220kV crosslinked cable metal sheath grounding box

Abstract

The utility model discloses a 220kV crosslinked cable metal sheath grounding box, which comprises a box body and a plurality of groups of wire conduits integrally formed on the box body, a sealing sleeve connector is arranged on the wire conduits in a threaded manner, the sealing sleeve connector comprises an outer sleeve, an inner ring and a deformation taper sleeve, the lower end of the outer sleeve is arranged on the wire conduits in a threaded manner, the inner ring is fixed on the inner wall of the outer sleeve, and the deformation taper sleeve is fixed on the inner wall of the outer sleeve. The upper end of the deformation taper sleeve is fixedly connected with the inner ring, the upper end and the lower end of the deformation taper sleeve are located in the outer sleeve and the wire conduit respectively, an installation groove is formed in the box body, and a drawing type sealing frame is installed on the edge of the installation groove and comprises a U-shaped guide rail, a T-shaped box door and a locker. The U-shaped guide rail is integrally formed on the front side of the box body, an insertion groove is formed in the inner wall of the U-shaped guide rail, and the T-shaped box door is movably inserted into the insertion groove. According to the cable grounding box designed by the utility model, the wire conduit and the box door which are easy to cause the sealing problem of the box body are improved, and the sealing effect of the box body is ensured on the premise of not using a sealing gasket.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable grounding box technical field, concretely is a kind of 220kV cross-linking cable metal sheath grounding box. BACKGROUND

[0002] Cable grounding box is used for the protection earthing of cable sheath, it is the special device of protecting cable sheath, to avoid the damage of lightning and induced overvoltage to cable sheath, cable grounding box includes connecting copper bar, copper terminal and cable sheath protector, cable grounding box is mainly divided into 35kV / 110kV / 220kV etc. Specification model, in addition, the sealing property of cable grounding box is particularly important, if not properly sealed, it can lead to security problem, therefore, the box of cable grounding box is mostly integrated structure except box door.

[0003] However, the existing cable grounding box has the following problems in the process of using: in order to improve the sealing property of cable grounding box, sealing sleeve pad is usually arranged at the wire tube of box body and box door, the sealing property of box door and box body and wire tube is improved by sealing sleeve pad, and the sealing sleeve pad is mostly designed in exposed mode, and long-term use can cause aging and sealing property decline of sealing sleeve pad, thereby affecting the sealing property of grounding box. Therefore, it is necessary to design corresponding technical solutions to solve the existing technical problems. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of 220kV cross-linking cable metal sheath grounding box, solve the sealing property of cable grounding box for improving usually be arranged with sealing sleeve pad at the wire tube of box body and box door, the sealing property of box door and box body and wire tube is improved by sealing sleeve pad, and the sealing sleeve pad is mostly designed in exposed mode, and long-term use can cause aging and sealing property decline of sealing sleeve pad, thereby affecting the sealing property of grounding box, this technical problem.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of 220kV cross-linking cable metal sheath grounding box, including box body and a plurality of groups of wire tube integrally formed on the box body, sealing sleeve connector is threadedly arranged on the wire tube, the sealing sleeve connector includes sleeve, inner ring and deformation cone sleeve, the lower end of the sleeve is threadedly arranged on the wire tube, the inner ring is fixed on the inner wall of sleeve, the upper end of the deformation cone sleeve is fixedly connected with the inner ring, the upper and lower ends of the deformation cone sleeve are located in the sleeve and wire tube respectively, installation groove is formed in the box body, the edge of the installation groove is provided with pull-out type sealing frame, the pull-out type sealing frame includes U-shaped guide rail, T-shaped box door and lock tight ware, the U-shaped guide rail is integrally formed on the front side of box body, and the inner wall is processed into insertion slot, the T-shaped box door is movably inserted into the insertion slot, the lock tight ware is installed on the T-shaped box door, and the edge of the box body is provided with lock opening matched with the lock tight ware.

[0006] As a preferred form of the utility model, the inside of the deformation cone sleeve is formed with a through hole, the deformation cone sleeve is a hollow circular table structure with the upper end outer diameter larger than the lower end outer diameter, and the deformation cone sleeve is made of rubber material and has a laminated surface structure.

[0007] As a preferred form of the utility model, the lower end outer diameter of the deformation sleeve pad is smaller than the inner diameter of the wire tube and the upper end outer diameter is larger than the inner diameter of the wire tube.

[0008] As a preferred form of the utility model, the inner side of the U-shaped guide rail is formed with a sealing butt joint piece and the right end is provided with a clamping opening.

[0009] As a preferred form of the utility model, the surface of the T-shaped box door is formed with a lug plate and a butt joint groove is formed between the lug plate and the T-shaped box door, the sealing butt joint piece is inserted into the butt joint groove, and the upper and lower ends of the T-shaped box door are also formed with a clamping plate, the clamping plate is used in cooperation with the clamping opening, and both are U-shaped structures.

