CN219456337U

CN219456337U - Automatic three-phase current unbalance detection and alarm device

Info

Publication number: CN219456337U
Application number: CN202223432624.XU
Authority: CN
Inventors: 陈项孟
Original assignee: Nanjing Sukai Power Engineering Co ltd
Current assignee: Nanjing Sukai Power Engineering Co ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-08-01
Anticipated expiration: 2032-12-21

Abstract

The utility model discloses an automatic three-phase current unbalance detection and alarm device, which comprises a shell, a plurality of bases fixed on the outer side surface of the shell, a current sensor arranged on the inner wall of the base, a connecting wire with one end fixed on the base and extending into the base to be connected with the current sensor, and an electric clamp arranged on the other end of the connecting wire, wherein the shell is used for installing other components and protecting electronic elements in an inner cavity from the influence of external factors, the base is used for installing the current sensor, the current sensor is used for monitoring the current on an electric wire through the connecting wire and the electric clamp and transmitting data to a detection module, the connecting wire is used for installing the electric clamp, and the electric clamp is used for clamping the current on a single-phase electric wire through facilitating the transmission of the current, so that the current on the phase electric wire is conveniently detected.

Description

Automatic three-phase current unbalance detection and alarm device

Technical Field

The utility model relates to the technical field of detection and alarm devices, in particular to an automatic detection and alarm device for unbalanced three-phase current.

Background

In the low-voltage distribution network, when three-phase voltage is symmetrical and three-phase loads are also symmetrical, three-phase currents are symmetrical, active power and reactive power of each phase load are not fully equal, phasor sum of the three-phase currents is not equal to zero, so that the three-phase load unbalance increases electric energy loss of a circuit, increases electric energy loss of a distribution transformer, distribution transformer output is reduced, zero-sequence currents are generated by the distribution transformer, safety operation of electric equipment is affected, motor efficiency is reduced, and when the three-phase currents are unbalanced, if workers cannot timely detect and find the unbalance, unbalance degree of the three-phase power supply is further increased, and damage is caused to electric equipment, so that a device capable of automatically detecting and alarming the three-phase current unbalance is urgently needed.

Disclosure of Invention

The present utility model aims to solve one of the technical problems existing in the prior art or related technologies.

The technical scheme adopted by the utility model is as follows: an automatic three-phase current imbalance detection and alarm device, comprising: the main body module comprises a shell, a plurality of bases fixed on the outer side face of the shell, a current sensor arranged on the inner wall of the base, a connecting wire with one end fixed on the base and extending into the base to be connected with the current sensor, and an electric clamp arranged on the other end of the connecting wire.

The detection module comprises a display screen which is arranged on the inner wall of the shell and extends out of the shell, an alarm assembly which is arranged on the outer side face of the shell, a processor which is arranged on the inner wall of the shell, a data storage unit which is arranged on one side of the processor, a first control unit which is arranged on one side of the data storage unit, a signal transmitting unit which is arranged on one side of the first control unit and a Wi F i module which is arranged on one side of the signal transmitting unit.

The remote alarm module comprises a sealing shell arranged on one side of the shell, an elastic belt arranged on the outer side face of the sealing shell, a second buzzer arranged on the inner wall of the sealing shell and extending out of the sealing shell, a second control unit arranged on the inner wall of the sealing shell, a signal receiving unit arranged on one side of the second control unit and a vibrator arranged on the inner wall of the sealing shell.

The present utility model may be further configured in a preferred example to: a plurality of mounting are installed to the bilateral symmetry of casing, the bottom gomphosis of casing has ring magnet, ring magnet's bottom face flushes with the bottom face of casing.

The present utility model may be further configured in a preferred example to: the alarm assembly comprises a stroboscopic lamp strip arranged at the top end of the shell and a first buzzer which is arranged on the inner side wall of the shell and extends out of the shell.

The present utility model may be further configured in a preferred example to: the output end of the current sensor is electrically connected with the input end of the processor through an electric wire, and the output end of the processor is electrically connected with the input end of the data storage unit, the input end of the first control unit, the input end of the signal transmitting unit and the input end of the WiF i module through electric wires.

