Cable laying from cargo hold to bottom pier area

Abstract

The utility model provides cable laying from a cargo hold to a bottom pier area, which is characterized in that a plug is arranged at the bottom end of a cable tube, and a cable penetrates through the plug and has a margin; a packaging agent is injected into the cable tube, and the curing speed is controlled through the flow of the first hose; a buffer pad is arranged between the cable tube and the plug, a second hose and a third hose which are coated with glue are arranged between the cable tube and the packaging agent, and the cables are evenly distributed in the circumferential direction of the cable tube and laid in a staggered mode. A disassembling channel is pre-buried in the packaging agent, so that the packaging agent can be disassembled under the assistance of tools such as heat expansion and cold contraction of a copper pipe or a drill rod; compressed gas is injected into the nesting position of the second hose to push the hose, and the operation process is simplified. The design has the advantages of reducing cable shaking, enhancing the attaching effect, isolating corrosion, facilitating transformation, controlling the curing speed and simplifying operation.

Description

Technical Field

[0001] This utility model relates to the field of shipbuilding technology, specifically to a cable laying method from the cargo hold to the pier area. Background Technology

[0002] Piping tunnels are important channels on ships used for laying pipes and cables. For example, in the double bottom of large container ships, piping tunnels provide space for the laying of ballast piping, electrical systems, and other wiring, allowing these lines to be arranged and connected in an orderly manner, facilitating the normal operation and maintenance of various ship systems. To optimize space design and enhance maintenance convenience, some ships, such as the 88,800 DWT bulk carrier, have adopted a piping-free design, laying electrical lines through cable conduits that sequentially pass through the deck, cargo hold bulkheads, and bottom valve boxes.

[0003] However, the vertical cable conduits and cables inside the cargo hold to the bottom pier are quite long. Currently, conventional cable fasteners, such as the quick fixing method and structure for cabin cables disclosed in the utility model patent application with announcement number CN116073301A, are not suitable for ships with large vertical cable lengths. For example, the vertical cable conduits used in the 88800DWT bulk carrier are 18 meters long. During long-term operation of the ship, the cables are prone to shaking and friction inside the cable conduits, which can easily lead to problems such as cable damage and breakage. Utility Model Content

[0004] The purpose of this utility model is to provide a cable laying method for the area from the cargo hold to the pier, which makes the cable laying suitable for long vertical cable ducts and stable installation.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A cable laying method from cargo hold to bottom pier area includes a cable conduit and a cable arranged sequentially from the outside to the inside. The cable conduit has a plug at the bottom end, the cable passes through the plug and has a spare length for use, and a sealant is injected into the inside of the cable conduit through a first flexible tube, the first flexible tube being withdrawn from the top end of the cable conduit along with the injection of the sealant.

[0007] Furthermore, a buffer pad is provided between the cable conduit and the plug.

[0008] Furthermore, a second flexible tube is provided between the cable tube and the encapsulant. Adhesive is provided on the inner side of the second flexible tube. The second flexible tube is glued to the inside of the cable tube through one end of the folded flange, and then extends into the cable tube from top to bottom and is glued to the cable tube.

[0009] Furthermore, the cables are evenly distributed around the circumference of the cable conduit.

[0010] Furthermore, a third flexible conduit is provided, the inner side of which is coated with adhesive and laid in the same manner as the second flexible conduit. The cable located between the third flexible conduit and the second flexible conduit is misaligned with the cable located between the second flexible conduit and the cable conduit.

[0011] Furthermore, the encapsulant is pre-embedded with a disassembly channel, which is coaxially arranged with the cable conduit and extends through the length of the cable conduit.

[0012] Furthermore, the disassembly channel is a copper tube, with both ends of the copper tube connected to a cold source or a heat source, so that the encapsulant is deactivated by the thermal expansion and contraction of the copper tube.

[0013] Furthermore, the encapsulating agent includes at least one of quartz sand, cement, and resin.

[0014] This utility model also provides a method for fixing cables laid in the area from the cargo hold to the bottom pier, which includes:

[0015] S1, Install the cable in the cable conduit and temporarily fix its upper end;

[0016] S2, Seal the bottom of the cable conduit, leaving sufficient space for the cable to pass through the seal;

[0017] S3, insert the first flexible tube into the cable tube from the top end of the cable tube, then inject the encapsulant into the cable tube through the first flexible tube and wait for the encapsulant to cure. Then, pull the first flexible tube out from the top end of the cable tube. The pulling speed of the first flexible tube is adapted to the curing speed of the encapsulant.

