Rigid dry-type outdoor terminal

Abstract

The utility model belongs to the technical field of cables, and particularly relates to a rigid dry-type outdoor terminal, which comprises a cable terminal joint and a cable, and is characterized in that the cable terminal joint comprises an insulating rubber main body and an insulating tube arranged on the inner wall of the insulating rubber main body; and the cable passes through the inner wall of the insulating rubber main body and is electrically connected with an equipment terminal. Due to the rigidity characteristic of the cable terminal connector, vector force is mainly concentrated in the axial direction of the cable when the cable terminal connector is installed on the cable, and therefore installation is easier.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, and in particular relates to a rigid dry-type outdoor terminal. Background Art

[0002] Cable terminal connectors are used to connect cables and equipment terminals. Conventional cable terminal connectors are made of rubber, which is relatively soft and has an interference fit with the cable. In the case of relatively high voltage levels of cable systems, such as 66kV and above systems, the length of the product is not less than 1m.

[0003] 1. The cable terminal connector is pushed onto the cable, requiring the semi-conductive rubber body to overlap with the cable semi-conductive body. Due to the elasticity of the rubber and the bending of the cable itself, there is non-axial resistance in the pushing force, so it is relatively difficult to install.

[0004] 2. Based on 1, the cable terminal joint is prone to stress shrinkage, which may cause the semi-conductive rubber body to separate from the cable semiconductor, bringing the risk of product failure.

[0005] 3. Since the cable terminal connector is bent, the electrical sliding distance of the product is reduced, which can easily cause electrical accidents.

[0006] 4. As the product is relatively long and installed outdoors, it is affected by the accelerated gravity caused by the swaying caused by external factors such as wind and earthquake, causing the cable to be subjected to a large breaking tensile force, which reduces the life of the cable and the stability of the connection point between the cable conductor and the equipment terminal. Utility Model Content

[0007] In order to solve the above technical problems, the utility model provides a rigid dry outdoor terminal, including a cable terminal joint and a cable, wherein the cable terminal joint includes an insulating rubber body and an insulating tube arranged on the inner wall of the insulating rubber body, and the cable passes through the inner wall of the insulating rubber body to be electrically connected to the equipment terminal.

[0008] Furthermore, the insulating tube is made of a rigid insulating material.

[0009] Furthermore, a plurality of reinforcing holes are provided on the side wall of the insulating tube so as to be suitable for bonding with the insulating rubber body.

[0010] Furthermore, the reinforcement holes are arranged at intervals in the height direction of the insulation tube and are evenly arranged.

[0011] Further, the cable comprises a cable conductor, a cable insulation arranged outside the cable conductor, a cable semi-conductor arranged outside the cable insulation, and a cable sheath arranged outside the cable semi-conductor, wherein:

[0012] The size of the cable semiconductor is consistent with the size of the cable insulation;

[0013] The diameter of the cable sheath is greater than the diameter of the cable semiconductor.

[0014] Furthermore, a semi-conductive rubber body is provided at one end of the inner wall of the insulating rubber body, and the semi-conductive rubber body is semi-conductively overlapped with the cable.

[0015] Furthermore, a gap is provided between the semi-conductive rubber body and the insulating tube.

[0016] Furthermore, the inner wall of the insulating rubber body includes a first tube wall, a second tube wall, a third tube wall and a fourth tube wall in sequence, wherein:

[0017] The insulating tube is fixedly arranged on the first tube wall;

[0018] The diameter of the second tube wall is adapted to the diameter of the cable insulation;

[0019] The diameter of the third tube wall is adapted to the diameter of the cable semiconductor;

[0020] The diameter of the fourth tube wall is greater than the diameter of the cable sheath.

[0021] Furthermore, the cable conductor is arranged to extend out of the insulating rubber body.

[0022] The beneficial effects of the utility model are:

[0023] 1. Insulation tube is a kind of insulating material with rigid characteristics, suitable for high voltage cable system, such as resin, glass fiber, ceramic, etc.

