Fixation clamp for armored steel wire of submarine cable, and underwater junction box

Abstract

The present application relates to the technical field of submarine cable maintenance, and provides a fixation clamp for an armored steel wire of a submarine cable, and an underwater junction box. The fixation clamp for an armored steel wire of a submarine cable comprises: a first fixation member, a second fixation member and a first connection member, the first fixation member and the second fixation member being used for clamping an armored steel wire therebetween, and the first connection member being used for fixing the first fixation member and the second fixation member so as to tightly clamp the armored steel wire. By means of the provided first fixation member, second fixation member and first connection member, the fixation clamp for an armored steel wire of a submarine cable can clamp armored steel wires between the first fixation member and the second fixation member, so as to ensure that the tensile performance of the armored steel wires is not affected, thus satisfying the requirements of the armored steel wires for use in underwater operating environments.

Description

Fixing fixture for submarine cable armored steel wire and underwater joint box

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on March 11, 2024, with application number 202420463635.4 and application name “Fixing clamp for submarine cable armored steel wire and underwater joint box”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of submarine cable maintenance, and in particular to a fixing clamp for submarine cable armored steel wires and an underwater joint box. Background Art

[0003] Submarine cable transmission offers the advantages of long-distance, high-capacity, cross-sea power transmission. It is an effective means of providing power to islands and offshore platforms, integrating offshore wind power into the grid, and achieving international grid interconnection. In recent years, the development of my country's integrated energy internet and new power systems has accelerated, and the importance of submarine cable lines has grown. With the increasing number of AC submarine cable projects, the reliability requirements for these lines are becoming increasingly stringent. Therefore, research on AC submarine cable operation, maintenance, and emergency repair technologies is of great significance to my country's power grid development.

[0004] The emergency repair of optoelectronic composite submarine cables mainly relies on hard joints, in which the outer protective layer of the submarine cable is restored by a mechanical shell. The tensile strength of the armored steel wire is an extremely important indicator, which is related to whether the submarine cable can run stably underwater. Based on this, how to ensure that the tensile strength of the armored steel wire is not affected becomes a crucial issue.

[0005] Summary of the Invention

[0006] The present application provides a fixing clamp for the armored steel wire of a submarine cable and an underwater joint box. By arranging a first fixing piece, a second fixing piece and a first connecting piece, the armored steel wire can be clamped between the first fixing piece and the second fixing piece, ensuring that the tensile strength of the armored steel wire is not affected.

[0007] On the one hand, the present application provides a fixing clamp for the armored steel wire of a submarine cable, comprising: a first fixing member, a second fixing member and a first connecting member, wherein the first fixing member and the second fixing member are used to clamp the armored steel wire therebetween, and the first connecting member is used to fix the first fixing member and the second fixing member, thereby clamping the armored steel wire.

[0008] By setting a first fixing piece, a second fixing piece and a first connecting piece, the armored steel wire can be clamped between the first fixing piece and the second fixing piece, ensuring that the tensile strength of the armored steel wire is not affected, thereby meeting the use requirements of the armored steel wire in an underwater working environment.

[0009] In one implementation, the second fixing member is sleeved on the outside of the first fixing member, and the first connecting member is sleeved on the outside of the second fixing member.

[0010] Furthermore, the armored steel wire is located between the circumferential surfaces of the first fixing member and the second fixing member, and the opening of the annular member is connected by bolts to fix the armored steel wire between the first fixing member and the second fixing member.

[0011] In one implementation, the second fixing member is sleeved on the outside of the first fixing member, and the first connecting member is connected to the first fixing member and the second fixing member.

[0012] In this way, the armored steel wire is fixed between the first fixing piece and the second fixing piece.

[0013] In one implementation, the first fixing member and the second fixing member are arranged opposite to each other, and the first connecting member is connected to the first fixing member and the second fixing member.

[0014] In this way, the armored steel wire is fixed between the first fixing piece and the second fixing piece.

