JPH0720074U - Electric motor phase detector - Google Patents

Abstract

(57) [Summary] [Object] To provide a phase detector for an electric motor in a submersible electric pump, which is convenient to use, constantly displays the operating state of the electric motor, and can clearly recognize the phase sequence. [Structure] The dividing lines 1a ... 1a of the cable 1 led out from the electric motor side and connected to the power supply panel are arranged in parallel on the closing surfaces of the closing members 2a. .. 3a are formed so as to be sandwiched between them to form the sandwiching body 2, and the cable dividing lines 1a.
A conductive needle to be inserted into each core wire of a is planted in parallel on the inner side surface of the closing member 2a, and these conductive needles are connected to an electric circuit of a signal engine such as a visual display. It is configured so that the energized state and phase sequence can be constantly monitored.

Description

[Detailed description of the device]

[0001]

[Technical Field of Device]

 The present invention relates to a phase detector for an electric motor, and more particularly to a phase detector for an electric motor 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 a 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 for 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, and 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 line of the cable, which is led out from the electric motor side and is connected to the power panel, is 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 to form a sandwich, so that the conductive needles that are inserted into the core wires of the cable dividing line are implanted in parallel on the inner surface of the closing member. The structure is such that these conduction needles are connected to the electric circuit of a predetermined signal engine.

[0005]

【Example】

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

Reference numeral 1 denotes a cable which is led out from an electric pump and is connected to a power supply panel, and 2 is a sandwiching body for sandwiching the vicinity of a leading end portion of the cable 1, which inner side surfaces face each other and can be freely attached and detached. The closing members 2a, ..., 2a to be closed are formed so that a required number of vertical grooves 3a, ..., 3a for sandwiching the dividing lines 1a, ..., 1a of the cable 1 are formed on the closing surface of the closing member 2a. 4 are installed in parallel on the inner side surface of the cable dividing wires 1a ... 1a to be inserted into the core wires of the cable dividing wires 1a ... 1a, and to the electric circuits of the signal lights 5a and 5b embedded in the member 2a. By connecting the above-mentioned conduction needles 4 ... 4, the connection state of the cable dividing lines 1a ... 1a via these conduction needles 4 ... 4, that is, the rotation state of the electric motor is set to the outside of the member 2a (outer peripheral surface a or Visible from the outer edge b) Is displayed. Reference numeral 6 denotes a closing mechanism attached to the outside of the closing members 2a ... 2a, for example, as shown in FIGS. 1 to 3, the locking claws 6a and 6b led out from one member 2a, It is locked in the engaging grooves 6'a, 6'a formed in the other opposing member 2a, or is sandwiched between the opposing two members 2a, 2a as shown in FIGS. The bodies 6b and 6b may be pressed together, or screws 6c and 6c may be screwed as shown in FIG. The point is that the closing surfaces of the closing members 2a, ..., 2a constituting the sandwiched body 2 may be fixed in the closed state. Reference numeral 7 denotes a cable insertion ring which is provided concentrically with the vertical groove 3a immediately below the vertical groove 3a at the center when the closing members 2a ... 2a are closed. It is an outlet for the ground line.

In order to attach the detection device of the present invention to an electric motor, the sheath of the cable 1 is inserted into the cable insertion ring 7 and the ground wire 1b is provided near the leading end of the cable 1 led out of the electric motor. 1a are led out from the ground wire outlet 3b so that the cable dividing lines 1a ... 1a are respectively sandwiched in the vertical grooves 3a ... 3a in parallel, and the closing surfaces of the closing members 2a. .. 1'a of the cable dividing lines 1a ... 1a led out from the vertical grooves 3a .. 3a are connected to the power board.

The lead wire is connected so that one signal lamp 5a is lit when the electric motor rotates in the forward direction, and the other signal lamp 5b is lit when the electric motor rotates in the reverse direction. For example, one signal lamp 5a is connected. Is displayed in blue and the other signal lamp 5b is displayed in red, the operating state of the electric motor can be easily discriminated visually. Also, if one lead wire is disconnected, both signal lights will be turned on at the same time.

[0009]

[Effect of device]

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

[Brief description of drawings]

FIG. 1 is a perspective view showing a divided state of a sandwich in an embodiment of the device of the present invention.

FIG. 2 is a plan view showing a divided state of a sandwich in the embodiment of FIG.

FIG. 3 is a perspective view showing a closed state of the sandwich in the embodiment of FIGS. 1 and 2.

FIG. 4 is a perspective view showing a divided state of the sandwiched body in another embodiment of the device of the present invention.

5 is a perspective view showing a divided state of the sandwiched body in the embodiment of FIG.

FIG. 6 is a perspective view showing a closed state of the sandwich in the embodiment of FIGS. 4 and 5.

FIG. 7 illustrates an electric circuit diagram in the device of the present invention.

[Explanation of symbols]

 1 Cable 1a Cable dividing line 2 Clamping body 2a Closing member 3a Vertical groove 4 Continuity needle

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[Procedure amendment]

[Submission date] July 19, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Figure 8

[Correction method] Added

[Correction content]

FIG. 8 illustrates an electric circuit diagram in the device of the present invention.

Claims (1)

[Scope of utility model registration request] A closing member (2 whose inner surfaces face each other and is closed)
a) ... The dividing line (1a) of the cable (1) led out from the electric motor side and connected to the power panel on the closing surface of (2a).
... (1a) is sandwiched in parallel so that the required number of vertical grooves (3
a) ... (3a) is formed to form a sandwiching body (2), and conductive needles (4) ... (4) are inserted into the core wires of the cable dividing wires (1a) ... (1a). Are planted in parallel on the inner side surface of the closing member (2a), and these conductive needles (4).
A phase detector for an electric motor, characterized in that (4) is connected to an electric circuit of a predetermined signal engine.