CN209963744U - Three-phase voltage protection system - Google Patents

Three-phase voltage protection system Download PDF

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Publication number
CN209963744U
CN209963744U CN201921165252.4U CN201921165252U CN209963744U CN 209963744 U CN209963744 U CN 209963744U CN 201921165252 U CN201921165252 U CN 201921165252U CN 209963744 U CN209963744 U CN 209963744U
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CN
China
Prior art keywords
circuit
frame
limiting
power supply
phase voltage
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Expired - Fee Related
Application number
CN201921165252.4U
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Chinese (zh)
Inventor
王魏
郑定隆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yueqing Normak Technology Co Ltd
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Yueqing Normak Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to CN201921165252.4U priority Critical patent/CN209963744U/en
Application granted granted Critical
Publication of CN209963744U publication Critical patent/CN209963744U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a three-phase voltage protection system, which comprises a processor, a power circuit, a three-phase voltage sampling circuit and a tripping device, wherein the output ends of the three-phase voltage sampling circuit and the power circuit are respectively connected with the input end of the processor; the tripping device comprises a rack, wherein a jumping frame for driving the tripping piece to trip, a limiting piece, an electromagnetic assembly for driving the limiting piece to move back and forth and a circuit board for supplying power to the electromagnetic assembly are arranged on the rack, and the circuit board is connected with the output end of the processor; gather voltage signal through three-phase voltage sampling circuit, no matter any one of them looks electric voltage risees, reduces, lack looks and can all sample correctly timing to react to this trouble through trip gear, avoid having a looks electricity not by the sampling, will cause the operating equipment unusual, damage, cause the problem of the loss of unable estimate even, contact and contact separation realize self-protection to trip gear simultaneously, improve life.

