Cable dry-type line-outgoing device of electric diving pump

Abstract

The invention discloses a cable dry-type line-outgoing device of an electric diving pump, comprising a line outgoing box (5), a cable protecting tube (3) and a cable (4), wherein the line outgoing box (5) is positioned in a shaft (2) and is connected to the top of an electric diving pump (7); one end of the cable protecting tube (3) is connected with the top of the line outgoing box (5), and the other end extends out of the manhole cover (1) of the shaft (2); and the cable (4) is positioned in the cable protecting tube (3) and passes through the line outgoing box (5) to be connected with the electric diving pump (7). The cable line-outgoing device also comprises an line outgoing sealing device which is connected to the manhole cover (1), and one end of the cable protecting tube (3), whichextends out of the manhole cover (1), is positioned in the line outgoing sealing device. The above structure prevents the port of the top end of the cable protecting tube from exposing; thus, the cable is in the dry environment all the time, which not only prevents running water pumped by the electric diving pump from washing the cable but also avoids dipping the cable by rain so as to ensure that the electric diving pump safely and normally operates.

Description

technical field [0001] The invention relates to the technical field of hydraulic machinery, in particular to a cable dry outlet device for 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. Since the submersible electric pump works underwater in the well, and the submersible electric pump is connected to the control cabinet in the control room through a cable, an outlet device is usually provided outside the cable to protect the cable from being damaged by the submersible electric pump. The water flow pumped by the pump scours. The outlet device in the prior art includes an outlet box, a cable protection tube and an anti-lift pressure plate. The outlet box is fixedly connected to the top of the submersible electric pump, and the top of the well is provided with a well c...

AI Technical Summary

Problems solved by technology

[0004] 1) The function of the cable protection tube is to protect the cable from being washed by the water pumped by the pump, but in actual conditions, there are many submersible pump pump stations that do not need a pump room, that is to say, they are open-air, so when it rains When rainwater is easy to enter the cable protection tube from the port at the upper end of the cable protection tube, the cables in the cable protection tube are easy to be in a humid environment, which brings great safety hazards to the operation of the submersible pump;

[0005] 2) There is no drain hole at the lower end of the cable protection tube, and the rainwater leaking into the cable protection tube cannot be drained out, resulting in the long-term immersion of the cable in water, which also brings great safety hazards to the operation of the submersible pump;

[0006] 3) At the same time, there is no water leakage alarm device in the cable protection tube, so it is difficult to find whether there is water in the cable protection tube, so that it is difficult for the operators on the ground to find out and eliminate the safety hazard in time;

[0007] 4) In addition, the shaft of some submersible electric pumps is very deep, some even nearly 30 meters, so the cables and cable protection pipes of submersible electric pumps also need to be very long, because the cable protection pipes are generally made of steel round pipes, Although it can be divided into several sections horizontally, it is necessary to pass a section of cable protection tube through the cable before connecting with the submersible pump, which brings great inconvenience to the installation, maintenance and disassembly of the submersible pump.

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