CN110829338A - Underwater cable protection device - Google Patents
Underwater cable protection device Download PDFInfo
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- CN110829338A CN110829338A CN201911108494.4A CN201911108494A CN110829338A CN 110829338 A CN110829338 A CN 110829338A CN 201911108494 A CN201911108494 A CN 201911108494A CN 110829338 A CN110829338 A CN 110829338A
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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
- H02G9/00—Installations of electric cables or lines in or on the ground or water
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Abstract
The invention discloses an underwater cable protection device, which is characterized by comprising a protection device body, wherein the protection device body comprises a flexible guide pipe, a rigid positioning pipe and a flexible anti-bending pipe which are sequentially connected from top to bottom, the flexible guide pipe is a conical pipe with gradually increased outer diameter from top to bottom, the maximum outer diameter of the flexible guide pipe is smaller than the inner diameter of a mounting hole which is arranged on the tower cylinder wall and used for penetrating and mounting an underwater cable, the rigid positioning pipe is a cylindrical pipe with the same outer diameter at each position, the outer diameter of the rigid positioning pipe is equal to the maximum outer diameter of the flexible guide pipe, the flexible anti-bending pipe is a conical pipe with gradually decreased outer diameter from top to bottom, the maximum outer diameter of the flexible anti-bending pipe is larger than the inner diameter of the mounting, the flexible guide tube is arranged in the tower barrel, the rigid positioning tube is arranged in the mounting hole, and the flexible anti-bending tube is positioned outside the tower barrel. The underwater cable protection device has the advantages of being simple in structure, effectively protecting underwater cables, and ensuring the service life of the underwater cables.
Description
Technical Field
The invention relates to the field of ocean engineering, in particular to an underwater cable protection device.
Background
With the increasing demand of our country for energy, the development of ocean renewable energy such as offshore wind power generation is also enhanced, and submarine cables for power transmission such as submarine cables are more and more widely applied in the power transmission process of offshore wind power generation. Offshore wind power generation is primarily from a turbine-driven generator on a wind turbine, with one or more generators connected together by a submarine cable and the power delivered to shore by the submarine cable.
At present, aiming at a single-pile tower drum type offshore wind power generation system, one end of an underwater cable for power transmission is used for connecting a generator in a tower drum, the tower drum is usually embedded in the sea bottom, and a mounting hole is drilled in the wall of the tower drum for the underwater cable to penetrate so as to provide a certain supporting effect for the underwater cable. In the structure, because the underwater cable is mainly supported by the tower cylinder wall, the underwater cable can move under the influence of tide and severe weather, and the outer wall of the underwater cable, which is in contact with the tower cylinder wall, can rub against the mounting hole in the moving process, so that the outer wall of the underwater cable is damaged, particularly, the edge of the mounting hole easily causes the underwater cable to bend, the underwater cable is damaged, the service life of the underwater cable is influenced, and the normal operation of the offshore power generation system is influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing an underwater cable protection device which has a simple structure, can effectively protect an underwater cable and can ensure the service life of the underwater cable.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an underwater cable protection device comprises a protection device body provided with a central through hole for an underwater cable to pass through for installation, wherein the protection device body comprises a flexible guide pipe, a rigid positioning pipe and a flexible anti-bending pipe which are sequentially connected from top to bottom, the flexible guide pipe is a conical pipe with gradually increased outer diameter from top to bottom, the maximum outer diameter of the flexible guide pipe is smaller than the inner diameter of an installation hole for the underwater cable to pass through for installation, the rigid positioning pipe is a cylindrical pipe with the same outer diameter at each position, the outer diameter of the rigid positioning pipe is equal to the maximum outer diameter of the flexible guide pipe, the flexible anti-bending pipe is a conical pipe with gradually decreased outer diameter from top to bottom, the maximum outer diameter of the flexible anti-bending pipe is larger than the inner diameter of the installation hole, and the rigid positioning pipe is provided with a positioning mechanism for realizing the stable installation of the rigid positioning pipe in the installation hole, after the installation is finished, the flexible guide pipe is arranged in the tower cylinder, the rigid positioning pipe is arranged in the installation hole, and the flexible anti-bending pipe is positioned outside the tower cylinder.