[0024] 2. The insulating tube is located inside the insulating rubber body, isolating it from external acid, alkali and water vapor corrosion, and its electrical properties are not affected.

[0025] 3. The insulating tube is provided with enhanced holes to facilitate adhesion with the insulating rubber body.

[0026] 4. Due to its rigidity, the vector force of the cable terminal joint when installed on the cable is mainly concentrated in the axial direction of the cable, so it is easier to install.

[0027] 5. Due to its rigidity, the cable terminal connector can stand vertically in the outdoor environment during operation and will not be affected by the accelerated gravity caused by swaying caused by external factors such as wind and earthquake.

[0028] 6. Due to its rigidity and vertical characteristics during operation, the cable terminal connector reduces the risk of electrical flashover. Therefore, its structure can be shorter than the original solution, which is beneficial to cost manufacturing.

[0029] 7. In an environment where the cable system is subject to thermal expansion and contraction, the rigidity of the insulating tube makes the clamping force between the insulating rubber and the cable insulation interface more reliable, reducing the risk of creepage between the cable terminal connector and the cable interface.

[0030] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by implementing the present invention.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a schematic diagram of a preferred embodiment of the cable terminal connector of the utility model;

[0034] Figure 2 It is a schematic diagram of a preferred embodiment of the insulating tube of the utility model;

[0035] Figure 3 It is a schematic diagram of a preferred embodiment of the cable of the utility model;

[0036] Figure 4 The utility model is a schematic diagram of the cable terminal connector installation structure.

[0037] In the figure:

[0038] 1. Cable terminal connector, 101. Insulating rubber body, 102. Insulating tube, 103. Reinforcement hole, 104. Semi-conductive rubber body, 105. First tube wall, 106. Second tube wall, 107. Third tube wall, 108. Fourth tube wall;

[0039] 2. Cable, 201. Cable conductor, 202. Cable insulation, 203. Cable semiconductor, 204. Cable sheath. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] Embodiment 1, as Figure 1 As shown, the rigid dry-type outdoor terminal of this embodiment includes a cable terminal connector 1 and a cable 2. The cable terminal connector 1 includes an insulating rubber body 101 and an insulating tube 102 arranged on the inner wall of the insulating rubber body 101. The cable passes through the inner wall of the insulating rubber body 101 and is electrically connected to the equipment terminal. The outer wall of the insulating rubber body 101 is provided with an umbrella skirt to increase the creepage distance. Here, the material of the insulating tube 102 is a rigid insulating material suitable for high-voltage cable systems, such as resin, glass fiber, ceramic, etc. Due to the setting of the insulating tube 102, the cable terminal connector 1 has rigidity, so that it can stand vertically in the outdoor environment during operation, and will not be affected by the accelerated gravity caused by swaying caused by external factors such as wind and earthquake. Due to its vertical characteristics, the risk of electrical sliding is reduced, so that the cable terminal can be made shorter and reduce costs.

[0042] In an environment where the cable system is subject to thermal expansion and contraction, the rigidity of the insulating tube 102 makes the clamping force at the interface between the insulating rubber and the cable insulation 202 more reliable, thereby reducing the risk of creepage at the interface between the cable terminal connector 1 and the cable.

[0043] The side wall of the insulating tube 102 is provided with a plurality of reinforcing holes 103 to be suitable for bonding with the insulating rubber body 101. The reinforcing holes 103 are arranged at intervals in the height direction of the insulating tube 102 and are evenly arranged. The reinforcing holes 103 increase the adhesion with the inner wall of the insulating rubber body 101.

[0044] The cable 2 includes a cable conductor 201, a cable insulation 202 arranged outside the cable conductor 201, a cable semi-conductor 203 arranged outside the cable insulation 202, and a cable sheath 204 arranged outside the cable semi-conductor 203, wherein the size of the cable semi-conductor 203 is consistent with the size of the cable insulation 202; the diameter of the cable sheath 204 is larger than the diameter of the cable semi-conductor 203.