[0015] In one implementation, the first fixing member includes a first fixing portion and a second fixing portion, and the second fixing portion is perpendicularly arranged and connected to the first fixing portion; the second fixing member includes a third fixing portion and a fourth fixing portion, and the fourth fixing portion is perpendicularly arranged and connected to the third fixing portion; the third fixing portion is sleeved on the outside of the first fixing portion, the fourth fixing portion is arranged parallel to the second fixing portion, and the first connecting member is connected to the second fixing portion and the fourth fixing portion; the surface of the first fixing portion that is in contact with the armor steel wire is provided with a first inclined surface, and the surface of the third fixing portion that is in contact with the armor steel wire is provided with a second inclined surface, and the slopes of the first inclined surface and the second inclined surface match, so that the armor steel wire is clamped between the first inclined surface and the second inclined surface.

[0016] For the armored steel wire structure in which the armored steel wire is at an angle to the center of the submarine cable, the first fixing part of the fixing clamp is provided with a first inclined surface, and the third fixing part is provided with a second inclined surface. The armored steel wire is located between the first inclined surface and the second inclined surface. The first connecting part is used to connect the second fixing part and the fourth fixing part. When the first connecting part is tightened, the third fixing part can be driven to slide along the first fixing part, thereby enhancing the clamping force of the fixing clamp on the armored steel wire.

[0017] In one implementation, the second fixing portion is provided with a through hole, and the armored steel wire is passed through the through hole.

[0018] After the end of the armored steel wire passes through the through hole, the locking degree of the first connecting piece is adjusted so that the third fixing portion can slide along the first fixing portion to lock the armored steel wire.

[0019] In one implementation, it also includes a second connecting member; the first fixing member includes a first fixing portion and a second fixing portion, and the second fixing portion is perpendicularly arranged and connected to the first fixing portion; the second fixing member includes a third fixing portion and a fourth fixing portion, and the fourth fixing portion is perpendicularly arranged and connected to the third fixing portion; the third fixing portion is sleeved on the outside of the first fixing portion, the fourth fixing portion is arranged parallel to the second fixing portion, and the armored steel wire clamp is arranged between the first fixing portion and the third fixing portion, and between the second fixing portion and the fourth fixing portion; the first connecting member is connected to the second fixing portion and the fourth fixing portion, and the second connecting member is sleeved on the outside of the third fixing portion.

[0020] In this way, the third fixing portion and the first fixing portion are clamped tightly, thereby clamping the armor steel wire located between the first fixing portion and the third fixing portion.

[0021] In one implementation, the first fixing member is a first annular member, the second fixing member is a second annular member, and the first annular member and the second annular member are opposite to each other so as to clamp the armor steel wire therebetween.

[0022] The working pressure is provided by the first connecting member so that the first fixing member and the second fixing member squeeze the armored steel wire to generate friction force, which is used to offset the tension in the submarine cable, thereby achieving the fixation of the submarine cable.

[0023] In one implementation, a third connecting member is further included, the first annular member is provided with an annular boss, the annular boss is opposite to the second annular member, the first connecting member is connected to the annular boss and the second annular member to clamp the armor steel wire between the annular boss and the second annular member; the third connecting member is sleeved on the outside of the first annular member, and the third connecting member is used to fix the armor steel wire that bypasses the annular boss.

[0024] The end of the armor wire extends beyond the annular boss, bypasses the annular boss, and is located outside the first annular member. The first connecting member connects the annular boss and the second annular member to secure the armor wire. The end of the armor wire bypasses the annular boss and is laid outside the first annular member. The third connecting member is sleeved outside the first annular member to secure the end of the armor wire between the third connecting member and the first annular member. This radial clamping enhances the clamping capacity of the armor wire and thereby improves the overall tensile strength.

[0025] On the other hand, the present application also provides an underwater joint box, comprising the fixing clamp for the armored steel wire of the submarine cable as described above.

