Composite medium-voltage cable with strong radial water-blocking protection performance

Abstract

The utility model provides a composite medium-voltage cable with strong radial water-blocking protection performance, and belongs to the technical field of cables. Comprising an outer rubber sheet, the inner wall of the outer rubber sheet is fixedly sleeved with a first protective layer, the inner wall of the first protective layer is tightly attached to a first waterproof layer, the inner wall of the first waterproof layer is fixedly sleeved with a second protective layer, the inner wall of the second protective layer is bonded with a second waterproof layer, and the inner wall of the second waterproof layer is fixedly sleeved with a buffer layer; a positioning rod is fixedly assembled on the outer wall of the buffer layer; according to the utility model, the first waterproof layer, the second waterproof layer, the first protective layer and the second protective layer are arranged, so that when the cable is laid and placed in water for power transmission operation, water is isolated by the outer rubber; and the first waterproof layer and the second waterproof layer are matched to ensure that the inner rubber sheet and the copper wire cannot be contacted through the first waterproof layer and the second waterproof layer when the outer rubber sheet is damaged, so that the probability of contact between a water body and the copper wire in the cable is reduced, and the waterproof effect of the cable is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a composite medium-voltage cable with strong radial water-blocking protection performance. Background Art

[0002] A cable is a device for transmitting electrical energy or signals, usually consisting of several or several groups of wires. Existing cables have different requirements in different scenarios. For example, cables that are immersed in water for a long time are required to have good waterproof properties.

[0003] During the processing of existing cables, it is usually necessary to use equipment to rotate the waterproof rope around the surface of the internal conductive wire. Therefore, there are high requirements for the number of turns and length of the waterproof rope. At the same time, it will also lead to insufficient number of turns of the waterproof rope during use, causing water to enter the cable and contact the wires, thereby reducing the waterproof performance of the existing cable. Therefore, the present application provides a composite medium-voltage cable with strong radial water-blocking protection performance to meet the needs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a composite medium-voltage cable with strong radial water-blocking protection performance to solve the problem that the number of turns of the existing waterproof rope is insufficient, causing water to enter the cable and contact the wires, thereby reducing the waterproof performance of the existing cable.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A composite medium-voltage cable with strong radial water-blocking protection performance comprises: an outer rubber, a first protective layer is fixedly sleeved on the inner wall of the outer rubber, a first waterproof layer is tightly fitted on the inner wall of the first protective layer, a second protective layer is fixedly sleeved on the inner wall of the first waterproof layer, a second waterproof layer is bonded to the inner wall of the second protective layer, a buffer layer is fixedly sleeved on the inner wall of the second waterproof layer, a positioning rod is fixedly assembled on the outer wall of the buffer layer, an inner rubber is provided on the outer wall of the positioning rod, and a copper wire is fixedly sleeved on the inner wall of the inner rubber.

[0007] Preferably, the number of the inner rubber skins, the buffer layer and the second waterproof layer is five, and the five inner rubber skins, the buffer layer and the second waterproof layer are evenly distributed along the inner wall of the outer rubber skin.

[0008] Preferably, the buffer layer is made of polyurethane foam material, and the first waterproof layer is made of polystyrene.

[0009] Preferably, the first protective layer and the second protective layer are both prepared from hexabromocyclododecane, and both are evenly distributed along the outer wall of the first waterproof layer in a coating manner.

[0010] Preferably, the second waterproof layer is made of a plastic film, and the outer wall of the second waterproof layer is provided with an aluminum-plated layer.

[0011] Preferably, the outer walls of the five second waterproof layers are in conflict with each other, and the positioning rod is made of metal aluminum.

[0012] Compared with the prior art, the utility model has at least the following beneficial effects:

[0013] 1. In the above scheme, by setting the first waterproof layer, the second waterproof layer, the first protective layer and the second protective layer structure, when the cable is placed in water for power transmission after laying, the water is isolated by the outer rubber, and the first waterproof layer and the second waterproof layer are used to ensure that when the outer rubber is damaged, it cannot contact the inner rubber and the copper wire through the first waterproof layer and the second waterproof layer, thereby reducing the probability of water contacting the copper wire inside the cable, thereby improving the waterproof effect of the cable.

