CN112922064B - Slotting device for burying submarine cable - Google Patents
Slotting device for burying submarine cable Download PDFInfo
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- CN112922064B CN112922064B CN202110181401.1A CN202110181401A CN112922064B CN 112922064 B CN112922064 B CN 112922064B CN 202110181401 A CN202110181401 A CN 202110181401A CN 112922064 B CN112922064 B CN 112922064B
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- rotary
- pressure head
- cut high
- cut
- pressure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/10—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
- E02F5/104—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables for burying conduits or cables in trenches under water
- E02F5/109—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables for burying conduits or cables in trenches under water using rotating digging elements
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/10—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
- E02F5/104—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables for burying conduits or cables in trenches under water
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
- H02G1/10—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle in or under water
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a slotting device for burying a submarine cable, and aims to overcome the defects that when the submarine cable is laid and slotted, a drill bit is easy to block, and the normal slotting is influenced. The rotary-cut high-pressure water jet cutting machine comprises a mounting frame and a row of rotary-cut high-pressure heads arranged on the mounting frame, wherein the rotary-cut high-pressure heads are of a conical structure, a plurality of tooth sheets are arranged on the outer wall of each rotary-cut high-pressure head, a plurality of high-pressure water flushing pipes are arranged in the rotary-cut high-pressure heads, the opening ends of the high-pressure water flushing pipes are exposed out of the outer wall of each rotary-cut high-pressure head, hydraulic motors are arranged on the mounting frame and correspond to the rotary-cut high-pressure heads, and rotating shafts are connected between the rotary-cut high-pressure heads and output shafts of the hydraulic motors. The slotting device for submarine cable embedding is not easy to generate clamping stagnation during submarine slotting operation, and the smooth slotting is ensured.
Description
Technical Field
The invention relates to a submarine cable burying technology, in particular to a slotting device for submarine cable burying.
Background
A submarine cable is a conductor laid on the seabed which is wrapped with an insulating material. Submarine cables are divided into submarine communication cables and submarine power cables. The submarine communication cable is mainly used for communication service; the submarine power cable is mainly used for transmitting high-power electric energy underwater, has the same effect as an underground power cable, and is different from the submarine power cable in application occasions and laying modes. Deep burying protection is needed in the process of laying submarine cables, so that grooving operation needs to be carried out on the seabed before laying, a cable laying ship is generally adopted to lift the grooving device to sink to the seabed during grooving operation, the seabed is grooved by a drill bit arranged on the grooving device, and when the drill bit touches hard rocks, the clamping phenomenon can occur, so that the normal grooving operation is influenced.
Disclosure of Invention
The invention overcomes the defects that the clamping stagnation of a drill bit is easy to occur when the submarine cable is laid and grooved, and the normal grooving is influenced, and provides the grooving device for burying the submarine cable.
In order to solve the technical problem, the invention adopts the following technical scheme: the utility model provides a submarine cable buries underground and uses fluting device, includes the mounting bracket, installs a list of rotary-cut high pressure head on the mounting bracket, and rotary-cut high pressure head is the toper structure, installs a plurality of bits on the rotary-cut high pressure head outer wall, installs a plurality of high pressure flushing pipes in the rotary-cut high pressure head, and high pressure flushing pipe open end exposes rotary-cut high pressure head outer wall, corresponds with rotary-cut high pressure head on the mounting bracket and installs hydraulic motor, connects the pivot between rotary-cut high pressure head and the hydraulic motor output shaft.
During submarine cable laying slotting construction, a cable laying ship lifts the mounting frame to sink to the seabed, high-pressure oil on the cable laying ship is introduced into the hydraulic motor, an output shaft of the hydraulic motor rotates to drive the rotating shaft and the rotary-cut high-pressure head to rotate together, the rotary-cut high-pressure head rotates to carry out rotary-cut slotting on the seabed, and simultaneously, high-pressure water is ejected forwards through the high-pressure flushing pipe to flush out silt generated in the rotary-cut process, and the rotary-cut high-pressure flushing is linked to avoid the silt from falling into a slot to influence the slotting effect. And a row of rotary-cut high pressure heads are arranged on the mounting frame, so that the slotting depth is greatly increased, and the protection effect is good after the submarine cable is laid. The rotary cutting high-pressure head is provided with a plurality of tooth sheets on the outer wall, which is beneficial to rock drilling, and the hydraulic motor is adopted, so that the torque of the hydraulic motor is large, and the rotary cutting high-pressure head is not easy to generate clamping stagnation in the grooving process. The slotting device for submarine cable embedding is not easy to generate clamping stagnation during submarine slotting operation, and the smooth slotting is ensured.