The present utility model may be further configured in a preferred example to: the output end of the first control unit is electrically connected with the input end of the stroboscopic lamp strip and the input end of the first buzzer through wires.

The present utility model may be further configured in a preferred example to: the output end of the signal receiving unit is electrically connected with the input end of the second control unit through an electric wire.

The present utility model may be further configured in a preferred example to: the output end of the second control unit is electrically connected with the input end of the second buzzer and the input end of the vibrator through wires.

By adopting the technical scheme, the beneficial effects obtained by the utility model are as follows:

1. according to the utility model, the three bases are arranged on the outer side surface of the shell, the current sensor is arranged on the inner wall of each base, meanwhile, the connecting wire and the electric clamps are arranged on the bases, when the three electric clamps are used, the three electric clamps are respectively clamped and fixed on the corresponding single-phase electric wires, at the moment, the current sensor corresponding to each electric clamp can detect the current passing through the single-phase electric wires, the detection data are transmitted to the processor, the processor calculates the current data, when unbalance among three-phase currents is calculated, the alarm assembly is started through the control unit, and the alarm assembly is used for alarming nearby staff, so that the staff can conveniently and quickly process the situation in time, the automatic detection and alarm are avoided, the further increase of the unbalance among the three-phase currents is avoided, and the stability in the current transmission is effectively ensured.

2. According to the utility model, by arranging the remote alarm module, a worker can wear the sealing shell on the arm through the elastic belt when far away from the detection device, when three-phase electric unbalance is detected, the processor sends an alarm signal to the signal receiving unit through the signal transmitting unit, the signal receiving unit receives the alarm signal, and the second buzzer and the vibrator can be started through the control unit to remind the worker far away from the detection device through hearing and vision, so that the situation that the worker misses the alarm because the first buzzer and the stroboscopic lamp belt are not noticed when the worker is far away is effectively avoided, the situation that the worker can quickly and timely find the three-phase electric unbalance is further ensured, and the practical performance is improved.

Drawings

FIG. 1 is a schematic top view of the present utility model;

FIG. 2 is a schematic view of the bottom view of the present utility model;

FIG. 3 is a schematic cross-sectional view of a body module and a detection module of the present utility model;

FIG. 4 is a schematic diagram of a remote alarm module according to the present utility model;

FIG. 5 is a schematic cross-sectional view of a remote alarm module of the present utility model.

Reference numerals:

100. a main body module; 110. a housing; 111. a fixing member; 112. a ring magnet; 120. a base; 130. a current sensor; 140. a connecting wire; 150. an electrical clamp;

200. a detection module; 210. a display screen; 220. an alarm assembly; 221. a strobe light band; 222. a first buzzer; 230. a processor; 240. a data storage unit; 250. a first control unit; 260. a signal transmitting unit; 270. wi F i module;

300. a remote alarm module; 310. a sealed housing; 320. an elastic belt; 330. a second buzzer; 340. a second control unit; 350. a signal receiving unit; 360. a vibrator.

Detailed Description

The objects, technical solutions and advantages of the present utility model will become more apparent by the following detailed description of the present utility model with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

Some embodiments of the utility model are described below with reference to the accompanying drawings,

example 1:

referring to fig. 1-5, the present embodiment provides an automatic detecting and alarming device for three-phase current unbalance, which includes: a main body module 100, a detection module 200 and a remote alarm module 300,

the main body module 100 includes a housing 110, a plurality of bases 120 fixed on an outer side surface of the housing 110, a current sensor 130 mounted on an inner wall of the base 120, a connection wire 140 having one end fixed on the base 120 and extending into the base 120 to be connected with the current sensor 130, and an electrical clamp 150 mounted on the other end of the connection wire 140.

The shell 110 is used for installing other components and protecting electronic elements of an inner cavity from the influence of external factors, the base 120 is used for installing the current sensor 130, the current sensor 130 is used for monitoring the current on the electric wire through the connecting wire 140 and the electric clamp 150 and transmitting data to the detection module 200, the connecting wire 140 is used for installing the electric clamp 150, the electric clamp 150 is used for clamping on a single-phase electric wire through facilitating current transmission, and therefore the current on the phase electric wire is conveniently detected.

