Cable terminal with insulating sheath

Abstract

The utility model relates to the technical field of cable terminal heads, in particular to a cable terminal head with an insulating sheath, which comprises a cable terminal head body, a detachable insulating sheath is arranged outside the cable terminal head body, one side of the insulating sheath is provided with an embedded groove, the other side of the insulating sheath is provided with a clamping block, and the clamping block is connected with the embedded groove. The clamping block is connected with the embedded groove in a clamping mode, and a notch is formed in the insulation sleeve. The cable terminal head is provided with the insulation sleeve, comprehensive insulation protection is provided for the cable terminal head through the design of a multi-layer insulation structure in the insulation sleeve, current leakage is effectively prevented, risks of electric leakage, short circuit and other electrical faults caused by poor insulation performance are reduced, and the insulation sleeve can be firmly fixed on the cable terminal head body. The connection tightness and stability between the insulation sleeve and the cable terminal head body are ensured, the insulation structure is ensured not to be damaged by external force, and the long-term effectiveness of the insulation performance is further ensured.

Description

Technical Field

[0001] This utility model relates to the field of cable termination technology, and in particular to a cable termination with an insulating sheath. Background Technology

[0002] In power systems, cables are crucial carriers of electrical energy, and cable terminals, as key components connecting cable lines to electrical equipment, play a vital role. Cable terminals connect the cable cores to various electrical devices (such as transformers, switchgear, and motors), enabling the safe and reliable transmission of electrical energy from the cable to the electrical equipment, or vice versa. They are widely used in power transmission and distribution systems, including urban power grids, industrial power supply systems, substations, power plants, and electrical systems in various buildings. Whether laying underground or overhead cables, cable terminals are indispensable.

[0003] In existing technologies, the insulation structure of many cable terminations is simple, usually using only a single insulating material to achieve insulation performance. However, in complex electric field environments and harsh external environments, the insulation performance is prone to deterioration. Furthermore, the insulating material is not convenient for cable termination installation, requiring a lot of time and effort. Once the installation is deviated, adjustment and reinstallation are very difficult, reducing installation efficiency. Utility Model Content

[0004] The purpose of this invention is to solve the problems of poor insulation performance and inconvenience in installing insulating materials in existing cable terminations, and to propose a cable termination with an insulating sheath.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cable termination with an insulating sheath includes a cable termination body, a removable insulating sheath installed on the outside of the cable termination body, an inner groove on one side of the insulating sheath, a locking block installed on the other side of the insulating sheath, the locking block engaging with the inner groove, and a notch on the insulating sheath.

[0007] Also includes:

[0008] Fasteners that facilitate the secure installation of the insulating sleeve.

[0009] Preferably, the insulating sleeve consists of an outer protective layer, an intermediate shielding layer, and an inner insulating layer.

[0010] Preferably, the fastener comprises:

[0011] A groove, wherein the groove is formed within the card block;

[0012] a spring fixed in the inner surface of the groove;

[0013] a protruding block fixed at the other end of the spring;

[0014] pin holes opened on the sidewalls of the protruding block;

[0015] fixed blocks symmetrically fixed on the insulating sleeve;

[0016] pins threadedly connected on the fixed blocks.

[0017] Preferably, the protruding block is clamped with the notch.

[0018] Preferably, the pins are threadedly connected with the pin holes.

[0019] Preferably, the sidewall of the protruding block is provided in a beveled shape, and the inner-embedded groove is provided in a matching beveled shape at the clamping position with the protruding block.

[0020] Compared with the prior art, the utility model has the following advantages:

[0021] 1. The utility model utilizes the cooperation of the clamping block, the inner-embedded groove, the protruding block, the spring and the pin to realize reliable fastening, so that the insulating sleeve is firmly fixed on the cable terminal head body. Even if there are unfavorable factors such as vibration and pulling of the external environment, the insulating sleeve will not easily loosen or displace, ensuring the tightness and stability of the connection between the insulating sleeve and the cable terminal head body, ensuring that the insulating structure will not be damaged by external force, and further ensuring the long-term effectiveness of the insulating performance. The structural reliability of the entire cable terminal head is improved, and the risk of electrical performance decline caused by structural looseness is reduced.

[0022] 2. The utility model sets the insulating sleeve, which provides comprehensive insulation protection for the cable terminal head through the design of the multi-layer insulating structure in the insulating sleeve, effectively prevents current leakage, reduces the risk of electrical faults such as electric shock and short circuit caused by poor insulating performance, improves the insulating reliability of the cable terminal head under different voltage levels, and is especially suitable for high-voltage and high-current power transmission environment, ensuring the stable operation of the power system. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 a whole structure schematic diagram of a cable terminal head with an insulating sheath according to the utility model;

[0024] Figure 2 a structure schematic diagram of an insulating sleeve of a cable terminal head with an insulating sheath according to the utility model;

[0025] Figure 3The utility model provides an insulating sleeve profile structure schematic diagram of cable terminal head with insulating sheath.

[0026] Figure 4 The utility model provides an insulating sleeve profile structure schematic diagram of cable terminal head with insulating sheath.

[0027] Figure 5 The utility model provides an insulating sleeve composition structure schematic diagram of cable terminal head with insulating sheath.

[0028] In the drawing,

[0029] 1, cable terminal head body;2, insulating sleeve;21, outer protective layer;22, intermediate shielding layer;23, inner insulating layer;3, inlay groove;4, clamping block;5, recess;51, groove;52, spring;53, protruding block;54, pin hole;55, fixed block;56, pin. Specific implementation

[0030] The utility model embodiments will be clearly and completely described below in combination with the drawings in the utility model embodiments, and obviously, the described embodiments are only part of the utility model embodiments, not all the embodiments.

