Cable storage device and tension bending test system

Abstract

The present application relates to a kind of submarine cable storage device and tension bending test system, submarine cable storage device includes multiple cable storage racks, all cable storage racks are enclosed into annular cable storage structure, annular cable storage structure has first end and second end, opening is formed between first end and second end, traction machine is provided at opening, each cable storage rack includes rack body, rack body is provided with multiple first transverse wire wheels sequentially arranged from top to bottom, and first transverse wire wheel is used to bear submarine cable.The present application also relates to a kind of submarine cable tension bending test system based on the above-mentioned submarine cable storage device.The present application can carry out the quick switching of different submarine cable sample bending test, and improve test efficiency.

Description

Technical Field

[0001] This invention relates to the field of submarine cable technology, and in particular to a submarine cable storage device and a tension bending test system. Background Technology

[0002] During the laying or emergency repair of submarine cables, significant forces are generated on the cable body due to its own weight. To verify whether these forces adversely affect the cable's lifespan, a tension bending test is required. Existing tension bending test procedures include... Figures 1-2 As shown, after the submarine cable sample is produced, it is transported to the tension bending test site. The sample is then placed on a rotating wheel. Both ends of the sample are connected to the steel wire ropes led out by the traction pulleys via traction heads. The traction pulleys are connected to the hydraulic tension body, which provides traction force to the sample, simulating the weight of the cable during loading and laying. The steel wire ropes led out by the winch are connected to the corresponding traction heads. The winch drives the sample to continuously wind and unwind on the rotating wheel, thus conducting a tension bending test on the sample.

[0003] With the development of the submarine cable industry, there is a trend towards larger nominal cross-sections and higher voltage levels in submarine cables. Tension bending testing, as a prerequisite for electrical testing of submarine cable systems, directly impacts the testing progress of subsequent type tests. However, existing tension bending testing systems have a single testing path. The second submarine cable sample can only be laid after the first sample has been tested and exited the testing path. This results in conflicting sample laying paths between tests, preventing continuous testing and hindering rapid switching between different submarine cable samples. This leads to low process efficiency and affects the progress of subsequent tests. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the shortcomings of the existing submarine cable tension bending test system, which is unable to quickly switch between different submarine cable samples and affects the test efficiency.

[0005] To solve the above-mentioned technical problems, the present invention provides a submarine cable storage device, including multiple cable storage racks, all of which are arranged in a ring-shaped cable storage structure. The ring-shaped cable storage structure has a first end and a second end, with an opening between the first end and the second end. A traction machine is provided at the opening. Each cable storage rack includes a frame body, and multiple first transverse cable guide rollers are arranged sequentially from top to bottom on the frame body. The first transverse cable guide rollers are used to support the submarine cable.

[0006] In one embodiment of the present invention, each of the first horizontal cable guide rollers on the frame is provided with a first vertical cable guide roller on both sides, and a receiving space for accommodating the submarine cable is formed between the first horizontal cable guide rollers and the first vertical cable guide rollers on both sides.

[0007] In one embodiment of the present invention, a lifting device is provided between the tractor and the first end, and a lifting device is also provided between the tractor and the second end.

[0008] A submarine cable tension bending test system includes a submarine cable storage device as described in any of the above claims. The annular cable storage structure has a rotating wheel at one end and a tension device at the other end. A first wire rope traction device is provided on one side of the tension device, and a second wire rope traction device is provided on the other side.

[0009] In one embodiment of the present invention, a first path is formed between the first wire rope traction device and the swivel, and a second path is formed between the second wire rope traction device and the swivel. A plurality of auxiliary wire-passing devices are sequentially arranged along the direction of the first path, and a plurality of auxiliary wire-passing devices are also sequentially arranged along the direction of the second path.

[0010] In one embodiment of the present invention, the auxiliary wire guiding device includes a bracket, on which a second transverse wire guiding wheel is provided.

[0011] In one embodiment of the present invention, a limiting member is provided on the outer side of the spool, and the limiting member and the spool are used to accommodate the submarine cable.

[0012] In one embodiment of the present invention, a transition line crossing device is provided between the first path and the first wire rope traction device, and a transition line crossing device is also provided between the second path and the second wire rope traction device.