Description

Three-phase voltage protection system
Technical Field
The utility model relates to a release field, more specifically says that it relates to a three-phase voltage protection system.
Background
The over-voltage and under-voltage protection modules on the market have either over-voltage protection or under-voltage protection, are single-phase sampling and cannot cope with the complex working condition of the current industrial three-phase power; because only single-phase electricity is sampled, if the voltage of one phase of electricity is increased, reduced and phase-lacking, and the phase of electricity is not sampled, the working equipment is abnormal and damaged, and even inestimable loss is caused.
SUMMERY OF THE UTILITY MODEL
To the deficiency that prior art exists, the utility model aims to provide a self-protection release.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a three-phase voltage protection system comprises a processor, a power supply circuit, a three-phase voltage sampling circuit and a tripping device, wherein the output ends of the three-phase voltage sampling circuit and the power supply circuit are respectively connected with the input end of the processor;
the tripping device comprises a frame, wherein a jumping frame for driving the tripping piece to perform tripping action, a limiting piece, a circuit board for driving the limiting piece to move the electromagnetic assembly back and forth and for supplying power to the electromagnetic assembly are arranged on the frame, and the circuit board is connected with the output end of the processor
The electromagnetic assembly comprises a coil framework wound with coils, a linkage rod and a linkage spring sleeved on the linkage rod;
the circuit board is provided with a contact and a contact piece which are matched with each other, and the contact piece is connected with one wire end of the coil;
the jumping frame is provided with a jacking spring for driving the jumping frame to jack upwards, and is arranged below the contact piece,
one end of the limiting piece is connected with the linkage rod and is abutted against the linkage spring, and the other end of the limiting piece is matched with the jump frame to limit the jump frame to be jacked upwards;
when the circuit board of the tripping device receives a voltage abnormal signal of the processor, the circuit board can supply power to the electromagnetic assembly, the electromagnetic assembly pulls the limiting part to move backwards through the linkage rod, the limiting part removes the limitation on the jumping frame, the jumping frame can upwards jack up the contact and the contact plate to separate under the action of the jacking spring, and meanwhile, the jumping frame can drive the tripping piece to move to cut off the power supply.
The utility model discloses further set up: the limiting part comprises a limiting body and limiting feet, the limiting body is connected with the linkage rod, the limiting feet are arranged on the limiting body and can abut against the inside of the jumping frame to limit the jumping frame to jack upwards, and when the limiting part moves backwards, the limiting feet and the jumping frame are staggered, and the limitation on the jumping frame is removed.
The utility model discloses further set up: the jump frame is provided with a pressing rod, one end of the pressing rod penetrates through the circuit board and is arranged outside the rack, and the other end of the pressing rod is abutted to the jacking spring.
The utility model discloses further set up: the three-phase voltage sampling circuit comprises a power supply transformer, a voltage rectifying circuit, a voltage sampling circuit, a voltage electronic switch and a power supply capacitor, wherein the power supply transformer is connected with the voltage rectifying circuit, the voltage rectifying circuit is connected with the voltage sampling circuit, the voltage sampling circuit is connected with the processor, the voltage rectifying circuit is connected with the voltage electronic switch, the voltage electronic switch is connected with the power supply circuit, and the power supply capacitor is connected between the electronic switch and the power supply circuit.
The utility model discloses beneficial effect: gather voltage signal through three-phase voltage sampling circuit, no matter any one of them looks electric voltage or electric current rise, reduce, lack looks and can sample correctly timing, and react to this trouble through trip gear, jump the frame and can drive the tripping device motion, cut off power supply, avoid having a looks electricity not sampled, will cause the equipment of operation unusual, damage, cause the problem of the loss of unable estimation even, contact and contact separation realize the self-protection to trip gear simultaneously, and service life is prolonged.
Drawings
FIG. 1 is a schematic diagram of a three-phase voltage protection system
Fig. 2 is an exploded view of the trip device;
fig. 3 is a schematic structural diagram of the tripping device when the contacts and the contact pieces are closed;
fig. 4 is a schematic structural view of the tripping device with the contacts and the contact plate separated;
FIG. 5 is a schematic structural diagram of a limiting member;
fig. 6 is a schematic structural diagram of a skip frame.
Description of reference numerals: 1. a processor; 2. a power supply circuit; 3. a three-phase voltage sampling circuit; 5. a trip device; 51. a frame; 52. jumping the frame; 53. a limiting member; 531. a limiting body; 532. a limiting pin; 54. an electromagnetic assembly; 541. a coil bobbin; 542. a linkage rod; 543. A linkage spring; 55. a circuit board; 551. a contact; 552. a contact piece; 56. jacking up the spring; 57. a pressing lever; 58. and (4) releasing the fastener.
Detailed Description
The three-phase voltage protection system of the present invention will be described in further detail with reference to the accompanying drawings.
As can be seen from fig. 1, a three-phase voltage protection system includes a processor 1, a power circuit 2, a three-phase voltage sampling circuit 3 and a trip device 5, wherein output terminals of the three-phase voltage sampling circuit 3 and the power circuit 2 are respectively connected with an input terminal of the processor 1; as can be seen from fig. 2, the trip device 5 includes a frame 51, a trip frame 52 for driving a trip unit 58 to trip, a limiting member 53, an electromagnetic assembly 54 for driving the limiting member 53 to move back and forth, and a circuit board 55 for supplying power to the electromagnetic assembly 54 are disposed on the frame 51, and the circuit board 55 is connected to an output end of the processor 1; the electromagnetic assembly 54 comprises a coil framework 541 wound with coils, a linkage rod 542 and a linkage spring 543 sleeved on the linkage rod 542; the circuit board 55 is provided with a contact 551 and a contact 552 which are matched with each other, and the contact 552 is connected with one wire end of the coil; the jump frame 52 is provided with a jacking spring 56 for driving the jump frame to jack upwards, the jump frame 52 is arranged below the contact piece 552, one end part of the limiting piece 53 is connected with the linkage rod 542 and is abutted against the linkage spring 543, and the other end part of the limiting piece 53 is matched with the jump frame 52 to limit the jump frame 52 to jack upwards;
the three-phase voltage sampling circuit 3 comprises a power supply transformer, a voltage rectifying circuit, a voltage sampling circuit, a voltage electronic switch and a power supply capacitor, the power supply transformer is connected with the voltage rectifying circuit, the voltage rectifying circuit is connected with the voltage sampling circuit, the voltage sampling circuit is connected with the processor 1, the voltage rectifying circuit is connected with the voltage electronic switch, the voltage electronic switch is connected with the power supply circuit 2, and the power supply capacitor is connected between the electronic switch and the power supply circuit 2 to realize voltage sampling.
As can be seen from fig. 3 and 4, the voltage signal is collected by the three-phase voltage sampling circuit 3, no matter any phase of the voltage signal or the current is increased, decreased, or phase loss, the trip device 5 can sample the voltage signal correctly, and in response to the fault, the trip frame 52 can drive the trip device 58 to move, and cut off the power supply, when the circuit board 55 of the trip device 5 receives the voltage abnormal signal of the processor 1, the circuit board 55 can apply current to the coil of the electromagnetic assembly 54, so that the electromagnetic assembly 54 pulls the limit piece 53 to move backwards through the linkage rod 542, at this time, the limit piece 53 removes the limit on the trip frame 52, at this time, the trip frame 52 can jack up to separate the contact 551 and the contact 552 under the action of the jack-up spring 56, the power-on signal of the trip device is disconnected, the continuous power-on of the trip device is avoided, and the switch elements of the circuit board can be quickly burned due to an excessive, and even a fryer.
As can be seen from fig. 5, the limiting member 53 includes a limiting body 531 connected to the linkage 542 and a limiting foot 532 disposed on the limiting body 531, the limiting foot 532 will abut against the inside of the jumping frame 52 to limit the jumping frame 52 to be lifted upwards, when the limiting member 53 moves backwards, the limiting foot 532 is staggered from the jumping frame 52 to remove the limitation on the jumping frame 52, the structure of the limiting member 53 is simple, the limiting member 53 is effectively ensured to limit the jumping frame 52 to move, the jumping frame 52 can be quickly lifted upwards to separate the contact 551 and the contact 552 under the action of the lifting spring 56, and the power-on signal of the trip is disconnected.
As shown in fig. 6, the jumper frame 52 is provided with a pressing rod 57, one end of the pressing rod 57 is disposed outside the frame 51 through the circuit board 55, and the other end of the pressing rod 57 abuts against the jacking spring 56, so that the jumper frame 52 is moved downward to be reset by applying pressure to the pressing rod 57, and is re-engaged with the limiting member 53.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (4)