Preferably, a row of rotary cutting high-pressure heads are arranged in a manner of deviating backwards from top to bottom in sequence. The structure is beneficial to discharging silt generated after rotary cutting to the outside of the tank.
Preferably, the front end of the rotary cutting high pressure head is arranged in an upward inclined manner, and the axis of the rotary cutting high pressure head and the horizontal included angle are acute angles. The rotary cutting high-pressure head arranged obliquely is favorable for the water flow jetted by the high-pressure flushing pipe to upwards jet out silt to be sprayed out of the tank.
Preferably, a water through column is installed in the rotary-cutting high-pressure head, an installation hole is formed in the water through column, a rotating shaft penetrates through the installation hole, an annular water cavity is formed in the water through column, the high-pressure flushing pipe is communicated with the annular water cavity, a fixed disc is installed at the rear end of the water through column in a rotating mode, the fixed disc is fixedly installed on the installation frame, a water through hole communicated with the annular water cavity is formed in the fixed disc, and the water through hole is connected with a water delivery pipe.
The water passing column and the rotary-cut high-pressure head rotate together, the end part of the water passing column is rotatably installed on the fixed disc, and high-pressure water flow is sent into the annular water cavity through the water feeding pipe on the fixed disc.
Preferably, a positioning hole is formed in the rotary-cut high-pressure head and close to the front part of the rotary-cut high-pressure head, a plurality of deformable clamping seats are uniformly arranged on the inner wall of the positioning hole, a limiting bulge is arranged on the outer wall of the rotating shaft and abutted against the clamping seats, a plurality of explosive cartridges are arranged in the rotary-cut high-pressure head, explosives are filled in the explosive cartridges, primer contacts for igniting the explosives are arranged on the outer wall of the explosive cartridges, ejection rods are arranged in the rotary-cut high-pressure head and in one-to-one correspondence with the primer contacts, a separation disc is arranged between the ejection rods and the primer contacts on the rotating shaft, a pre-tightening spring is arranged between the ejection rods and the rotary-cut high-pressure head, the edge of the separation disc is provided with a avoidance groove, the avoidance groove and the ejection rods are arranged in a staggered manner, the ejection rods abut against the separation disc, and impact wave holes are formed in the outer wall of the rotary-cut high-pressure head and the explosive cartridges; when the rotary-cut high-pressure head grooving process is stopped due to obstruction, the torque force of the limiting protrusion on the rotating shaft enables the clamping seat to deform, the deformed clamping seat loses the limitation on the limiting protrusion, the rotating shaft rotates by an angle relative to the rotary-cut high-pressure head to abut against another clamping seat, the avoiding groove on the partition plate slides over the ejection rod in the process, the ejection rod is ejected to the primer contact, the end part of the ejection rod impacts the primer contact, the explosive is detonated, and the impact wave generated by explosive explosion explodes the grooving position of the rotary-cut high-pressure head, so that the rotary-cut high-pressure head can rotate to perform grooving conveniently.
When the rotary-cut high-pressure head encounters hard rocks in the grooving process, resistance is increased to cause the rotary-cut high-pressure head to stop rotating, the torque force of the limiting protrusion on the rotating shaft enables the clamping seat to deform, the rotating shaft and the rotary-cut high-pressure head rotate mutually, the avoiding groove on the separating disc slides through the ejection rod, the ejection rod ejects and impacts the primer contact, the explosive is detonated, shock waves generated by explosive explosion explode the hard rocks, and the rotary-cut high-pressure head can conveniently rotate to carry out rotary-cut grooving after the explosion. Through the structure, the clamping stagnation phenomenon of the rotary-cut high-pressure head is avoided, and the smooth operation of the groove is further ensured.
Preferably, the clamping seat is of a V-shaped structure, the two ends of the clamping seat are provided with connecting lugs, and the connecting lugs are fixedly connected with the inner wall of the positioning hole. The V-shaped clamping seat provides certain supporting force and is convenient to deform, and the connecting lug is convenient to see the connection between the clamping seat and the inner wall of the positioning hole.
Preferably, a positioning groove is arranged at the inner front end of the rotary cutting high-pressure head, and the front end of the rotating shaft is rotatably inserted in the positioning groove. The positioning groove is convenient for positioning the end part of the rotating shaft.
Preferably, a positioning sleeve is arranged in the rotary cutting high-pressure head and corresponds to the ejection rod, one end of the ejection rod is inserted into the positioning sleeve, and the pre-tightening spring is arranged in the positioning sleeve. The locating sleeve is convenient for the installation of ejection rod and pretension spring.
