阅读说明：本技术 一种海缆以及监测线缆并行的弯曲限制方法及弯曲限制器 (Submarine cable, bending limiting method for monitoring cable parallelism and bending limiter ) 是由 黄雪峰 于 2021-09-07 设计创作，主要内容包括：本发明涉及电缆连接器技术领域,公开了一种海缆以及监测线缆并行的弯曲限制方法及弯曲限制器,海缆以及监测线缆并行的弯曲限制器包括圆筒形结构的限制器主体,限制器主体包括第一段筒体、第二段筒体和第三段筒体,第一段筒体的外径小于第三段筒体的直径,第三段筒体内部设有与第一段筒体匹配的接口腔,接口腔后端连通与第二段筒体匹配的后端腔,后端腔延伸到限制器主体的后端构成开口；第一段筒体、第二段筒体以及接口腔前侧的第三段筒体的中心设有相互连通的海缆通道；本发明的弯曲限制器设置旋转限制器,能够限制相邻的限制器主体之间的旋转位移,避免切断监测线缆,同时又保留了一部分旋转的空间,便于海缆释放扭转应力。(The invention relates to the technical field of cable connectors and discloses a submarine cable, a bending limiting method for monitoring the parallelism of the submarine cable and a cable, and a bending limiter, wherein the bending limiter for monitoring the parallelism of the submarine cable and the cable comprises a limiter main body with a cylindrical structure, the limiter main body comprises a first section of cylinder, a second section of cylinder and a third section of cylinder, the outer diameter of the first section of cylinder is smaller than the diameter of the third section of cylinder, an interface cavity matched with the first section of cylinder is arranged in the third section of cylinder, the rear end of the interface cavity is communicated with a rear end cavity matched with the second section of cylinder, and the rear end cavity extends to the rear end of the limiter main body to form an opening; the centers of the first section of cylinder body, the second section of cylinder body and the third section of cylinder body at the front side of the joint cavity are provided with submarine cable channels which are communicated with each other; the bending limiter is provided with the rotation limiter, so that the rotation displacement between adjacent limiter bodies can be limited, the monitoring cable is prevented from being cut off, a part of rotating space is reserved, and the submarine cable can release torsional stress conveniently.)

1. The bending limiter for the parallel submarine cable and the parallel monitoring cable is characterized by comprising a limiter main body (100) with a cylindrical structure, wherein the limiter main body (100) comprises a first section of cylinder body (101), a second section of cylinder body (102) and a third section of cylinder body (103), the outer diameter of the first section of cylinder body (101) is smaller than that of the third section of cylinder body (103), an interface cavity (104) matched with the first section of cylinder body (101) is arranged inside the third section of cylinder body (103), the rear end of the interface cavity (104) is communicated with a rear end cavity (105) matched with the second section of cylinder body (102), the rear end cavity (105) extends to the rear end of the limiter main body (100) to form an opening, the inner diameter of the rear end cavity (105) is smaller than that of the interface cavity (104), and the outer diameter of the second section of cylinder body (102) is smaller than that of the first section of cylinder body (101);

the centers of the first section of cylinder body (101), the second section of cylinder body (102) and the third section of cylinder body (103) at the front side of the joint cavity (104) are provided with a submarine cable channel (106) which is communicated with each other, and the rear end of the submarine cable channel (106) is communicated with the joint cavity (104) of the third section of cylinder body (103);

the inner walls of the first section of cylinder body (101), the second section of cylinder body (102) and the third section of cylinder body (103) at the front side of the interface cavity (104) are provided with monitoring cable channels (107) which are communicated with each other, and the rear ends of the monitoring cable channels (107) are communicated with the interface cavity (104) of the third section of cylinder body (103);

the front end of the junction cavity (104) is provided with a rotation limiter (108) for limiting the relative rotation displacement of two limiter bodies (100) which are connected with each other, the rotation limiter (108) comprises a fixed ring (109) fixedly connected with the third section of the cylinder body (103) and a movable ring (110) rotatably connected with the third section of the cylinder body (103), a gap is formed between the fixed ring (109) and the movable ring (110), a plurality of sliding plates (111) are arranged in the gap between the fixed ring (109) and the movable ring (110), the sliding plates (111) are uniformly distributed in an annular array, a limiting ring (112) fixedly connected with the fixed ring (109) is arranged on the outer side of the sliding plates (111), and the inner wall of the submarine cable channel (106) extends to the inner sides of the sliding plates (111) to form a convex opening (113); one side of the sliding plate (111) far away from the center of the fixing ring (109) is provided with an outer limiting tooth (114), one side close to the center of the fixing ring (109) is provided with an inner limiting tooth (115), the inner edge of the limiting ring (112) is provided with an outer tooth socket matched with the outer limiting tooth (114), and the outer edge of the convex opening (113) is provided with an inner tooth socket matched with the inner limiting tooth (115);

