CN109035719A - Miniature motor overtemperature protection system - Google Patents

Miniature motor overtemperature protection system Download PDF

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Publication number
CN109035719A
CN109035719A CN201810916083.7A CN201810916083A CN109035719A CN 109035719 A CN109035719 A CN 109035719A CN 201810916083 A CN201810916083 A CN 201810916083A CN 109035719 A CN109035719 A CN 109035719A
Authority
CN
China
Prior art keywords
resistance
triode
circuit
diode
contactor
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201810916083.7A
Other languages
Chinese (zh)
Inventor
李振宇
叶青
夏力朋
郭晋波
马思琦
谢菲
李震宇
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.)
State Grid Corp of China SGCC
State Grid Liaoning Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Liaoning Electric Power 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.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, State Grid Liaoning Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201810916083.7A priority Critical patent/CN109035719A/en
Publication of CN109035719A publication Critical patent/CN109035719A/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/185—Electrical failure alarms
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
    • H02H7/0852—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load directly responsive to abnormal temperature by using a temperature sensor

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Protection Of Generators And Motors (AREA)

Abstract

The invention belongs to the detection device of power equipment, in particular to a kind of miniature motor overtemperature protection system.It include: power rectifier circuit (1), three A.C. contactor circuits (6), binomial A.C. contactor circuit (5), it is characterized in that, it is additionally provided with control circuit (2), temperature transducer circuit (4) and display circuit (3) in a device, includes: triode Q in control circuit (2)1~Q6, electrolytic capacitor C1~C5, resistance R1~R14, variable resistance BR, zener diode D7、D8, diode D9, relay J, relay coil L2, voltmeter V, light emitting diode D5、D6；It include: light emitting diode D in display circuit (3)1~D4；It include: temperature detecting resistance CR in testing temperature sensor circuit (4)1~CR3.Simple and compact for structure, small in size in a reservoir, easy to install and use, the reliable performance of dress of device, at low cost, pump house, mill rice, face room etc. especially suitable for rural area use.

