Ring main unit with protection effect

Abstract

The utility model discloses a ring main unit with a protection effect, which comprises a cabinet body, the bottom of the cabinet body is provided with a wire passing hole, the wire passing hole is provided with a support member, an O-shaped sealing ring is arranged between the support member and the wire passing hole, and the O-shaped sealing ring is provided with a sealing ring. A plurality of detachable pressing connectors are evenly distributed on the supporting piece with a circle point as the axis at equal intervals, rubber sleeves are arranged in the pressing connectors, a hollow column is arranged at one end of each pressing connector, an inclined face is arranged at an inlet of the outer wall of each hollow column, and each hollow column is in threaded connection with a nut. The hollow column forms a force for clamping the rubber sleeve by tightening the nut, the rubber sleeve deforms and fills the gap between the cable and the rubber sleeve, and the supporting piece passes through the O-shaped sealing ring and is assisted by the design, so that the sealing performance is improved, moist air is prevented from entering the cabinet body, and the service life of the cabinet body is prolonged. And the product has the advantages of protection effect, prolonged service life and convenience in maintenance.

Description

TECHNICAL FIELD

[0001] The utility model relates to ring main unit technical field especially relates to a ring main unit with protection effect. BACKGROUND

[0002] The ring main unit is a group of power transmission and distribution electrical equipment installed in the metal or non-metal insulation cabinet or made into the assembled interval type ring network power supply unit, the core part adopts the load switch and the fuse, has simple structure, small size, low price, can improve the power supply parameter and the performance and the power supply safety advantage, it is widely used in the power distribution station and the box type substation of city residential area, high -rise building, large -scale public building, factory enterprise etc.

[0003] The existing ring main unit is in the open air for a long time, most of the cables enter the cabinet from the bottom of the cabinet, and are fixed by the pressing plate and the bolt, the humid air enters the cabinet from the gap of the cable, and gathers on the surface of the electrical elements in the cabinet or invades the inside of the electrical elements, reduces the service life of the electrical elements, and the electrical equipment is prone to failure or causes fire etc. Therefore, the applicant has made beneficial design, found a method to solve the above problems, and the technical scheme to be introduced below is generated in this background. SUMMARY

[0004] The utility model discloses a product with protection effect, prolongs the service life, and is convenient for overhauling to overcome the design deficiency of the background art.

[0005] To solve the above problems, the utility model adopts the following technical scheme.

[0006] A ring main unit with protection effect, including the cabinet, the bottom of the cabinet is equipped with the wire hole, the wire hole is equipped with the support piece, and the support piece is equipped with the O type sealing ring between the wire hole, the support piece is evenly distributed with a plurality of equal interval detachable compression joints with the round dot as the axis, the compression joint is equipped with the rubber sleeve in, one end of the compression joint is equipped with the hollow column, the outer wall entrance of the hollow column is equipped with the inclined plane, the hollow column is connected with the nut, the nut is equipped with the shrinkage part, and the inclined plane is abutted, so that the hollow column is contracted to the axis direction.

[0007] Preferably, the end surface of the wire hole is provided with a protruding part for supporting the support piece.

[0008] Preferably, the other end of the compression joint is provided with a threaded column, and the compression joint is provided with a first stop ring.

[0009] Preferably, the outer wall of the rubber sleeve is provided with a second stop ring.

[0010] Preferably, the support is provided with a first blind hole accommodating the rubber sleeve, the first blind hole is provided with a through hole for the cable to pass through, one end of the first blind hole is provided with a second blind hole, an inner wall of the second blind hole is provided with an internal thread groove, the second stop ring abuts against the second blind hole, the threaded column is threadedly connected to the internal thread groove, and the second stop ring is pressed against the end face of the second blind hole, so that the first stop ring abuts against the end face of the support.

[0011] Preferably, the hollow column comprises a connecting portion and a plurality of contraction portions provided around the connecting portion as an axis, the connecting portion is provided with an external thread groove, the inclined surface is arranged on the outer wall of the contraction portion, and a spacing is arranged between every two contraction portions.