[0014] 2. In the above scheme, the first waterproof layer and the second waterproof layer structure can be set by applying the positioning rod, and the positioning rod can facilitate the production personnel to install the five copper wires together with the buffer layer and the second waterproof layer in the first waterproof layer, so that the cable has the advantages of simpler production process and better protection performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0016] Figure 1 Schematic diagram of the three-dimensional structure of the composite medium-voltage cable with strong radial water-blocking protection performance;

[0017] Figure 2 It is a schematic diagram of the side section structure of a composite medium voltage cable with strong radial water-blocking protection performance;

[0018] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 4 Schematic diagram of the buffer layer structure of a composite medium voltage cable with strong radial water blocking protection performance;

[0020] Figure 5 Schematic diagram of the structure of a composite medium-voltage cable positioning rod with strong radial water-blocking protection performance.

[0021] [Reference Signs]

[0022] 1. Outer rubber; 2. Positioning rod; 3. Copper wire; 4. Inner rubber; 5. Buffer layer; 6. First protective layer; 7. First waterproof layer; 8. Second protective layer; 9. Second waterproof layer.

[0023] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0024] The following is a detailed description of the composite medium voltage cable with strong radial water-blocking protection performance provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0025] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0026] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0027] It will be understood that the meaning of “on,” “over,” and “above” in this disclosure should be interpreted in the broadest manner, so that “on” means not only “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” means not only “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0028] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0029] like Figure 1 and Figure 2 As shown, the embodiment of the utility model provides a composite medium-voltage cable with strong radial water-blocking protection performance, comprising an outer rubber 1, the inner wall of the outer rubber 1 is fixedly sleeved with a first protective layer 6, the inner wall of the first protective layer 6 is tightly fitted with a first waterproof layer 7, the inner wall of the first waterproof layer 7 is fixedly sleeved with a second protective layer 8, the inner wall of the second protective layer 8 is bonded with a second waterproof layer 9, the inner wall of the second waterproof layer 9 is fixedly sleeved with a buffer layer 5, the outer wall of the buffer layer 5 is fixedly equipped with a positioning rod 2, the outer wall of the positioning rod 2 is provided with an inner rubber 4, and the inner wall of the inner rubber 4 is fixedly sleeved There are copper wires 3; through the arrangement of a first protective layer 6, a first waterproof layer 7, a second protective layer 8, a second waterproof layer 9, and a buffer layer 5, when the cable is immersed in water after being laid, the outer rubber 1 protects the interior of the entire cable; when part of the outer rubber 1 is damaged, the first protective layer 6 is used to cover the first waterproof layer 7 and the second protective layer 8 of the inner layer, and the first protective layer 6 has a high waterproof performance, so that water cannot contact the first waterproof layer 7 through the first protective layer 6, thereby improving the waterproof performance of the cable.

[0030] like Figure 1 and Figure 3 As shown, the number of the inner rubber 4, the buffer layer 5 and the second waterproof layer 9 is five, and the five inner rubbers 4, the buffer layer 5 and the second waterproof layer 9 are evenly distributed along the inner wall of the outer rubber 1. By setting the second waterproof layer 9 structure, the second waterproof layer 9 is used to wrap the inner rubber 4 and the copper wire 3, and the second waterproof layer 9 is used to isolate the external interference signal, so as to ensure that the copper wire 3 reduces the interference of external factors to the copper wire 3 during the operation process, thereby improving the stability of the cable during operation.

[0031] like Figure 1 and Figure 3As shown, the buffer layer 5 is made of polyurethane foam material, and the first waterproof layer 7 is made of polystyrene. The polyurethane foam material is a new type of synthetic material with heat preservation and waterproof functions, and its thermal conductivity is low. When the cable is placed in water, it will be compressed by water pressure, so that the copper wire 3 and the inner rubber 4 will be affected by the water pressure. At this time, the buffer layer 5 will share the water pressure and use its internal open hole structure to offset the pressure, thereby improving the compression resistance of the cable. Polystyrene has a waterproof thermoplastic foam, which can further improve the waterproof performance of the cable.

[0032] like Figure 1 and Figure 3 As shown, the first protective layer 6 and the second protective layer 8 are both prepared by hexabromocyclododecane, and both are evenly distributed along the outer wall of the first waterproof layer 7 in a smearing manner. By setting the first protective layer 6 and the second protective layer 8 structure, the first waterproof layer 7 can be protected by only smearing, which has lower requirements than the existing cable processing methods. After the first protective layer 6 and the second protective layer 8 are formed, they will ensure that external water flow cannot contact the first waterproof layer 7, thereby improving the waterproof performance of the cable.