[0026] Through the above technical solution, the fixing clamp and underwater joint box for the armored steel wire of the submarine cable provided in this application can clamp the armored steel wire between the first fixing member and the second fixing member by setting a first fixing member, a second fixing member and a first connecting member, thereby ensuring that the tensile strength of the armored steel wire is not affected, thereby meeting the use requirements of the armored steel wire in an underwater working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] FIG1 is a schematic diagram of the structure of a fixing fixture for the armored steel wire of a submarine cable provided in the present application;

[0029] FIG2 is a second structural schematic diagram of the fixing fixture for the armored steel wire of the submarine cable provided by the present application;

[0030] FIG3 is a third structural schematic diagram of the fixing fixture for the armored steel wire of the submarine cable provided in the present application.

[0031] Reference numerals:

[0032] 1: first fixing member; 2: second fixing member; 3: first connecting member; 4: third connecting member;

[0033] 11: first fixing portion; 12: second fixing portion; 13: annular boss; 21: third fixing portion; 22: fourth fixing portion;

[0034] 100: armored steel wire; 111: first inclined surface; 121: through hole; 211: second inclined surface. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0036] The features of the terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0037] The fixing fixture for the armored steel wire of the submarine cable and the underwater joint box of the present application are described below with reference to FIG. 1 to FIG. 3 .

[0038] As shown in Figures 1 and 2, in an embodiment of the present application, a fixing fixture for the armored steel wire of a submarine cable includes: a first fixing member 1, a second fixing member 2 and a first connecting member 3. The first fixing member 1 and the second fixing member 2 are used to clamp the armored steel wire 100 therebetween, and the first connecting member 3 is used to fix the first fixing member 1 and the second fixing member 2, thereby clamping the armored steel wire 100.

[0039] Specifically, in order to ensure that the maximum tension that the underwater joint box can withstand can meet the requirements of the actual underwater working environment, a firm and reliable fixing clamp is required to fix the armored steel wire 100 to meet the tensile strength requirements of the underwater joint box. In the embodiment of the present application, the first fixing member 1 and the second fixing member 2 are both annular members, and the first fixing member 1 and the second fixing member 2 can have various forms, such as: the second fixing member 2 can be sleeved on the outside of the first fixing member 1, and the armored steel wire 100 is fixed between the first fixing member 1 and the second fixing member 2 by using two circumferential surfaces; optionally, the first fixing member 1 and the second fixing member 2 can also be arranged relative to each other, and the armored steel wire 100 is fixed between the two by using their end faces.

[0040] Furthermore, in this embodiment, the first connecting member 3 may be a bolt, so that the clamping force of the armored steel wire 100 can be adjusted by adjusting the tightening degree of the bolt to ensure that the tensile strength of the armored steel wire 100 is not affected.

[0041] It should be noted that the fixing fixture provided in the embodiment of the present application is used to fix most of the armored steel wires in the armor layer of the submarine cable.

[0042] The fixing clamp for the armored steel wire of the submarine cable provided in the embodiment of the present application can clamp the armored steel wire between the first fixing member and the second fixing member by setting a first fixing member, a second fixing member and a first connecting member, thereby ensuring that the tensile strength of the armored steel wire is not affected, thereby meeting the use requirements of the armored steel wire in an underwater working environment.

[0043] Furthermore, the embodiments of the present application provide a variety of fixing fixtures for the armored steel wire 100 to meet the needs of different forms of armored steel wire structures.

[0044] Optionally, in one embodiment of the present application, the second fixing member 2 is sleeved on the outside of the first fixing member 1, the armored steel wire 100 is located between the circumferential surfaces of the first fixing member 1 and the second fixing member 2, and the first connecting member 3 includes a ring-shaped member with an opening and a bolt. The ring-shaped member is sleeved on the outside of the second fixing member 2, and the opening of the ring-shaped member is connected by bolts to fix the armored steel wire 100 between the first fixing member 1 and the second fixing member 2.

