JPS6142290A - Phase detector of motor - Google Patents

Abstract

PURPOSE:To always display the rotating direction of a motor by passing a conducting stylus through a cable dividing wires to detect the phase rotating direction by the light of a signal lamp. CONSTITUTION:A closing member 2 is mounted on a cable 1. The prescribed number of longitudinal grooves 3 for holding a cable 1a are formed on the member 2, and a conductive stylus 4 to be inserted into the core wires of the cable 1a is provided. The stylus 4 is electrically connected with a circuit of signal lamps 5a, 5b buried in an insulating material 6, and when a motor is rotated normally, one lamp 5a is fired, and vice versa. If one lead is disconnected, both lamps are simultaneously fired.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Purpose The present invention relates to a phase detection device for an electric motor, particularly to a phase detection device for a motor in a submersible electric pump.

Conventionally, a specially made phase detector has been used to check the phase of an electric motor. In conventional phase detectors, three lead wires with designated phases are led out from the main body of the detector, and the ends of these lead wires are connected to the detected part with clips each time detection is performed. After detecting the phase sequence, the IJ-wire must be removed from the detected part, which is very inconvenient to use, and has the disadvantage that it is not suitable for constantly monitoring the phase sequence of the motor. have.

SUMMARY OF THE INVENTION An object of the present invention is to provide a phase inspection device that is convenient to use, constantly displays the operating status of the electric motor, and allows the phase order to be clearly seen. It is in.

(2) Structure In the phase detection device for an electric motor according to the present invention, a cable led out from the electric motor side and connected to the power supply board is connected to the closing surface of the closing member that is closed with their inner surfaces facing each other. Form a required number of vertical grooves so as to sandwich the split wires in parallel, and install conductive needles to be inserted into each core wire of the cable split wires, and connect these conductive needles to the electric circuit of the designated signal engine. In the connected state, the outer peripheral surface of the closed closing member is integrally molded with the cable using an insulating material.

To explain the drawings of the embodiment, 1 is a cable led out from the electric motor of the submersible electric pump to the water surface and connected to the power supply board, 2... 2 are cables that are closed so that they can be moved in and out with their inner surfaces facing each other. These closing members 2.
. . 2 is formed with a required number of vertical grooves 3 . . . 3 for holding the dividing lines 1 a . . . 1 a near the lead-out tip of the cable 1, and When the component members 2...2 are closed, conductive needles 4...4 are implanted to be inserted into the core wires of the respective cable split wires 1a...1a that are sandwiched within the vertical grooves 3...3. At the same time, the conductive needles 4 and 5 are connected to the circuits of the signal lights 5λ and 5b installed inside the insulating material 6, which will be described later.
By electrically connecting . The circuit is configured so that both signal lights turn on at the same time in the event that the main signal is off. Then, the outer circumferential surface of the closed closing member 2...2 is surrounded by a shape material, and the signal light 5a,
5b facing outward and connect the circuit to the conductive needle 4.
... Pour the insulating material 6 into the gap while electrically connected to the insulating material 6, wait for it to solidify, and then turn the mold material into l1lllI.
The model is the signal light 5a.

The outer peripheral surfaces of the closing members 2 . . . 2 are integrally molded with the cable 1 using the insulating material 6 with the closing members 5 b incorporated therein. . Note that 1b is a ground wire led out from the lower part of the insulating material 6.

Since conductive needles 4...4 are inserted into the core wires of each cable split wire 1a...1a, these conductive needles 4...
... 4 through the cable split line 1a...] Is it the connection state of a, that is, the rotation state of the motor, or a signal? ! 5 a.

Depending on the lighting state of 5b, it can be seen visually from outside the insulating material 6. Therefore, for example, if one signal light 5a is displayed in blue and the other signal light 5b is displayed in red, it is convenient for visually determining the driving state of the 1111 motive.

(3) Effects In a motor equipped with the device of the present invention, phase detection can be performed immediately without requiring a separate meter. In addition, the device of the present invention can be attached to the motor cable at all times, and phase detection can be performed using a signal system such as a visual display. It can be constantly monitored and the operating status can be clearly understood even when multiple electric pumps are being operated or when they are being operated alternately. Also,
Even if it becomes necessary to change the history of the power supply panel, it can be easily done by simply connecting the split wire at the end of the cable to another power supply panel.

[Brief explanation of the drawing]

Fig. fIS1 is a vertical sectional side view of the main part of the device of the present invention, Fig. 2 0)
[A] [B] [C] is a plan view of a closing member in the device of the present invention, and the third diagram is an example of an electric circuit diagram in the device of the present invention. 1... Cable, 1a cable dividing line, 2... Closing member, 3... Vertical groove, 4... Conductive needle, 6... Insulating material.

Claims (1)

[Claims] A closing member (2) whose inner surfaces face each other and are closed.
... On the closing surface of (2), there is a dividing line (1a) of the cable (1) led out from the motor side and connected to the power supply panel... (
1a), the required number of vertical grooves (3) and
...(3) and the above cable dividing line (1)
a)... Conduction needle (4) inserted into each core wire of (1a)
...(4) is implanted, and these conductive needles (4)...(4
) is connected to the electric circuit of a designated signal engine, the closed closing member (2)...The outer peripheral surface of (2) and the insulating material (6) are molded integrally with the cable (1). A phase detection device for electric motors.