[0033] like Figure 1 and Figure 3 As shown, the second waterproof layer 9 is made of a plastic film, and the outer wall of the second waterproof layer 9 is provided with an aluminum-plated layer. Through the structure of the second waterproof layer 9 and the aluminum-plated layer provided on the outer wall of the second waterproof layer 9, aluminum has the effect of isolating signals and preventing interference, thereby ensuring that the copper wire 3 will not be interfered by external signals during operation, thereby improving the stability of the cable during operation.

[0034] like Figure 1 and Figure 5 As shown, the outer walls of the five second waterproof layers 9 are in conflict with each other, and the positioning rod 2 is made of metal aluminum. Metal aluminum has ductility and low hardness. The cable will turn during storage or laying. Therefore, on the basis of ensuring the limitation of the copper wire 3 and the inner rubber 4, the cable can maintain its flexibility. Metal aluminum also has the characteristic of being easy to process, which facilitates the production operation of the positioning rod 2.

[0035] The technical solution provided by the utility model is that the inner rubber 4 is firstly evenly wrapped around the outer wall of the copper wire 3 by a thermoplastic extrusion process, and the inner rubber 4 is solidified after being hydrogelated by cooling water, and then the inner rubber 4 and the copper wire 3 are placed on the positioning rod 2, and at this time the second waterproof layer 9 is bonded to the notch of the positioning rod 2, and then the first protective layer 6 and the second protective layer 8 are evenly applied to the inner wall and the outer wall of the first waterproof layer 7, so that any position of the first waterproof layer 7 is protected, and then the positioning rod 2 together with the copper wire 3 and the inner rubber 4 and the second waterproof layer 9 are sent into the first waterproof layer 7, and then the buffer layer 5 is filled into the gap between the positioning rod 2 and the second waterproof layer 9, and finally the outer rubber 1 is formed by the thermoplastic extrusion process, and the outer rubber 1 is solidified by condensation, so as to wrap the whole.

[0036] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0037] A person skilled in the art will appreciate that all or part of the steps in the above-mentioned embodiment method can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. Composite medium voltage cable with strong radial water-blocking protection performance, characterized in that: include: An outer rubber (1), the inner wall of the outer rubber (1) is fixedly sleeved with a first protective layer (6), the inner wall of the first protective layer (6) is closely attached with a first waterproof layer (7), the inner wall of the first waterproof layer (7) is fixedly sleeved with a second protective layer (8), the inner wall of the second protective layer (8) is bonded with a second waterproof layer (9), the inner wall of the second waterproof layer (9) is fixedly sleeved with a buffer layer (5), the outer wall of the buffer layer (5) is fixedly equipped with a positioning rod (2), the outer wall of the positioning rod (2) is provided with an inner rubber (4), and the inner wall of the inner rubber (4) is fixedly sleeved with a copper wire (3).

2. The composite medium voltage cable with strong radial water blocking performance according to claim 1, characterized in that: The number of the inner rubber skin (4), the buffer layer (5) and the second waterproof layer (9) is five, and the five inner rubber skins (4), the buffer layer (5) and the second waterproof layer (9) are evenly distributed along the inner wall of the outer rubber skin (1).

3. The composite medium voltage cable with strong radial water blocking performance according to claim 1, characterized in that: The buffer layer (5) is made of polyurethane foam material, and the first waterproof layer (7) is made of polystyrene.

4. The composite medium voltage cable with strong radial water blocking performance according to claim 1, characterized in that: The first protective layer (6) and the second protective layer (8) are both prepared from hexabromocyclododecane, and both are evenly distributed along the outer wall of the first waterproof layer (7) in a smearing manner.

5. The composite medium voltage cable with strong radial water blocking performance according to claim 1, characterized in that: The second waterproof layer (9) is made of a plastic film, and the outer wall of the second waterproof layer (9) is provided with an aluminum-plated layer.

6. The composite medium voltage cable with strong radial water blocking performance according to claim 1, characterized in that: The outer walls of the five second waterproof layers (9) are in contact with each other, and the positioning rod (2) is made of metal aluminum.

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