Protective device for ring main unit

Abstract

The utility model relates to the technical field of ring main units, in particular to a protection device for a ring main unit. The adjusting component is a rectangular container with an opening in the upper end; the adjusting component is inserted into the connecting assembly; a circular through hole is formed in the bottom of the adjusting component; a threaded hole is formed in the center of the inner supporting component; supporting steps are arranged at the upper parts of the inner supporting components; the heights of the supporting steps are sequentially increased from the center to the edge; the cable support comprises a supporting table and supporting legs. A cable lock hole is formed in the supporting table; an adjusting hole is formed in the supporting table; the adjusting holes are distributed at intervals along the radial direction of the cable lock hole; the supporting legs are locked on the adjusting holes; the outer supporting component comprises a platform part and a protruding part. The lug boss is fixedly arranged on the platform part and is coaxial with the platform part; an external thread is arranged on the outer wall of the lug boss; the protruding part is connected with the inner supporting component through threads. According to the utility model, the cable terminal exceeding the ring main unit can be protected, and the operation safety of the ring main unit is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of ring main unit technology, and in particular to a protective device for ring main units. Background Technology

[0002] With rapid urban development, land resources available for the construction of substations and power distribution facilities are becoming increasingly limited. Ring main units (RNBs) are gradually becoming smaller; these smaller RNBs can reduce manufacturing costs and transportation and installation expenses while ensuring power transmission efficiency and service quality; they also reduce floor space requirements and land acquisition or leasing costs; and through flexible deployment, they can effectively utilize valuable urban space, improving the flexibility of urban power grid planning and layout.

[0003] However, many existing miniaturized ring main units are generally shorter, resulting in the cable outlet positions inside the ring main unit being too low. During installation, the joints of high-voltage cables can easily extend into the outlet holes or even beyond the ring main unit, posing a significant safety hazard. Utility Model Content

[0004] In view of this, the present invention provides a protective device for ring main unit, the main purpose of which is to protect the cable terminals that extend beyond the ring main unit and ensure the safety of the ring main unit operation.

[0005] To achieve the above objectives, this utility model mainly provides the following technical solutions:

[0006] An embodiment of this utility model provides a protective device for a ring main unit, comprising: a connecting component, an adjusting component, an inner support component, a cable bracket, and an outer support component;

[0007] The connection component includes: a connection part and an adjustment part;

[0008] The connecting part is a rectangular ring-shaped plate structure; the connecting part is provided with connecting holes;

[0009] The adjustment unit includes: an inner tube and an outer tube;

[0010] The inner tube is a rectangular tubular structure; the top of the inner tube is fixedly disposed on the connecting part;

[0011] The outer tube is a rectangular tubular structure; the top of the outer tube is fixedly disposed on the connecting part; the outer tube is sleeved on the outside of the inner tube; there is a gap of a predetermined width between the outer tube and the inner tube.

[0012] The adjusting member is a rectangular container with an open top; the adjusting member can be inserted into the gap between the outer tube and the inner tube and slide up and down relative to the adjusting part;

[0013] A locking member is provided between the adjusting member and the adjusting part to limit the relative position of the adjusting member and the adjusting part;

[0014] The bottom of the adjusting component has a circular through hole;

[0015] The inner support member has a threaded hole at its center; the inner support member also has a cable hole at its center; the cable hole is located above the threaded hole and is coaxially distributed with the threaded hole; the diameter of the cable hole is smaller than that of the threaded hole; the connection between the threaded hole and the cable hole is a circular arc surface; the diameter of the circular arc surface gradually decreases from the threaded hole to the cable hole.

[0016] The upper part of the inner support member has a support step; the height of the support step increases from the center to the edge; the inner support member is fixedly set at the bottom of the adjusting member by fasteners and is coaxially distributed with the circular through hole; a sealing ring is provided between the inner support member and the adjusting member;

[0017] The cable bracket includes: a support platform and legs;

[0018] The support platform is provided with cable locking holes for cables to pass through; the support platform is provided with adjustment holes; there are multiple adjustment holes; the adjustment holes are distributed radially at intervals along the cable locking holes;

[0019] The support legs are fastened to the adjustment holes of the support platform by fasteners; there are multiple support legs; the multiple support legs are arranged in an array with the cable locking hole as the center;

[0020] The external support component includes: a platform portion and a protrusion portion;

[0021] The platform section has a circular ring structure;

[0022] The protrusion is a cylindrical structure; the protrusion is fixedly disposed on the platform and coaxially disposed with the platform; the outer wall of the protrusion has external threads; the protrusion is inserted into the inner support member and is connected to the inner support member by threads;

[0023] A sealing ring 2 is provided between the platform section and the adjusting component.

