CN217642699U

CN217642699U - Intelligent AC/DC motor protector

Info

Publication number: CN217642699U
Application number: CN202220996112.7U
Authority: CN
Inventors: 宾壮波; 陈曦; 邹俊涛
Original assignee: Hunan Gucheng Electric Technology Co ltd
Current assignee: Hunan Gucheng Electric Technology Co ltd
Priority date: 2022-04-24
Filing date: 2022-04-24
Publication date: 2022-10-21
Anticipated expiration: 2032-04-24

Abstract

The utility model discloses an intelligent AC/DC motor protector, including the control box body and set up in two hall current sensor of control box body one side, a plurality of wiring chamber, a plurality of have not been seted up to control box body both sides wiring intracavity portion all is provided with binding post, hall current sensor includes the sensor body and sets up in the winding displacement seat of sensor body bottom one side. This kind of intelligent AC/DC motor protector detects the three-phase current of motor through adopting two hall current sensor, and the third phase current is through vector calculation synthesis, and two hall current sensor all are 50KHZ sampling frequency current sensor, far above the 200HZ of traditional motor operating frequency, consequently is suitable for the motor current sampling and the protection of 0-200HZ operating frequency, and is applicable to the control and each item protection of converter driven motor and DC motor to the cost is also not high.

Description

Intelligent AC/DC motor protector

Technical Field

The utility model relates to a protector technical field specifically is intelligent AC/DC motor protector.

Background

In order to make the operation of the motor more stable and have a longer service life, a motor protector needs to be additionally arranged to protect the operation of the motor.

At present, all universal motor protectors adopt a power frequency 50HZ current transformer, so that the universal motor protectors can only be used for motor operation protection of a fixed power frequency 50HZ and cannot be used for motor operation protection of a variable frequency power supply of a non-50 HZ, and the universal motor protectors are low in applicability to motor current sampling and protection of 0-200HZ operation frequency.

Therefore, we improve the above and propose an intelligent AC/DC motor protector.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model discloses intelligent AC/DC motor protector, include the control box body and set up in two hall current sensor of control box body one side, two hall current sensor structure is the same, control box body top is provided with the display screen, display screen one side is provided with a plurality of current signal pilot lamp, the display screen opposite side is provided with a plurality of alarm signal pilot lamp, just the display screen opposite side is provided with a plurality of control button, a plurality of wiring chamber, a plurality of have not been seted up to control box body both sides wiring intracavity portion all is provided with binding post, the binding post top is provided with the screw thread drift pin, screw thread drift pin bottom run through in wiring intracavity portion and with the inside threaded connection of binding post, hall current sensor includes the sensor body and sets up in the winding displacement seat of sensor body bottom one side.

As the utility model discloses an optimized technical scheme, hall current sensor is 50KHZ sampling frequency current sensor.

As the utility model discloses a preferred technical scheme, winding displacement seat one side joint has the winding displacement to connect, the winding displacement seat with the winding displacement connects inside four contact jaws that are provided with respectively, and is located inside four of winding displacement seat the contact jaw with be located inside four of winding displacement joint the contact jaw contacts, corresponds four the contact jaw four connecting wires of winding displacement joint one side fixedly connected with.

As the utility model discloses a preferred technical scheme, a plurality of binding post includes a set of sensor wiring end one, a set of sensor wiring end two, a set of power wiring end, a set of current detection end one and a set of current detection end two, and is a set of sensor wiring end one includes V + end, V-end, OV end and OUT end, and is a set of sensor wiring end one and a set of sensor wiring end two inner structure are the same, are located two the winding displacement connects four of one side the connecting wire other end is respectively with a set of sensor wiring end one and a set of sensor wiring end two are inside to be connected.

As the preferred technical scheme of the utility model, a set of power connection end includes P end and N end.

As the preferred technical scheme of the utility model, it is a set of current detection end one includes I + end, I-end, A + end and B-end, and is a set of current detection end two includes BJ1 end, BJ2 end and BJ3 end.

