Direct-current pulse watertight cable for shock-resistant ship

Abstract

The invention discloses an impact-resistant direct-current pulse watertight cable for ships, and relates to the technical field of cables, the impact-resistant direct-current pulse watertight cable comprises an inner core layer for protecting a cable, and further comprises an outer layer protection mechanism for relieving impact force aiming at different impact forces, the outer layer protection mechanism comprises an outer protection layer, the outer protection layer is further of a hollow structure, and the outer protection layer is provided with an inner core layer. And a plurality of groups of first longitudinal ribs and second longitudinal ribs which are oppositely arranged are arranged in the outer protection layer. According to the cable, the impact resistance can be improved according to different impact conditions, components in the outer protection mechanism can be attached together after being twisted, along with continuous twisting, the hardness of a protection layer formed between the components is higher, the twisting is more difficult, meanwhile, after the cable is twisted to a certain degree, the twisting resistance and the pulling resistance are effectively improved, and the service life of the cable is prolonged. Liquid at the impact part cannot twist, the strength of the impact position and the deformation resistance of the side area are improved, and the outer layer is reinforced.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and in particular to an impact-resistant DC pulse watertight cable for ships and warships. Background Art

[0002] A DC pulse watertight cable is a special cable mainly used in the field of high-voltage DC pulse transmission, such as equipment like radars, pulse modulators, accelerators, electromagnetic catapults, etc. The characteristic of this cable is that it can transmit a current of megaamperes within milliseconds. A watertight cable is a cable with waterproof performance and can be used in humid, underwater or high-humidity environments. They usually adopt special designs and materials to prevent moisture from seeping into the cable interior, thereby protecting the performance and safety of the cable. However, when the existing cables are in use, since they often adopt an extrusion production method and then set a part of the protective layer therein to protect the internal cables, but if the cable is impacted, the impact point of the cable will bend at this time, resulting in deformation of the internal cable and causing its damage. Therefore, in order to avoid damage to the cable at the impact point, the existing solutions add non-Newtonian fluid therein to reduce damage. However, after being impacted at this time, although the deformation amount at the impact point is small, there will still be some acting forces acting on the cable, thereby playing a role in pushing the cable. That is to say, starting from the impact point, both ends of this section connected to the two side points will be pulled. If the pulling force is too large, it will also cause damage to the cable. The existing cables cannot avoid the situation where the cable is damaged due to the pulling caused by impact. At the same time, if there is a slow pull, the existing cables cannot strengthen their strength. Summary of the Invention

[0003] The technical solution of the present invention provides a solution significantly different from the prior art for the technical problem that the prior art solution is too single. The embodiment of the present invention provides an impact-resistant DC pulse watertight cable for ships and warships to solve the technical problem that the existing cables cannot relieve the damage caused by pulling when there is a slow impact.

[0004] The embodiment of the present invention adopts the following technical solution: An impact-resistant DC pulse watertight cable for ships and warships includes an inner core layer for protecting the cable, and also includes an outer protection mechanism for relieving the impact force against different impact forces. The outer protection mechanism includes an outer protective layer.

[0005] Further, the outer protective layer is of a hollow structure, and several groups of oppositely arranged first longitudinal ribs and second longitudinal ribs are provided inside the outer protective layer. The middle position between the first longitudinal ribs and the second longitudinal ribs is divided into two parts by arranging partition ribs. The first longitudinal ribs and the second longitudinal ribs are connected with connecting annular ribs. A matching annular rib is arranged beside the connecting annular rib. A pushing rib is arranged on the matching annular rib. Two oppositely facing dividing plates are arranged on both sides of the partition rib. A circulation hole through which non-Newtonian fluid can pass is arranged on the matching annular rib.

[0006] Further, the first longitudinal ribs and the second longitudinal ribs are spiral, and the spiral directions of the first longitudinal ribs and the second longitudinal ribs are opposite.

[0007] Further, the first longitudinal ribs and the second longitudinal ribs are made of a plastically deformable material.

[0008] Further, the connecting annular rib is rotatably connected to the outer protective layer.