The positioning mechanism comprises at least one group of positioning components, each positioning component consists of a plurality of positioning units which are arranged around the circumferential wall of the rigid positioning pipe, and the plurality of positioning units are arranged at intervals; each positioning unit comprises a groove vertically arranged on the outer side wall of the rigid positioning pipe and a rigid positioning block arranged in the groove, the length of the rigid positioning block is smaller than that of the groove, the upper end of the rigid positioning block is rotatably arranged in the groove and positioned at the upper part of the groove, and an elastic supporting piece is arranged between the inner end surface of the rigid positioning block and the bottom end surface of the groove; under the condition of no external force, the lower ends of the rigid positioning blocks are tilted outwards under the action of the supporting force of the elastic supporting piece, and the maximum circular ring radius formed by outward tilting of the lower ends of a plurality of rigid positioning blocks in each group of positioning assemblies is larger than the inner diameter of the mounting hole. The positioning mechanism is simple in structure, stable in positioning, and convenient for perforation installation, the upper portion of the rigid positioning pipe is guided into the installation hole of the tower barrel through the flexible guide pipe, the rigid positioning pipe is in the process of entering the installation hole, the hole wall exerts an extrusion force on the rigid positioning block, the tilting end of the rigid positioning block draws close to the bottom end face of the groove under the action of the extrusion force and is embedded into the groove, the elastic supporting piece is extruded, when the rigid positioning block for realizing positioning completely enters the tower barrel through the installation hole, the extrusion force disappears, the elastic supporting piece resets, a supporting force is provided for the lower end of the rigid positioning block, so that the end tilts, at the moment, due to the effect of the tilting end of the rigid positioning block, downward action force cannot pull out the rigid positioning pipe, and stable installation of the rigid positioning pipe is realized.
The upper end of the rigid positioning block is connected with an installation shaft in a left-right penetrating mode, the upper end of the rigid positioning block is rotatably connected with the installation shaft, and two ends of the installation shaft are fixedly installed on the left side wall and the right side wall of the groove. The rotatable connection structure for the upper end of the rigid positioning block is simple and low in cost.
The elastic supporting piece is a spring, one end of the spring is fixedly installed on the inner end face of the rigid positioning block, and the other end of the spring is fixedly installed on the bottom end face of the groove. The spring is selected as the elastic supporting piece, so that the structure is simple, the installation is convenient, and the cost is low.
The elastic supporting piece is an elastic supporting ring, one side wall of the elastic supporting ring is fixedly arranged on the inner end face of the rigid positioning block, and the other side wall of the elastic supporting ring is fixedly arranged on the bottom end face of the groove. The elastic support ring is selected as the elastic support piece, so that the structure is simple, the installation is convenient, and the cost is low.
The inner end face of the rigid positioning block is provided with a mounting groove, and one side wall of the elastic support ring is embedded and fixedly mounted in the mounting groove. The mounting groove can ensure more stable mounting of the elastic support ring.
The positioning mechanism comprises at least one group of positioning components, each positioning component consists of a plurality of positioning units which are arranged around the circumferential wall of the rigid positioning pipe, and the plurality of positioning units are arranged at intervals; each positioning unit comprises a rigid positioning buckle which is arranged on the outer side wall of the rigid positioning pipe in a protruding mode, an installation groove for installing the rigid positioning buckle is formed in the outer side wall of the rigid positioning pipe, the rigid positioning buckle is installed in the installation groove, an elastic supporting piece for enabling the rigid positioning buckle to protrude outwards or to be sunken inwards is arranged between the rigid positioning buckle and the installation groove, the rigid positioning buckle comprises a leading-in installation part and a limiting part which are sequentially arranged from top to bottom, the height value of the leading-in installation part is gradually increased from top to bottom, the height of the limiting part is consistent with the maximum height of the leading-in installation part, and the bottom end face of the limiting part is a flat end face; under the condition of no external force, the rigid positioning buckles protrude outwards under the supporting force of the elastic supporting piece, the maximum radius of a circular ring formed by the protrusions of the rigid positioning buckles in each group of positioning assemblies is larger than the inner diameter of the mounting hole, and the distance value from the topmost end, protruding outside, of the guide-in mounting part to the outer side wall of the rigid positioning pipe is 0. The positioning mechanism is simple in structure, stable in positioning and convenient for perforation installation, the upper portion of the rigid positioning pipe is guided into the installation hole of the tower barrel through the flexible guide pipe, the rigid positioning pipe is in the process of entering the installation hole, the hole wall exerts an extrusion force on the guiding installation portion of the rigid positioning buckle, the rigid positioning buckle is under the action of the extrusion force, the rigid positioning buckle is integrally and slowly embedded into the installation groove, the elastic supporting piece is extruded, when the rigid positioning buckle for realizing positioning completely enters the tower barrel through the installation hole, the extrusion force disappears, the elastic supporting piece resets, the rigid positioning buckle is ejected outwards, the bottom end face of the limiting portion abuts against the inner wall of the tower barrel, the top end face is a flat end face, the rigid positioning pipe cannot be pulled out due to the downward action force, and stable installation of the rigid positioning pipe is realized.