[0024] Furthermore, the inner support component is manufactured from a single piece of molded plastic.

[0025] Furthermore, the external support component is manufactured from a single piece of molded plastic.

[0026] Furthermore, the support leg is a fan-shaped cylindrical structure.

[0027] Furthermore, the platform portion and the protrusion portion are integrally formed.

[0028] By employing the above technical solution, the protective device for ring main units of this utility model has at least the following advantages:

[0029] It can protect cable terminals that extend beyond the ring main unit, ensuring the safety of ring main unit operation.

[0030] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0031] Figure 1 A schematic diagram of a protective device for a ring main unit provided in an embodiment of this utility model;

[0032] Figure 2 A schematic diagram of an internal support component in a protective device for a ring main unit, provided for an embodiment of this utility model;

[0033] Figure 3 A top view of the support legs in a protective device for a ring main unit provided in this embodiment of the present invention.

[0034] Figure 4 This is a schematic diagram of a protective device for a ring main unit and the installation position of the ring main unit, provided for an embodiment of this utility model.

[0035] As shown in the figure:

[0036] 1 is the connecting part, 2 is the adjusting part, 2-1 is the inner tube, 2-2 is the outer tube, 3 is the adjusting component, 4 is the support platform, 5 is the inner support component, 5-1 is the support step, 5-2 is the threaded hole, 5-3 is the cable hole, 6 is the support leg, 7 is the outer support component, 7-1 is the platform part, 7-2 is the protrusion part, 8 is the sealing ring one, 9 is the sealing ring two, and 10 is the cable terminal. Detailed Implementation

[0037] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the specific implementation methods, structures, features, and effects according to this utility model application are described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0038] like Figures 1 to 4As shown in the figure, an embodiment of this utility model provides a protective device for a ring main unit, comprising: a connecting assembly, an adjusting component 3, an inner support component 5, a cable bracket, and an outer support component 7; the connecting assembly includes: a connecting part 1 and an adjusting part 2; the connecting part 1 is a rectangular ring-shaped plate structure; the connecting part 1 is provided with a connecting hole; it can be bolted to the outlet of an existing ring main unit. The adjusting part 2 includes: an inner tube 2-1 and an outer tube 2-2; the inner tube 2-1 is a rectangular tubular structure; the top of the inner tube 2-1 is fixedly mounted on the connecting part 1, and can be optionally welded; the outer tube 2-2 is a rectangular tubular structure; the top of the outer tube 2-2 is fixedly mounted on the connecting part 1, and can be optionally welded; the outer tube 2-2 is sleeved on the outside of the inner tube 2-1; there is a predetermined width gap between the outer tube 2-2 and the inner tube 2-1 for the insertion of the adjusting component 3.

[0039] The adjusting member 3 is a rectangular container with an open top. It can be inserted into the gap between the outer tube 2-2 and the inner tube 2-1, and slides up and down relative to the adjusting part 2. A locking member is provided between the adjusting member 3 and the adjusting part 2 to limit their relative positions. The adjusting member 3 can be fixed in different positions on the adjusting part 2 as needed. The bottom of the adjusting member 3 has a circular through hole for cable passage.

[0040] The inner support member 5 has a threaded hole 5-2 at its center for connection with the outer support member 7; the inner support member 5 has a cable hole 5-3 at its center for cable passage; the cable hole 5-3 is located above the threaded hole 5-2 and is coaxially distributed with the threaded hole 5-2; the diameter of the cable hole 5-3 is smaller than that of the threaded hole 5-2; the transition from the threaded hole 5-2 to the cable hole 5-3 is through an arc surface; the diameter of the arc surface gradually decreases from the threaded hole 5-2 to the cable hole 5-3.

[0041] The upper part of the inner support member 5 has a support step 5-1; the height of the support step 5-1 increases gradually from the center to the edge; the support step 5-1 is annular in shape; the inner support member 5 is fixedly mounted on the bottom of the adjusting member 3 by fasteners and is coaxially distributed with the circular through hole; preferably, the inner support member 5 is made of a one-piece molded plastic component, which can provide insulation and is low in cost. A sealing ring 8 is provided between the inner support member 5 and the adjusting member 3 to ensure the sealing of the circular through hole at the bottom of the adjusting member 3. The cable support includes a support platform 4 and legs 6. The support platform 4 has cable locking holes for cable passage and to provide support. The support platform 4 also has multiple adjustment holes, spaced radially along the cable locking holes. The legs 6 are fastened to the adjustment holes on the support platform 4 using fasteners. These multiple legs are arranged in an array around the cable locking holes. The legs 6 can be fixed to the adjustment holes as needed, allowing for changes in the relative distance between the support platform 4 and the inner support component 5, thus adapting to the needs of different connected cables. In actual operation, some cable connectors may extend more out of the ring main unit than others, allowing for adjustment and selection as required. Preferably, the legs 6 are fan-shaped cylindrical structures to match the circular support steps 5-1, forming a support.

