CN219997188U

CN219997188U - Simple clock type cable nuclear phase meter

Info

Publication number: CN219997188U
Application number: CN202320789372.1U
Authority: CN
Inventors: 万建雄; 李群; 陈勇; 翁炜; 余强; 卢婕姝; 胡昌雄; 刘捷
Original assignee: Hubei Jiji Power Group Co ltd Wuchang Branch
Current assignee: Hubei Jiji Power Group Co ltd Wuchang Branch
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-11-10
Anticipated expiration: 2033-04-11

Abstract

A simple clock type cable nuclear phase meter comprises a shell and a diode connecting wire, wherein a first poking piece, a second poking piece and a display LED lamp are arranged on the shell, the end parts of the first poking piece and the second poking piece are rotatably connected with a central rotating shaft, and a direct current power supply and a current limiting resistor are arranged on the first poking piece; the shell is provided with a plurality of contact points and a plurality of contact pins, and the first poking piece and the second poking piece can be connected with the plurality of contact points. The utility model can rapidly and accurately detect the phase of each cable, well solves the technical problems of complex operation, time and labor waste in manual phase inspection, and improves the working efficiency.

Description

Simple clock type cable nuclear phase meter

Technical Field

The utility model belongs to the technical field of cable nuclear phases, and particularly relates to a simple clock type cable nuclear phase meter.

Background

When the high-voltage cable is in a nuclear phase state, serious power faults can occur if the phase sequence is not opposite. The existing cable core phase mainly comprises two methods: one is a dry battery and voltmeter method, wherein the first end A, B is connected with the direct current voltage of the dry battery, the second end determines A, B, C phases through the reading of the voltmeter, and multiple measurements are needed; the other is a method of measuring conduction to the ground by a universal meter and a shaking insulation method, after a certain item of the first end is grounded, the second end is used for measuring whether the first end is conducted to the ground (insulated) or not by the universal meter, and communication (telephone) is needed to be arranged at the first end and the second end in the process. The specific operation of the existing cable nuclear phase (checking number) work is as follows: firstly, all core wires at two ends of the cable are stripped to expose copper wires. At one end of the cable, a worker short-circuits the two core wires, and then tells the other end of the cable the wire number selected by the worker through an interphone; after the other end worker receives the signal, the multimeter is driven to the short-circuit buzzer, and two meter pens are used for contacting the core wires marked with the two wire numbers, and if the signal is on, the interphone is used for telling the other party that the wire number is correct and the wire is replaced. After measuring both wires, the other wires are measured in the same manner. The quality of the cables is quite different, when many new cables are not used, the condition of middle short circuit and short circuit between wires occurs, and the measurement and confirmation of the universal meter are needed in many cases. This measurement method is very cumbersome to operate and is prone to errors. Although the inspection method by means of the nuclear phase meter and the universal meter can reduce the workload, the cable must be grounded, the resistance of each cable is read out by the universal meter, the method is not concise enough, and when the underground passage is communicated, signals can be influenced, thereby influencing the working efficiency and quality.

On the other hand, portability of the device needs to be considered in the nuclear phase process. In order to better solve these problems, more advanced inspection methods and apparatuses are required to perform the phase inspection work of the power cable more conveniently and efficiently.

Disclosure of Invention

In view of the technical problems existing in the background technology, the simple clock type cable nuclear phase meter provided by the utility model can rapidly and accurately detect the phase of each cable, well solves the technical problems of complex operation, time and labor waste existing in manual phase inspection, and improves the working efficiency.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a simple clock type cable nuclear phase meter comprises a shell and a diode connecting wire, wherein a first poking piece, a second poking piece and a display LED lamp are arranged on the shell, the end parts of the first poking piece and the second poking piece are rotatably connected with a central rotating shaft, and a direct current power supply and a current limiting resistor are arranged on the first poking piece; the shell is provided with a plurality of contact points and a plurality of contact pins, and the first poking piece and the second poking piece can be connected with the plurality of contact points.

Further, the number of the contact points and the contact pins is three, the three contact points are a contact point a2, a contact point b2 and a contact point c2 respectively, the three contact pins are a contact pin a1, a contact pin b1 and a contact pin c1 respectively, the contact pin a1 is connected with the contact point a2 through a wire, the contact pin b1 is connected with the contact point b2 through a wire, and the contact pin c1 is connected with the contact point c2 through a wire.

Further, the lengths of the first shifting piece and the second shifting piece are the same, and the contact a2, the contact b2 and the contact c2 are positioned on a circle taking the central rotating shaft as the center of a circle and the length of the first shifting piece as the radius.