The outer side end face of the leading-in mounting part is a leading-in face which is an arc face or an inclined face. The whole protection device is convenient to mount smoothly and in a labor-saving manner.
And a limiting mechanism used for stably installing the rigid positioning buckle in the installation groove is arranged between the rigid positioning buckle and the installation groove. The stable installation of the rigid positioning buckle is realized through the limiting mechanism.
Stop gear including setting up rigid positioning buckle on with mounting groove matched with locating plate and embedding are fixed to be set up mounting groove in and with the limiting plate that the mounting groove sealed up, the vertical setting of locating plate be in the medial surface that rigid positioning detained on, the length of locating plate be greater than rigid positioning buckle's length, the locating plate setting be in the limiting plate with mounting groove between, the limiting plate on be provided with the confession rigid positioning buckle the through-hole that stretches out, rigid positioning buckle can the through-hole in outwards bulge or the inside sunken activity, elastic support piece set up the locating plate with mounting groove between.
The positioning mechanism comprises a plurality of groups of positioning components, and the plurality of groups of positioning components are arranged at intervals up and down. The positioning assemblies arranged at the upper and lower intervals of the plurality of groups can effectively ensure the stability of positioning and installation of the rigid positioning pipes, thereby forming stable protection for underwater cables.
The positioning mechanism comprises a plurality of groups of positioning components which are arranged at intervals from top to bottom and staggered from left to right. The positioning assemblies which are arranged at intervals up and down and staggered left and right can more effectively ensure the stability of positioning and installation of the rigid positioning pipe, so that the underwater cable is more stably protected.
The lower end of the flexible anti-bending pipe is connected with a bending limiter for the underwater cable to pass through. The lower end of the flexible anti-bending pipe is connected with a bending limiter, so that the underwater cable is protected better.
Compared with the prior art, the invention has the advantages that:
(1) the underwater cable is arranged in the protection device body formed by the flexible guide pipe, the rigid positioning pipe and the flexible bend-proof pipe in the structure in a penetrating way, and the protection device body effectively isolates the direct contact between the underwater cable and the wall of the tower barrel and protects the underwater cable;
(2) the flexible guide pipe is used for perforation guide installation and bending protection, can be bent according to a specific manhole angle during the installation and is combined with the bending rigidity of the underwater cable to form a specific bending radius, so that the underwater cable is protected from being damaged due to stress concentration of the underwater cable caused by a single force application point and over-small bending radius when passing through the device; the flexible guide pipe is a conical pipe with the outer diameter gradually increasing from top to bottom, and the device firstly enters the mounting hole from the small end during perforation, so that the device can smoothly pass through the mounting hole conveniently, and meanwhile, the bending radius meeting the requirements of an underwater cable is formed better during bending;
(3) the positioning mechanism arranged on the rigid positioning pipe ensures that the rigid positioning pipe can be stably installed in the installation hole of the tower barrel, and ensures the installation stability of the whole device;
(4) the underwater cable arranged at the section of the underwater cable is in gentle arc transition through the flexible anti-bending pipe, so that the phenomenon of excessive bending caused by the fact that the position of the installation hole is close to the seabed is avoided, and the damage caused by the fact that the bending radius of the underwater cable is too small due to the fact that the bending space of the rear part of the fixing device is small and the underwater cable is close to the seabed is also avoided; the flexible anti-bending pipe is a conical pipe with the outer diameter gradually reduced from top to bottom, the maximum outer diameter of the flexible anti-bending pipe is larger than the inner diameter of the mounting hole, and the flexible anti-bending pipe plays a limiting role after the whole device is pulled in place.
