JPH0575685U - Electric motor phase detector - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a phase detector for an electric motor in a submersible electric pump, which is convenient to use, the operating state of the electric motor is constantly displayed, and the phase sequence can be clearly observed. [Structure] The dividing lines 1a ... 1a of the cable 1 led out from the electric motor side and connected to the power panel are arranged in parallel on the closing surfaces of the closing members 2a. The necessary number of vertical grooves are formed so as to be sandwiched between the cable dividing wires 1a ... 1a, and conductive needles to be inserted into the core wires of the cable dividing wires 1a. Closing members 2 ... 2 connected and closed
The outer peripheral surface of is molded integrally with the cable 1 by the insulating material 6 so that the energization state and phase sequence of the electric motor can be constantly monitored.

Description

[Detailed description of the device]

[0001]

[Technical field of invention]

 The present invention relates to an electric motor phase detector, and more particularly to an electric motor phase detector in a submersible electric pump.

[0002]

[Prior art and its problems]

 Conventionally, a dedicated phase detector has been used for phase detection of an electric motor. In the conventional phase detector, three lead wires with specified phases are led out from the detector body, and the tip of these lead wires is connected to the detected part by a clip each time it is detected. Sequence is detected, and the lead wire is removed from the detected part each time it is detected, which is inconvenient to use and is not suitable for constantly monitoring the phase sequence of the motor. ing.

[0003]

[The purpose of the device]

 An object of the present invention is to eliminate the inconvenience in use as described above, to provide a phase detector which is convenient for use, in which the operating state of the motor is constantly displayed, and the phase sequence can be clearly observed. Especially.

[0004]

【Constitution】

 In the phase detector of the electric motor according to the present invention, the dividing lines of the cable, which are led out from the electric motor side and connected to the power panel, are arranged in parallel on the closing surface of the closing member whose inner side surfaces face each other and are closed. The required number of vertical grooves are formed so as to sandwich them, and the conductive needles that are inserted into the core wires of the cable dividing line are implanted, and these conductive needles are connected to the electrical circuit of the specified signal equipment. In, the outer peripheral surface of the closed closing member is integrally molded with the cable by an insulating material.

[0005]

【Example】

 Hereinafter, description will be given with reference to the drawings of the embodiments.

Reference numeral 1 denotes a cable that is drawn out from the electric motor of the submersible electric pump to the surface of the water and is connected to a power supply panel. The closing surfaces of the closing members 2 ... 2 are formed with a required number of vertical grooves 3 ... 3 near the leading end of the cable 1 for sandwiching the dividing wire 1a. And the conducting needles 4 ... 4 that are inserted into the cores of the cable dividing lines 1a ... 1a that are clamped in the vertical grooves 3 ... 3 when the closing members 2 ... 2 are closed. 4 is electrically connected to the electric circuits of the signal lamps 5a and 5b embedded in the insulating material 6, which will be described later. When the signal light 5a is turned on, and the other direction is reversed, the other signal light 5b is turned on, and If one lead wire is disconnected, both signal lights will be turned on at the same time. Then, the outer peripheral surfaces of the closed closing members 2 ... 2 are surrounded by a mold material, the signal lights 5a and 5b are arranged outward, and the circuit is electrically connected to the conduction needles 4 ... In this state, if the insulating material 6 is poured into the void and the solidified material is released to release the mold material, the outer peripheral surface of the closing members 2 ... It will be molded integrally with the cable 1. In addition, 1b is a ground wire led out from the lower part of the insulating material 6.

Conductor needles 4 ... 4 are inserted into the cores of the cable dividing lines 1a ... 1a, respectively, so that the cable dividing lines 1a. The state, that is, the rotating state of the electric motor is visually recognized from the outside of the insulating material 6 by the lighting state of the signal lights 5a and 5b. Therefore, for example, if one of the signal lamps 5a is displayed in blue and the other signal lamp 5b is displayed in red, it is convenient to visually judge the operating state of the electric motor.

[0008]

[Effect of the device]

 In the electric motor equipped with the device of the present invention, the phase can be detected immediately without the need for a separate instrument. Moreover, since the device of the present invention can be always attached to the cable of the motor and the phase detection can be performed by the signal engine of the visual display, the energization state and the phase sequence of the motor are always maintained. It can be monitored and the operating status can be clearly understood even when multiple electric pumps are in operation or when alternate operation is performed. In addition, even if it is necessary to change the power supply panel, it can be done simply by connecting and changing the dividing line at the tip of the cable to another power supply panel.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of an essential part of the device of the present invention.

FIG. 2 is a plan view of the device of the present invention when the closing member is closed.

FIG. 3 is a plan view when the closing member is closed, which is formed differently from the embodiment of FIG.

FIG. 4 is a plan view when closing the closing member formed in a mode different from the embodiment of FIGS. 2 and 3;

FIG. 5 illustrates an electric circuit diagram in the device of the present invention.

[Explanation of symbols]

 1 Cable 1a Cable dividing line 2 Closing member 3 Vertical groove 4 Continuity needle 6 Insulation material

Claims (1)

[Scope of utility model registration request] Closing member (2) whose inner side surfaces face each other and are closed.
The split line (1a) of the cable (1) led out from the electric motor side and connected to the power panel on the closing surface of (2).
The required number of vertical grooves (3) so as to sandwich a) in parallel.
(3) is formed and the cable dividing line (1a) is formed.
A conductive needle (4) inserted into each core wire of (1a).
The outer circumference of the closed member (2) ... (2) which is closed in a state where the (4) is implanted and the conduction needles (4) ... (4) are connected to the electric circuit of a predetermined signal engine. A phase detector for an electric motor, the surface of which is molded integrally with the cable (1) by an insulating material (6).