[0009] Further, the holes opened in the matching annular ribs at different positions are correspondingly located on both sides of the pushing rib.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: Firstly, after the cable is impacted, two relative situations of the impact are described here. One is a relatively fast and violent impact. Since the outer protective layer is a hollow structure and is filled with non-Newtonian fluid, at this time, using the characteristics of non-Newtonian fluid, when it is subjected to a violent impact, the non-Newtonian fluid will become a harder state and can disperse the force, thereby resolving the violent impact. However, when the impact occurs, there is also a relatively slow and continuous impact, which more often causes bending and pulling damage to the cable. At this time, although there is non-Newtonian fluid, the non-Newtonian fluid will be in a liquid state when encountering this situation and cannot resolve the acting force brought by the impact. At this time, each rib in the outer protection mechanism intervenes. When the impact occurs, it is often a point or a small section. After being impacted, the outer protective layer will first undergo extrusion deformation, resulting in the extrusion of the non-Newtonian fluid inside it, causing it to penetrate into the sections at both ends that are not subjected to extrusion deformation. And the non-Newtonian fluid in the adjacent sections at this time. There will be a small space between the dividing plate and the pushing rib that is not filled with non-Newtonian fluid, so that the entering non-Newtonian fluid will squeeze the pushing rib to drive the connecting annular rib to rotate, and the rotation of the connecting annular rib will drive the adjacent first longitudinal rib and the second longitudinal rib to twist, just like wringing a towel, strengthening the outer layer, making it impossible for the side section to be pulled and bent, thus effectively improving the impact resistance of the cable under different degrees. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0012] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the first perspective structure of the outer protection mechanism of the present invention; Figure 3 It is a schematic diagram of the second perspective structure of the outer protection mechanism of the present invention; Figure 4 It is a schematic diagram of the third perspective structure of the outer protection mechanism of the present invention.

[0013] Reference numerals: 1, inner core layer; 2, outer protection mechanism; 21, connecting annular rib; 22, mating annular rib; 23, through hole; 24, partition rib; 25, pushing rib; 26, outer protective layer; 27, first longitudinal rib; 28, second longitudinal rib; 29, dividing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The following will clearly and completely describe the technical solutions of the present invention with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0015] Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention.

[0016] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0019] As shown below in combination with Figures 1 to 4 An anti-impact DC pulsed watertight cable for ships is provided in an embodiment of the present invention, which includes an inner core layer 1 for protecting the cable, and further includes an outer protection mechanism 2 for relieving the impact force against different impact forces. The outer protection mechanism 2 includes an outer protection layer 26.

[0020] Specifically, the outer protection layer 26 is a hollow structure, and a number of groups of relatively arranged first longitudinal ribs 27 and second longitudinal ribs 28 are provided inside the outer protection layer 26. The middle position between the first longitudinal ribs 27 and the second longitudinal ribs 28 is divided into two parts by arranging a partition rib 24. The first longitudinal ribs 27 and the second longitudinal ribs 28 are connected with a connecting annular rib 21. A matching annular rib 22 is arranged beside the connecting annular rib 21. A pushing rib 25 is arranged on the matching annular rib 22. Two split plates 29 facing each other are arranged on both sides of the partition rib 24. A circulation hole 23 through which non-Newtonian fluid can pass is arranged on the matching annular rib 22.

[0021] Specifically, the first longitudinal ribs 27 and the second longitudinal ribs 28 are spiral, and the spiral directions of the first longitudinal ribs 27 and the second longitudinal ribs 28 are opposite.

[0022] Specifically, the first longitudinal ribs 27 and the second longitudinal ribs 28 are made of a plastically deformable material.

[0023] During operation, there is a certain gap between the first longitudinal rib 27 and the second longitudinal rib 28 in the initial state, enabling the cable to have a certain bending ability. After the first longitudinal rib 27 and the second longitudinal rib 28 are twisted, they will fit together. As the twisting continues, the hardness of the protective layer formed between them becomes higher and it becomes more difficult to twist. At the same time, after twisting to a certain extent, both the anti-twisting ability and the anti-pulling ability are effectively improved, preventing the liquid at the impact site from twisting, enhancing the strength at the impact position, and the anti-deformation ability of the side regions.

[0024] Specifically, the connecting annular rib 21 is rotatably connected to the outer protective layer 26, enabling the connecting annular rib 21 to be twisted.

[0025] Specifically, the holes formed in the mating annular ribs 22 at different positions are correspondingly located on both sides of the pushing rib 25. When the cable is in use, the outer protection mechanism 2 is sleeved outside the extruded inner core layer 1.

[0026] During operation, when extrusion is performed, the oppositely arranged connecting annular ribs 21 will deflect in different directions.

[0027] Working principle: When the cable is in use and is impacted, the following explains according to two relative situations of the impact. One is a relatively rapid and violent impact. Since the outer protective layer 26 is a hollow structure and filled with non-Newtonian fluid, at this time, using the characteristics of non-Newtonian fluid, when subjected to a violent impact, the non-Newtonian fluid will change into a harder state and can disperse the force, thus resolving the violent impact. However, during impact, there is also a relatively slow and continuous impact, which causes more bending and pulling damage to the cable at this time. Although there is non-Newtonian fluid provided, when the non-Newtonian fluid encounters this situation, it will be in a liquid state and cannot be resolved. At this time, each rib in the outer protection mechanism 2 intervenes. During impact, it is often a point or a small section. After being impacted, the outer protective layer 26 will first undergo compressive deformation, resulting in the extrusion of the non-Newtonian fluid inside it, causing it to penetrate into the non-compressively deformed sections at both ends (that is, the liquid flows to both sides). There is a small space filled with non-Newtonian fluid between the partition plate 29 and the push rib 25, so that the incoming non-Newtonian fluid will squeeze the push rib 25 to drive the connecting annular rib 21 to rotate. At this time, due to the influence of the positions of the flow holes 23 in the cooperating annular rib 22 at different positions, the cooperating annular rib 22 will twist in different directions. The rotation of the connecting annular rib 21 will drive the adjacent first longitudinal rib 27 and second longitudinal rib 28 to twist. Just like wringing a towel, there is a certain gap between the first longitudinal rib 27 and the second longitudinal rib 28 in the initial state, so that the cable has a certain bending ability. After the first longitudinal rib 27 and the second longitudinal rib 28 are twisted, they will fit together, and as they are continuously twisted, the hardness of the formed protective layer is higher and it is more difficult to twist. At the same time, after twisting to a certain extent, the anti-twisting ability and anti-pulling ability are effectively improved, so that the liquid at the impact position cannot be twisted, the strength of the impact position is increased, and the anti-deformation ability of the side area is improved, strengthening the outer layer, preventing it from being pulled and bent in the side section, and thus effectively improving the anti-impact force of the cable under different degrees.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A DC pulse watertight cable for shock-resistant ships, comprising an inner core layer (1) for protecting the cable, characterized in that; It also comprises an outer layer protection mechanism (2) for alleviating impact forces according to different impact forces, and the outer layer protection mechanism (2) comprises an outer protection layer (26).

2. A DC pulse watertight cable for shock-resistant ships according to claim 1, characterized in that; The outer protective layer (26) is a hollow structure, and a plurality of groups of first longitudinal ribs (27) and second longitudinal ribs (28) are arranged in the outer protective layer (26) in a relative manner. The first longitudinal ribs (27) and the second longitudinal ribs (28) are divided into two parts by a partition rib (24) arranged in the middle position. A connecting annular rib (21) is arranged to connect the first longitudinal ribs (27) and the second longitudinal ribs (28). A matching annular rib (22) is arranged on the side of the connecting annular rib (21). A pushing rib (25) is arranged on the matching annular rib (22). Two partition plates (29) facing opposite directions are arranged on both sides of the partition rib (24). A flow hole (23) for non-Newtonian fluid to pass through is arranged on the matching annular rib (22).

3. A DC pulse watertight cable for shock-resistant ships according to claim 2, characterized in that; The first longitudinal rib (27) and the second longitudinal rib (28) are spirally shaped, and the spiral directions of the first longitudinal rib (27) and the second longitudinal rib (28) are opposite.

4. A DC pulse watertight cable for shock-resistant ships according to claim 2, characterized in that; The first longitudinal rib (27) and the second longitudinal rib (28) are made of a plastically deformable material.

5. A DC pulse watertight cable for shock-resistant ships according to claim 2, characterized in that; The connecting annular rib (21) is rotationally connected to the outer protective layer (26).

6. A DC pulse watertight cable for shock-resistant ships according to claim 2, characterized in that; The holes formed by the matching annular ribs (22) at different positions are correspondingly located on both sides of the pushing rib (25).

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