Drawings
FIG. 1 is a schematic overall structure diagram of a fifth embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a rigid positioning tube according to a first embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a rigid positioning tube according to a third embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a rigid positioning tube according to a fourth embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a rigid positioning tube according to a fifth embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a rigid positioning tube according to a second embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of the upper end of the rigid positioning block being mounted on the rigid positioning tube;
FIG. 8 is a schematic front view of a protection device according to a fifth embodiment of the present invention;
FIG. 9 is a schematic structural view of a tower mounted with a fifth mating device according to an embodiment of the present invention;
FIG. 10 is an enlarged view of the structure of FIG. 9 at E;
FIG. 11 is a schematic structural view of a tower according to the present invention;
FIG. 12 is a schematic cross-sectional view of the rigid retainer clip of the present invention mounted on a rigid retainer tube;
fig. 13 is an enlarged schematic view of the structure at F in fig. 12;
FIG. 14 is a schematic structural view of a rigid retainer clip according to the present invention;
FIG. 15 is a schematic view of the overall structure of the ninth embodiment of the present invention;
FIG. 16 is a schematic structural view of a rigid positioning tube according to a sixth embodiment of the present invention;
FIG. 17 is a schematic structural view of a rigid positioning tube in a seventh embodiment of the present invention;
FIG. 18 is a schematic structural view of a rigid positioning tube in an eighth embodiment of the present invention;
FIG. 19 is a schematic structural diagram of a rigid positioning tube in a ninth embodiment of the invention;
fig. 20 is a schematic front view of a protection device body according to a ninth embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The first embodiment is as follows: as shown in the figure, the underwater cable protection device comprises a protection device body provided with a central through hole A1 for allowing an underwater cable A to pass through for installation, the protection device body comprises a flexible guide pipe 1, a rigid positioning pipe 2 and a flexible anti-bending pipe 3 which are sequentially connected from top to bottom, the flexible guide pipe 1 is a conical pipe with gradually increased outer diameter from top to bottom, the maximum outer diameter of the flexible guide pipe 1 is smaller than the inner diameter of an installation hole B1 for allowing the underwater cable A to pass through for installation, the rigid positioning pipe 2 is a cylindrical pipe with the same outer diameter at each position, the outer diameter of the rigid positioning pipe 2 is equal to the maximum outer diameter of the flexible guide pipe 1, the flexible anti-bending pipe 3 is a conical pipe with gradually decreased outer diameter from top to bottom, the maximum outer diameter of the flexible anti-bending pipe 3 is larger than the inner diameter of the installation hole B1, a positioning mechanism for stably installing the rigid positioning pipe in, after the installation is finished, the flexible guide pipe 1 is arranged in the tower B, the rigid positioning pipe 2 is arranged in the mounting hole B1, and the flexible anti-bending pipe 3 is located outside the tower B.
In this embodiment, the positioning mechanism includes at least one set of positioning components, the positioning components are composed of a plurality of positioning units C arranged around the circumferential wall of the rigid positioning pipe 2, and the plurality of positioning units C are arranged at intervals; each positioning unit C comprises a groove C1 vertically arranged on the outer side wall of the rigid positioning pipe 1 and a rigid positioning block C2 arranged in the groove, the length of the rigid positioning block C2 is smaller than that of the groove C1, the upper end of the rigid positioning block C2 is rotatably arranged in the groove C1 and is positioned at the upper part of the groove C1, and an elastic support piece C3 is arranged between the inner end face of the rigid positioning block C2 and the bottom end face of the groove C1; under the condition of no external force, the lower ends of the rigid positioning blocks C2 are tilted outwards under the supporting force of the elastic supporting piece C3, and the maximum circular radius formed by outward tilting of the lower ends of the rigid positioning blocks C2 in each group of positioning assemblies is larger than the inner diameter of the mounting hole B1.
In this embodiment, a mounting shaft C4 is threaded through the upper end of the rigid positioning block C2 from left to right, the upper end of the rigid positioning block C2 is rotatably connected to the mounting shaft C4, and the two ends of the mounting shaft C4 are fixedly mounted on the left and right side walls of the groove C1.
In this embodiment, the elastic supporting piece C3 is an elastic supporting ring, one side wall of which is fixedly installed on the inner end surface of the rigid positioning block C2, and the other side wall of which is fixedly installed on the bottom end surface of the groove C1.
In this embodiment, the inner end surface of the rigid positioning block C2 is provided with a mounting groove C21, and one side wall of the elastic support ring is embedded and fixedly mounted in the mounting groove C21.