a hollow sliding pin (116) is arranged on the sliding plate (111), the monitoring cable extends to the junction cavity (104) from the center of the sliding pin (116), a sliding block is arranged in front of the sliding plate (111), a second slide way (118) matched with the sliding block is arranged on the fixed ring (109), first sliding grooves (117) matched with the sliding pin (116) in a sliding mode are formed in the fixed ring (109) and the movable ring (110), and the first sliding grooves (117) penetrate through the fixed ring (109) and the movable ring (110);

the rotation of the movable ring (110) can drive the sliding plate (111) to move along the second slide way (118) through the sliding pin (116), and the sliding pin (116) moves along the first sliding groove (117) in the process that the sliding plate (111) moves inside and outside along the second slide way (118);

the sliding plate (111) moves outwards to enable the outer limit teeth (114) to be embedded into the outer tooth grooves, and the rotation of the sliding plate (111) and the movable ring (110) is limited;

the sliding plate (111) moves inwards to enable the inner limiting teeth (115) to be embedded into the inner tooth grooves, and rotation of the sliding plate (111) and the movable ring (110) is limited.

2. A sea cable and cable parallelism bend limiter according to claim 1, characterized in that the first barrel (101) of the limiter body (100) fits into the interface chamber (104) of another limiter body (100) and the second barrel (102) of one limiter body (100) fits into the rear end chamber (105) of another limiter body (100).

3. A submarine cable and monitor cable parallelism bend limiter according to claim 1, wherein the interface cavity (104) has an inner diameter greater than the outer diameter of the first section of barrel (101).

4. A submarine cable and monitor cable parallel bending limiter according to claim 1, wherein the length of said interface cavity (104) in the direction of the limiter body (100) axis is greater than the length of the first section of barrel (101) in the direction of the limiter body (100) axis.

5. A bend limiter according to claim 1 wherein the end cavity (105) is generally frusto-conical, with an inner diameter that increases from front to back.

6. A bend limiter for sea cables and monitoring cable parallelism as claimed in claim 1, wherein the second barrel section (102) is of constant diameter construction.

7. A submarine cable and monitor cable parallel bend limiter according to claim 1, wherein the monitor cable channel (107) has a tapered flared section at the end near the junction box (104).

8. The bending limiter for the submarine cable and the monitoring cable in parallel according to claim 1, wherein a circle of friction ring (119) is arranged on the inner wall of the junction cavity (104), the friction ring (119) is connected with the movable ring (110), and when the two limiter bodies (100) are connected, the first section of the cylinder (101) of one limiter body (100) is in contact with the friction ring (119) in the junction cavity (104) of the other limiter body (100), so that the friction ring (119) can be driven by the first section of the cylinder (101) to rotate.

9. A bend limiter according to claim 8 wherein the friction ring (119) and the first barrel (101) are provided with corresponding grooves along the axial direction of the limiter body (100).

10. A bend limiting method of a submarine cable and a bend limiter monitoring cable parallelism according to claim 1, comprising the steps of:

s1, sleeving a limiter main body (100) on the submarine cable and passing the monitoring cable through the monitoring cable channel (107) and the sliding pin (116);

s2, the monitoring cable is led through the monitoring cable channel (107) and the sliding pin (116) of the next limiter main body (100), then the limiter main body (100) is sleeved on the submarine cable, and the first section of the cylinder (101) of the limiter main body (100) is embedded into the interface cavity (104) of the previous limiter main body (100);

s3, repeating the step S2 until all the restrainer bodies (100) are connected to the submarine cable.

Technical Field

The present invention relates to the field of cable connectors, and more particularly, to a submarine cable and a bend limiter for monitoring cable parallelism.

Background

Protection of flexible hoses such as submarine cables employs submarine cable bend limiters. In the submarine cable laying construction process, different types of monitoring methods such as personnel supervision or equipment detection need to be adopted, monitoring of the submarine cable state and the sea area dynamic state by using monitors such as sensors is a common monitoring means, the monitors cannot be connected in a submarine cable breaking mode, and a channel through which a monitoring cable passes needs to be reserved by a bending limiter.

Disclosure of Invention

The invention provides a submarine cable and a bending limiter for monitoring cable parallelism, which solve the technical problem of cable routing monitoring in the related technology.