Compared with the prior art, the invention has the beneficial effects that: the slotting device for submarine cable embedding is not easy to generate clamping stagnation during submarine slotting operation, and the smooth slotting is ensured.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
figure 2 is a cross-sectional view of the rotary cutting high pressure head of the present invention;
figure 3 is a partial cross-sectional view of the location of the rotational atherectomy high pressure head pilot hole of the present invention;
in the figure: 1. mounting bracket, 2, rotary-cut high pressure head, 3, tooth piece, 4, rotary-cut piece, 5, high-pressure flushing pipe, 6, hydraulic motor, 7, pivot, 8, water passing column, 9, mounting hole, 10, annular water cavity, 11, fixed disk, 12, water passing hole, 13, water feeding pipe, 14, oil liquid pipe, 15, support, 16, locating hole, 17, cassette, 18, spacing arch, 19, explosive cartridge, 20, primer contact, 21, ejection rod, 22, partition plate, 23, pretension spring, 24, avoidance groove, 25, engaging lug, 26, locating groove, 27, locating sleeve.
Detailed Description
The technical scheme of the invention is further described in detail by the specific embodiments and the accompanying drawings:
example (b): the utility model provides a submarine cable buries underground and uses fluting device (see attached figure 1, attached figure 2, attached figure 3), which comprises a mounting bracket 1, install a list of rotary-cut high pressure head 2 on the mounting bracket, rotary-cut high pressure head is the toper structure, a plurality of teeth 3 of rotary-cut high pressure head outer wall mounting, rotary-cut high pressure head front end is equipped with triangular rotary-cut piece 4, install a plurality of high pressure wash pipes 5 in the rotary-cut high pressure head, high pressure wash pipe open end exposes rotary-cut high pressure head outer wall, correspond with rotary-cut high pressure head on the mounting bracket and install hydraulic motor 6, be connected pivot 7 between rotary-cut high pressure head and the hydraulic motor output shaft.
The rotary cutting high pressure heads are arranged in a line and are sequentially deviated backwards from top to bottom. The front end of the rotary cutting high pressure head is arranged in an upward inclined mode, an included angle between the axis of the rotary cutting high pressure head and the horizontal plane is an acute angle, and the included angle ranges from 5 degrees to 10 degrees. The rotary-cut high pressure head is internally provided with a water through column 8, the water through column is provided with a mounting hole 9, a rotating shaft penetrates through the mounting hole, an annular water cavity 10 is arranged in the water through column, the high-pressure flushing pipe is communicated with the annular water cavity, the rear end of the water through column is rotatably provided with a fixed disc 11, the fixed disc is fixedly mounted on the mounting frame, the fixed disc is provided with a water through hole 12 communicated with the annular water cavity, and the water through hole is connected with a water delivery pipe 13. The hydraulic motor is connected with the oil liquid pipe 14, and the water supply pipe and the oil liquid pipe are both connected to the cable laying ship, and the cable laying ship provides high-pressure water and high-pressure oil liquid. The mounting bracket is correspondingly provided with a support 15 with the rotating shaft, and the rotating shaft is rotatably arranged on the support.
A positioning hole 16 is formed in the rotary cutting high-pressure head and close to the front portion of the rotary cutting high-pressure head, a plurality of deformable clamping seats 17 are uniformly distributed and installed on the inner wall of the positioning hole, and a limiting bulge 18 is arranged on the outer wall of the rotating shaft and abuts against the clamping seats. A plurality of explosive cartridges 19 are arranged in the rotary cutting high-pressure head. The cassette sets up six, and spacing protruding equipartition sets up two, and the installation of explosive cartridge case is three. The explosive cartridge is filled with explosives, the outer wall of the explosive cartridge is provided with a primer contact 20 for detonating the explosives, ejection rods 21 are arranged in the rotary-cut high-pressure head and correspond to the primer contact one by one, a separation disc 22 is arranged between the ejection rod and the primer contact on the rotating shaft, a pre-tightening spring 23 is arranged between the ejection rod and the rotary-cut high-pressure head, the edge of the separation disc is provided with an avoidance groove 24 which is staggered with the ejection rod, the ejection rod is abutted against the separation disc, and the outer wall of the rotary-cut high-pressure head and the explosive cartridge are correspondingly provided with shock wave holes; when the rotary-cut high pressure head is blocked to stop rotating in the grooving process, the torque force of the limiting protrusion on the rotating shaft enables the clamping seat to deform, the deformed clamping seat loses the limitation on the limiting protrusion, the rotating shaft rotates relative to the rotary-cut high pressure head by an angle and abuts against another clamping seat, the avoiding groove in the partition disc slides over the ejection rod in the process, the ejection rod is ejected towards the primer contact, the end part of the ejection rod impacts the primer contact, the explosive is detonated, the impact wave generated by explosive explosion explodes the grooving position of the rotary-cut high pressure head, and the rotary-cut high pressure head is convenient to rotate to perform grooving.
