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A safe universal low-voltage cable distribution box

A low-voltage cable and distribution box technology, which is applied to cable joints, coatings, anti-corrosion coatings, etc., can solve the problems of inconvenient maintenance and long leakage inspection time, and achieve the effect of convenient maintenance and increased maintenance and inspection efficiency

Active Publication Date: 2020-11-24
STATE GRID ZHEJIANG KAIHUA POWER SUPPLY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems such as long time for line equipment leakage investigation and very inconvenient maintenance work, the present invention proposes an integrated floor-standing safe universal low-voltage cable distribution box with leakage indication function and fast circuit switching

Method used

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  • A safe universal low-voltage cable distribution box
  • A safe universal low-voltage cable distribution box
  • A safe universal low-voltage cable distribution box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: as Figure 1-5 As shown, a safe universal low-voltage cable distribution box includes an upper box body 1, a lower box body 2 and a grounding body 9, and the lower box body 2 and the grounding body 9 are arranged below the upper box body 1 and connected to the ground. The surface of the grounding body 9 is coated with a water-based polyurethane acrylate hydrophobic paint coating, the upper box 1 is hinged with a door 21, and the upper end of the upper box 1 is provided with a tapered waterproof board 3, and the tapered waterproof board 3A waterproof strip 15 is provided around the bottom, the waterproof strip 15 includes a connecting plate 151 and an extension plate 152, one side of the extending plate 152 is connected to the connecting plate 151 and its upper surface is inclined downward, and the connecting plate 151 is connected by a bolt Bolt connection around hole 16 and conical waterproof board 3 bottoms.

[0040] Both sides of the upper box body 1 a...

Embodiment 2

[0044] Embodiment 2: the preparation method of waterborne polyurethane acrylate hydrophobic coating comprises the following preparation steps:

[0045] (1) 20g of diphenylmethane diisocyanate, 1.1g of dimethylol propionic acid, 4.8g of ethylene glycol and 17g of polytetrahydrofuran ether after drying at 85°C were mixed and added to 15g of acetone, and then 1.8g of dihydrofuran ether was added. Dibutyltin laurate was condensed and refluxed at 80°C for 2.5 hours to obtain a polyurethane prepolymer;

[0046] (2) Add 2.8g of hydroxyethyl methacrylate to the polyurethane prepolymer, keep the same temperature for 1.5h, then cool down to 30°C, add 25g of 2wt% ammonia water, and neutralize for 0.5h to obtain waterborne polyurethane;

[0047] (3) Add water-based polyurethane, 5.2g of 2-oxirane methyl methacrylate and 6.3g of perfluorohexyl ethyl acrylate to 90g of deionized water, then add 0.35g of sodium lauryl sulfate and 0.13g of potassium persulfate was reacted at 60°C for 1.5h to...

Embodiment 3

[0051] Embodiment 3: the preparation method of waterborne polyurethane acrylate hydrophobic coating comprises the following preparation steps:

[0052] (1) 30g of diphenylmethane diisocyanate, 1.5g of dimethylolpropionic acid, 3.8g of ethylene glycol and 38g of polytetrahydrofuran ether after drying at 90°C were mixed and added to 19g of acetone, followed by adding 2.2g of Dibutyltin laurate was condensed and refluxed at 90°C for 2 hours to obtain a polyurethane prepolymer;

[0053] (2) Add 3.3g of hydroxyethyl methacrylate to the polyurethane prepolymer, keep the same temperature for 2h, then cool down to 45°C, add 7g of 7wt% ammonia water, and neutralize for 0.6h to obtain waterborne polyurethane;

[0054] (3) Add water-based polyurethane, 5.2g of 2-oxirane methyl methacrylate and 7.8g of perfluorohexyl ethyl acrylate to 100g of deionized water, then add 0.45g of sodium lauryl sulfate and 0.15g of potassium persulfate was reacted at 50°C for 2 hours to obtain a water-based ...

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Abstract

The invention relates to the technical field of a cable branching box. The cable branching box comprises an upper box body, a lower box body and a grounding body, wherein a conical waterproof plate isarranged at an upper end of the upper box body, a residual current detector and a signal relay are arranged at an upper part of the upper box body, a load isolation switch is arranged below the residual current detector and is connected with a grounding body circuit, a wiring busbar is arranged below the load isolation switch and is connected with the residual current detector, and a residual current signal acquisition ring is arranged on an inner side surface of the upper box body and is connected with the residual current detector. Whether electric leakage occurs can be judged according tothe fact whether the relay is turned on, and the fault troubleshooting efficiency of a circuit is greatly improved; during circuit maintenance, a cable can be connected with ground by the load isolation switch on the branching box and a grounding body, and the maintenance efficiency is improved; and moreover, a waterborne polyurethane acrylate lyophobic coating layer is coated on a surface of thegrounding body, the hydrophobicity is endowed, and the cable branching box is prevented from being rusted and corroded.

Description

technical field [0001] The invention relates to the technical field of cable distribution boxes, in particular to a safe and universal low-voltage cable distribution box. Background technique [0002] The cable distribution box is an ordinary device for branching, branching, connecting and converting the cable circuit. The existing cable distribution box has a single function. When the line fails and is repaired, it takes a long time to check the line equipment leakage , the range is large, and the fault line cannot be quickly located, which makes the maintenance work very inconvenient, and, because the ground wire needs to be installed during the line maintenance, the efficiency of the maintenance work is greatly reduced, and there are serious safety hazards. [0003] For example, a "a new type of cable distribution box" disclosed in Chinese patent literature, its announcement number CN207947596U, discloses a new type of cable distribution box, including a branch box body a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G15/10C09D151/08C09D7/62C09D5/08
Inventor 邵孜辉卢谓全陈维新余志平汪文斌徐益民留益成刘健
Owner STATE GRID ZHEJIANG KAIHUA POWER SUPPLY