In this embodiment, the lower end of the flexible bend preventing tube 3 is connected to a bend limiter 4 through which the underwater cable a is installed.
Example two: the other parts are the same as the first embodiment, except that the elastic supporting member C3 is a spring, one end of the spring is fixedly installed on the inner end surface of the rigid positioning block C2, and the other end of the spring is fixedly installed on the bottom end surface of the groove C1.
Example three: the other parts are the same as the first embodiment or the second embodiment, and the difference is that the positioning mechanism comprises a plurality of groups of positioning assemblies which are arranged at intervals up and down.
In this embodiment, the positioning elements are in 2 groups.
Example four: the other parts are the same as the first embodiment or the second embodiment, and the difference is that the positioning mechanism comprises a plurality of groups of positioning assemblies which are arranged in a vertically spaced and horizontally staggered manner.
In this embodiment, the positioning assemblies are 2 groups, and the 2 groups of positioning assemblies are divided into a first positioning assembly and a second positioning assembly from top to bottom, wherein the first positioning assembly and the second positioning assembly are vertically spaced and are arranged in a staggered manner from left to right.
Example five: the other parts are the same as the first embodiment or the second embodiment, and the difference is that the positioning mechanism comprises a plurality of groups of positioning assemblies which are arranged in a vertically spaced and horizontally staggered manner.
In this specific embodiment, the positioning assemblies are 4 groups, and the 4 groups of positioning assemblies are divided into a first positioning assembly, a second positioning assembly, a third positioning assembly and a fourth positioning assembly from top to bottom, wherein the first positioning assembly and the third positioning assembly are arranged at intervals from top to bottom, the second positioning assembly and the fourth positioning assembly are arranged at intervals from top to bottom, the first positioning assembly and the second positioning assembly are arranged at intervals from top to bottom and staggered from left to right, and the third positioning assembly and the fourth positioning assembly are arranged at intervals from top to bottom and staggered from left to right.
Example six: the other parts are the same as the first embodiment, and the difference is that the positioning mechanism comprises a group of positioning components, each positioning component consists of a plurality of positioning units C arranged along the circumferential wall of the rigid positioning pipe 2 in a surrounding way, and the positioning units C are arranged at intervals; each positioning unit C comprises a rigid positioning buckle C6 which is arranged on the outer side wall of the rigid positioning pipe 1 in a protruding mode, a mounting groove C7 used for mounting a rigid positioning buckle C6 is formed in the outer side wall of the rigid positioning pipe 1, a rigid positioning buckle C6 is mounted in the mounting groove C7, an elastic supporting piece C3 used for enabling the rigid positioning buckle C6 to protrude outwards or sink inwards is arranged between the rigid positioning buckle C6 and the mounting groove C7, the rigid positioning buckle C6 comprises a leading-in mounting portion C61 and a limiting portion C62 which are sequentially arranged from top to bottom, the height value of the leading-in mounting portion C61 is gradually increased from top to bottom, the height of the limiting portion C62 is consistent with the maximum height of the leading-in mounting portion C61, and the bottom end face C621 of the limiting portion C62; under the condition of no external force, the rigid positioning buckles C6 are protruded outwards under the supporting force of the elastic supporting pieces C3, the maximum circular ring radius formed by the protrusions of the rigid positioning buckles C6 in each group of positioning assemblies is larger than the inner diameter of the mounting hole B1, and the distance value from the topmost end, protruding outside, of the lead-in mounting part C61 to the outer side wall of the rigid positioning pipe 1 is 0.
In this embodiment, the outer end surface of the introduction mounting portion C61 is an introduction surface C611, and the introduction surface C611 is an arc surface or an inclined surface.
In this embodiment, the elastic support C3 is an elastic body, such as a spring.
In this embodiment, a position limiting mechanism for stably mounting the rigid positioning buckle C6 in the mounting groove C7 is disposed between the rigid positioning buckle C6 and the mounting groove C7.
In this embodiment, the position limiting mechanism includes a positioning plate C63 disposed on the rigid positioning buckle C6 and engaged with the mounting groove C7, and a position limiting plate C8 embedded and fixedly disposed in the mounting groove C7 and covering the mounting groove C7, the positioning plate C63 is vertically disposed on the inner end surface of the rigid positioning buckle C6, the length of the positioning plate C63 is greater than the length of the rigid positioning buckle C6, the positioning plate C63 is disposed between the position limiting plate C8 and the mounting groove C7, the position limiting plate C8 is provided with a through hole C81 through which the rigid positioning buckle C6 protrudes, the rigid positioning buckle C6 can protrude outwards or move inwards in the through hole C81, and the elastic support element C3 is disposed between the positioning plate C63 and the mounting groove C7.