The clamping seat is of a V-shaped structure, the two ends of the clamping seat are provided with connecting lugs 25, and the connecting lugs are fastened and connected with the inner wall of the positioning hole. The rotary cutting high pressure head is provided with a positioning groove 26 at the front end, and the front end of the rotating shaft is rotatably inserted in the positioning groove. A positioning sleeve 27 is arranged in the rotary cutting high-pressure head and corresponds to the ejection rod, one end of the ejection rod is inserted into the positioning sleeve, and a pre-tightening spring is arranged in the positioning sleeve.
During submarine cable laying slotting construction, a cable laying ship lifts the mounting frame to sink to the seabed, high-pressure oil on the cable laying ship is introduced into the hydraulic motor, an output shaft of the hydraulic motor rotates to drive the rotating shaft and the rotary-cut high-pressure head to rotate together, the rotary-cut high-pressure head rotates to carry out rotary-cut slotting on the seabed, and simultaneously, high-pressure water is ejected forwards through the high-pressure flushing pipe to flush out silt generated in the rotary-cut process, and the rotary-cut high-pressure flushing is linked to avoid the silt from falling into a slot to influence the slotting effect. And a row of rotary-cut high pressure heads are arranged on the mounting frame, so that the slotting depth is greatly increased, and the protection effect is good after the submarine cable is laid. The rotary cutting high-pressure head is provided with a plurality of tooth sheets on the outer wall, which is beneficial to rock drilling, and the hydraulic motor is adopted, so that the torque of the hydraulic motor is large, and the rotary cutting high-pressure head is not easy to generate clamping stagnation in the grooving process.
When hard rocks are encountered in the rotary-cutting high-pressure head grooving process, resistance is increased to cause the rotary-cutting high-pressure head to stop rotating, the torque force of the limiting protrusion on the rotating shaft enables the clamping seat to deform, the rotating shaft and the rotary-cutting high-pressure head rotate mutually, the avoiding groove on the separating disc slides through the ejection rod, the ejection rod ejects and impacts on the primer contact to detonate the explosive, the shock wave generated by explosion of the explosive explodes the hard rocks, and the rotary-cutting high-pressure head can conveniently continue to rotate to perform rotary-cutting grooving after blasting. Through the structure, the clamping stagnation phenomenon of the rotary-cut high-pressure head is avoided, and the smooth operation of the groove is further ensured.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the appended claims.
Claims (7)
1. A slotting device for burying a submarine cable is characterized by comprising a mounting frame and a row of rotary-cut high-pressure heads mounted on the mounting frame, wherein the rotary-cut high-pressure heads are of a conical structure, a plurality of tooth sheets are mounted on the outer wall of each rotary-cut high-pressure head, a plurality of high-pressure flushing pipes are mounted in the rotary-cut high-pressure heads, the open ends of the high-pressure flushing pipes are exposed out of the outer wall of each rotary-cut high-pressure head, hydraulic motors are mounted on the mounting frame and correspond to the rotary-cut high-pressure heads, and a rotating shaft is connected between each rotary-cut high-pressure head and an output shaft of each hydraulic motor; a positioning hole is formed in the rotary-cut high-pressure head and close to the front part of the rotary-cut high-pressure head, a plurality of deformable clamping seats are uniformly arranged on the inner wall of the positioning hole, a limiting bulge is arranged on the outer wall of the rotating shaft and abuts against the clamping seats, a plurality of explosive cartridges are arranged in the rotary-cut high-pressure head, explosives are filled in the explosive cartridges, primer contacts for igniting the explosives are arranged on the outer wall of the explosive cartridges, ejection rods are arranged in the rotary-cut high-pressure head and correspond to the primer contacts one by one, separation discs are arranged between the ejection rods and the primer contacts on the rotating shaft, pre-tightening springs are arranged between the ejection rods and the rotary-cut high-pressure head, avoidance grooves are formed in the edges of the separation discs, the avoidance grooves and the ejection rods are arranged in a staggered mode, the ejection rods abut against the separation discs, and impact wave holes are formed in the outer wall of the rotary-cut high-pressure head and correspond to the explosive cartridges; when the rotary-cut high-pressure head grooving process is stopped due to obstruction, the torque force of the limiting protrusion on the rotating shaft enables the clamping seat to deform, the deformed clamping seat loses the limitation on the limiting protrusion, the rotating shaft rotates by an angle relative to the rotary-cut high-pressure head to abut against another clamping seat, the avoiding groove on the partition plate slides over the ejection rod in the process, the ejection rod is ejected to the primer contact, the end part of the ejection rod impacts the primer contact, the explosive is detonated, and the impact wave generated by explosive explosion explodes the grooving position of the rotary-cut high-pressure head, so that the rotary-cut high-pressure head can rotate to perform grooving conveniently.