According to one aspect of the invention, a bending limiter for a submarine cable and monitoring cable parallelism comprises a limiter main body with a cylindrical structure, wherein the limiter main body comprises a first section of cylinder, a second section of cylinder and a third section of cylinder, the outer diameter of the first section of cylinder is smaller than that of the third section of cylinder, an interface cavity matched with the first section of cylinder is arranged inside the third section of cylinder, the rear end of the interface cavity is communicated with a rear end cavity matched with the second section of cylinder, the rear end cavity extends to the rear end of the limiter main body to form an opening, the inner diameter of the rear end cavity is smaller than that of the interface cavity, and the outer diameter of the second section of cylinder is smaller than that of the first section of cylinder;

the centers of the first section of cylinder, the second section of cylinder and the third section of cylinder at the front side of the interface cavity are provided with mutually communicated submarine cable channels, and the rear ends of the submarine cable channels are communicated with the interface cavity of the third section of cylinder;

the inner walls of the first section of cylinder body, the second section of cylinder body and the third section of cylinder body on the front side of the interface cavity are provided with monitoring cable channels which are mutually communicated, and the rear ends of the monitoring cable channels are communicated with the interface cavity of the third section of cylinder body;

the front end of the interface cavity is provided with a rotation limiter used for limiting the relative rotation displacement of two limiter bodies which are connected with each other, the rotation limiter comprises a fixed ring fixedly connected with the third section of cylinder body and a movable ring rotatably connected with the third section of cylinder body, a gap is arranged between the fixed ring and the movable ring, a plurality of sliding plates are arranged in the gap between the fixed ring and the movable ring, the sliding plates are uniformly distributed in an annular array, the outer sides of the sliding plates are provided with a limiting ring fixedly connected with the fixed ring, and the inner wall of the submarine cable channel extends to the inner sides of the sliding plates to form a convex opening; one side of the sliding plate, which is far away from the center of the fixed ring, is provided with an outer limiting tooth, one side of the sliding plate, which is close to the center of the fixed ring, is provided with an inner limiting tooth, the inner edge of the limiting ring is provided with an outer tooth socket matched with the outer limiting tooth, and the outer edge of the convex opening is provided with an inner tooth socket matched with the inner limiting tooth;

the monitoring cable extends to the junction cavity from the center of the sliding pin, a sliding block is arranged in front of the sliding plate, a second slide way matched with the sliding block is arranged on the fixed ring, first sliding grooves in sliding fit with the sliding pin are arranged on the fixed ring and the movable ring, and the first sliding grooves penetrate through the fixed ring and the movable ring;

the rotation of the movable ring can drive the sliding plate to move along the second slide way through the sliding pin, and the sliding pin moves along the first slide way in the process of moving inside and outside along the second slide way;

the sliding plate moves outwards to enable the outer limiting teeth to be embedded into the outer tooth grooves, so that the sliding plate and the movable ring are limited to rotate;

the sliding plate moves inwards to enable the inner limiting teeth to be embedded into the inner tooth grooves, and rotation of the sliding plate and the movable ring is limited.

Further, the first section of the barrel of the limiter body is matched with the interface cavity of the other limiter body, and the second section of the barrel of one limiter body is matched with the rear end cavity of the other limiter body.

Further, the inner diameter of the interface cavity is larger than the outer diameter of the first section of the cylinder body.

Further, the length of the interface cavity along the axial direction of the limiter main body is larger than that of the first section of cylinder body along the axial direction of the limiter main body.

Furthermore, the whole end cavity is in a circular truncated cone shape, and the inner diameter of the end cavity is sequentially increased from front to back.

Further, the second section of cylinder is of an equal-diameter structure.

Further, one end of the monitoring cable channel close to the access cavity is provided with a conical flaring section.

Furthermore, a circle of friction ring is arranged on the inner wall of the joint cavity and connected with the movable ring, and when the two limiter bodies are connected, the first section of barrel body of one limiter body is in contact with the friction ring in the joint cavity of the other limiter body, so that the first section of barrel body can drive the friction ring to rotate.

Furthermore, the friction ring and the first section of barrel are provided with corresponding strip-shaped grooves arranged along the axial direction of the limiter main body.

According to one aspect of the present invention, there is provided a submarine cable and a method of monitoring cable parallelism for bend limiting, comprising the steps of:

s1, sleeving a limiter main body on the submarine cable, and enabling the monitoring cable to pass through the monitoring cable channel and the sliding pin;

s2, the monitoring cable passes through the monitoring cable channel and the sliding pin of the next limiter main body, then the limiter main body is sleeved on the submarine cable, and the first section of the cylinder body of the limiter main body is embedded into the interface cavity of the previous limiter main body;

s3, the step S2 is repeatedly performed until all the limiter bodies are connected to the submarine cable.