[0045] Optionally, in the second embodiment of the present application, the second fixing member 2 is sleeved on the outside of the first fixing member 1, and the first connecting member 3 passes through the first fixing member 1 and the second fixing member 2 to fix the armored steel wire 100 between the first fixing member 1 and the second fixing member 2.

[0046] Specifically, as shown in Figure 1, in this embodiment, the first fixing member 1 includes a first fixing portion 11 and a second fixing portion 12, the second fixing portion 12 being perpendicularly arranged and connected to the first fixing portion 11. The second fixing member 2 includes a third fixing portion 21 and a fourth fixing portion 22, the fourth fixing portion 22 being perpendicularly arranged and connected to the third fixing portion 21. The third fixing portion 21 is sleeved on the outside of the first fixing portion 11, the fourth fixing portion 22 is arranged parallel to the second fixing portion 12, and the first connecting member 3 is connected to the second fixing portion 12 and the fourth fixing portion 22. The surface of the first fixing portion 11 that contacts the armored steel wire 100 is provided with a first inclined surface 111, and the surface of the third fixing portion 21 that contacts the armored steel wire 100 is provided with a second inclined surface 211. The slopes of the first inclined surface 111 and the second inclined surface 211 match, so that the armored steel wire 100 is clamped between the first inclined surface 111 and the second inclined surface 211.

[0047] Specifically, for the armored steel wire structure in which the armored steel wire 100 is at an angle to the center of the submarine cable, the first fixing portion 11 of the fixing clamp is provided with a first inclined surface 111, and the third fixing portion 21 is provided with a second inclined surface 211. The armored steel wire 100 is located between the first inclined surface 111 and the second inclined surface 211. The first connecting member 3 is used to connect the second fixing portion 12 and the fourth fixing portion 22. When the first connecting member 3 is tightened, the third fixing portion 21 can be driven to slide along the first fixing portion 11, thereby enhancing the clamping force of the fixing clamp on the armored steel wire 100.

[0048] Furthermore, in this embodiment, the first connecting member 3 provides working pressure, so that the first fixing portion 11 and the third fixing portion 21 squeeze the armored steel wire 100, thereby generating friction, and the friction is used to offset the tension in the submarine cable, thereby achieving the fixation of the submarine cable.

[0049] Furthermore, in this embodiment, the second fixing portion 12 is provided with a through hole 121. After the end of the armored steel wire 100 passes through the through hole 121, the locking degree of the first connecting member 3 is adjusted so that the third fixing portion 21 can slide along the first fixing portion 11 to lock the armored steel wire 100.

[0050] Optionally, in another embodiment of the present application, the first fixing member 1 still includes a first fixing portion 11 and a second fixing portion 12 that are vertically arranged and connected, and the second fixing member 2 also includes a third fixing portion 21 and a fourth fixing portion 22 that are vertically arranged and connected, but the first fixing portion 11 and the third fixing portion 21 are not provided with an inclined surface. The armored steel wire 100 is located between the first fixing portion 11 and the third fixing portion 21, and the end of the armored steel wire 100 is located between the second fixing portion 12 and the fourth fixing portion 22. The first connecting member 3 is used to connect the second fixing portion 12 and the fourth fixing portion 22 to clamp the end of the armored steel wire 100. The second connecting member is sleeved on the outside of the third fixing portion 21 to clamp the third fixing portion 21 and the first fixing portion 11 tightly, thereby clamping the armored steel wire 100 located between the first fixing portion 11 and the third fixing portion 21 tightly.

[0051] As shown in Figure 2, optionally, in another embodiment of the present application, the first fixing member 1 and the second fixing member 2 are arranged opposite to each other, the armor steel wire 100 is located between the first fixing member 1 and the second fixing member 2, and the first connecting member 3 passes through the first fixing member 1 and the second fixing member 2 to fix the armor steel wire 100 between the first fixing member 1 and the second fixing member 2.