[0013] In one embodiment of the present invention, the transition line device is inclined.

[0014] In one embodiment of the present invention, the transition cable passing device includes a plurality of cable storage racks connected in sequence.

[0015] The technical solution of the present invention has the following advantages compared with the prior art:

[0016] The submarine cable storage device and tension bending test system described in this invention can store multiple layers of submarine cables. Each layer of submarine cable can be used independently during tension bending tests without interference. It also allows for rapid switching between bending tests of different submarine cable samples, thus improving testing efficiency. Attached Figure Description

[0017] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0018] Figure 1This is a schematic diagram of the structure of a tension bending testing machine in the prior art;

[0019] Figure 2 yes Figure 1 Top view of the structure shown;

[0020] Figure 3 This is a top view schematic diagram of the submarine cable storage device of the present invention;

[0021] Figure 4 This is a schematic diagram of the path of the submarine cable sample passing through the traction machine in this invention;

[0022] Figure 5 This is a schematic diagram of the path of the submarine cable sample through multiple cable storage racks;

[0023] Figure 6 This is a front view of the cable storage rack in this invention;

[0024] Figure 7 yes Figure 6 Right view of the structure shown;

[0025] Figure 8 yes Figure 6 Top view of the structure shown;

[0026] Figure 9 This is a front view of the auxiliary wire guiding device in this invention;

[0027] Figure 10 yes Figure 9 Right view of the structure shown;

[0028] Figure 11 yes Figure 9 Top view of the structure shown;

[0029] Figure 12 This is a top view of the state at which the submarine cable tension bending test system of the present invention begins to store cables;

[0030] Figure 13 This is a schematic diagram of the cable storage state of the submarine cable tension bending test system of the present invention at the end;

[0031] Figure 14 This is a diagram showing the cable laying state of the submarine cable tension bending test system of the present invention before testing;

[0032] Figure 15 This is a schematic diagram of the state of the submarine cable tension bending test system of the present invention during tension bending test;

[0033] Figure 16 This is a schematic diagram of the state of the submarine cable tension bending test system of the present invention after performing a tension bending test and then storing the cable again.

[0034] Figure 17This is a schematic diagram of the state of the submarine cable tension bending test system of the present invention after the tension bending test is performed and the cable is reeled in.

[0035] Explanation of reference numerals on the accompanying drawings:

[0036] 1. Winch; 2. Traction head; 3. Traction pulley; 4. Hydraulic tension column; 5. Wire rope; 6. Reel; 7. Submarine cable sample; 8. Ring cable storage structure; 81. First end; 82. Second end; 83. Opening; 9. Cable storage frame; 91. Frame body; 92. First transverse guide sheave; 93. First vertical guide sheave; 10. Traction machine; 11. Lifting device; 12. Auxiliary guide sheave device; 121. Support; 122. Second transverse guide sheave; 13. Tension device; 14. First wire rope traction device; 15. Second wire rope traction device; 16. First path; 17. Second path; 18. Limiting component; 19. Transition guide sheave device; 20. Auxiliary rope; 21. Reel. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0038] Reference Figures 3-5 As shown, the present invention relates to a submarine cable storage device, comprising multiple cable storage racks 9, all of which are arranged in a ring-shaped cable storage structure 8. The ring-shaped cable storage structure 8 has a first end 81 and a second end 82, with an opening 83 formed between the first end 81 and the second end 82. A traction machine 10 is provided at the opening 83 for traction of submarine cables or steel wire ropes 5. Each cable storage rack 9 includes a frame 91, on which multiple first transverse cable guide wheels 92 are arranged sequentially from top to bottom. The first transverse cable guide wheels 92 are used to support submarine cables.

[0039] The aforementioned annular cable storage structure 8 forms an annular cable storage path for storing submarine cables. Since each cable storage rack 9 is equipped with multiple first transverse cable guide rollers 92 from top to bottom, multiple layers of submarine cables can be stored without interference. Each layer of submarine cables can be retrieved independently during tension and bending tests without interference. The aforementioned annular cable storage structure 8 forms a multi-layer storage path, and each layer can store different submarine cable samples 7. Thus, after the submarine cable tension and bending test system completes the test of one submarine cable sample 7, the test of the next layer of submarine cable sample 7 can be conveniently carried out without re-laying, thereby enabling rapid switching between different submarine cable sample tests and improving testing efficiency.