The invention has the beneficial effects that:

the bending limiter of the invention reserves a monitoring cable channel, which is convenient for monitoring the distribution of cables;

the bending limiter is provided with the rotation limiter, so that the rotation displacement between adjacent limiter bodies can be limited, the monitoring cable is prevented from being cut off, a part of rotating space is reserved, and the submarine cable can release torsional stress conveniently.

Drawings

FIG. 1 is a schematic diagram of the connection of two sea cables and a bend limiter monitoring the cable parallelism according to an embodiment of the invention;

FIG. 2 is a cross-sectional view of a submarine cable and a bend limiter monitoring cable parallelism according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a rotation limiter according to an embodiment of the present invention;

FIG. 4 is a schematic view of the rotation limiter of the embodiment of the present invention with the movable ring and the two sliding plates removed;

FIG. 5 is a schematic view showing the sliding plate of the rotation limiter according to the embodiment of the present invention moving inward so that the inner stopper teeth are fitted into the inner teeth grooves;

fig. 6 is a schematic combination diagram of a cylindrical body and a helical body according to an embodiment of the present invention.

In the figure: a limiter main body 100; a first section of barrel 101; a second-stage barrel 102; a third section of barrel 103; an access cavity 104; a back end cavity 105; a sea cable channel 106; monitoring the cable channel 107; a rotation limiter 108; a fixing ring 109; a movable ring 110; a slide plate 111; a stop collar 112; a boss 113; outer limit teeth 114; inner limit teeth 115; a slide pin 116; a first chute 117; a second slide 118; a friction ring 119.

Detailed Description

The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thereby implement the subject matter described herein, and are not intended to limit the scope, applicability, or examples set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

In the present embodiment, a parallel bending limiter for submarine cables and monitoring cables is provided, which is shown in fig. 1 as a connection diagram of two parallel bending limiters for submarine cables and monitoring cables, as shown in fig. 2 to 5, the bending limiter for the parallel submarine cable and the monitoring cable comprises a limiter main body 100 with a cylindrical structure, wherein the limiter main body 100 comprises a first section of cylinder 101, a second section of cylinder 102 and a third section of cylinder 103, the outer diameter of the first section of cylinder 101 is smaller than that of the third section of cylinder 103, an interface cavity 104 matched with the first section of cylinder 101 is arranged inside the third section of cylinder 103, the rear end of the interface cavity 104 is communicated with a rear end cavity 105 matched with the second section of cylinder 102, the rear end cavity 105 extends to the rear end of the limiter main body 100 to form an opening, the inner diameter of the rear end cavity 105 is smaller than that of the interface cavity 104, and the outer diameter of the second section of cylinder 102 is smaller than that of the first section of cylinder 101;

the first barrel 101 of one restrictor body 100 mates with the interface cavity 104 of another restrictor body 100, and the second barrel 102 of one restrictor body 100 mates with the rear cavity 105 of another restrictor body 100; in order to enable the axes of the two limiter main bodies 100 to move within a certain included angle range, the inner diameter of the interface cavity 104 is larger than the outer diameter of the first section of cylinder body 101, the length of the interface cavity 104 along the axis direction of the limiter main body 100 is larger than the length of the first section of cylinder body 101 along the axis direction of the limiter main body 100, the rear end cavity 105 is integrally in a circular truncated cone shape, the inner diameter of the rear end cavity increases from front to back in sequence, the second section of cylinder body 102 is in an equal-diameter structure, the first section of cylinder body 101 is matched with the interface cavity 104, and the second section of cylinder body 102 is matched with the rear end cavity 105 to enable the axes of the two limiter main bodies 100 which are connected with each other to move within a certain included angle range.

The centers of the first section of cylinder body 101, the second section of cylinder body 102 and the third section of cylinder body 103 at the front side of the interface cavity 104 are provided with a submarine cable channel 106 which is communicated with each other, and the rear end of the submarine cable channel 106 is communicated with the interface cavity 104 of the third section of cylinder body 103;

the inner walls of the first section of cylinder body 101, the second section of cylinder body 102 and the third section of cylinder body 103 at the front side of the interface cavity 104 are provided with monitoring cable channels 107 which are communicated with each other, and the rear ends of the monitoring cable channels 107 are communicated with the interface cavity 104 of the third section of cylinder body 103;