Further, a plurality of mounting 111 are installed to the bilateral symmetry of casing 110, make things convenient for casing 110 to fix through the bolt, and the gomphosis has ring magnet 112 in the bottom of casing 110, and ring magnet 112's bottom face flushes with casing 110's bottom face, makes casing 110 can adopt the mode of magnetism to inhale to fix, further has increased the convenience of installation.

The detection module 200 is mounted on the housing 110 for processing data detected by the current sensor 130, and includes a display screen 210 mounted on an inner wall of the housing 110 and extending out of the housing 110, an alarm assembly 220 mounted on an outer side of the housing 110, a processor 230 mounted on the inner wall of the housing 110, a data storage unit 240 disposed on a side of the processor 230, a first control unit 250 disposed on a side of the data storage unit 240, a signal transmitting unit 260 disposed on a side of the first control unit 250, and a WiFi module 270 disposed on a side of the signal transmitting unit 260.

The input end of the processor 230 is electrically connected with the output end of the current sensor 130 through a wire, and is used for receiving the currents on the single-phase wires detected by the three current sensors 130, performing processing calculation according to the current data, and judging whether the imbalance phenomenon exists between the three-phase currents.

The input end of the display screen 210 is electrically connected with the output end of the processor 230 through a wire, so as to display the current data detected by the three current sensors 130, thereby facilitating the timely understanding of the staff.

The alarm assembly 220 includes a strobe light band 221 installed at the top end of the housing 110 and a first buzzer 222 installed on the inner sidewall of the housing 110 and protruding out of the housing 110, the strobe light band 221 is used for flashing lights to remind nearby workers of paying attention through visual stimulus, and the first buzzer 222 is used for generating a buzzer to remind nearby workers of paying attention through auditory stimulus.

The input of the data storage unit 240 is electrically connected with the output of the processor 230 through a wire, and is used for storing the current data of the three-phase current, so that the follow-up calling and checking are facilitated, the output of the first control unit 250 is electrically connected with the input of the strobe light belt 221 and the input of the first buzzer 222 through a wire, and is used for controlling the starting and closing of the strobe light belt 221 and the first buzzer 222, the input of the signal transmitting unit 260 is electrically connected with the output of the processor 230 through a wire, and is used for transmitting an alarm signal to the remote alarm module 300, and the WiFi module 270 is used for transmitting the current data to the Internet, so that the three-phase current condition is conveniently checked by a staff remotely through a mobile terminal.

The remote alarm module 300 is used for alarming a worker when the worker is far away from the detecting device, and comprises a sealing shell 310 arranged at one side of the shell 110, an elastic belt 320 arranged on the outer side surface of the sealing shell 310, a second buzzer 330 arranged on the inner wall of the sealing shell 310 and extending out of the sealing shell 310, a second control unit 340 arranged on the inner wall of the sealing shell 310, a signal receiving unit 350 arranged at one side of the second control unit 340 and a vibrator 360 arranged on the inner wall of the sealing shell 310.

The seal housing 310 is used for installing other components, protecting the electronic components of the inner cavity, and the elastic band 320 is used for facilitating the staff to wear the seal housing 310 on the arm, so that the carrying convenience is increased.

The signal receiving unit 350 is configured to receive an alarm signal sent by the signal transmitting unit 260, and an output end of the second control unit 340 is electrically connected with an input end of the second buzzer 330 and an input end of the vibrator 360 through wires, and is configured to control the second buzzer 330 to start and close with the vibrator 360, the second buzzer 330 is configured to send out a beeping sound to alarm a worker, the vibrator 360 is composed of a micro motor and a cam, the micro motor is utilized to drive the cam to rotate at a high speed in the sealed housing 310, the cam moves circularly to generate centrifugal force, and a direction of the centrifugal force is continuously changed along with rotation of the cam, and meanwhile, the rapid variation of the centrifugal force also causes the whole micro motor to shake rapidly, so as to finally drive the sealed housing 310 to vibrate, and remind the worker through touch sense.