[0040] Each first transverse guide wheel 92 corresponds to a storage path. During storage, the first transverse guide wheel 92 of each layer supports the corresponding submarine cable sample 7 and rotates accordingly during the transmission of the submarine cable sample 7.

[0041] In one implementation, such as Figures 6-8 As shown, each first horizontal cable guide spool 92 on the frame 91 has a first vertical cable guide spool 93 on both sides. A receiving space for the submarine cable is formed between the first horizontal cable guide spool 92 and the first vertical cable guide spools 93 on both sides, allowing the cable to pass through. The first vertical cable guide spools 93 on both sides act as left and right limiters for the submarine cable, and can rotate when subjected to the force of the submarine cable.

[0042] In one implementation, such as Figure 4 As shown, a lifting device 11 is provided between the traction machine 10 and the first end 81, and a lifting device 11 is also provided between the traction machine 10 and the second end 82. The lifting device 11 is used to lift the submarine cable sample 7 on both sides of the traction machine 10 to a certain height, so that the submarine cable sample 7 can be introduced into the traction machine 10 and led out from the traction machine 10 into the cable storage rack 9.

[0043] The aforementioned lifting device 11 can be a hydraulic jack.

[0044] Furthermore, an auxiliary line-passing device 12 is provided on one side of the traction machine 10, such as... Figures 9-11 As shown, the auxiliary cable guiding device 12 includes a bracket 121, on which a second transverse cable guiding wheel 122 is provided for supporting the submarine cable. Since submarine cables are generally heavy, the second transverse cable guiding wheel 122 is provided before the submarine cable is introduced into the traction machine 10 to provide auxiliary support for the submarine cable. The second transverse cable guiding wheel 122 rotates as the submarine cable moves forward.

[0045] like Figures 12-17 As shown, this embodiment also discloses a submarine cable tension bending test system based on the above-mentioned submarine cable storage device. A rotating wheel 6 is provided at one end of the annular cable storage structure 8, and a tension device 13 is provided at the other end. A first wire rope traction device 14 is provided on one side of the tension device 13, and a second wire rope traction device 15 is provided on the other side. The tension device 13 is used to provide tension to the wire rope 5.

[0046] In one embodiment, a first path 16 is formed between the first wire rope traction device 14 and the reel 6, and a second path 17 is formed between the second wire rope traction device 15 and the reel 6. Multiple auxiliary cable-passing devices 12 are sequentially arranged along the first path 16, and multiple auxiliary cable-passing devices 12 are also sequentially arranged along the second path 17. These multiple auxiliary cable-passing devices 12 provide auxiliary support for the submarine cable, facilitating its transport.

[0047] The auxiliary cable guiding device 12 includes a bracket 121, on which a second transverse cable guiding wheel 122 is provided to provide auxiliary support for the test submarine cable. The second transverse cable guiding wheel 122 rotates as the submarine cable advances.

[0048] In one embodiment, an auxiliary cable guide device 12 is provided between the traction machine 10 and the second end 82 to support the submarine cable entering the opening 83.

[0049] In one embodiment, a limiting member 18 is provided on the outer side of the swivel 6. The limiting member 18 is located inside the annular cable storage structure 8, and a space for accommodating the submarine cable is formed between the limiting member 18 and the swivel 6. When the submarine cable passes through the swivel 6, if the traction force suddenly disappears, the submarine cable will lose its tension and be thrown out of the swivel 6. Since the submarine cable has a large outer diameter and heavy weight, it is difficult to put it back on the swivel 6 after it is thrown out. Therefore, the limiting member 18 is provided so as to prevent the submarine cable from being thrown out when the traction force is lost.

[0050] Furthermore, in order to achieve a better limiting effect, multiple limiting components 18 can be arranged circumferentially around the outer periphery of the rotating wheel 6.

[0051] The aforementioned limiting component 18 can be made of circular steel pipe.

