CN201741818U - Seabed power cable onshore section grounding device - Google Patents
Seabed power cable onshore section grounding device Download PDFInfo
- Publication number
- CN201741818U CN201741818U CN2010202885558U CN201020288555U CN201741818U CN 201741818 U CN201741818 U CN 201741818U CN 2010202885558 U CN2010202885558 U CN 2010202885558U CN 201020288555 U CN201020288555 U CN 201020288555U CN 201741818 U CN201741818 U CN 201741818U
- Authority
- CN
- China
- Prior art keywords
- power cable
- grounding
- connection
- electric power
- nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to a seabed power cable onshore section grounding device which structurally comprises a grounding joint base, a nut bolt component, an outer sheath, a waterproof wrapping tape, a first grounding wire, a second grounding wire and a hoop; the grounding joint base is welded on the lead protective sheath, the nut of the nut bolt component is welded on the grounding joint base, one end of a first grounding wire is connected with the bolt of the nut bolt component and the other end thereof is connected with a hoop, and one end of the second grounding wire is connected with the hoop and the other end thereof is connected with the ground. The seabed power cable onshore section grounding device can reduce the power transmission loss, improve the allowed current-carrying capacity and accordingly and greatly improve the performance of the seabed power cable and greatly save the production cost of the cable.
Description
Technical field
The utility model relates to a kind of earthing device, relates in particular to land section earthing device of a kind of sea electric power cable.
Background technology
For sea electric power cable, because length is longer, the overwhelming majority is laid in the seabed, and wire armoring is arranged again, so its loss is very large for the cable of land.Its radiating condition of land part is not as marine because sea electric power cable is laid in simultaneously, and therefore land section permission ampacity is more a lot of than marine section little.So reduce loss, particularly reduce land section loss, the permission ampacity that improves land section is the key that improves the sea electric power cable ampacity.
The utility model content
For this reason, technical problem to be solved in the utility model provides a kind of reduction loss, thereby improves land section earthing device of sea electric power cable of whole current-carrying capacity of cable, to overcome the defective that prior art exists.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
Land section earthing device of a kind of sea electric power cable, its structure is followed successively by ground connection Connection Block, nut bolt component, oversheath, waterproof band, first earth connection, second earth connection, anchor ear from inside to outside, it is characterized in that: described ground connection Connection Block is welded on the lead sheath, nut in the described nut bolt component is welded on the ground connection Connection Block, described waterproof band is wrapped on oversheath, the bolt of described first earth connection, one end attaching nut bolt assembly, the other end connects anchor ear, and described second earth connection, one end connects anchor ear, other end ground connection.
Adopt technique scheme, sea electric power cable is peelled off wire armoring for land section, has eliminated the magnetic loss of armouring wire; Be provided with anchor ear in disembarkation place, can fix cable; And an earthing device is installed at the place at the disembarkation anchor ear; make the cable effective grounding; and be engaged in the end protective earthing; can make land section metal sheath loss have only eddy current loss (only being below 1% of conductor losses), can significantly improve the permission ampacity of land section of sea electric power cable like this.
In addition, because earthing device can be by seawater immersion, so in further improvement of the utility model, also be wound with the waterproof band on the described oversheath when tidal bore.Can play good sealing effectiveness to earthing device like this, prevent the earthing device water inlet.
Therefore, land section earthing device of sea electric power cable of the present utility model has and reduces the cable transmission loss, improves the advantage that allows ampacity, thereby can improve the performance of sea electric power cable greatly and save the production cost of cable greatly.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is elaborated:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the generalized section of earthing device.
Among the figure:
1-wire armoring 2-sea electric power cable 3-anchor ear 4-earth connection 5-nut bolt component 6-ground connection Connection Block 7-waterproof band 8-oversheath 9-lead sheath 10-insulating barrier 11-conductor
Embodiment
As shown in Figure 1, after sea electric power cable 2 lands, earlier land section cable serving and armour are peelled off, promptly as shown in Figure 2, land section is followed successively by conductor 11, insulating barrier 10, lead sheath 9, oversheath 8 from inside to outside.Remaining wire armoring 1 place is fixed cable with anchor ear 3, from wire armoring 1 about 0.5 meter an anchor ear 3 is being installed simultaneously.
Again as shown in Figure 2, between two anchor ears, peel off oversheath, expose lead sheath 9, and the nut of a ground connection Connection Block 6(nut bolt component 5 of welding has been welded in the ground connection Connection Block 6 on lead sheath 9), for can be well and lead sheath fit together, ground connection Connection Block 6 has the arc size identical with lead sheath 9.
Again put oversheath 8 then, and twine waterproof band 7 in the above.At last bolt is screwed in the ground connection Connection Block 6, and bolt and anchor ear 3 are coupled together, below anchor ear 3, connect an earth connection 4 simultaneously with an earth connection 4.
Adopt technique scheme, the utlity model has following advantage:
1. utilize nut bolt component 5 and ground connection Connection Block 6 can well make lead sheath 9 effective groundings, can bear the earth current of hundreds of ampere simultaneously.
2. bolt and anchor ear 3 are linked together and to prevent to bring the damage of lead sheath 9 because of the cable displacement.
3. because earthing device can be played good sealing effectiveness so twine waterproof band 7 on oversheath 8 by seawater immersion when tidal bore, prevent the earthing device water inlet.
