CN214476788U - Outdoor current transformer terminal box extension rain-proof seat - Google Patents
Outdoor current transformer terminal box extension rain-proof seat Download PDFInfo
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- CN214476788U CN214476788U CN202120405972.4U CN202120405972U CN214476788U CN 214476788 U CN214476788 U CN 214476788U CN 202120405972 U CN202120405972 U CN 202120405972U CN 214476788 U CN214476788 U CN 214476788U
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Abstract
The utility model provides an outdoor current transformer terminal box extension rain-proof seat, includes barrel (11), and barrel (11) both ends all are equipped with flange (9), and barrel (11) top is equipped with rain-proof cover connecting plate (12), and rain-proof cover connecting plate (12) are connected with rain-proof cover (8), and barrel (11) bottom is equipped with a plurality of secondary cable mounting holes (10). The utility model discloses can be under the mounting means who does not change former terminal box, through increasing the rain-proof seat of an extension, change former cable inlet wire mode, improve current transformer terminal box waterproof performance.
Description
Technical Field
The utility model belongs to outdoor current transformer terminal box structure field, in particular to outdoor current transformer terminal box adds rain-proof seat of extension.
Background
With the development of power systems, in order to be suitable for power long-distance transmission, more and more power transmission lines with power transmission channels are built, and secondary terminal boxes of some current transformers (hereinafter, referred to as "CT") for line protection are installed outdoors.
The defects and shortcomings of the prior art are as follows:
some CT secondary terminal boxes for line protection are installed outdoors, cables of the CT secondary terminal boxes are in an upper wiring mode (see figure 5), and waterproof treatment is needed due to the fact that the connection positions of the cables or cable hoses and holes are not sealed tightly. But the waterproof adhesive tape or the glue can be aged slowly when being exposed to wind and sun outdoors for a long time, and rainwater can enter the box from the cable hole. The accumulated water in the box can damp the CT secondary terminal row and even the CT body, reduce the ground and phase insulation of the cable, even cause the short circuit of the phase cable, cause the misoperation of line protection and influence the safety and stability of the delivery of the power system. In addition, do water repellent treatment to the terminal box every year, work load is big, and the time that needs is long, especially handles when the rainwater is many and the circuit operation in summer, more has the response electricity electric shock danger.
SUMMERY OF THE UTILITY MODEL
In view of the technical problem that the background art exists, the utility model provides an outdoor current transformer terminal box adds rain-proof seat of extension can be under the mounting means who does not change former terminal box, through adding the rain-proof seat of extension, changes former cable inlet wire mode, improves current transformer terminal box waterproof performance.
In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:
the utility model provides an outdoor current transformer terminal box extension rain-proof seat, includes the barrel, and the barrel both ends all are equipped with the flange, and the barrel top is equipped with rain-proof cover connecting plate, and rain-proof cover connecting plate is connected with rain-proof cover, and the barrel bottom is equipped with a plurality of secondary cable mounting holes.
In a preferred scheme, a flange on one side of the cylinder is used for being connected with a current transformer terminal box, and a flange on the other side of the cylinder is used for being connected with a cover plate of the current transformer terminal box; the rain cover is positioned above an original secondary cable mounting hole of the current transformer terminal box; the original secondary cable mounting hole is used for mounting a plug.
In the preferred scheme, a cable fixing cross arm is arranged at the secondary cable mounting hole.
In the preferred scheme, rain-proof cover tip detachably be equipped with the sealing strip, the sealing strip is used for contacting with current transformer case body.
In the preferred scheme, the sealing strip be semi-circular cylinder structure, be equipped with the bolt hole on the sealing strip, the sealing strip passes through the bolt and is connected with rain-proof cover.
In the preferred scheme, rain-proof cover be L type structure, rain-proof cover corner is the arc bending and has formed the crooked section of elasticity.