[0031] Referring to Figures 1-5 A kind of cable terminal head with insulating sheath, including cable terminal head body 1, detachable insulating sleeve 2 is installed to the outside of cable terminal head body 1, and inlay groove 3 is set in one side of insulating sleeve 2, clamping block 4 is installed to the other side of insulating sleeve 2, clamping block 4 is connected with inlay groove 3, recess 5 is set in insulating sleeve 2.

[0032] A kind of cable terminal head with insulating sheath also includes fastener, and fastener is convenient for the fastening installation of insulating sleeve 2.

[0033] Insulating sleeve 2 is composed of outer protective layer 21, intermediate shielding layer 22 and inner insulating layer 23.

[0034] It needs to be explained that outer protective layer 21 uses high molecular material with high weather resistance, chemical corrosion resistance and impact resistance, such as polyvinyl chloride (PVC) or polyurethane (PU), to provide the first protection for cable terminal head, effectively resist the erosion of environmental factors, such as ultraviolet, rain, dust, chemicals and physical impact on cable terminal head;

[0035] Intermediate shielding layer 22 uses metal shielding material, for example, copper foil or aluminum foil, and is tightly attached to the outside of inner insulating layer 23, and its main role is to evenly distribute electric field, prevent local electric field from being too high to cause insulation breakdown, and shield external electromagnetic interference, ensure the stability and accuracy of electrical signals inside cable terminal head;

[0036] The inner insulation layer 23 uses high dielectric strength insulation material, such as cross-linked polyethylene (XLPE), which can effectively prevent current leakage and ensure the insulation performance of the cable terminal head.

[0037] The fastener comprises a recess 51, a spring 52, a protrusion 53, a pin hole 54, a fixing block 55 and a pin 56, the recess 51 is arranged in the clamping block 4, the spring 52 is fixed on the inner surface of the recess 51, the protrusion 53 is fixed on the other end of the spring 52, the protrusion 53 is clamped with the notch 5, the pin hole 54 is arranged on the sidewall of the protrusion 53, the fixing block 55 is symmetrically fixed on the insulating sleeve 2, and the pin 56 is threadedly connected on the fixing block 55 and is threadedly connected with the pin hole 54.

[0038] The sidewall of the protrusion 53 is arranged in a bevel shape, and the clamping position of the inner embedding groove 3 and the protrusion 53 is arranged in a matching bevel shape. The bevel-shaped design can make the clamping block 4 and the inner embedding groove 3 realize the clamping function while occupying less space. Compared with other clamping structures, such as right-angle shape or square shape, the bevel-shaped structure is more compact, so that the structure of the whole cable terminal head is more compact, avoiding the problem that the volume of the cable terminal head is too large due to the clamping structure, which is beneficial to use in the installation environment with limited space, and also makes the appearance of the whole cable terminal head more simple and beautiful.

[0039] The utility model can be described by the following operation mode:

[0040] First, the insulating sleeve 2 is sleeved and installed on the cable terminal head body 1, then one end of the insulating sleeve 2 with the clamping block 4 is pulled and clamped into the inner embedding groove 3 on the other side of the insulating sleeve 2, then it is pushed forward, with the pushing of the insulating sleeve 2, the bevel of the inner embedding groove 3 will extrude the bevel of the protrusion 53, the bevel extrusion will overcome the elastic force of the spring 52, and the protrusion 53 will retract into the recess 51, when the protrusion 53 moves to the position of the notch 5 on the insulating sleeve 2, under the action of the elastic force of the spring 52, the protrusion 53 pops out and is clamped with the notch 5, at this time, the insulating sleeve 2 is preliminarily positioned on the cable terminal head body 1, then the pin 56 is screwed into the pin hole 54 of the protrusion 53 to lock, and then the protrusion 53 is firmly fixed in the notch 5, so that the connection between the insulating sleeve 2 and the cable terminal head body 1 is more compact, preventing the insulating sleeve 2 from loosening or shifting due to external vibration, pulling and other factors, ensuring that the insulating sleeve 2 stably wraps the outside of the cable terminal head body 1, and then completing the installation between the insulating sleeve 2 and the cable terminal head body 1, so as to improve the insulation performance.

[0041] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A cable termination having an insulating sheath, comprising a cable termination body (1), characterised in that, The outer part of the cable terminal head body (1) is mounted with a detachable insulation sleeve (2), one side of the insulation sleeve (2) is provided with an embedded groove (3), the other side of the insulation sleeve (2) is mounted with a clamping block (4), the clamping block (4) is clamped with the embedded groove (3), the insulation sleeve (2) is provided with a notch (5); Further comprising: A fastener is used to fasten the insulation sleeve (2).

2. A cable termination having an insulating sheath according to claim 1, characterised in that, The insulation sleeve (2) is composed of an outer protective layer (21), a middle shielding layer (22) and an inner insulation layer (23).

3. A cable termination having an insulating sheath according to claim 1, characterised in that, The fastener includes: A groove (51) is arranged in the clamping block (4); A spring (52) is fixed to the inner surface of the groove (51); A protruding block (53) is fixed to the other end of the spring (52); Pin holes (54) are arranged on the side walls of the protruding block (53); Fixed blocks (55) are symmetrically fixed to the insulation sleeve (2); Pin nails (56) are threadedly connected to the fixed blocks (55).

4. A cable termination having an insulating sheath according to claim 3, characterised in that, The protruding block (53) is clamped with the notch (5).

5. A cable termination having an insulating sheath according to claim 3, characterised in that, The pin nails (56) are threadedly connected with the pin holes (54).

6. A cable termination having an insulating sheath according to claim 5, characterised in that, The side wall of the protruding block (53) is provided in a beveled shape, and the clamping part of the embedded groove (3) and the protruding block (53) is provided in a matching beveled shape.

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