The working principle and the using flow of the utility model are as follows: when the three-phase electric clamp is used, the three electric clamps 150 are respectively clamped on opposite single-phase electric wires, at this time, the current sensor 130 detects the current in the opposite electric wires through the connecting wire 140 and the electric clamps 150, detected data are transmitted to the processor 230, the processor 230 calculates the current data transmitted by the three current sensors 130, when the three-phase current is found to be calm, the first buzzer 222 and the strobe light belt 221 are started through the first control unit 250, the short-distance staff is warned through auditory stimulus and visual stimulus, meanwhile, the processor 230 transmits the warning signal to the signal receiving unit 350 through the signal transmitting unit 260, after the signal receiving unit 350 receives the warning signal, the second buzzer 330 and the vibrator 360 are started through the second control unit 340, the staff far away from the detecting device is reminded through auditory stimulus and tactile stimulus, and the relevant staff can quickly find the three-phase current to be calm and process.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. An automatic three-phase current imbalance detection and alarm device, comprising: the remote alarm device is characterized in that the main body module (100), the detection module (200) and the remote alarm module (300) comprise a shell (110), a plurality of bases (120) fixed on the outer side surface of the shell (110), current sensors (130) arranged on the inner wall of the bases (120), connecting wires (140) with one ends fixed on the bases (120) and extending into the bases (120) to be connected with the current sensors (130), and electric clamps (150) arranged on the other ends of the connecting wires (140);

the detection module (200) comprises a display screen (210) which is arranged on the inner wall of the shell (110) and extends out of the shell (110), an alarm assembly (220) which is arranged on the outer side surface of the shell (110), a processor (230) which is arranged on the inner wall of the shell (110), a data storage unit (240) which is arranged on one side of the processor (230), a first control unit (250) which is arranged on one side of the data storage unit (240), a signal transmitting unit (260) which is arranged on one side of the first control unit (250) and a WiFi module (270) which is arranged on one side of the signal transmitting unit (260);

the remote alarm module (300) comprises a sealing shell (310) arranged on one side of the shell (110), an elastic belt (320) arranged on the outer side surface of the sealing shell (310), a second buzzer (330) arranged on the inner wall of the sealing shell (310) and extending out of the sealing shell (310), a second control unit (340) arranged on the inner wall of the sealing shell (310), a signal receiving unit (350) arranged on one side of the second control unit (340) and a vibrator (360) arranged on the inner wall of the sealing shell (310).

2. The automatic three-phase current unbalance detection and alarm device according to claim 1, wherein a plurality of fixing members (111) are symmetrically installed on two sides of the housing (110), a ring magnet (112) is embedded in the bottom end of the housing (110), and the bottom end surface of the ring magnet (112) is flush with the bottom end surface of the housing (110).

3. The automatic three-phase current unbalance detection and alarm device according to claim 1, wherein the alarm assembly (220) comprises a strobe light belt (221) mounted on the top end of the housing (110) and a first buzzer (222) mounted on the inner side wall of the housing (110) and protruding out of the housing (110).

4. The automatic three-phase current unbalance detection and alarm device according to claim 1, wherein the output end of the current sensor (130) is electrically connected to the input end of the processor (230) through a wire, and the output end of the processor (230) is electrically connected to the input end of the data storage unit (240), the input end of the first control unit (250), the input end of the signal transmitting unit (260) and the input end of the WiFi module (270) through wires.

5. The automatic three-phase current unbalance detection and alarm device according to claim 1, wherein the output end of the first control unit (250) is electrically connected to the input end of the strobe light strip (221) and the input end of the first buzzer (222) through electric wires.

6. The automatic three-phase current unbalance detection and alarm device according to claim 1, characterized in that the output of the signal receiving unit (350) is electrically connected to the input of the second control unit (340) by means of wires.

7. The automatic three-phase current unbalance detection and alarm device according to claim 1, wherein the output end of the second control unit (340) is electrically connected with the input end of the second buzzer (330) and the input end of the vibrator (360) through wires.