The utility model has the advantages that:

1. the intelligent AC/DC motor protector can effectively protect AC/DC motors driven by various frequency converters and can also be used for current monitoring protection of high-frequency heat treatment equipment, and because the protector is a high-speed sampling current signal (up to 50 KHZ), the protector can also analyze the higher harmonic component value of a current waveform, thereby facilitating the management of users on the quality of a power grid;

2. this kind of intelligent AC/DC motor protector detects the three-phase current of motor through adopting two hall current sensor, and the third phase current is through vector calculation synthesis, and two hall current sensor all are 50KHZ sampling frequency current sensor, far above the 200HZ of traditional motor operating frequency, consequently is suitable for the motor current sampling and the protection of 0-200HZ operating frequency, and is applicable to the control and each item protection of converter driven motor and DC motor to the cost is also not high.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic diagram of the installation of the control box body and the hall current sensor of the intelligent ac/dc motor protector of the present invention;

fig. 2 is an enlarged schematic view of a hall current sensor of the intelligent ac/dc motor protector;

fig. 3 is a schematic diagram of the circuit connection of the hall current sensor of the intelligent ac/dc motor protector.

In the figure: 1. a control box body; 2. a Hall current sensor; 3. a display screen; 4. a current signal indicator light; 5. an alarm signal indicator light; 6. a control button; 7. a wiring terminal; 701. a first sensor terminal; 702. a second sensor terminal; 703. a power supply terminal; 704. a first current detection end; 705. a second current detection terminal; 8. threading the screw; 9. a sensor body; 10. a wire arranging seat; 11. a flat cable connector; 12. and connecting the wires.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

The embodiment is as follows: as shown in fig. 1-3, the utility model discloses intelligent AC/DC motor protector, including control box body 1 and set up in two hall current sensor 2 of control box body 1 one side, two hall current sensor 2 structures are the same, control box body 1 top is provided with

display screen

3, 3 one side of display screen is provided with a plurality of current

signal pilot lamp

4, 3 opposite sides of display screen are provided with a plurality of alarm

signal pilot lamp

5, and 3 opposite sides of display screen are provided with a plurality of control button 6, a plurality of wiring chamber has not been seted up to control box body 1 both sides, a plurality of wiring intracavity portion all is provided with binding post 7, binding post 7 top is provided with screw thread through-nail 8, screw thread through-nail 8 bottom run through in wiring intracavity portion and with binding post 7 internal thread connection, hall current sensor 2 includes sensor body 9 and sets up the winding displacement seat 10 in sensor body 9 bottom one side.

Wherein, the Hall current sensor 2 is a 50KHZ sampling frequency current sensor;

the Hall current sensor 2 is a 50KHZ sampling frequency current sensor which is far higher than the 200HZ of the traditional motor running frequency, so that the Hall current sensor is suitable for the motor current sampling and protection of the 0-200HZ running frequency, is suitable for the monitoring and various protections of a motor driven by a frequency converter and a direct current motor, and has low cost.

The flat cable connector comprises a flat cable base 10, a flat cable connector 11, four contact ends, four connecting wires 12 and a flat cable connector 11, wherein the flat cable connector 11 is clamped on one side of the flat cable base 10, the four contact ends are arranged in the flat cable base 10 and the flat cable connector 11 respectively, the four contact ends in the flat cable base 10 are in contact with the four contact ends in the flat cable connector 11, and one side of the flat cable connector 11 corresponding to the four contact ends is fixedly connected with the four connecting wires 12;

through the winding displacement seat 10 and the winding displacement joint 11 that set up, conveniently connect control box body 1 and two hall current sensor 2 smoothly through connecting wire 12, improve circuit connection's convenience, make things convenient for the dismouting.

The wiring terminals 7 comprise a group of first sensor terminals 701, a group of second sensor terminals 702, a group of power terminals 703, a group of first current detection terminals 704 and a group of second current detection terminals 705, the group of first sensor terminals 701 comprises a V + end, a V-end, an OV end and an OUT end, the internal structures of the group of first sensor terminals 701 and the group of second sensor terminals 702 are the same, and the other ends of four connecting wires 12 positioned on one sides of the two flat cable connectors 11 are respectively connected with the insides of the group of first sensor terminals 701 and the group of second sensor terminals 702;

through a set of sensor terminal 701 and a set of sensor terminal two 702 that set up, can connect two hall current sensor 2 respectively, realize supplying power or collecting the current signal that two hall current sensor 2 gathered for two hall current sensor 2, conveniently monitor through control box body 1.