[0052] Specifically, for the armor layer structure in which the armor wire 100 is parallel to the center of the submarine cable, the first fixing member 1 is a first annular member, the second fixing member 2 is a second annular member, and the first annular member and the second annular member are opposite to each other to clamp the armor wire 100 therebetween.

[0053] In this embodiment, the end of the armored steel wire 100 is located between the first fixing member 1 and the second fixing member 2 , and the first connecting member 3 is used to connect the first fixing member 1 and the second fixing member 2 to clamp the armored steel wire 100 tightly.

[0054] Specifically, the first connecting member 3 provides working pressure, causing the first fixing member 1 and the second fixing member 2 to squeeze the armored steel wire 100, generating friction, which is used to offset the tension in the submarine cable, thereby achieving fixation of the submarine cable.

[0055] Furthermore, as shown in FIG3 , in the above embodiment, the fixing fixture further includes a third connecting member 4 . The first annular member is provided with an annular boss 13 , which is opposite the second annular member. The first connecting member 3 is connected to the annular boss 13 and the second annular member to sandwich the armor wire 100 between the annular boss 13 and the second annular member. The third connecting member 4 is sleeved on the outside of the first annular member and is used to secure the armor wire 100 after it passes around the annular boss 13 .

[0056] Specifically, in this embodiment, the end of the armor wire 100 extends beyond the annular boss 13, bypasses the annular boss 13, and is located outside the first annular member. The first connecting member 3 connects the annular boss 13 and the second annular member to secure the armor wire 100. After bypassing the annular boss 13, the end of the armor wire 100 is laid outside the first annular member. The third connecting member 4 is sleeved on the outside of the first annular member to secure the end of the armor wire 100 between the third connecting member 4 and the first annular member. This radial clamping enhances the clamping capacity of the armor wire 100, thereby improving the overall tensile strength.

[0057] Furthermore, in the above embodiment, connecting pieces may be provided in the axial and radial directions to further improve the clamping capacity of the fixing fixture.

[0058] The fixing clamp for the armored steel wire of the submarine cable provided in the embodiment of the present application develops different forms of fixing clamps, and different armor fixing forms can be selected according to the performance, material and shape of the armored steel wire itself, thereby meeting the working requirements of the underwater junction box, broadening the technical scope of the submarine cable armored steel wire recovery technology, and selecting suitable fixing clamps for different voltage levels and corresponding submarine cable armor structures, thereby forming a standardized structural form and installation and construction process, which is convenient for on-site connection at sea and long-distance laying.

[0059] An embodiment of the present application further provides an underwater joint box, comprising a fixing clamp for the armored steel wire of a submarine cable.

[0060] Specifically, the fixing fixture of the submarine cable armored steel wire includes: a first fixing member 1, a second fixing member 2 and a first connecting member 3. The first fixing member 1 and the second fixing member 2 are used to clamp the armored steel wire 100 therebetween, and the first connecting member 3 is used to fix the first fixing member 1 and the second fixing member 2, thereby clamping the armored steel wire 100.

[0061] In order to ensure that the maximum tension that the underwater joint box can withstand can meet the requirements of the actual underwater working environment, a firm and reliable fixing clamp is required to fix the armored steel wire 100 to meet the tensile strength requirements of the underwater joint box. In the embodiment of the present application, the first fixing member 1 and the second fixing member 2 are both annular members, and the first fixing member 1 and the second fixing member 2 can have various forms, such as: the second fixing member 2 can be sleeved on the outside of the first fixing member 1, and the armored steel wire 100 is fixed between the first fixing member 1 and the second fixing member 2 by using two circumferential surfaces; optionally, the first fixing member 1 and the second fixing member 2 can also be arranged relative to each other, and the armored steel wire 100 is fixed between the two by using their end faces.

[0062] Furthermore, in this embodiment, the first connecting member 3 may be a bolt, so that the clamping force of the armored steel wire 100 can be adjusted by adjusting the tightening degree of the bolt to ensure that the tensile strength of the armored steel wire 100 is not affected.