1. A three-phase voltage protection system is characterized in that: the tripping device comprises a processor, a power supply circuit, a three-phase voltage sampling circuit and a tripping device, wherein the output ends of the three-phase voltage sampling circuit and the power supply circuit are respectively connected with the input end of the processor;
the tripping device comprises a frame, wherein a jumping frame for driving the tripping piece to perform tripping action, a limiting piece, a circuit board for driving the limiting piece to move the electromagnetic assembly back and forth and for supplying power to the electromagnetic assembly are arranged on the frame, and the circuit board is connected with the output end of the processor
The electromagnetic assembly comprises a coil framework wound with coils, a linkage rod and a linkage spring sleeved on the linkage rod;
the circuit board is provided with a contact and a contact piece which are matched with each other, and the contact piece is connected with one wire end of the coil;
the jumping frame is provided with a jacking spring for driving the jumping frame to jack upwards, and is arranged below the contact piece,
one end of the limiting piece is connected with the linkage rod and is abutted against the linkage spring, and the other end of the limiting piece is matched with the jump frame to limit the jump frame to be jacked upwards;
when the circuit board of the tripping device receives a voltage abnormal signal of the processor, the circuit board can supply power to the electromagnetic assembly, the electromagnetic assembly pulls the limiting part to move backwards through the linkage rod, the limiting part removes the limitation on the jumping frame, the jumping frame can upwards jack up the contact and the contact plate to separate under the action of the jacking spring, and meanwhile, the jumping frame can drive the tripping piece to move to cut off the power supply.
2. A three-phase voltage protection system according to claim 1, characterized by: the limiting part comprises a limiting body and limiting feet, the limiting body is connected with the linkage rod, the limiting feet are arranged on the limiting body and can abut against the inside of the jumping frame to limit the jumping frame to jack upwards, and when the limiting part moves backwards, the limiting feet and the jumping frame are staggered, and the limitation on the jumping frame is removed.
3. A three-phase voltage protection system according to claim 2, characterized by: the jump frame is provided with a pressing rod, one end of the pressing rod penetrates through the circuit board and is arranged outside the rack, and the other end of the pressing rod is abutted to the jacking spring.
4. A three-phase voltage protection system according to claim 1, 2 or 3, characterized by: the three-phase voltage sampling circuit comprises a power supply transformer, a voltage rectifying circuit, a voltage sampling circuit, a voltage electronic switch and a power supply capacitor, wherein the power supply transformer is connected with the voltage rectifying circuit, the voltage rectifying circuit is connected with the voltage sampling circuit, the voltage sampling circuit is connected with the processor, the voltage rectifying circuit is connected with the voltage electronic switch, the voltage electronic switch is connected with the power supply circuit, and the power supply capacitor is connected between the electronic switch and the power supply circuit.
CN201921165252.4U 2019-07-23 2019-07-23 Three-phase voltage protection system Expired - Fee Related CN209963744U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921165252.4U CN209963744U (en) 2019-07-23 2019-07-23 Three-phase voltage protection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921165252.4U CN209963744U (en) 2019-07-23 2019-07-23 Three-phase voltage protection system

Publications (1)

Publication Number Publication Date
CN209963744U true CN209963744U (en) 2020-01-17

Family

ID=69248941

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921165252.4U Expired - Fee Related CN209963744U (en) 2019-07-23 2019-07-23 Three-phase voltage protection system

Country Status (1)

Country Link
CN (1) CN209963744U (en)

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Granted publication date: 20200117