Wherein the set of power terminals 703 includes a P terminal and an N terminal.

The power cord is conveniently connected, and the control box body 1 is provided with electric power support.

Wherein, the first set of current detection terminals 704 comprises an I + terminal, an I-terminal, an A + terminal and a B-terminal, and the second set of current detection terminals 705 comprises a BJ1 terminal, a BJ2 terminal and a BJ3 terminal;

through a set of current detection end one 704 and a set of current detection end two 705 that set up, conveniently when the installation be connected with the motor, the running current index of convenient examination monitoring motor to carry out analysis monitoring through control box body 1.

The working principle is as follows: during the use, install this control box body 1 in the automatically controlled cabinet at first, or other convenient places, then select two hall current sensor 2 of supporting use, and two hall current sensor 2 all are 50KHZ sampling frequency current sensor, during the installation, two hall current sensor 2 can be installed the centre gripping on the supply cable of motor or equipment on the scene, two hall current sensor 2's two winding displacement joint 11's four connecting wire 12 other ends are connected with a set of sensor wiring end 701 of control box body 1 and a set of sensor wiring end two 702 insidely respectively, and screw thread drift bolt 8 is screwed up, during operation, two hall current sensor 2 real-time supervision motor's current signal or the higher harmonic weight numerical value of current waveform, thereby convenience of customers is to the management of electric wire netting quality.

Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Intelligent AC/DC motor protector, including control box body (1) and set up in two hall current sensor (2) of control box body (1) one side, its characterized in that, two hall current sensor (2) structure is the same, control box body (1) top is provided with display screen (3), display screen (3) one side is provided with a plurality of current signal pilot lamp (4), display screen (3) opposite side is provided with a plurality of alarm signal pilot lamp (5), just display screen (3) opposite side is provided with a plurality of control button (6), a plurality of wiring chamber, a plurality of have not been seted up to control box body (1) both sides wiring intracavity portion all is provided with binding post (7), binding post (7) top is provided with screw thread through nail (8), screw thread through nail (8) bottom run through in wiring intracavity portion and with binding post (7) inside threaded connection, hall current sensor (2) include hall sensor body (9) and set up in winding displacement seat (10) of sensor body (9) bottom one side.

2. An intelligent ac-dc motor protector according to claim 1, characterized in that the hall current sensor (2) is a 50KHZ sampling frequency current sensor.

3. The protector for the intelligent ac/dc motor according to claim 1, wherein a flat cable connector (11) is fastened to one side of the flat cable seat (10), four contact terminals are respectively disposed in the flat cable seat (10) and the flat cable connector (11), the four contact terminals disposed in the flat cable seat (10) are in contact with the four contact terminals disposed in the flat cable connector (11), and four connecting wires (12) are fixedly connected to one side of the flat cable connector (11) corresponding to the four contact terminals.

4. The intelligent AC/DC motor protector as claimed in claim 3, wherein the plurality of terminals (7) comprise a group of first sensor terminals (701), a group of second sensor terminals (702), a group of power terminals (703), a group of first current detection terminals (704) and a group of second current detection terminals (705), wherein a group of first sensor terminals (701) comprises a V + terminal, a V-terminal, an OV terminal and an OUT terminal, a group of first sensor terminals (701) and a group of second sensor terminals (702) have the same internal structure, and the other ends of the four connecting wires (12) on one side of the two flat cable connectors (11) are respectively connected with the internal parts of the group of first sensor terminals (701) and the group of second sensor terminals (702).

5. The intelligent ac/dc motor protector of claim 4, wherein a set of said power terminals (703) comprises a P terminal and an N terminal.

6. The protector according to claim 4, wherein one set of the first current detecting terminals (704) includes terminals I +, I-, A + and B-, and one set of the second current detecting terminals (705) includes terminals BJ1, BJ2 and BJ 3.