[0010] As a preferred form of the utility model, the locking device comprises a side rod, a torsion spring, an arc-shaped pressing plate and a limiting column, the side rod is provided with two groups and symmetrically installed on the T-shaped box door, the inner side of the side rod is connected with the arc-shaped pressing plate through the torsion spring, the tail of the arc-shaped pressing plate is in a raised structure and the end is connected with the limiting column, and the limiting column is buckled in the locking opening.

[0011] Compared with the prior art, the utility model has the advantages of the following:

[0012] 1. The utility model improves the structure of the existing cable grounding box, sets the sealing sleeve connector at the wire tube of the grounding box, effectively improves the sealing performance of the cable after entering the wire tube, and optimizes the installation structure of the box door. The box door is designed as a pull-out structure and cooperates with the sealing frame, so that the sealing effect of the box door and the box body is improved without using a sealing pad.

[0013] 2. The cable grounding box designed in the utility model improves the wire tube and the box door prone to sealing problems, and ensures the sealing effect of the box body without using a sealing pad. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall structure diagram of the utility model;

[0015] Figure 2 It is the structure diagram of the sealing sleeve connector of the utility model;

[0016] Figure 3 It is the cross-sectional view of the pull-out sealing frame of the utility model;

[0017] Figure 4 The T-shaped box door side view is described in the utility model.

[0018] Figure 5 The partial A structure diagram of the utility model.

[0019] In the figure: 1, box body; 2, wire tube; 3, sealing sleeve connector; 4, outer sleeve; 5, inner ring; 6, deformation cone sleeve; 7, installation groove; 8, U-shaped guide rail; 9, T-shaped box door; 10, locking device; 11, insertion slot; 12, locking port; 13, through hole; 14, sealing butt joint piece; 15, clamping port; 16, protruding plate; 17, butt joint groove; 18, clamping plate; 19, side rod; 20, torsion spring; 21, arc-shaped pressing plate; 22, limiting column. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figures 1-5 , the utility model provides a technical scheme: a 220kV crosslinked cable metal sheath grounding box, including box body 1 and a plurality of groups of wire tube 2 that are integrally formed on box body 1, wire tube 2 is provided with sealing sleeve connector 3 on screw thread, sealing sleeve connector 3 includes outer sleeve 4, inner ring 5 and deformation cone sleeve 6, the lower end of outer sleeve 4 is provided on wire tube 2 on screw thread, inner ring 5 is fixed on the inner wall of outer sleeve 4, the upper end of deformation cone sleeve 6 is fixedly connected with inner ring 5, the upper and lower ends of deformation cone sleeve 6 are located in outer sleeve 4, wire tube 2 respectively, installation groove 7 is formed in box body 1, the edge of installation groove 7 is installed with pull-out type sealing frame, pull-out type sealing frame includes U-shaped guide rail 8, T-shaped box door 9 and locking device 10, U-shaped guide rail 8 is integrally formed on the front side of box body 1 and the inner wall is processed into insertion slot 11, T-shaped box door 9 is movably inserted into insertion slot 11, locking device 10 is installed on T-shaped box door 9, the edge of box body 1 is provided with locking port 12 used in cooperation with locking device 10.

[0022] Further improvement, as shown in Figure 2 , the inside of deformation cone sleeve 6 is formed with through hole 13, deformation cone sleeve 6 is hollow circular truncated cone structure and the outer diameter of upper end is greater than the outer diameter of lower end, deformation cone sleeve 6 adopts rubber material and the surface is in laminated structure.

[0023] Further improvement, as shown in Figure 2As shown, the lower end of the deformation cone sleeve 6 has an outer diameter smaller than the inner diameter of the wire tube 2, and the upper end has an outer diameter larger than the inner diameter of the wire tube 2. This design facilitates the deformation cone sleeve 6 to be inserted into the wire tube 2, and the deformation cone sleeve 6 is extruded and shrunk to be sealed and connected with the cable.

[0024] Further improved, as shown in Figure 3 As shown, the inner side of the U-shaped guide rail 8 is formed with a sealing connecting piece 14, and the right end is provided with a clamping opening 15.

[0025] Further improved, as shown in Figure 3 and 4 As shown, the surface of the T-shaped box door 9 is formed with a convex plate 16, and a connecting groove 17 is formed between the two. The sealing connecting piece 14 is inserted into the connecting groove 17. The upper and lower ends of the T-shaped box door 9 are also formed with a clamping plate 18. The clamping plate 18 is used in cooperation with the clamping opening 15, and both are U-shaped structures. The T-shaped box door 9 is inserted into the insertion slot 11, and the sealing connecting piece 14 is inserted into the connecting groove 17, and the clamping plate 15 is clamped into the clamping opening 15, so as to achieve the purpose of high sealing connection of the T-shaped box door 9 and the U-shaped guide rail 8.