[0018] Furthermore, S2 also includes providing a buffer pad at the bottom of the cable conduit before sealing the bottom end of the cable conduit.

[0019] Furthermore, S2 also includes folding one end of the second flexible tube with adhesive on the inner side, the folded part being tightly fitted with the cable tube, then inserting the folded end of the second flexible tube into the upper end of the cable tube for preliminary adhesive bonding, and then pushing the second flexible tube to move the folded area towards the lower end of the cable tube, while simultaneously bonding the inner side of the folded edge of the second flexible tube to the inner wall of the cable tube.

[0020] Furthermore, the cables are evenly distributed around the circumference of the cable conduit.

[0021] Furthermore, S2 also includes laying the third flexible tube with adhesive coating on the inside in the same way as the second flexible tube, and the cable located between the third flexible tube and the second flexible tube is misaligned with the cable located between the second flexible tube and the cable conduit.

[0022] Furthermore, S3 also includes pre-embedded a disassembly channel in the encapsulant, the disassembly channel being coaxially arranged with the cable conduit and extending through the length of the cable conduit.

[0023] Furthermore, the disassembly channel is a copper tube, with both ends of the copper tube connected to a cold source or a heat source, so that the encapsulant is deactivated by the thermal expansion and contraction of the copper tube.

[0024] Furthermore, in S3, the extraction speed of the first hose is exponentially related to the distance from the bottom to the top of the cable tube.

[0025] Furthermore, the encapsulating agent includes at least one of quartz sand, cement, and resin.

[0026] Furthermore, the method of actuating the second hose and / or the third hose includes injecting compressed gas from the outer wall of the second hose and / or the third hose at the upper end of the cable conduit to the second hose overlap.

[0027] This utility model provides a method for laying and fixing cables in the area from the cargo hold to the bottom pier, which has the following advantages and beneficial effects:

[0028] This invention reduces cable movement by sealing the bottom of the cable conduit and then adding a sealant inside the conduit.

[0029] 2. Use second and third flexible hoses with adhesive on the inside for laying. Both types of hoses can be bonded to the cable conduit wall from both sides of the cable, which enhances the fit between the cable and the cable conduit, while also isolating the cable from the encapsulant and reducing the potential corrosive effect of the encapsulant on the cable.

[0030] 3. A disassembly channel is pre-embedded within the encapsulant. Optionally, the encapsulant can be deactivated by the thermal expansion and contraction of the copper tubing, or tools such as drill rods can be used along the disassembly channel to facilitate easier removal and replacement of the encapsulant. This feature, combined with second / third flexible conduits, also facilitates the modification of cables within cable conduits.

[0031] 4. Controlling the extraction speed of the first hose is exponentially related to the distance from the bottom to the top of the cable tube. This can effectively control the curing speed of the encapsulant, ensuring that the encapsulant can fully fill the gaps inside the cable tube while reducing working time and improving efficiency.

[0032] 5. The hose is pushed by injecting compressed gas into the overlap of the second hose from the outer wall of the second hose and / or the third hose at the upper end of the cable conduit, simplifying the operation process. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of this utility model;

[0034] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0035] In the diagram: 1. Cable conduit; 2. Cable; 3. Sealing agent; 4. First hose; 5. Second hose; 6. Third hose; 7. Buffer pad; 8. Flanged fold; 9. Adhesive; 10. Disassembly channel; 11. Detailed Implementation

[0036] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0037] Example 1

[0038] S1: Place cable 2 in cable conduit 1 and temporarily fix the upper end.

[0039] S2: After setting a buffer pad 8 at the bottom of the cable conduit 1, seal the bottom end of 3, leaving room for cable 2 to be used.

[0040] S3: Inject a sealant 4 containing quartz sand / cement through the first hose 5. The extraction speed is exponentially related to the distance from the bottom to the top of the cable pipe 1. After the sealant 4 cures, it forms a fixed structure.

[0041] Example 2

[0042] S1: Cable 2 is evenly distributed circumferentially inside cable conduit 1, and its upper end is temporarily fixed.

[0043] S2: Set a plug 3 at the bottom of the cable pipe 1, fold the inner side of the second flexible tube 6 with glue on it and insert it into the upper end of the cable pipe 1, push the folded part down, and inject compressed gas into the folded part to assist in the bonding.

[0044] S3: Inject encapsulant 4 and simultaneously pull out the first tubing at the appropriate speed.

[0045] Example 3

[0046] S1: Cable 2 is evenly distributed circumferentially inside cable conduit 1, and its upper end is temporarily fixed.