[0063] It should be noted that the fixing fixture provided in the embodiment of the present application is used to fix most of the armored steel wires in the armor layer of the submarine cable.

[0064] The underwater junction box provided in the embodiment of the present application ensures that the tensile strength of the armored steel wire is not affected by providing a fixing clamp for the armored steel wire of the submarine cable, thereby meeting the use requirements of the armored steel wire in an underwater working environment.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A fixing fixture for submarine cable armored steel wire, characterized in that: include: A first fixing member, a second fixing member and a first connecting member, wherein the first fixing member and the second fixing member are used to clamp the armor steel wire therebetween, and the first connecting member is used to fix the first fixing member and the second fixing member, thereby clamping the armor steel wire.

2. The fixing fixture for submarine cable armored steel wire according to claim 1, characterized in that: The second fixing member is sleeved on the outside of the first fixing member, and the first connecting member is sleeved on the outside of the second fixing member.

3. The fixing fixture for submarine cable armored steel wire according to claim 1, characterized in that: The second fixing member is sleeved on the outside of the first fixing member, and the first connecting member is connected to the first fixing member and the second fixing member.

4. The fixing fixture for submarine cable armored steel wire according to claim 1, characterized in that: The first fixing member is arranged opposite to the second fixing member, and the first connecting member is connected to the first fixing member and the second fixing member.

5. The fixing fixture for submarine cable armored steel wire according to claim 3, characterized in that: The first fixing member includes a first fixing portion and a second fixing portion, wherein the second fixing portion is vertically arranged and connected to the first fixing portion; The second fixing member includes a third fixing portion and a fourth fixing portion, wherein the fourth fixing portion is perpendicularly arranged and connected to the third fixing portion; The third fixing portion is sleeved on the outside of the first fixing portion, the fourth fixing portion is arranged parallel to the second fixing portion, and the first connecting member is connected to the second fixing portion and the fourth fixing portion; The surface of the first fixing portion in contact with the armor steel wire is provided with a first inclined surface, and the surface of the third fixing portion in contact with the armor steel wire is provided with a second inclined surface. The slopes of the first inclined surface and the second inclined surface match, so that the armor steel wire is clamped between the first inclined surface and the second inclined surface.

6. The fixing fixture for submarine cable armored steel wire according to claim 5, characterized in that: The second fixing portion is provided with a through hole, and the armored steel wire is passed through the through hole.

7. The fixing fixture for submarine cable armored steel wire according to claim 3, characterized in that: Also comprising a second connecting member; The first fixing member includes a first fixing portion and a second fixing portion, wherein the second fixing portion is vertically arranged and connected to the first fixing portion; The second fixing member includes a third fixing portion and a fourth fixing portion, wherein the fourth fixing portion is perpendicularly arranged and connected to the third fixing portion; The third fixing portion is sleeved on the outside of the first fixing portion, the fourth fixing portion is arranged parallel to the second fixing portion, and the armor wire clamp is arranged between the first fixing portion and the third fixing portion, and between the second fixing portion and the fourth fixing portion; The first connecting member is connected to the second fixing portion and the fourth fixing portion, and the second connecting member is sleeved on the outside of the third fixing portion.

8. The fixing fixture for submarine cable armored steel wire according to claim 4, characterized in that: The first fixing member is a first annular member, and the second fixing member is a second annular member. The first annular member and the second annular member are opposite to each other so as to clamp the armor steel wire therebetween.

9. The fixing fixture for submarine cable armored steel wire according to claim 8, characterized in that: The invention further comprises a third connecting member, wherein the first annular member is provided with an annular boss, the annular boss is opposite to the second annular member, and the first connecting member is connected to the annular boss and the second annular member to clamp the armor steel wire between the annular boss and the second annular member; The third connecting piece is sleeved on the outside of the first annular piece, and the third connecting piece is used to fix the armored steel wire that passes around the annular boss.

10. An underwater joint box, characterized in that: A fixing clamp for submarine cable armored steel wires comprising the one of claims 1 to 9.

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