Submersible cable junction box

Abstract

The invention discloses a submersible cable junction box comprising a box body (16), end sockets of a random cable (1), end sockets of an output cable (17), a sealing cap (7) and two outlet boxes (2), wherein the sealing cap (7) is connected to the top of the box body (16), and a first sealing device (5) is arranged in the contact position; the two outlet boxes (2) are respectively connected to both ends of the box body, and a second sealing device (4) is arranged in each contact position; and the end sockets of the random cable (1) and the end sockets of the output cable (17) respectively pass through the outlet boxes (2) on the two ends of the box body (16) and are connected by a waterproof joint (6) in the box body (16), the joint of the cable and the outlet boxes (2) is equipped with a third sealing device (9). After adopting the structure, the whole junction box is completely in a sealing state, and can achieve a submersible protection level, thus water can not enter the box body, and the phenomenon that an electric pump is burned out by the generation of short circuit is avoided.

Description

technical field [0001] The invention relates to the field of electric power and signal transmission of underwater equipment, in particular to a submersible cable junction box matched with a submersible electric pump. Background technique [0002] At present, submersible electric pumps are more and more widely used. It is a kind of water pump in which both the impeller of the pump body and the motor driving the impeller are submerged in water. Generally, the submersible electric pump is equipped with a control room when it is used, and the control room is equipped with a control cabinet, etc., and the submersible electric pump is connected to the control cabinet through cables. According to the needs of actual use, the control room can be very close to the submersible pump, or it can be far away, and some are even hundreds of meters away. In many cases, some submersible electric pumps are affected by the surrounding environment, and the control room will be far away from the...

AI Technical Summary

Problems solved by technology

[0005] 1) Since some electric pumps are built in low-lying places, when the flood comes, the junction box will be submerged, so that the junction box and the cables outside the junction box are all located in the water, and there is a hole on the box that is larger than the diameter of the cable. Several holes need to be large, so water can easily enter the junction box. In this way, the sealing performance of the junction box is not good, and its protection level is very low, so it cannot work underwater at all;

[0006] 2) The connection method of the two sections of cables in the junction box is not sealed. After water enters the junction box, it will cause a short circuit between the two sections of cables in the junction box, resulting in the burning of the submersible pump;

[0007] 3) At the same time, the connection method of the two sections of cables in the junction box is not firm, and it is easy to disengage, so the electric pump cannot work normally

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