In this embodiment, after the position-limiting plate C8 is embedded and installed in the installation groove C7, it can be fixed by bolts or welding, and during the specific assembly, the rigid positioning buckle C6 and the elastic supporting piece C3 are installed in the installation groove C7, and then the position-limiting plate C8 is installed.
Example seven: the other parts are the same as the sixth embodiment, and the difference is that the positioning mechanism comprises a plurality of groups of positioning assemblies which are arranged at intervals up and down.
In this embodiment, the positioning elements are in 2 groups.
Example eight: the other parts are the same as the sixth embodiment, and the difference is that the positioning mechanism comprises a plurality of groups of positioning assemblies which are arranged at intervals up and down and staggered left and right.
In this embodiment, the positioning assemblies are 2 groups, and the 2 groups of positioning assemblies are divided into a first positioning assembly and a second positioning assembly from top to bottom, wherein the first positioning assembly and the second positioning assembly are vertically spaced and are arranged in a staggered manner from left to right.
Example nine: the other parts are the same as the sixth embodiment, and the difference is that the positioning mechanism comprises a plurality of groups of positioning assemblies which are arranged at intervals up and down and staggered left and right.
In this specific embodiment, the positioning assemblies are 4 groups, and the 4 groups of positioning assemblies are divided into a first positioning assembly, a second positioning assembly, a third positioning assembly and a fourth positioning assembly from top to bottom, wherein the first positioning assembly and the third positioning assembly are arranged at intervals from top to bottom, the second positioning assembly and the fourth positioning assembly are arranged at intervals from top to bottom, the first positioning assembly and the second positioning assembly are arranged at intervals from top to bottom and staggered from left to right, and the third positioning assembly and the fourth positioning assembly are arranged at intervals from top to bottom and staggered from left to right.
Claims (10)
1. An underwater cable protection device is characterized by comprising a protection device body provided with a central through hole for an underwater cable to pass through for installation, wherein the protection device body comprises a flexible guide pipe, a rigid positioning pipe and a flexible anti-bending pipe which are sequentially connected from top to bottom, the flexible guide pipe is a conical pipe with gradually increased outer diameter from top to bottom, the maximum outer diameter of the flexible guide pipe is smaller than the inner diameter of an installation hole for the underwater cable to pass through for installation, the rigid positioning pipe is a cylindrical pipe with the same outer diameter at each position, the outer diameter of the rigid positioning pipe is equal to the maximum outer diameter of the flexible guide pipe, the flexible anti-bending pipe is a conical pipe with gradually decreased outer diameter from top to bottom, the maximum outer diameter of the flexible anti-bending pipe is larger than the inner diameter of the installation hole, and the rigid positioning pipe is provided with a positioning mechanism for stably installing the rigid positioning pipe in the installation hole, after the installation is finished, the flexible guide pipe is arranged in the tower cylinder, the rigid positioning pipe is arranged in the installation hole, and the flexible anti-bending pipe is positioned outside the tower cylinder.
2. A submarine cable protection device according to claim 1, wherein said positioning means comprises at least one positioning assembly comprising a plurality of positioning units circumferentially disposed along the circumferential wall of said rigid pipe, said plurality of positioning units being spaced apart; each positioning unit comprises a groove vertically arranged on the outer side wall of the rigid positioning pipe and a rigid positioning block arranged in the groove, the length of the rigid positioning block is smaller than that of the groove, the upper end of the rigid positioning block is rotatably arranged in the groove and positioned at the upper part of the groove, and an elastic supporting piece is arranged between the inner end surface of the rigid positioning block and the bottom end surface of the groove; under the condition of no external force, the lower ends of the rigid positioning blocks are tilted outwards under the action of the supporting force of the elastic supporting piece, and the maximum circular ring radius formed by outward tilting of the lower ends of a plurality of rigid positioning blocks in each group of positioning assemblies is larger than the inner diameter of the mounting hole.