[0042] The outer support member 7 includes a platform portion 7-1 and a protrusion 7-2; the platform portion 7-1 has an annular structure; the protrusion 7-2 has a cylindrical structure; the protrusion 7-2 is fixedly mounted on the platform portion 7-1 and coaxially arranged with it; the outer wall of the protrusion 7-2 has external threads; the protrusion 7-2 is inserted into the inner support member 5 and connected to the inner support member 5 by threads; preferably, the outer support member 7 is made of a one-piece molded plastic component. Preferably, the platform portion 7-1 and the protrusion 7-2 are integrally formed, ensuring a reliable structure. A sealing ring 9 is provided between the platform portion 7-1 and the adjusting member 3 to achieve external sealing of the circular through hole at the bottom of the adjusting member 3.

[0043] An embodiment of this utility model provides a protective device for ring main units, which can protect the cable terminals 10 extending beyond the ring main unit, ensuring the safety of ring main unit operation; it can adapt to different extension lengths and can be adjusted as needed; and it has low manufacturing cost and can be widely used.

[0044] To further clarify, while the terms "first," "second," etc., may be used herein to describe various elements, these terms should not limit the elements. These terms are used only to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element; these terms are used only to distinguish one element from another. This does not depart from the scope of the exemplary embodiments. Similarly, "element one," "element two," and so on do not represent the order of elements; these terms are used only to distinguish one element from another. As used herein, the term "and / or" includes any and all combinations of one or more associated listed items.

[0045] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0047] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A protective device for a ring main unit, characterized in that, Includes: connecting components, adjusting components, internal support components, cable brackets, and external support components; The connection component includes: a connection part and an adjustment part; The connecting part is a rectangular ring-shaped plate structure; the connecting part is provided with connecting holes; The adjustment unit includes: an inner tube and an outer tube; The inner tube is a rectangular tubular structure; the top of the inner tube is fixedly disposed on the connecting part; The outer tube is a rectangular tubular structure; the top of the outer tube is fixedly disposed on the connecting part; the outer tube is sleeved on the outside of the inner tube; there is a gap of a predetermined width between the outer tube and the inner tube. The adjusting member is a rectangular container with an open top; the adjusting member can be inserted into the gap between the outer tube and the inner tube and slide up and down relative to the adjusting part; A locking member is provided between the adjusting member and the adjusting part to limit the relative position of the adjusting member and the adjusting part; The bottom of the adjusting component has a circular through hole; The inner support member has a threaded hole at its center; the inner support member also has a cable hole at its center; the cable hole is located above the threaded hole and is coaxially distributed with the threaded hole; the diameter of the cable hole is smaller than that of the threaded hole; the connection between the threaded hole and the cable hole is a circular arc surface; the diameter of the circular arc surface gradually decreases from the threaded hole to the cable hole. The upper part of the inner support member has a support step; the height of the support step increases from the center to the edge; the inner support member is fixedly set at the bottom of the adjusting member by fasteners and is coaxially distributed with the circular through hole; a sealing ring is provided between the inner support member and the adjusting member; The cable bracket includes: a support platform and legs; The support platform is provided with cable locking holes for cables to pass through; the support platform is provided with adjustment holes; there are multiple adjustment holes; the adjustment holes are distributed radially at intervals along the cable locking holes; The support legs are fastened to the adjustment holes of the support platform by fasteners; there are multiple support legs; the multiple support legs are arranged in an array with the cable locking hole as the center; The external support component includes: a platform portion and a protrusion portion; The platform section has a circular ring structure; The protrusion is a cylindrical structure; the protrusion is fixedly disposed on the platform and coaxially disposed with the platform; the outer wall of the protrusion has external threads; the protrusion is inserted into the inner support member and is connected to the inner support member by threads; A sealing ring 2 is provided between the platform section and the adjusting component.

2. The protective device for ring main units according to claim 1, characterized in that, The internal support component is manufactured from a single piece of molded plastic.

3. The protective device for ring main units according to claim 1, characterized in that, The external support component is manufactured from a single piece of molded plastic.

4. The protective device for ring main units according to claim 1, characterized in that, The support leg is a fan-shaped cylindrical structure.

5. The protective device for a ring main unit according to claim 1, characterized in that, The platform portion and the protrusion portion are integrated into one unit.

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