[0026] Specifically, the locking device 10 includes a side rod 19, a torsion spring 20, an arc-shaped pressing plate 21, and a limiting column 22. The side rod 19 is provided with two groups and is symmetrically installed on the T-shaped box door 9. The inner side of the side rod 19 is connected with the arc-shaped pressing plate 21 through the torsion spring 20. The tail of the arc-shaped pressing plate 21 is in a raised structure, and the end is connected with the limiting column 22. The limiting column 22 is buckled in the locking opening 12. When it is needed to open the T-shaped box door 9, the tail of the arc-shaped pressing plate 21 is pressed to make the limiting column 22 rise, and the limiting column 22 is separated from the locking opening 12 to open the T-shaped box door 9.

[0027] In use: the cable is inserted from the wire tube 2, and the inner end of the cable is connected with the components inside the box body 1. Then the sealing sleeve connector 3 is screwed down. In the process of screwing down the sealing sleeve connector 3, the deformation cone sleeve 6 is extruded and shrunk to be sealed and connected with the cable, so as to achieve the purpose of sealing the wire tube 2. In addition, the T-shaped box door 9 is inserted into the insertion slot 11, and the sealing connecting piece 14 is inserted into the connecting groove 17, and the clamping plate 15 is clamped into the clamping opening 15, so as to achieve the purpose of high sealing connection of the T-shaped box door 9 and the U-shaped guide rail 8. When it is needed to open the T-shaped box door 9, the tail of the arc-shaped pressing plate 21 is pressed to make the limiting column 22 rise, and the limiting column 22 is separated from the locking opening 12 to open the T-shaped box door 9.

[0028] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0029] In addition, the terms "first", "second", "third", "fourth" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features, so that the features limited by "first", "second", "third", "fourth" can be explicitly or implicitly included at least one feature.

[0030] In the utility model, unless otherwise expressly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise expressly limited, the above-mentioned terms in the utility model can be understood according to the specific meaning of the specific circumstances by the ordinary skilled in the art.

[0031] Finally, it should be pointed out that: the above-mentioned only for the preferred embodiment of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A 220 kV cross-linked cable metal sheath grounding box, characterized in that: The utility model relates to a box (1) and a plurality of groups of wire tube (2) integrally formed on the box (1), the wire tube (2) is provided with sealing sleeve adapter (3) on the screw, the sealing sleeve adapter (3) includes outer sleeve (4), inner ring (5) and deformation cone sleeve (6), the lower end of outer sleeve (4) is provided on the wire tube (2) on the screw, the inner ring (5) is fixed on the inner wall of outer sleeve (4), the upper end of deformation cone sleeve (6) is fixedly connected with inner ring (5), the upper and lower ends of deformation cone sleeve (6) are located in outer sleeve (4) and wire tube (2) respectively, the installation groove (7) is formed in the box (1), the edge of installation groove (7) is provided with pull type sealing frame, the pull type sealing frame includes U-shaped guide rail (8), T-shaped box door (9) and lock (10), the U-shaped guide rail (8) is integrally formed on the front side of box (1) and is processed into insertion groove (11) on the inner wall, the T-shaped box door (9) is movably inserted into insertion groove (11), the lock (10) is installed on T-shaped box door (9), the edge of box (1) is provided with locking opening (12) matched with lock (10).

2. The 220 kV cross-linked cable metal sheath grounding box according to claim 1, characterized in that: The inside of the deformation cone sleeve (6) is formed with a through hole (13), the deformation cone sleeve (6) is in a hollow circular truncated cone structure, the outer diameter of the upper end is larger than that of the lower end, the deformation cone sleeve (6) is made of rubber material and has a laminated surface structure.

3. The 220 kV cross-linked cable metal sheath grounding box according to claim 2, characterized in that: The outer diameter of the lower end of the deformation cone sleeve (6) is smaller than the inner diameter of the wire tube (2), and the outer diameter of the upper end is larger than the inner diameter of the wire tube (2).

4. The 220 kV XL cable metal sheath grounding box according to claim 1, characterized in that: The inner side of the U-shaped guide rail (8) is processed into a sealing butt piece (14), and the right end is provided with a clamping opening (15).

5. A 220 kV cross-linked cable metal sheath grounding box according to claim 4, characterized in that: The surface of the T-shaped box door (9) is processed into a lug plate (16), and a butt groove (17) is formed between the lug plate (16) and the T-shaped box door (9), the sealing butt piece (14) is inserted into the butt groove (17), and the upper and lower ends of the T-shaped box door (9) are also processed into clamping plates (18), the clamping plates (18) are matched with the clamping opening (15), and both are U-shaped structures.

6. A 220 kV cross-linked cable metal sheath grounding box according to claim 5, characterized in that: The lock (10) includes side rods (19), torsion springs (20), arc-shaped pressing plates (21) and limiting columns (22), the side rods (19) are provided in two groups and symmetrically installed on the T-shaped box door (9), the inner side of the side rod (19) is connected with the arc-shaped pressing plate (21) through the torsion spring (20), the tail of the arc-shaped pressing plate (21) is in a raised structure, and the end is connected with the limiting column (22), and the limiting column (22) is buckled in the locking opening (12).

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