Description

Miniature motor overtemperature protection system
Technical field
The invention belongs to the detection device of power equipment, in particular to a kind of miniature motor overtemperature protection system.
Background technique
Currently, the power of motor used is also increasing, motor in the case where the production of all trades and professions rapid development Overheating protection also increasingly it is necessary to, if the electromotor overload time is long, generate overheat, the stator line of motor will be destroyed Circle, causes motor that cannot work, and not only influences production while causing the economic loss hated.Existing a variety of intelligent motors Overtemperature protection system, but its is at high cost, is applicable in high capacity motor.And the water pump in many rural areas, mill rice, flour milling it is small-sized There are many motor, and the overheating protection of these motor is very necessary, these miniature motors will increase using intelligent overheating protection Production cost increases certain difficulty to people on using operation.
Summary of the invention
It is an object of the invention to overcome above-mentioned technical deficiency, provide that a kind of structure is simple, and easy to install and use, performance can The miniature motor overtemperature protection system leaned on.
The present invention solve technical problem the technical solution adopted is that: miniature motor overtemperature protection system includes: that power supply is whole Current circuit, three A.C. contactor circuits, binomial A.C. contactor circuit, its main feature is that, be additionally provided in a device control circuit, Temperature transducer circuit and display circuit include: triode Q in control circuit1~Q6, electrolytic capacitor C1~C5, resistance R1~ R14, variable resistance BR, zener diode D7、D8, diode D9, relay J, relay coil L2, voltmeter V, light emitting diode D5、D6；It include: light emitting diode D in display circuit1~D4；It include: temperature detecting resistance CR in testing temperature sensor circuit1~CR3； Their connection relationship is: 1~6 foot of relay J connects three exchanges in three A.C. contactor circuits and connects in control circuit Tentaculum coil L1One end, fuse YR in power rectifier circuit3One end, binomial exchange connects in binomial A.C. contactor circuit Tentaculum coil L3One end, relay coil L2One termination power rectifier circuit in rectifier bridge Z14 feet, electrolytic capacitor C1's Anode, resistance R1One end, relay coil L2Another termination electrolytic capacitor C5Anode and triode Q6Collector, three Pole pipe Q6Transmitter meet electrolytic capacitor C5Cathode and resistance R13One end, resistance R13Another termination triode Q5Transmitting One end of mechanical, electrical pressure Table V, resistance R11、R6、R4One end, variable resistance BR 2,3 feet, electrolytic capacitor C4Cathode, pressure stabilizing two Pole pipe D8One end and ground, triode Q6Base stage connecting resistance R12One end, resistance R12Another terminating resistor R10One end, two Pole pipe D9One end, diode D9Another termination triode Q4Emitter, resistance R11The other end, voltmeter V it is another End, resistance R10Another termination triode Q5Base stage, triode Q5Collector sending and receiving optical diode D6One end, shine two Pole pipe D6Another terminating resistor R9One end, triode Q4Base stage connecting resistance R6The other end, triode Q3Collector, three Pole pipe Q4Collector connecting resistance R8One end, triode Q3Emitter connecting resistance R7One end, triode Q3Base stage connect electricity Hinder R5One end, zener diode D7One end, temperature detecting resistance CR in testing temperature sensor circuit1、CR2、CR3One end, resistance R5Another termination variable resistance BR 1 foot, resistance R9Another terminating resistor R14One end, resistance R8、R7The other end, survey Temperature detecting resistance CR in temperature sensor circuit1、CR2、CR3The other end, zener diode D7The other end, resistance R2One end, Electrolytic capacitor C3Anode, triode Q1Emitter, resistance R2Another termination display circuit in light emitting diode D3、D4One End, triode Q1Base stage meets triode Q2Emitter, triode Q1Collector connecting transistor Q2Collector, resistance R3One End, electrolytic capacitor C2Anode, rectifier Z in power rectifier circuit24 feet, resistance R4The other end, triode Q2Base stage Meet zener diode D8The other end, electrolytic capacitor C4Anode, resistance R3The other end, electrolytic capacitor C1Cathode and resistance R1 The other end ground connection, resistance R4Other end sending and receiving optical diode D5One end, light emitting diode D5The other end ground connection；Display Light emitting diode D in circuit3、D4Other end sending and receiving optical diode D1、D2One end, light emitting diode D1、D2Another termination Ground.
The beneficial effects of the present invention are: miniature motor overtemperature protection system is simple and compact for structure, body in a reservoir is filled Small, easy to install and use, the reliable performance of product, at low cost, pump house, mill rice, face room etc. especially suitable for rural area use.
Detailed description of the invention
It is illustrated below in conjunction with attached drawing with embodiment.
Fig. 1 is the circuit diagram of miniature motor overtemperature protection system.
In figure, 1- power rectifier circuit；2- control circuit；3- display circuit；4- testing temperature sensor circuit；5- tri- friendships Flow contactor circuit；6- binomial A.C. contactor circuit.
Specific embodiment