The following beneficial effects can be achieved in this patent:

the utility model can rapidly and accurately detect the phase of each cable, well solves the technical problems of complex operation, time and labor waste in manual phase inspection, and improves the working efficiency.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a schematic diagram of the operation of the present utility model;

fig. 2 is a second schematic diagram of the operation of the present utility model.

In the figure: the device comprises a shell 1, a first poking piece 21, a second poking piece 22 and a diode connecting wire 3.

Detailed Description

Example 1:

the preferred scheme is as shown in fig. 1-2, a simple clock type cable nuclear phase meter comprises a shell 1 and a diode connecting wire 3, wherein a first poking piece 21, a second poking piece 22 and a display LED lamp are arranged on the shell 1, the end parts of the first poking piece 21 and the second poking piece 22 are rotatably connected with a central rotating shaft, and a direct-current power supply and a current-limiting resistor are arranged on the first poking piece 21; the housing 1 is provided with a plurality of contact points and a plurality of contact pins, and the first pulling piece 21 and the second pulling piece 22 can be connected with the plurality of contact points. Specifically, the number of the contact points and the contact pins is three, the three contact points are a contact point a2, a contact point b2 and a contact point c2 respectively, the three contact pins are a contact pin a1, a contact pin b1 and a contact pin c1 respectively, the contact pin a1 is connected with the contact point a2 through a wire, the contact pin b1 is connected with the contact point b2 through a wire, and the contact pin c1 is connected with the contact point c2 through a wire. Pin a1, pin b1 and pin c1 are spliced with A, B, C three-phase cables, respectively. The first pulling piece 21 and the second pulling piece 22 are matched with each other, are respectively connected with the contacts a2, b2 and c2, and are used for judging the cable end of the nuclear phase.

A. B, C the three-phase cable has one end known and the other end unknown, which requires a core phase. The diode connection 3 is intended to be connected to the a-phase and the B-phase of the known end of the three-phase cable and current can only flow from B to a. The voltage of the direct current power supply is 3V, and the size of the current limiting resistor is 150Ω.

Further, the lengths of the first pulling piece 21 and the second pulling piece 22 are the same, and the contact a2, the contact b2 and the contact c2 are positioned on a circle taking the center rotating shaft as the center and the length of the first pulling piece 21 as the radius.

The operation method comprises the following steps:

the first step: before using the simple knob type high-voltage cable nuclear phase meter, the A-phase cable and the B-phase cable are connected by a light emitting diode in advance, and a light emitting diode passage is arranged to flow from the B-phase to the A-phase;

and a second step of: as shown in fig. 1, the other ends of the A, B, C three-phase cables are respectively connected with three contact pins;

and a third step of: the first shifting piece 21 and the second shifting piece 22 are rotated to different angles, so that 3 cables are connected in pairs through an internal circuit of the device, and the working state of the light emitting diode is observed when the knob is rotated to 6 different angles;

fourth step: as shown in fig. 2, only 1 angle makes the led light, 2 cables with unknown phases connected by the angle can be judged as a phase a and a phase B, wherein the direction of the knob dc power supply current flowing into the contact points to be referred to as a phase B cable, and the other 1 cable is referred to as a phase a cable; the display LED lamp has the following functions: when the measuring loop is conducted, the shell LED lamp is lighted, and the display LED lamp is connected in series with the direct current power supply.

Fifth step: from this point on, there are two 3 cables of unknown phase identified as A, B two phases, and the last 1 unknown cable is the C-phase cable.

The above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the scope of the present utility model should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.

Claims

1. A simple clock type cable nuclear phase meter, which is characterized in that: the LED lamp comprises a shell (1) and a diode connecting wire (3), wherein a first poking piece (21), a second poking piece (22) and a display LED lamp are arranged on the shell (1), the end parts of the first poking piece (21) and the second poking piece (22) are rotatably connected with a central rotating shaft, and a direct-current power supply and a current-limiting resistor are arranged on the first poking piece (21); the shell (1) is provided with a plurality of contact points and a plurality of contact pins, and the first poking piece (21) and the second poking piece (22) can be connected with the plurality of contact points.

2. The simple horological cable nuclear phase meter of claim 1 wherein: the number of the contact points and the contact pins is three, the three contact points are a contact a2, a contact b2 and a contact c2 respectively, the three contact pins are a contact pin a1, a contact pin b1 and a contact pin c1 respectively, the contact pin a1 is connected with the contact a2 through a wire, the contact pin b1 is connected with the contact b2 through a wire, and the contact pin c1 is connected with the contact c2 through a wire.

3. The simple horological cable nuclear phase meter of claim 2 wherein: the lengths of the first poking piece (21) and the second poking piece (22) are the same, and the contact a2, the contact b2 and the contact c2 are positioned on a circle taking the central rotating shaft as the center of a circle and the length of the first poking piece (21) as the radius.