This patent can reach following beneficial effect:
the utility model discloses under the prerequisite that does not change former CT secondary terminal box mounting means, through increasing the rain-proof seat of extension, simple manufacture, simple to operate. The size can be changed according to actual conditions, the outdoor CT terminal box is suitable for various outdoor CT terminal boxes or other terminal box devices, and the universality is high. The utility model discloses under the prerequisite that does not change former CT secondary terminal box mounting means, change former cable inlet wire mode, increased a canopy, improve terminal box top and holistic waterproof performance, improved the operation safety of equipment.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic structural view of the present invention in embodiment 1;
FIG. 2 is a schematic view of the installation of the present invention in embodiment 1;
fig. 3 is a side view of the present invention in example 1;
fig. 4 is a perspective view of the present invention in embodiment 1;
FIG. 5 is a schematic structural diagram of a terminal box of a conventional outdoor current transformer;
fig. 6 is a schematic structural view of the present invention in embodiment 2;
fig. 7 is an installation diagram of the present invention in embodiment 2;
fig. 8 is a three-dimensional view of the sealing strip of the present invention in embodiment 2.
In the figure: the current transformer box comprises a cover plate 1, a secondary cable 2, a cover plate connecting bolt 3, a sealing ring 4, a current transformer box body 5, an original secondary cable mounting hole 6, a plug 7, a rainproof cover 8, a flange 9, a secondary cable mounting hole 10, a barrel 11, a rainproof cover connecting plate 12, a cable fixing cross arm 13, a sealing strip 14, a bolt hole 15 and an elastic bent section 16.
Detailed Description
Example 1:
the preferred scheme is as shown in fig. 1-4, an outdoor current transformer terminal box extension rain-proof seat, including barrel 11, 11 both ends of barrel all are equipped with flange 9, and 11 tops of barrel are equipped with rain-proof cover connecting plate 12, and rain-proof cover connecting plate 12 is connected with rain- proof cover 8, and 11 bottoms of barrel are equipped with a plurality of secondary cable mounting holes 10.
The existing outdoor current transformer terminal box structure is shown in fig. 5, and comprises a terminal box body, a cover plate 1, a secondary cable 2, a cover plate connecting bolt 3 and a sealing ring 4, wherein an original secondary cable mounting hole 6 is arranged at the top of the terminal box body. The technical scheme mainly improves the existing outdoor current transformer terminal box, designs a lengthened rainproof seat, and sets the shape of the lengthened rainproof seat according to the shape of the terminal box body; after the cover plate 1 is removed, the cylinder body 11 is connected with the terminal box body, the original secondary cable 2 is removed, the remained original secondary cable mounting hole 6 is plugged by a plug, and a rain cover 8 is designed to shield rain; the detached cover 1 is reattached to the barrel 11.
As shown in fig. 2, one side flange 9 of the cylinder 11 is used for connecting with a current transformer terminal box, and the other side flange 9 of the cylinder 11 is used for connecting with a cover plate 1 of the current transformer terminal box; the rain cover 8 is positioned above the primary secondary cable mounting hole 6 of the current transformer terminal box; and the original secondary cable mounting hole 6 is used for mounting a plug 7.
Further, a cable fixing cross arm 13 is arranged at the secondary cable mounting hole 10. The cable fixing cross arm 13 is convenient for fixing the cable and prevents the cable from pulling the wiring terminal downwards to cause a CT open circuit.
Example 2:
on the basis of the embodiment 1, the following technical scheme is introduced:
as shown in fig. 6-8, the end of the rain-proof cover 8 is detachably provided with a sealing strip 14, and the sealing strip 14 is used for contacting with the current transformer box body 5.
The present embodiment designs the weatherstrip 14 for the purpose of: the rainwater is prevented from leaking from the gap between the rainproof cover 8 and the current transformer box body 5, so that the terminal box is prevented from water inflow.
Further, the sealing strip 14 is a semicircular column structure, a bolt hole 15 is formed in the sealing strip 14, and the sealing strip 14 is connected with the rain cover 8 through a bolt.
Further, rain-proof cover 8 is L type structure, and rain-proof cover 8 corner is the arc bending and has formed elasticity curved section 16.