[0047] S2: Lay the second hose 6 as in Example 2. Lay the third hose 7 in the same manner outside the second hose 6, so that the two layers of cables 2 are staggered, and push the overlapping portion of the second and third hoses downward by compressed gas.

[0048] S3: The injection of encapsulant 4 and the control of the extraction speed of the first hose 5 are exponentially related to the distance from the bottom to the top of the cable tube (1), with a correlation coefficient ≥ 0.75.

[0049] Example 4

[0050] S1: Place cable 2 in cable conduit 1 and temporarily fix the upper end.

[0051] S2: After setting the buffer pad 8 at the bottom of the cable conduit 1, seal 3 to retain the remaining capacity of the cable 2.

[0052] S3: A coaxial copper tube is pre-embedded in the encapsulant 4 as a disassembly channel 11. After the encapsulant 4 (epoxy resin) is cured, a cold / hot medium can be introduced into the copper tube to make the encapsulant 4 ineffective by using thermal expansion and contraction.

[0053] Example 5

[0054] S1: Place cable 2 in cable conduit 1 and temporarily fix the upper end.

[0055] S2: After installing a buffer pad 8 at the bottom, seal the cable conduit 1. Lay the second and third flexible conduits 6 and 7 in the manner described in Example 3 and arrange the cables 2 in a staggered manner.

[0056] S3: Inject resin-containing encapsulant 4, and pre-embed a plastic tube as a disassembly channel 11. The extraction speed of the first flexible tube is exponentially related to the length of the cable tube 1, with a correlation coefficient ≥ 0.8. After the encapsulant 4 cures, it is disassembled through a drill rod.

[0057] Example 6

[0058] S1: Place cable 2 in cable conduit 1 and temporarily fix the upper end.

[0059] S2: Lay the second and third flexible hoses 6 and 7 in the manner described in Example 3 and arrange the cables in a staggered manner. Do not set the buffer pad 8 at the bottom and directly set the sealing 3.

[0060] S3: Inject cement-containing encapsulant 4, pre-embed copper pipe disassembly channel 11, control the extraction speed of the first hose 5 to adapt to the curing process.

[0061] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A cargo hold to bilge area cable laying comprising a cable tube (1) and a cable (2) arranged one inside the other, characterized in that, The bottom end of the cable tube (1) is provided with a plug (3), the cable (2) passes through the plug (3) and leaves a margin for use, and the inside of the cable tube is injected with a sealant (4) through a first flexible tube (5), and the first flexible tube (5) is withdrawn from the top end of the cable tube (2) along with the injection of the sealant (4).

2. The cable laying method from the cargo hold to the pier area according to claim 1, characterized in that, A buffer pad (8) is provided between the cable pipe (1) and the plug (3).

3. The cable laying method from the cargo hold to the bottom pier area according to claim 1, characterized in that, A second hose (6) is provided between the cable tube (1) and the encapsulant (4). Adhesive (10) is provided on the inner side of the second hose (6). The second hose (6) is glued to the inside of the cable tube (2) through one end of the flange (9), and then it is flipped from top to bottom and inserted into the cable tube (2) and glued to the cable tube (2).

4. The cable laying method from the cargo hold to the bottom pier area according to claim 3, characterized in that, The cables (2) are evenly distributed around the circumference of the cable conduit (1).

5. The cable laying method from the cargo hold to the bottom pier area according to claim 4, characterized in that, A third flexible tube (7) is also provided. The inner side of the third flexible tube (7) is coated with glue. One end of the third flexible tube (7) with a flanged overlay (9) is glued to the side of the second flexible tube (6) away from the glue (10). The cable located between the third flexible tube (7) and the second flexible tube (6) is misaligned with the cable located between the second flexible tube (6) and the cable tube (1).

6. The cable laying method from the cargo hold to the pier area according to claim 1, characterized in that, The encapsulant (4) is pre-embedded with a disassembly channel (11), which is coaxially arranged with the cable pipe (1) and extends through the length of the cable pipe (1).

7. The cable laying method from the cargo hold to the pier area according to claim 6, characterized in that, The disassembly channel (11) is a copper tube, and both ends of the copper tube are connected to a cold source or a heat source. The encapsulant (4) is rendered ineffective by the thermal expansion and contraction of the copper tube.

8. The cable laying in the cargo hold to the bottom pier area according to any one of claims 1-7, characterized in that, The encapsulant (4) includes at least one of quartz sand, cement, and resin.

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