[0045] A semi-conductive rubber body 104 is provided at one end of the inner wall of the insulating rubber body 101, and the semi-conductive rubber body 104 overlaps the cable semi-conductor 203. The cable terminal connector 1 is pushed onto the cable, which requires the semi-conductive rubber body 104 to overlap the cable semi-conductor 203. Due to the elasticity of the rubber and the bending of the cable itself, there is non-axial resistance to the pushing force, so it is relatively difficult to install. Now the insulating tube 102 is fixed on the inner wall of the insulating rubber body 101. Due to its rigidity, the vector force when installed on the cable is mainly concentrated in the axial direction of the cable, so it is easier to install.

[0046] A gap is provided between the semi-conductive rubber body 104 and the insulating tube 102 .

[0047] The inner wall of the insulating rubber body 101 includes a first tube wall 105, a second tube wall 106, a third tube wall 107 and a fourth tube wall 108 in sequence, wherein the insulating tube 102 is fixedly arranged on the first tube wall 105; the diameter of the second tube wall 106 is adapted to the diameter of the cable insulation 202; the diameter of the third tube wall 107 is adapted to the diameter of the cable semiconductor 203; and the diameter of the fourth tube wall 108 is greater than the diameter of the cable sheath 204.

[0048] In order to connect the cable conductor 201 to the equipment terminal, the cable conductor 201 is extended out of the insulating rubber body 101 .

[0049] All devices (parts without specific structure) selected in this application are universal standard parts or parts known to those skilled in the art, and their structures and principles can be known by those skilled in the art through technical manuals or conventional experimental methods. In addition, the software programs involved in this application are all prior art, and this application does not involve any improvement to the software programs.

[0050] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0052] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0053] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0054] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0055] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A rigid dry outdoor terminal, characterized in that: include: A cable terminal connector and a cable, wherein the cable terminal connector comprises an insulating rubber body and an insulating tube arranged on the inner wall of the insulating rubber body, and the cable passes through the inner wall of the insulating rubber body to be electrically connected to a device terminal.

2. The rigid dry outdoor terminal according to claim 1, characterized in that: The insulating tube is made of rigid insulating material.

3. The rigid dry outdoor terminal according to claim 2, characterized in that: The side wall of the insulating tube is provided with a plurality of reinforcing holes so as to be suitable for bonding with the insulating rubber body.

4. The rigid dry outdoor terminal according to claim 3, characterized in that: The reinforcement holes are arranged at intervals in the height direction of the insulation tube and are evenly arranged.

5. The rigid dry outdoor terminal according to claim 1, characterized in that: The cable comprises a cable conductor, a cable insulation arranged outside the cable conductor, a cable semi-conductor arranged outside the cable insulation, and a cable sheath arranged outside the cable semi-conductor, wherein: The size of the cable semiconductor is consistent with the size of the cable insulation; The diameter of the cable sheath is greater than the diameter of the cable semiconductor.

6. The rigid dry outdoor terminal according to claim 5, characterized in that: A semi-conductive rubber body is arranged at one end of the inner wall of the insulating rubber body, and the semi-conductive rubber body is semi-conductively overlapped with the cable.

7. The rigid dry outdoor terminal according to claim 6, characterized in that: A gap is arranged between the semi-conductive rubber body and the insulating tube.

8. The rigid dry outdoor terminal according to claim 7, characterized in that: The inner wall of the insulating rubber body includes a first tube wall, a second tube wall, a third tube wall and a fourth tube wall in sequence, wherein: The insulating tube is fixedly arranged on the first tube wall; The diameter of the second tube wall is adapted to the diameter of the cable insulation; The diameter of the third tube wall is adapted to the diameter of the cable semiconductor; The diameter of the fourth tube wall is greater than the diameter of the cable sheath.

9. The rigid dry outdoor terminal according to claim 8, characterized in that: The cable conductor is arranged to extend out of the insulating rubber body.

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