3. An underwater cable protection device as claimed in claim 2, wherein an installation shaft is provided at left and right sides of the upper end of the rigid positioning block, the upper end of the rigid positioning block is rotatably connected to the installation shaft, and both ends of the installation shaft are fixedly installed on left and right sidewalls of the groove.
4. An underwater cable protection device as claimed in claim 2, wherein the resilient support member is a spring, one end of the spring is fixedly mounted on the inner end surface of the rigid positioning block, and the other end of the spring is fixedly mounted on the bottom end surface of the groove.
5. An underwater cable protection device as claimed in claim 2, wherein the resilient support member is a resilient support ring, one side wall of the resilient support ring is fixedly mounted on the inner end surface of the rigid positioning block, and the other side wall of the resilient support ring is fixedly mounted on the bottom end surface of the recess.
6. An underwater cable protection device as claimed in claim 5, wherein the positioning means comprises at least one set of positioning members, the positioning members comprising a plurality of positioning units circumferentially disposed along the circumferential wall of the rigid positioning pipe, the plurality of positioning units being spaced apart; each positioning unit comprises a rigid positioning buckle which is arranged on the outer side wall of the rigid positioning pipe in a protruding mode, an installation groove for installing the rigid positioning buckle is formed in the outer side wall of the rigid positioning pipe, the rigid positioning buckle is installed in the installation groove, an elastic supporting piece for enabling the rigid positioning buckle to protrude outwards or to be sunken inwards is arranged between the rigid positioning buckle and the installation groove, the rigid positioning buckle comprises a leading-in installation part and a limiting part which are sequentially arranged from top to bottom, the height value of the leading-in installation part is gradually increased from top to bottom, the height of the limiting part is consistent with the maximum height of the leading-in installation part, and the bottom end face of the limiting part is a flat end face; under the condition of no external force, the rigid positioning buckles protrude outwards under the supporting force of the elastic supporting piece, the maximum radius of a circular ring formed by the protrusions of the rigid positioning buckles in each group of positioning assemblies is larger than the inner diameter of the mounting hole, and the distance value from the topmost end, protruding outside, of the guide-in mounting part to the outer side wall of the rigid positioning pipe is 0.
7. An underwater cable protection device as claimed in claim 6, wherein the outer end surface of the lead-in mounting portion is a lead-in surface, and the lead-in surface is a circular arc surface or an inclined surface.
8. An underwater cable protection device as claimed in claim 6, wherein a position-limiting mechanism is provided between the rigid positioning buckle and the mounting groove for stably mounting the rigid positioning buckle in the mounting groove.
9. An underwater cable protection device as claimed in claim 8, wherein the limiting mechanism includes a positioning plate disposed on the rigid positioning buckle and engaged with the mounting groove, and a limiting plate embedded in the mounting groove and covering the mounting groove, the positioning plate is vertically disposed on the inner end surface of the rigid positioning buckle, the length of the positioning plate is greater than that of the rigid positioning buckle, the positioning plate is disposed between the limiting plate and the mounting groove, the limiting plate is provided with a through hole for the rigid positioning buckle to extend out, the rigid positioning buckle can protrude outwards or recess inwards in the through hole, and the elastic supporting member is disposed between the positioning plate and the mounting groove.
10. A submarine cable protection device according to claim 1, wherein the lower end of said flexible bend-preventing tube is connected to a bend limiter for installation of a submarine cable therethrough.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911108494.4A CN110829338A (en) | 2019-11-13 | 2019-11-13 | Underwater cable protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911108494.4A CN110829338A (en) | 2019-11-13 | 2019-11-13 | Underwater cable protection device |
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| Publication Number | Publication Date |
|---|---|
| CN110829338A true CN110829338A (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911108494.4A Pending CN110829338A (en) | 2019-11-13 | 2019-11-13 | Underwater cable protection device |
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| CN (1) | CN110829338A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114649788A (en) * | 2022-02-28 | 2022-06-21 | 浙江大学华南工业技术研究院 | Novel anti-drop submarine cable protection implementation method |
-
2019
- 2019-11-13 CN CN201911108494.4A patent/CN110829338A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114649788A (en) * | 2022-02-28 | 2022-06-21 | 浙江大学华南工业技术研究院 | Novel anti-drop submarine cable protection implementation method |
| CN114649788B (en) * | 2022-02-28 | 2024-04-12 | 浙江大学华南工业技术研究院 | Anti-drop submarine cable protection implementation method |
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