[0052] In one embodiment, a transition cable guide device 19 is provided between the first path 16 and the first wire rope traction device 14, and a transition cable guide device 19 is also provided between the second path 17 and the second wire rope traction device 15, so as to provide a transitional guidance for the submarine cable, so that the submarine cable can smoothly enter the first path 16 / second path 17 from the annular cable storage structure 8, or smoothly enter the annular cable storage structure 8 from the first path 16 / second path 17.

[0053] In one embodiment, the transition cable transfer device 19 is inclined to facilitate the transition and transport of the submarine cable.

[0054] Furthermore, the transition line devices 19 on both sides can be arranged in a figure-eight shape.

[0055] In one embodiment, the transition cable passing device 19 includes a plurality of cable storage racks 9 connected in sequence.

[0056] The following example illustrates the method of using the above-mentioned tension bending test system to perform tension bending tests on submarine cables:

[0057] The submarine cable undergoing the tension bending test is called submarine cable sample 7. The submarine cable sample 7 is wound into the reel 21 and transported to the tension bending test site.

[0058] The auxiliary rope 20 connects the traction end of the traction machine 10 to the submarine cable sample 7, and the traction machine 10 is started to pull the auxiliary rope, thereby pulling the submarine cable sample 7. When the submarine cable sample 7 approaches the traction machine 10, the lifting device 11 near the second end 82 lifts it up so that it can be guided into the traction machine 10 so that the traction machine 10 can directly pull the submarine cable sample 7. Then the auxiliary rope is removed and can be wound up for the next use.

[0059] After one end of the submarine cable sample 7 emerges from the traction machine 10, the lifting device 11 near the first end 81 adjusts the height of the submarine cable sample 7, allowing it to smoothly enter the first layer of the storage path of the annular cable storage structure 8, thus ensuring that the submarine cable sample 7 is located on the first transverse guide wheel 92 of the cable rack in that layer; Figure 12 As shown, the traction machine 10 continuously pulls the submarine cable sample 7. During this process, the submarine cable sample 7 gradually advances along the first transverse guide wheel 92 of the first layer of storage path until the other end of the submarine cable sample 7 is completely detached from the traction machine 10, thus ensuring that the submarine cable sample 7 completely enters the annular cable storage structure 8. Figure 13 As shown, the storage of a submarine cable sample is now complete.

[0060] Following the same method described above, different submarine cable samples can be stored in the second storage path, third storage path, and other storage paths of the ring-shaped cable storage structure 8.

[0061] Before performing the tension bending test, one end of the submarine cable sample 7 should generally be as close as possible to the opening 83 of the annular cable storage structure 8. If the length of the submarine cable sample 7 is too short, it will not be sufficient to conduct the signal to the opening 83 of the annular cable storage structure. Figure 13 As shown, another auxiliary rope 20 can be used for auxiliary traction to guide the submarine cable sample 7 to the opening 83 of the annular cable storage structure.

[0062] After the submarine cable sample 7 is stored, as follows Figure 14 As shown, one end of the submarine cable sample 7 is connected to one end of the steel wire rope 5. The steel wire rope 5 is wound around the swivel 6 and then connected to the second steel wire rope traction device 15. The second steel wire rope traction device 15 pulls the submarine cable sample 7 to release the cable, so that the submarine cable sample 7 is led out from the ring cable storage structure 8 and enters the auxiliary cable passing device 12 in the first path 16 and gradually moves towards the swivel 6. When the submarine cable sample 7 moves to the set position, the other end of the steel wire rope 5 is wound around the tension device 13 and then output through the first steel wire rope traction device 14 and connected to the other end of the submarine cable sample 7.

[0063] The tension bending test can then be performed. During the test, if... Figure 15As shown, the second wire traction device first pulls the wire rope 5, causing the submarine cable sample 7 to complete one winding on the rotating wheel 6 (one end of the submarine cable sample 7 starts winding on the rotating wheel 6 until the other end of the submarine cable sample 7 is detached from the rotating wheel 6). At this time, the first traction wire traction device does not work. Then, the second wire traction device stops working, and the first traction wire traction device is started. The first wire traction device pulls the wire rope 5, causing the submarine cable sample 7 to complete one unwinding on the rotating wheel 6 (the submarine cable sample 7 is wound in the opposite direction on the rotating wheel 6 until the submarine cable sample 7 is detached from the rotating wheel 6). The same winding and unwinding are performed three times. The bending tension of the submarine cable can be tested through the above winding and unwinding, thereby verifying the mechanical properties of the submarine cable sample 7.