[0012] Beneficial effects:

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] (1) the utility model discloses, when the cable passes through the rubber sleeve, the hollow column is contracted to the axial direction through the nut, the rubber sleeve is deformed, and the gap between the cable and the rubber sleeve is filled, and simultaneously, the hollow column also forms the clamping force for the cable, ensures that the cable is connected and fixed with the support, and the support passes through the O type sealing washer and is assisted by the above -mentioned design, improves the sealing property, simultaneously, prevents the humid air from entering the cabinet, prolongs the service life of electrical element, thereby the technical problem of the background art is overcome, and the product has the advantages of protection effect and prolonging the service life.

[0015] (2) the utility model discloses, through a plurality of compression connectors, a plurality of cables are distinguished, so that maintenance personnel can quickly find the electrical element connected with the cable, and the product has the advantage of convenient maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a side cross-sectional structure schematic view of the utility model discloses a kind of ring main unit with protection effect;

[0017] Figure 2 It is the utility model Figure 1 A partial enlarged view A of a kind of ring main unit with protection effect of the utility model;

[0018] Figure 3 It is an explosion view of the utility model discloses a kind of ring main unit with protection effect;

[0019] Figure 4 It is the structure schematic view of the compression connector of the utility model discloses a kind of ring main unit with protection effect;

[0020] The corresponding relationship between the annotations of each drawing and the component names in the drawing is as follows:

[0021] Reference signs: 1, cabinet body; 2, support; 3, O-shaped sealing ring; 4, compression joint; 5, rubber sleeve; 6, nut; 11, wire hole; 12, protruding part; 21, first blind hole; 22, through hole; 23, second blind hole; 24, internal thread groove; 41, hollow column; 42, first groove; 43, inclined surface; 44, threaded column; 45, first blocking ring; 411, connecting part; 412, contraction part; 413, external thread groove; 414, interval; 51, second blocking ring; 61, shrinkage part. DETAILED DESCRIPTION

[0022] The technical solutions of the utility model will be described below in conjunction with the embodiments, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0023] In the description of the utility model, it needs to be understood that the orientation or position relation indicated by the terms such as 'up', 'down', 'left', 'right' in the terms is the orientation or position relation based on the orientation or position relation shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0024] In the embodiments of the utility model, 'and / or' is only a kind of description of the association relation of associated object, it can represent three kinds of relations, for example, A and / or B, can represent: three cases of existence A alone, existence A and B simultaneously, existence B alone.In addition, the character ' / ' in this paper generally indicates that the front and rear associated objects are a kind of 'or' relation.

[0025] Reference example Figures 1 to 4 A ring main unit with protection effect, including cabinet body 1, the bottom of cabinet body 1 is equipped with wire hole 11, wire hole 11 is equipped with support 2, support 2 and wire hole 11 between being equipped with O-shaped sealing ring 3, support 2 is evenly distributed with several detachable compression joints 4 of equal interval 414 with dot as axis, rubber sleeve 5 is arranged in compression joint 4, one end of compression joint 4 is equipped with hollow column 41, the outer wall entrance of hollow column 41 is equipped with inclined surface 43, nut 6 is threadedly connected with hollow column 41, nut 6 is equipped with shrinkage part 61, and is in abutment with inclined surface 43, so that hollow column 41 is contracted to the axis direction, a plurality of compression joints 4 are used to distinguish a plurality of cables, so that maintenance personnel can quickly find the electrical elements connected to the cable according to the cable;

[0026] It is worth mentioning that the end surface of the wire hole 11 is provided with a protruding part 12 for supporting the support 2, and the protruding part 12 is connected and fixed with the support 2 through a fastener;

[0027] It is worth mentioning that the other end of the compression joint 4 is provided with a threaded column 44, the compression joint 4 is provided with a first stop ring 45, the threaded column 44 is connected and fixed with the second blind hole 23, so that the compression joint 4 is convenient to disassemble and assemble, the first stop ring 45 limits the tightening distance of the nut 6, and excessive extrusion force is prevented from being applied to the contraction part 412;

[0028] It is worth mentioning that the outer wall of the rubber sleeve 5 is provided with a second stop ring 51, the second stop ring 51 is used in cooperation with the threaded column 44, and when the cable passes through the rubber sleeve 5, the rubber sleeve 5 is prevented from being separated from the compression joint 4;

