210403329U (en) * | 2019-09-21 | 2020-04-24 | 福建恒汇电缆有限公司 | Novel power cable |
| CN211508004U (en) * | 2020-03-11 | 2020-09-15 | 北京城建集团有限责任公司 | Intermediate connection structure of mineral insulated cable |
-
2020
- 2020-10-09 CN CN202011071336.9A patent/CN114334229B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5390386A (en) * | 1993-06-01 | 1995-02-21 | The D. S. Brown Company, Inc. | Suspension bridge cable wrap and application method |
| CN1189543A (en) * | 1997-10-15 | 1998-08-05 | Nv雷开股份有限公司 | Method for electrical protection of metal object grounding electrode implementing the method |
| CN203346479U (en) * | 2013-07-17 | 2013-12-18 | 苏州热工研究院有限公司 | Temporary cathode protection system adopting sacrificial anodes and used in debugging period of drum type filter screen of nuclear power station |
| CN210403329U (en) * | 2019-09-21 | 2020-04-24 | 福建恒汇电缆有限公司 | Novel power cable |
| CN211508004U (en) * | 2020-03-11 | 2020-09-15 | 北京城建集团有限责任公司 | Intermediate connection structure of mineral insulated cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114334229B (en) | 2024-03-26 |
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