CN217305323U

CN217305323U - Portable cable phase recognizer

Info

Publication number: CN217305323U
Application number: CN202123159529.2U
Authority: CN
Inventors: 汪荣青; 钱正锋; 余发辉
Original assignee: Hangzhou Energy Storage Technology Co ltd; Zhejiang Institute of Mechanical and Electrical Engineering Co Ltd
Current assignee: Hangzhou Energy Storage Technology Co ltd; Zhejiang Institute of Mechanical and Electrical Engineering Co Ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-08-26
Anticipated expiration: 2031-12-15

Abstract

The utility model discloses a portable cable phase place recognizer, including cable phase place recognizer casing, signal transmission end, signal reception end, earthing terminal and signal display district have on the cable phase place recognizer casing, at cable both ends connecting cable phase place recognizer, the heart yearn of the one end of known cable phase sequence is connected with the signal transmission end and the earthing terminal of cable phase place recognizer respectively according to the phase sequence, the heart yearn of the other end of unknown cable phase sequence is connected with the signal reception end and the earthing terminal of cable phase place recognizer to judge the cable condition through the bright lamp condition in signal display district. The utility model discloses in, respectively place a cable phase place recognizer at the cable both ends, one as signal transmitter, another as signal receiver, at most only need two people, at least only need alone can accomplish cable identification work to can once discern the phase sequence of three cables simultaneously, need not many times commutation test, greatly reduce the activity duration.

Description

Portable cable phase recognizer

Technical Field

The utility model relates to a cable phase place discernment technical field especially relates to a portable cable phase place recognizer.

Background

At present, in a power distribution network construction site, identification of a phase of a pre-buried cable is generally carried out in a multimeter mode, and the identification steps are as follows:

generally, three-person join operation is needed, wherein one person is positioned at the end A of the cable and is used for short-circuiting the core wire and the grounding end of the current tested cable, the other two persons are positioned at the other end B of the cable, one person uses a multimeter stylus to contact the core wire and the grounding end of the cable to be tested, if the multimeter sends out a buzzing sound, the current tested cable is consistent with the opposite phase sequence, at the moment, the other person informs the personnel at the end A of the cable of the telephone to inform the phase position and inform the phase-change test, and then the personnel at the end B of the cable continue the test.

The above test steps are repeatedly operated for three times to judge the phase sequence of the three-phase cable, although the test method is simple, only one multimeter is needed for testing, the defect is obvious, namely, a plurality of persons are needed for cooperation to complete the test, and if the cable has a short circuit or a broken circuit fault, the method needs to repeatedly test to determine which phase of cable has a corresponding fault, and has certain electric power basic requirements for test personnel.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the technical problems mentioned in the background art, a portable cable phase identifier is provided.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides a portable cable phase place recognizer, includes cable phase place recognizer casing, have signal transmission end, signal receiving terminal, earthing terminal and signal display district on the cable phase place recognizer casing, cable phase place recognizer is connected at cable A, B both ends, the heart yearn of the A end of known cable phase sequence is connected with the signal transmission end and the earthing terminal of A end cable phase place recognizer respectively according to the phase sequence, the heart yearn of the B end of unknown cable phase sequence is connected with the signal receiving terminal and the earthing terminal of B end cable phase place recognizer, and through the bright light condition in signal display district, judge whether cable phase sequence and current cable have the condition of opening a circuit or short circuit.

As a further description of the above technical solution:

the signal transmitting terminal comprises three transmitting terminals of an A phase, a B phase and a C phase and is used for transmitting TTL signals with different frequencies, the signal receiving terminal is used for receiving the TTL signals and is divided into three paths of identification, the grounding terminal is used for grounding during identification, and the signal display area is used for displaying the phase of a receiving port of the current signal receiving terminal.

As a further description of the above technical solution:

the signal display area comprises yellow, green and red LED lamp beads, wherein yellow is an A phase, green is a B phase, and red is a C phase.

As a further description of the above technical solution:

the display sequence of the LED lamp beads is yellow green red, the phase sequence of the cable is A phase, B phase and C phase, and if at least one LED lamp bead is not bright, the current cable is broken or short-circuited.