[0064] After completing the tension and bending test on one submarine cable sample, two cable transmission routes are available for selection. One is after the test is completed, such as... Figure 16 As shown, the submarine cable sample 7 is then stored again in the corresponding storage layer of the annular cable storage structure 8. This method is suitable for situations where external resources are limited, making it impossible to wind the submarine cable sample 7 into the reel 21. In this case, the tested submarine cable sample 7 can be temporarily stored to free up the testing path. Secondly, as shown... Figure 17 As shown, the submarine cable sample 7 can be directly wound into the reel 21. During operation, the submarine cable sample 7 and the steel wire rope 5 are first disconnected. The subsequent operation method is the opposite of the method of releasing the submarine cable sample 7 from the reel 21 and storing it in the ring storage structure. The wound submarine cable sample 7 can then be transferred or transported. This route does not occupy the test path and does not affect the test of the next submarine cable sample 7.

[0065] After the tension bending test of one submarine cable sample 7 is completed, the tested submarine cable sample 7 is stored again in the corresponding storage layer of the annular cable storage structure 8 or wound into the reel 21. The test path is then cleared. At this time, the second submarine cable sample 7 stored in other layers of the annular storage structure can be directly introduced into the turntable 6 for tension bending test. There is no need to lay the second submarine cable sample 7 again. The tension bending test method is the same as that of the previous submarine cable sample 7, which involves three windings and unwindings. It will not be described in detail here.

[0066] The above method allows for rapid switching between different submarine cable samples for testing. The preparation before testing and the follow-up after testing have a good path and will not cause conflicts, which greatly improves testing efficiency.

[0067] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A submarine cable tension bending test system, characterized in that: The device includes a submarine cable storage unit, which comprises multiple cable storage racks arranged in a ring-shaped structure. The ring-shaped structure has a first end and a second end, with an opening between them. A traction machine is installed at the opening. Each cable storage rack includes a frame body, on which multiple first transverse cable guide rollers are arranged sequentially from top to bottom. These first transverse cable guide rollers support the submarine cable. A lifting device is installed between the traction machine and the first end, and another lifting device is installed between the traction machine and the second end. The annular cable storage structure has a rotating wheel at one end and a tension device at the other end. A first wire rope traction device is provided on one side of the tension device, and a second wire rope traction device is provided on the other side. Submarine cable test samples from different storage paths in the submarine cable storage device can be independently taken to the swivel and tension device for continuous testing.

2. The submarine cable tension bending test system according to claim 1, characterized in that: The submarine cable storage device has a first vertical cable guide on both sides of each first horizontal cable guide on the frame, and a storage space for accommodating the submarine cable is formed between the first horizontal cable guide and the first vertical cable guide on both sides.

3. The submarine cable tension bending test system according to claim 1, characterized in that: A first path is formed between the first wire rope traction device and the slewing wheel, and a second path is formed between the second wire rope traction device and the slewing wheel. Multiple auxiliary wire-passing devices are sequentially arranged along the direction of the first path, and multiple auxiliary wire-passing devices are also sequentially arranged along the direction of the second path.

4. The submarine cable tension bending test system according to claim 3, characterized in that: The auxiliary wire guiding device includes a bracket, on which a second transverse wire guiding wheel is provided.

5. The submarine cable tension bending test system according to claim 1, characterized in that: A limiting member is provided on the outer side of the swivel, and the space between the limiting member and the swivel is used to accommodate the submarine cable.

6. The submarine cable tension bending test system according to claim 3, characterized in that: A transition line crossing device is provided between the first path and the first wire rope traction device, and a transition line crossing device is also provided between the second path and the second wire rope traction device.

7. The submarine cable tension bending test system according to claim 6, characterized in that: The transition line device is set at an angle.

8. The submarine cable tension bending test system according to claim 6, characterized in that: The transition cable passing device includes multiple cable storage racks connected in sequence.

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