the front end of the interface cavity 104 is provided with a rotation limiter 108 for limiting the relative rotational displacement of two limiter bodies 100 connected with each other, the rotation limiter 108 comprises a fixed ring 109 fixedly connected with the third-stage cylinder 103 and a movable ring 110 rotatably connected with the third-stage cylinder 103, a gap is arranged between the fixed ring 109 and the movable ring 110, a plurality of sliding plates 111 are arranged in the gap between the fixed ring 109 and the movable ring 110, the sliding plates 111 are uniformly distributed in an annular array, a limiting ring 112 fixedly connected with the fixed ring 109 is arranged on the outer sides of the sliding plates 111, and the inner wall of the submarine cable channel 106 extends to the inner sides of the sliding plates 111 to form a convex opening 113; one side of the sliding plate 111, which is far away from the center of the fixing ring 109, is provided with an outer limiting tooth 114, one side of the sliding plate, which is close to the center of the fixing ring 109, is provided with an inner limiting tooth 115, the inner edge of the limiting ring 112 is provided with an outer tooth socket matched with the outer limiting tooth 114, and the outer edge of the convex opening 113 is provided with an inner tooth socket matched with the inner limiting tooth 115;

a hollow sliding pin 116 is arranged on the sliding plate 111, the monitoring cable extends to the interface cavity 104 from the center of the sliding pin 116, a sliding block is arranged in front of the sliding plate 111, a second slide way 118 matched with the sliding block is arranged on the fixed ring 109, a first sliding groove 117 matched with the sliding pin 116 in a sliding mode is arranged on each of the fixed ring 109 and the movable ring 110, and the first sliding groove 117 penetrates through the fixed ring 109 and the movable ring 110;

the rotation of the movable ring 110 can drive the sliding plate 111 to move along the second slideway 118 through the sliding pin 116, and the sliding pin 116 moves along the first chute 117 in the process that the sliding plate 111 moves in and out along the second slideway 118;

the sliding plate 111 moves outwards to enable the outer limit teeth 114 to be embedded into the outer tooth grooves, so that the sliding plate 111 and the movable ring 110 are limited to rotate;

the inward movement of the sliding plate 111 causes the inner stopper teeth 115 to be fitted into the inner teeth grooves, thereby restricting the rotation of the sliding plate 111 and the movable ring 110.

The inner wall of the interface cavity 104 is provided with a circle of friction ring 119, the friction ring 119 is connected with the movable ring 110, when the two limiter bodies 100 are connected, the first section cylinder 101 of one limiter body 100 is contacted with the friction ring 119 in the interface cavity 104 of the other limiter body 100, so that the first section cylinder 101 can drive the friction ring 119 to rotate.

In the above embodiment of the present invention, when the outer limit teeth 114 are not inserted into the outer spline and the inner limit teeth 115 are not inserted into the inner spline, there is a space for relative rotational displacement at a certain angle between the two limiter bodies 100, in this way, the submarine cable can release the torsional stress through the space for rotational displacement reserved between the limiter bodies 100, and the sheath expansion and insulation damage of the submarine cable caused by the torsional stress are prevented.

In one embodiment of the present invention, the end of the monitor cable channel 107 near the interface chamber 104 is provided with a tapered flared section. The flared section can prevent the two limiter bodies 100 from shearing in front of the fixing ring 109 when they rotate relative to each other (there is a certain rotation space when the outer limit tooth 114 is not inserted into the outer spline and the inner limit tooth 115 is not inserted into the inner spline), thereby protecting the monitoring cable.

In one embodiment of the present invention, the friction ring 119 and the first cylinder 101 are provided with corresponding strip-shaped grooves along the axial direction of the limiter body 100. The meshing effect of the strip-shaped groove of the friction ring 119 and the strip-shaped groove of the first section of cylinder 101 enables the first section of cylinder 101 to drive the friction ring 119 to rotate.

In one embodiment of the invention, the notches of the inner gullets are obtuse angles and the notches of the outer gullets are obtuse angles.

In one embodiment of the invention, the restrictor body 100 is cut in two along its axis to facilitate assembly.

As shown in fig. 6, based on the above bending limiter for submarine cable and monitoring cable parallelism, the present invention provides a submarine cable and a bending limiting method for monitoring cable parallelism, comprising the following steps:

s1, putting a limiter body 100 on the submarine cable and passing the monitoring cable through the monitoring cable channel 107 and the sliding pin 116;

s2, passing the monitoring cable through the monitoring cable channel 107 and the sliding pin 116 of the next limiter body 100, then sleeving the limiter body 100 on the submarine cable, and embedding the first section of the barrel 101 of the limiter body 100 into the interface cavity 104 of the previous limiter body 100;

s3, the step S2 is repeatedly executed until all the limiter bodies 100 are connected to the submarine cable.

The embodiments of the present invention have been described with reference to the drawings, but the present invention is not limited to the above-mentioned specific embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention and the protection scope of the claims.