The rain-proof face of rain-proof cover 8 slopes down slightly, and when this rain-proof seat of extension and terminal box connected back, rain-proof cover 8 keeps off the rain face and receives the extrusion and upwards rotate, and elasticity curved section 16 plays elasticity extrusion effect, can guarantee that sealing strip 14 and current transformer case body 5 have good contact effect.
The installation process of the whole device is as follows:
the method comprises the following steps: detaching the cover plate 1 of the original terminal box, unfastening all external cable terminals in the CT terminal box, and after the external cable terminals are wrapped by insulating tapes, drawing out the cables from the upper end of the terminal box;
step two: connecting the customized lengthened rainproof base with the original CT terminal box by using a rubber sealing ring and a bolt;
step three: sealing an original secondary cable mounting hole 6 at the upper part of an original CT terminal box by adopting a rubber sealing ring and metal plugs, and mounting a rain cover 8 above the cable hole to ensure the waterproof performance above the terminal box and the whole waterproof performance;
step four: connecting a cable into a terminal from a secondary cable mounting hole 10 at the bottom of the lengthened rainproof seat, fixing the cable on the cable fixing cross arm, and performing waterproof treatment in a cable hole below the cable fixing cross arm;
step five: through the original screw holes on the screw, the sealing gasket, the terminal box and the box door, the terminal box cover plate 1 is arranged on the outer side of the lengthened rainproof seat, the contact of the joint surface is good, waterproof treatment is carried out, and the waterproof performance of the whole terminal box is ensured.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (6)
1. The utility model provides an outdoor current transformer terminal box extension rain-proof seat which characterized in that: the cable connector comprises a barrel body (11), flanges (9) are arranged at two ends of the barrel body (11), a rain cover connecting plate (12) is arranged at the top of the barrel body (11), the rain cover connecting plate (12) is connected with a rain cover (8), and a plurality of secondary cable mounting holes (10) are formed in the bottom of the barrel body (11).
2. The outdoor current transformer terminal box lengthening rainproof base as claimed in claim 1, wherein: one side flange (9) of the cylinder (11) is used for being connected with a current transformer terminal box, and the other side flange (9) of the cylinder (11) is used for being connected with a cover plate (1) of the current transformer terminal box; the rain cover (8) is positioned above an original secondary cable mounting hole (6) of the current transformer terminal box; and the original secondary cable mounting hole (6) is used for mounting a plug (7).
3. The outdoor current transformer terminal box lengthening rainproof base as claimed in claim 1, wherein: and a cable fixing cross arm (13) is arranged at the secondary cable mounting hole (10).
4. The outdoor current transformer terminal box lengthening rainproof base as claimed in claim 1, wherein: rain-proof cover (8) tip detachably is equipped with sealing strip (14), and sealing strip (14) are used for contacting with current transformer case body (5).
5. The outdoor current transformer terminal box lengthening rainproof base as claimed in claim 4, wherein: the sealing strip (14) is of a semicircular column structure, a bolt hole (15) is formed in the sealing strip (14), and the sealing strip (14) is connected with the rain cover (8) through a bolt.
6. The outdoor current transformer terminal box lengthening rainproof base as claimed in claim 1 or 5, wherein: rain-proof cover (8) are L type structure, and rain-proof cover (8) corner is the arc bending and has formed elasticity curved section (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120405972.4U CN214476788U (en) | 2021-02-24 | 2021-02-24 | Outdoor current transformer terminal box extension rain-proof seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120405972.4U CN214476788U (en) | 2021-02-24 | 2021-02-24 | Outdoor current transformer terminal box extension rain-proof seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214476788U true CN214476788U (en) | 2021-10-22 |
Family
ID=78145387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120405972.4U Active CN214476788U (en) | 2021-02-24 | 2021-02-24 | Outdoor current transformer terminal box extension rain-proof seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214476788U (en) |
-
2021
- 2021-02-24 CN CN202120405972.4U patent/CN214476788U/en active Active
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