As a further description of the above technical solution:

still include the battery compartment, the battery compartment is used for placing the battery, for cable phase place recognizer power supply.

As a further description of the above technical solution:

the power switch is used for switching on and off the cable phase identifier.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that: when identifying the cable, firstly, placing a cable phase identifier at the end A of the known cable phase sequence, respectively connecting the phase A, the phase B and the phase C of the signal transmitting end according to the sequence of the end A of the cable, grounding the grounding end, pressing down the power switch, then sending three different TTL signals by the cable phase identifier at the end A, then placing another cable phase identifier at the end B of the unknown cable phase sequence, connecting the four wires of the signal receiving end and the grounding end to the three phases of the end B and grounding, pressing down the power switch, at the moment, identifying the TTL signals which are started to be received by the cable phase identifier at the end B, outputting and displaying the cable phase sequence displayed by the current wiring mode by the color of the LED lamp beads, if the display sequence of the LED lamp beads in the signal display area is yellow-green-red, the phase sequence is the phase A, the phase C, the phase A, the phase and the B phase, if a certain path of LED lamp beads are not bright, the situation that the current path of cable is likely to have broken circuit or broken circuit is indicated, further investigation needs to be conducted, the situation that multiple persons need to participate in cable identification on site and multiple phase change operations need to be conducted is solved, only one cable phase identifier needs to be placed at each of two ends of the cable, one cable phase identifier serves as a signal transmitter, the other cable phase identifier serves as a signal receiver, at most two persons are needed, the cable identification work can be completed by only one person at least, the phase sequence of three cables can be identified at one time, multiple phase change tests are not needed, and the operation time is greatly shortened.

Drawings

Fig. 1 is a schematic diagram illustrating a connection between a portable cable phase identifier and a cable according to an embodiment of the present invention;

fig. 2 is a schematic front view illustrating a portable cable phase identifier according to an embodiment of the present invention.

Illustration of the drawings:

1. a cable phase identifier housing; 2. a signal transmitting terminal; 3. a signal receiving end; 4. a ground terminal; 5. a signal display area; 6. a battery compartment; 7. and a power switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: a portable cable phase recognizer comprises a cable phase recognizer shell 1, wherein the cable phase recognizer shell 1 is used for placing a whole circuit board, a wiring terminal, signal display and all accessory devices, a signal transmitting end 2, a signal receiving end 3, a grounding end 4 and a signal display area 5 are arranged on the cable phase recognizer shell 1, the portable cable phase recognizer also comprises a battery compartment 6, the battery compartment 6 is used for placing a 9V battery to supply power for the cable phase recognizer, and the portable cable phase recognizer also comprises a power switch 7 which is used for starting and stopping the cable phase recognizer;

the signal transmitting terminal 2 comprises three transmitting terminals of an A phase, a B phase and a C phase and is used for transmitting TTL signals with different frequencies so as to perform subsequent phase identification, the signal receiving terminal 3 is used for receiving the TTL signals and is divided into three paths of identification, no specific requirement exists in sequence, the grounding terminal 4 is used for grounding during identification, the signal display area 5 is used for displaying the phase of a receiving port of the current signal receiving terminal 3, the signal display area 5 comprises LED lamp beads of three colors of yellow, green and red, the yellow is the A phase, the green is the B phase, and the red is the C phase;

the two ends of the cable A, B are connected with cable phase identifiers, the core wire of the end A of the known cable phase sequence is respectively connected with the signal transmitting end 2 and the grounding end 4 of the end A cable phase identifier according to the phase sequence, the core wire of the end B of the unknown cable phase sequence is connected with the signal receiving end 3 and the grounding end 4 of the end B cable phase identifier, and whether the cable phase sequence and the current cable have the condition of open circuit or short circuit is judged through the lighting condition of the signal display area 5, further checking is needed, in the using process, the two cable phase identifiers need to work simultaneously, but the two cable phase identifiers can work as signal transmitting and signal receiving without primary and secondary functions;

the display sequence of the LED lamp beads is yellow, green and red, the phase sequence of the cable is an A phase, a B phase and a C phase, at least one LED lamp bead is not bright, the current cable is broken or short-circuited, the corresponding LED lamp bead is not bright, the current cable is broken or short-circuited, and the specific phase sequence is as shown in the following table 1:

TABLE 1

LED Lamp bead display sequence	Phase sequence of cable
		Yellow, green and red	Phase A, phase B, phase C
Yellow, red and green	Phase A, phase C, phase B
		Green, yellow and red	Phase B, phase A, phase C
Green, red and yellow	Phase B, phase C, phase A
		Red, yellow and green	Phase C, phase A, phase B
Red, green and yellow	Phase C, phase B, phase A
		At least one LED lamp bead is not bright	The cable having open or short circuit fault

The device solves the problems that a plurality of persons need to participate in cable identification and a plurality of commutation operations are needed on site, only one cable phase identifier needs to be placed at each of two ends of the cable, one cable phase identifier serves as a signal transmitter, the other cable phase identifier serves as a signal receiver, at most two persons are needed, the cable identification work can be completed at least by one person, the phase sequence of three cables can be identified at one time, a plurality of commutation tests are not needed, and the operation time is greatly shortened.

The working principle is as follows: when the cable identification is carried out, firstly, a cable phase identifier is placed at the end A of the known cable phase sequence, the end A of the cable is respectively connected with the phase A, the phase B and the phase C of the signal transmitting end 2 according to the sequence of the end A of the cable, the grounding end 4 is grounded, the power switch 7 is pressed, at the moment, the end A of the cable phase identifier sends three different TTL signals, then, another cable phase identifier is placed at the end B of the unknown cable phase sequence, four connecting wires of the signal receiving end 3 and the grounding end 4 are connected to the three phases of the end B and grounded, the power switch 7 is pressed down, at the moment, the end B of the cable phase identifier identifies the TTL signals which are started to be received, the cable phase sequence displayed by the current connecting mode is output and displayed by the color of the LED lamp beads, if the display sequence of the LED lamp beads of the signal display area 5 is yellow-green-red, the phase sequence is the phase A, the phase C phase of the phase A, and the display sequence is red-yellow-green, and if the LED lamp beads on a certain path are not bright, the situation that the current path of cable is possibly broken or disconnected is indicated, and further investigation is needed.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a portable cable phase place recognizer, including cable phase place recognizer casing (1), characterized in that, cable phase place recognizer casing (1) is last to have signal transmission end (2), signal receiving terminal (3), earthing terminal (4) and signal display area (5), connect cable phase place recognizer at cable A, B both ends, the heart yearn of the A end of known cable phase sequence is connected with signal transmission end (2) and earthing terminal (4) of A end cable phase place recognizer respectively according to the phase sequence, the heart yearn of the B end of unknown cable phase sequence is connected with signal receiving terminal (3) and earthing terminal (4) of B cable phase place recognizer, and through signal display area (5) bright light condition, judge whether cable phase sequence and present cable have the condition of breaking or short circuit.

2. The portable cable phase identifier as claimed in claim 1, wherein the signal transmitter (2) comprises three transmitters of a phase, B phase and C phase for transmitting TTL signals with different frequencies, the signal receiver (3) is used for TTL signal reception and is divided into three paths for identification, the ground terminal (4) is used for grounding during identification, and the signal display area (5) is used for displaying the phase of the current receiving port of the signal receiver (3).

3. The portable cable phase identifier as claimed in claim 2, wherein the signal display area (5) comprises LED beads of three colors of yellow, green and red, yellow being phase a, green being phase B and red being phase C.

4. The portable cable phase identifier of claim 3, wherein the LED lamp beads display yellow green red in sequence, the cable phase sequence is A phase, B phase and C phase, and at least one of the LED lamp beads is not bright, which indicates that there is a current cable open circuit or short circuit condition.

5. A portable cable phase identifier according to claim 1, further comprising a battery compartment (6), wherein said battery compartment (6) is used for placing a battery to supply power to the cable phase identifier.

6. A portable cable phase identifier according to claim 1, characterized in that it further comprises a power switch (7) for switching the cable phase identifier on and off.