2. The slotting device for burying submarine cables according to claim 1, wherein a row of rotary-cut high-pressure heads are arranged to be offset rearward in sequence from top to bottom.
3. The slotting device for burying submarine cables according to claim 1, wherein the rotary-cut high-voltage head has an upward inclined front end, and the axis of the rotary-cut high-voltage head forms an acute angle with the horizontal.
4. The slotting device for burying the submarine cable according to claim 1, wherein a water through column is rotatably cut in the high-pressure head, mounting holes are formed in the water through column, the rotating shaft penetrates through the mounting holes, an annular water cavity is formed in the water through column, high-pressure flushing pipes are communicated with the annular water cavity, a fixing disc is rotatably mounted at the rear end of the water through column, the fixing disc is fixedly mounted on the mounting frame, water through holes communicated with the annular water cavity are formed in the fixing disc, and the water through holes are connected with a water supply pipe.
5. The slotting device for burying submarine cables as claimed in claim 1, wherein the clamping seat is in a V-shaped structure, and the two ends of the clamping seat are provided with connecting lugs which are tightly connected with the inner walls of the positioning holes.
6. The slotting device for burying the submarine cable according to claim 1, wherein a positioning groove is formed at the front end position in the rotary-cutting high-pressure head, and the front end of the rotating shaft is rotatably inserted into the positioning groove.
7. The slotting device for burying the submarine cable according to claim 1, wherein a positioning sleeve is arranged in the rotary-cut high-pressure head and corresponds to the ejection rod, one end of the ejection rod is inserted into the positioning sleeve, and the pre-tightening spring is arranged in the positioning sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110181401.1A CN112922064B (en) | 2021-02-09 | 2021-02-09 | Slotting device for burying submarine cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110181401.1A CN112922064B (en) | 2021-02-09 | 2021-02-09 | Slotting device for burying submarine cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112922064A CN112922064A (en) | 2021-06-08 |
| CN112922064B true CN112922064B (en) | 2022-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110181401.1A Active CN112922064B (en) | 2021-02-09 | 2021-02-09 | Slotting device for burying submarine cable |
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| CN (1) | CN112922064B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1203605A (en) * | 1967-09-06 | 1970-08-26 | Rock Fall Company Ltd | Method of and explosive charge-laying vessel for excavating underwater trenches |
| CN201433411Y (en) * | 2009-01-23 | 2010-03-31 | 张本照 | Dual-purpose machine for yam gouging and cable rope burying |
| CN104314127B (en) * | 2014-04-23 | 2016-06-15 | 中国石油大学(华东) | A kind of 500 meters of depth of water hard soil undersea pipe-layings machinery and water-jet combined type rotation plough |
| CN111733912B (en) * | 2020-07-07 | 2022-05-06 | 天津市精研工程机械传动有限公司 | Underwater trencher with multiple stranding cage ladder structures |
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2021
- 2021-02-09 CN CN202110181401.1A patent/CN112922064B/en active Active
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| CN112922064A (en) | 2021-06-08 |
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Effective date of registration: 20221128 Address after: 316100 No.10, TIYU Road, Lincheng street, Dinghai District, Zhoushan City, Zhejiang Province Patentee after: ZHEJIANG MARINE DEVELOPMENT Research Institute Patentee after: ZHEJIANG ZHOUSHAN INSTITUTE OF OCEANIC ELECTRIC POWER TRANSMISSION, Co.,Ltd. Patentee after: STATE GRID ZHEJIANG ELECTRIC POWER CO., LTD. ZHOUSHAN POWER SUPPLY Co. Address before: 316100 No.10, TIYU Road, Lincheng street, Dinghai District, Zhoushan City, Zhejiang Province Patentee before: ZHEJIANG MARINE DEVELOPMENT Research Institute |
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