Therefore, from foregoing detailed description as can be seen, land section earthing device of sea electric power cable of the present utility model has and reduces the cable transmission loss, improves the advantage that allows ampacity, thereby can improve the performance of sea electric power cable greatly and save the production cost of cable greatly.
But; those skilled in the art will recognize that; above-mentioned embodiment is exemplary; be in order better to make those skilled in the art can understand this patent; can not be interpreted as it is restriction to this patent protection range; so long as according to spirit that this patent discloses done anyly be equal to change or modify, all fall into the scope of this patent protection.
Claims (3)
1. land section earthing device of a sea electric power cable, its structure is followed successively by ground connection Connection Block, nut bolt component, oversheath, waterproof band, first earth connection, second earth connection, anchor ear from inside to outside, it is characterized in that: described ground connection Connection Block is welded on the lead sheath, nut in the described nut bolt component is welded on the ground connection Connection Block, the bolt of described first earth connection, one end attaching nut bolt assembly, the other end connects anchor ear, and described second earth connection, one end connects anchor ear, other end ground connection.
2. land section earthing device of sea electric power cable according to claim 1 is characterized in that: also be wound with the waterproof band on the described oversheath.
3. land section earthing device of sea electric power cable according to claim 1 and 2 is characterized in that: described ground connection Connection Block has the arc size identical with lead sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202885558U CN201741818U (en) | 2010-08-11 | 2010-08-11 | Seabed power cable onshore section grounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202885558U CN201741818U (en) | 2010-08-11 | 2010-08-11 | Seabed power cable onshore section grounding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201741818U true CN201741818U (en) | 2011-02-09 |
Family
ID=43557096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202885558U Expired - Fee Related CN201741818U (en) | 2010-08-11 | 2010-08-11 | Seabed power cable onshore section grounding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201741818U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594828A (en) * | 2013-11-26 | 2014-02-19 | 国家电网公司 | Portable discharging rod |
| CN104848621A (en) * | 2015-04-20 | 2015-08-19 | 国家电网公司 | System for cyclically cooling submarine cable landing section through tidal energy |
| CN110931994A (en) * | 2019-12-03 | 2020-03-27 | 烽火海洋网络设备有限公司 | High-silicon cast iron electrode and terminal station ocean ground |
| WO2021098363A1 (en) * | 2019-11-20 | 2021-05-27 | 烽火海洋网络设备有限公司 | Distal-end grounding electrode structure for use in undersea device |
-
2010
- 2010-08-11 CN CN2010202885558U patent/CN201741818U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594828A (en) * | 2013-11-26 | 2014-02-19 | 国家电网公司 | Portable discharging rod |
| CN103594828B (en) * | 2013-11-26 | 2015-12-30 | 国家电网公司 | A kind of portable discharging rod |
| CN104848621A (en) * | 2015-04-20 | 2015-08-19 | 国家电网公司 | System for cyclically cooling submarine cable landing section through tidal energy |
| CN104848621B (en) * | 2015-04-20 | 2017-03-01 | 国家电网公司 | A kind of system logging in section circulation temperature lowering using tide energy to submarine cable |
| WO2021098363A1 (en) * | 2019-11-20 | 2021-05-27 | 烽火海洋网络设备有限公司 | Distal-end grounding electrode structure for use in undersea device |
| CN110931994A (en) * | 2019-12-03 | 2020-03-27 | 烽火海洋网络设备有限公司 | High-silicon cast iron electrode and terminal station ocean ground |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201741818U (en) | Seabed power cable onshore section grounding device | |
| CN206023168U (en) | A kind of three core high-pressure undersea bottom power cable connector boxes | |
| CN202949049U (en) | Tubular busbar intermediate connection device | |
| CN202585777U (en) | Coaxial cable intermediate joint | |
| CN203722191U (en) | Photoelectric composite cable joint | |
| CN204205093U (en) | Electricity testing grounding ring | |
| CN101640403A (en) | Cable insulated joint | |
| CN202034753U (en) | Cross interconnection box used in single-core power cable | |
| CN201556921U (en) | Cable insulating connector structure | |
| CN203674680U (en) | Sealing anti-flood cross interconnection grounding box | |
| CN107274985B (en) | Z-shaped copper wire armored photoelectric composite submarine cable | |
| CN205787260U (en) | A kind of Large Copacity armored submarine optical cable fast connecting joint box | |
| CN111968780A (en) | Medium-low voltage submarine cable | |
| CN204991232U (en) | Waterproof corrosion -resistant type cable suitable for mud flat | |
| CN202949202U (en) | Main body of intermediate connector of cross-linked cable and novel intermediate connector formed by same | |
| CN202134240U (en) | Low armour loss anticorrosion submarine cable capable of being monitored by communication | |
| CN216212532U (en) | Anticorrosive radial waterproof power cable of protection against rodents ant | |
| CN102222541A (en) | Anti-corrosion submarine cable with low armoring loss for communication monitoring | |
| CN210349422U (en) | High-pressure submarine cable long-distance landing structure | |
| CN207250199U (en) | A kind of cable of buried anticorrosion against shock | |
| CN105405508A (en) | Reinforced aluminium alloy compressive cable | |
| CN201204265Y (en) | Long-acting flexible grounding electrode | |
| CN204596492U (en) | A kind of waterproof and dampproof industrial cable | |
| CN219979887U (en) | Stable-phase cable with good waterproof property | |
| CN202189612U (en) | Lightning protection water-blocking power cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20160811 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |