Liquid Cable

Abstract

The present invention provides a liquid cable, comprising: an elastic sealing tube, wherein a terminal is provided at the end of the elastic sealing tube; a plurality of insulators, wherein the plurality of insulators are sequentially arranged in the lumen of the elastic sealing tube at intervals, and the lumen of the elastic sealing tube is divided into a plurality of sub-lumens; a conductive liquid, wherein the conductive liquid fills and expands the elastic sealing tube, so that a gap is formed between the inner wall of the elastic sealing tube and the insulator, and adjacent sub-lumens are connected; in the case of leakage of the elastic sealing tube, the elastic sealing tube shrinks and fits with the insulator to cut off the adjacent sub-lumens. The liquid cable of the present invention can cut off the connecting path of the conductive liquid in the adjacent sub-lumens in the case of leakage of the liquid cable, thereby cutting off the conductive path and avoiding safety accidents.

Description

Technical Field

[0001] The invention belongs to the technical field of cables, and in particular relates to a liquid cable. Background Art

[0002] Usually, a cable is composed of several or several groups of wires. Each group of wires is composed of at least two wires twisted together to form a rope-like structure. Each group of wires is insulated from each other and are often twisted around a center wire. The entire outside is covered with a highly insulating covering layer and is used for high-voltage electrical energy transmission in generation, distribution, transmission, transformation and power supply lines.

[0003] In addition, when the cable breaks or the insulation layer falls off, some cables still have conductive functions, which poses a safety hazard and leads to safety accidents in actual applications, causing significant losses to people's lives and property.

[0004] At present, the liquid cables with basic cable functions sold on the market are very dangerous if the conductors break and the conductive liquid leaks without protective measures. In actual use, it is inevitable that the liquid cable will break and the insulation layer will be damaged. The terminals at both ends of the liquid cable are still connected to the conductive liquid, which is easy to cause leakage and poses a major safety hazard. Summary of the invention

[0005] In view of the above problems existing in the prior art, the present invention provides a liquid cable capable of automatically cutting off a conductive path.

[0006] To achieve the above purpose, the technical solution adopted by the embodiment of the present invention is:

[0007] A liquid cable, comprising:

[0008] An elastic sealing tube, wherein a connection terminal is provided at the end of the elastic sealing tube;

[0009] A plurality of insulators, wherein the plurality of insulators are sequentially arranged in the lumen of the elastic sealing tube at intervals, and divide the lumen of the elastic sealing tube into a plurality of sub-lumens;

[0010] Conductive liquid fills and expands the elastic sealing tube to form a gap between the inner wall of the elastic sealing tube and the insulator and to connect the adjacent sub-cavities; in the event of leakage of the elastic sealing tube, the elastic sealing tube shrinks and fits with the insulator to cut off the adjacent sub-cavities.

[0011] Preferably, a limiting portion for limiting the movement of the insulator along the length direction of the elastic sealing tube is provided between adjacent sub-cavities.

[0012] Preferably, the limiting portion comprises a valve cavity which is arranged between adjacent sub-cavities and has a shape matching that of the insulator, and the insulator is arranged in the valve cavity.

[0013] Preferably, the diameter of the valve cavity is larger than the diameter of the sub-lumen, and the diameter of the insulator is larger than the diameter of the sub-lumen when expanded.

[0014] Preferably, the insulator is a spherical insulator.

[0015] Preferably, the insulator is a ceramic body, a glass body or a bakelite body.

[0016] Preferably, the wiring terminal is a copper wiring terminal, an aluminum wiring terminal or a silver wiring terminal.

[0017] Preferably, a connection hole is provided at one end of the wiring terminal, and the other end of the wiring terminal extends into the elastic sealing tube and is sealed and connected to the elastic sealing tube.

[0018] Preferably, one or more liquid adding ports are provided on the tube wall of the elastic sealing tube, and a liquid adding valve is provided at the liquid adding port.

[0019] Preferably, the elastic sealing tube comprises a sealing layer, an insulating layer and a protective layer which are sequentially arranged from the inside to the outside.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The liquid cable of the embodiment of the present invention can automatically cut off the current when leakage occurs in the liquid cable by sequentially arranging a plurality of insulators at intervals in the lumen of the elastic sealing tube and dividing the lumen of the elastic sealing tube into a plurality of sub-lumens. The liquid cable is safe and reliable to use and can effectively prevent accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a liquid cable in a normal use state according to an embodiment of the present invention;

[0023] Figure 2 It is a structural schematic diagram of a liquid cable in a leakage state according to an embodiment of the present invention.

[0024] Description of Reference Numerals

[0025] 1 elastic sealing tube 2 insulator 3 conductive liquid 4 sub-tube cavity

[0026] 5 filling valve 6 limit part 7 wiring terminal 8 connection hole DETAILED DESCRIPTION

[0027] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings, but are not intended to limit the present invention.

[0028] In the actual power transmission process, when the liquid cable breaks and the insulation layer is damaged, the connection terminals 7 at both ends of the liquid cable are still connected to the conductive liquid 3, so there is always a major hidden danger of safety accidents due to leakage.

[0029] In order to avoid the above technical problems involving safety, the embodiment of the present invention discloses a liquid cable, combined with Figure 1 and Figure 2 The liquid cable comprises an elastic sealing tube 1, a plurality of insulators 2 and a conductive liquid 3; wherein a terminal 7 is provided at the end of the elastic sealing tube 1; a plurality of insulators 2 are sequentially arranged in the lumen of the elastic sealing tube 1 at intervals, and the lumen of the elastic sealing tube 1 is divided into a plurality of sub-lumens 4; the conductive liquid 3 fills and expands the elastic sealing tube 1, so that a gap is formed between the inner wall of the elastic sealing tube 1 and the insulator 2, and adjacent sub-lumens 4 are connected, thereby making the conductive path formed by the conductive liquid 3 in a connected state, thereby ensuring the normal use function of the liquid cable; in the case of leakage of the elastic sealing tube 1, the elastic sealing tube 1 shrinks and fits with the insulator 2 to cut off the adjacent sub-lumens 4, so that the conductive liquid 3 in the adjacent sub-lumens 4 is disconnected, and the conductive path formed by the conductive liquid 3 is cut off, thereby avoiding leakage at the leakage point of the elastic sealing tube 1.

[0030] In some embodiments, a stopper 6 for limiting the movement of the insulator 2 along the length direction of the elastic sealing tube 1 is provided between adjacent sub-cavities 4 to avoid arbitrary movement of the insulator 2 and maintain a balanced length setting of the sub-cavities 4. For example, when the lengths of the sub-cavities 4 are relatively equal, no matter if the conductive liquid 3 leaks in any sub-cavity 4, the adjacent sub-cavities 4 can be quickly cut off within a reasonable time, disconnecting the connection between the conductive liquids 3 in the adjacent sub-cavities 4, and on this basis, the conductive path formed by the conductive liquid 3 is in a disconnected state.

[0031] In some embodiments, the limiting portion 6 includes a valve cavity connected between adjacent sub-cavities 4 and having a shape matching that of the insulator 2, and the insulator 2 is arranged in the valve cavity. In particular, the diameter of the valve cavity is larger than the diameter of the sub-cavity 4, and the diameter of the insulator 2 is larger than the diameter of the sub-cavity 4 when expanded; thereby, the movement of the insulator 2 in the elastic sealing tube 1 can be effectively limited; regarding the structural shape of the valve cavity, for example, it can be set as a concave ring extending from the inside to the outside perpendicular to the length direction of the elastic sealing tube 1. In the event of leakage of the conductive liquid 3, as the sub-cavity 4 shrinks rapidly, the inner wall of the concave ring forms a tight adhesion with the outer surface of the insulator 2, thereby preventing the conductive liquid 3 from leaking outward through the gap between the inner wall of the concave ring and the insulator 2, so that the conductive path formed by the conductive liquid 3 is in a disconnected state. The specific structure of the valve cavity is not further limited in this embodiment, as long as the shape of the valve cavity matches that of the insulator 2, and accordingly, the specific structure of the insulator 2 can be adjusted according to needs.

[0032] In some embodiments, in order to effectively cut off the adjacent sub-cavities 4, in particular, the insulator 2 is set as a spherical insulator. In addition, it can also be set as other structures similar to the spherical structure, for example, an ellipsoidal insulator, wherein the long axis of the ellipsoidal insulator is arranged along the length direction of the elastic sealing tube 1; in addition, in order to reduce the weight of the liquid cable and increase the service life of the liquid cable, the insulator 2 can also be set as a hollow structure. Since the material used to make the insulator 2 is reduced, the material cost is significantly reduced, and it can still meet the working requirements. The setting of the specific structure of the insulator 2 is not further limited here, and can be adjusted accordingly according to the actual situation. In this embodiment, the insulator 2 can be a ceramic body, a glass body or a bakelite body.

[0033] In some embodiments, electrical connection is achieved between the terminal 7 and the conductive liquid 3, so that the liquid cable can conduct electricity after being connected to the conductive circuit. Therefore, in order to improve the conductive efficiency and service life of the liquid cable, a metal material with good conductivity and good corrosion resistance is usually selected. For example, the terminal 7 is a copper terminal, an aluminum terminal or a silver terminal. In this embodiment, the material suitable for the terminal 7 only needs to meet the above conditions and is not further limited here.

[0034] In some embodiments, a connecting hole 8 is provided at one end of the terminal block 7; the other end of the terminal block 7 extends into the elastic sealing tube 1 and is sealed and connected to the elastic sealing tube 1; wherein, in order to facilitate and quickly realize the installation of the liquid cable and achieve the purpose of efficient power transmission, terminal blocks 7 are provided at both ends of the liquid cable, and the liquid cable is fixedly connected to the pole tower crossarm or other conductor through the connecting hole 8, and as the length of the elastic sealing tube 1 increases, the distance between the pole towers increases, and the transmitted power increases, the strength of the terminal block 7 and the diameter of the connecting hole 8 are adjusted accordingly to meet different needs, and the adjustment of the strength and diameter size is not further limited here.

[0035] In some embodiments, one or more liquid filling ports are provided on the tube wall of the elastic sealing tube 1, and a liquid filling valve 5 is provided at the liquid filling port. Usually, a liquid filling port is correspondingly provided for each sub-tube cavity 4. In particular, the number of liquid filling ports can be adjusted according to the length and diameter of the elastic sealing tube 1 and the number of sub-tube cavities 4 to meet the requirement of quickly filling the conductive liquid 3.

[0036] In some embodiments, the elastic sealing tube 1 includes a sealing layer, an insulating layer and a protective layer which are arranged in sequence from the inside to the outside. The sealing layer can effectively prevent the leakage of the conductive liquid 3, the insulating layer can effectively avoid the leakage phenomenon, and the protective layer can effectively prevent the damage to the liquid cable from the outside during transportation and daily working conditions, and bear the weight of the liquid cable. For this reason, the thickness of each layer can be adjusted to different degrees according to the specific working environment. For example, the thickness of the protective layer can be adjusted according to the changes in the length and diameter of the elastic sealing tube 1.

[0037] To further understand the working principle of the embodiment of the present invention, after the conductive liquid 3 is filled and the elastic sealing tube 1 is expanded, when the conductive liquid 3 leaks, how to quickly cut off the current and ensure a safe working environment is briefly described here.

[0038] When the conductive liquid 3 leaks from the elastic sealing tube 1, the elastic sealing tube 1 gradually shrinks until its inner wall is tightly fitted with the outer surface of the insulator 2. At this time, the gap between the inner wall of the elastic sealing tube 1 and the insulator 2 no longer exists. Figure 2 The insulator 2 cuts off the liquid conduction path between adjacent sub-cavities 4, thereby cutting off the conductive path of the liquid cable, thereby avoiding safety hazards caused by leakage. The conductive liquid 3 in the sub-cavity 4 no longer continues to flow out, which can reduce the leakage of the conductive liquid 3, reduce maintenance costs, and protect the environment.

[0039] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A liquid cable, characterized in that: include: An elastic sealing tube, wherein a connection terminal is provided at the end of the elastic sealing tube; A plurality of insulators, wherein the plurality of insulators are sequentially arranged in the lumen of the elastic sealing tube at intervals, and divide the lumen of the elastic sealing tube into a plurality of sub-lumens; Conductive liquid, the conductive liquid fills and expands the elastic sealing tube to form a gap between the inner wall of the elastic sealing tube and the insulator, and connects the adjacent sub-lumens; in the event of leakage of the elastic sealing tube, the elastic sealing tube contracts and fits with the insulator to cut off the adjacent sub-lumens; A limiting portion for limiting the movement of the insulator along the length direction of the elastic sealing tube is provided between adjacent sub-tube cavities; The limiting portion comprises a valve cavity which is arranged between adjacent sub-cavities and has a shape matching that of the insulator, and the insulator is arranged in the valve cavity; The diameter of the valve cavity is larger than the diameter of the sub-lumen, and the diameter of the insulator is larger than the diameter of the sub-lumen when expanded; The insulator is a ceramic body, a glass body or a bakelite body.

2. The liquid cable according to claim 1, characterized in that: The insulator is a spherical insulator.

3. The liquid cable according to claim 1, characterized in that: The wiring terminal is a copper wiring terminal, an aluminum wiring terminal or a silver wiring terminal.

4. The liquid cable according to claim 1, characterized in that One end of the wiring terminal is provided with a connection hole, and the other end of the wiring terminal extends into the elastic sealing tube and is sealed and connected with the elastic sealing tube.

5. The liquid cable according to claim 1, characterized in that: One or more liquid adding ports are arranged on the tube wall of the elastic sealing tube, and a liquid adding valve is arranged at the liquid adding port.

6. The liquid cable according to claim 1, characterized in that: The elastic sealing tube comprises a sealing layer, an insulating layer and a protective layer which are arranged in sequence from the inside to the outside.

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