[0029] It is worth mentioning that the support 2 is provided with a first blind hole 21 for accommodating the rubber sleeve 5, the first blind hole 21 is provided with a through hole 22 for the cable to pass through, one end of the first blind hole 21 is provided with a second blind hole 23, the inner wall of the second blind hole 23 is provided with an internal thread groove 24, the second stop ring 51 abuts against the second blind hole 23, the threaded column 44 is threadedly connected to the internal thread groove 24, and the second stop ring 51 is pressed against the end surface of the second blind hole 23, so that the first stop ring 45 abuts against the end surface of the support 2;

[0030] It is worth mentioning that the hollow column 41 comprises a connecting part 411 and a plurality of contraction parts 412 arranged around the connecting part 411 as an axis, the connecting part 411 is provided with an external thread groove 413, the inclined surface 43 is arranged on the outer wall of the contraction part 412, a spacing 414 is arranged between every two contraction parts 412, the external thread groove 413 is threadedly connected with the nut 6, and when the contraction part 412 is contracted in the axial direction of the hollow column 41, the spacing 414 increases with the movement distance of the contraction part 412 in the axial direction, and the spacing 414 between the contraction parts 412 is reduced.

[0031] The use principle of the utility model will be described as follows:

[0032] When the cable passes through the through hole 22 and the rubber sleeve 5 in sequence, the distance between the nut 6 and the first stop ring 45 is gradually shortened by gradually tightening the nut 6, the contraction part 412 is gradually contracted in the axial direction under the influence of the contraction part 61, the contraction part 412 causes the rubber sleeve 5 to deform and fills the gap between the cable and the rubber sleeve 5, and the contraction part 412 also forms a clamping force for the cable, so that the cable is connected and fixed with the support 2, the support 2 passes through the O-shaped sealing ring 3 and is assisted by the above design, the sealing property is improved, the humid air is prevented from entering into the cabinet 1, and the service life of the electrical element is prolonged.

[0033] The above design scheme can make the product have the advantages of protection effect, prolonged service life and convenient maintenance.

[0034] The above is further detailed description of the present application in combination with the specific embodiments, and cannot be deemed as limitation of the present application to the above description. For the ordinary skilled in the art to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or substitutions can be made, which shall be deemed as falling within the protection scope of the present application as defined in the claims.

Claims

1. A ring main unit with protection effect, comprising a cabinet body (1), the bottom of the cabinet body (1) is provided with a wire hole (11), characterized in that: The wire hole (11) is provided with a support (2), and an O-shaped sealing ring (3) is arranged between the wire hole (11) and the support (2); the support (2) is uniformly provided with a plurality of equal-interval (414) detachable compression joints (4) with a dot as an axis; a rubber sleeve (5) is arranged in the compression joint (4); a hollow column (41) is arranged at one end of the compression joint (4); an inclined surface (43) is arranged at the entrance of the outer wall of the hollow column (41); the hollow column (41) is screw-connected with a nut (6); the nut (6) is provided with a shrinkage part (61) and abuts against the inclined surface (43), so that the hollow column (41) is contracted towards the axis.

2. The ring main unit with a protection effect according to claim 1, characterized in that: An end surface of the wire hole (11) is provided with a convex part (12) for supporting the support (2).

3. The ring main unit with protection effect according to claim 2, characterized in that: The other end of the compression joint (4) is provided with a threaded column (44), and the compression joint (4) is provided with a first stop ring (45).

4. The ring main unit with a protection effect according to claim 3, characterized in that: An outer wall of the rubber sleeve (5) is provided with a second stop ring (51).

5. The ring main unit with protection effect according to claim 4, characterized in that: The support (2) is provided with a first blind hole (21) for accommodating the rubber sleeve (5); the first blind hole (21) is provided with a through hole (22) for inserting a cable; one end of the first blind hole (21) is provided with a second blind hole (23); an inner thread groove (24) is arranged on the inner wall of the second blind hole (23); the second stop ring (51) abuts against the second blind hole (23); the threaded column (44) is screw-connected with the inner thread groove (24) and compresses the second stop ring (51) against the end surface of the second blind hole (23), so that the first stop ring (45) abuts against the end surface of the support (2).

6. The ring main unit with protection effect according to claim 1, characterized in that: The hollow column (41) comprises a connecting part (411) and a plurality of contraction parts (412) arranged around the connecting part (411) as an axis; the connecting part (411) is provided with an outer thread groove (413); the inclined surface (43) is arranged on the outer wall of the contraction part (412); and a spacing (414) is arranged between every two contraction parts (412).

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