Embodiment includes: rectifier in the power rectifier circuit 1 in miniature motor overtemperature protection system referring to attached drawing 1 Z1、Z2, transformer B, transformer coil L4、L5、L6, fuse YR1~YR4, switch K2；Their connection relationship is: transformer B Transformer coil L4One termination fuse YR2One end, fuse YR2Three A.C. contactor circuits 6 of another termination in Three contactor coil L1The other end and switch K2One end, binomial A.C. contactor G in binomial A.C. contactor circuit 52's 1 foot.Transformer coil L4Another termination fuse YR3The other end, binomial A.C. contactor G23 feet, transformer coil L5 One termination fuse YR1One end, fuse YR1Another termination rectifier bridge Z11 foot, transformer coil L5The other end Meet rectifier bridge Z13 feet, rectifier bridge Z12 feet ground connection.Transformer coil L6One termination fuse YR4One end, fuse YR4 Another termination rectifier bridge Z21 foot, transformer coil L6Another termination rectifier bridge Z23 feet, rectifier bridge Z22 feet ground connection, Transformer B integral ground.Switch K2Another termination binomial A.C. contactor circuit 5 in binomial ac contactor coil L3It is another One end.It include: triode Q in control circuit 21~Q6, electrolytic capacitor C1~C5, resistance R1~R14, variable resistance BR, pressure stabilizing two Pole pipe D7、D8, diode D9, relay J, relay coil L2, voltmeter V, light emitting diode D5、D6；It is wrapped in display circuit 3 It includes: light emitting diode D1~D4；It include: temperature detecting resistance CR in testing temperature sensor circuit 41~CR3；Their connection relationship is: 1~6 foot of relay J meets three ac contactor coil L in three A.C. contactor circuits 5 in control circuit 21One Fuse YR in end, power rectifier circuit 13One end, binomial ac contactor coil L in binomial A.C. contactor circuit 63's One end, relay coil L2One termination power rectifier circuit 1 in rectifier bridge Z14 feet, electrolytic capacitor C1Anode, resistance R1 One end, relay coil L2Another termination electrolytic capacitor C5Anode and triode Q6Collector, triode Q6Transmitting Machine meets electrolytic capacitor C5Cathode and resistance R13One end, resistance R13Another termination triode Q5Transmitter, voltmeter V One end, resistance R11、R6、R4One end, variable resistance BR 2,3 feet, electrolytic capacitor C4Cathode, zener diode D8One end And ground, triode Q6Base stage connecting resistance R12One end, resistance R12Another terminating resistor R10One end, diode D9One End, diode D9Another termination triode Q4Emitter, resistance R11The other end, voltmeter V the other end, resistance F10's Another termination triode Q5Base stage, triode Q5Collector sending and receiving optical diode D6One end, light emitting diode D6It is another Terminating resistor R9One end, triode Q4Base stage connecting resistance R6The other end, triode Q3Collector, triode Q4Current collection Pole connecting resistance R8One end, triode Q3Emitter connecting resistance R7One end, triode Q3Base stage connecting resistance R5One end, steady Press diode D7One end, temperature detecting resistance CR in testing temperature sensor circuit 41、CR2、CR3One end, resistance R5Another termination 1 foot of variable resistance BR, resistance R9Another terminating resistor R14One end, resistance R8、R7The other end, testing temperature sensor electricity Temperature detecting resistance CR in road 41、CR2、CR3The other end, zener diode D7The other end, resistance R2One end, electrolytic capacitor C3's Anode, triode Q1Emitter, resistance R2Another termination display circuit 3 in light emitting diode D3、D4One end, triode Q1 Base stage meets triode Q2Emitter, triode Q1Collector connecting transistor Q2Collector, resistance R3One end, electrolysis electricity Hold C2Anode, rectifier Z in power rectifier circuit 124 feet, resistance R4The other end, triode Q2Base stage connect pressure stabilizing two Pole pipe D8The other end, electrolytic capacitor C4Anode, resistance R3The other end, electrolytic capacitor C1Cathode and resistance R1The other end Ground connection, resistance R4Other end sending and receiving optical diode D5One end, light emitting diode D5The other end ground connection；In display circuit Light emitting diode D3、D4Other end sending and receiving optical diode D1、D2One end, light emitting diode D1、D2The other end ground connection.Three friendships Flowing includes three ac contactor coil L in contactor circuit 51, three A.C. contactor G1；Their connection relationship is: three A.C. contactor G1Meet three ac contactor coil L1The other end, three A.C. contactor G11,3,5 feet connect power supply, 2, 4,6 feet connect motor.It include: binomial A.C. contactor G in binomial A.C. contactor circuit 62, binomial ac contactor coil L3、 Switch K1；Their connection relationships are binomial A.C. contactor G21 foot connect 2 feet, 3 feet connect 4 feet, and switch is set between 1 foot, 2 feet K1。
The working principle of miniature motor overtemperature protection system is: using temperature transducer, monitoring motor work in device The temperature regime for making process is alarmed in overheat by the diode displaying in display circuit 3, makes one to find electricity at once Motivation overheats and closes motor.Whole device collection is small in size, easy for installation in a shell.

Claims (1)

1. a kind of miniature motor overtemperature protection system, comprising: power rectifier circuit (1), three A.C. contactor circuits (6), Binomial A.C. contactor circuit (5), which is characterized in that be additionally provided with control circuit (2), temperature transducer circuit (4) in a device It include: triode Q in control circuit (2) with display circuit (3)1~Q6, electrolytic capacitor C1~C5, resistance R1~R14, can power transformation Hinder BR, zener diode D7、D8, diode D9, relay J, relay coil L2, voltmeter V, light emitting diode D5、D6；Display It include: light emitting diode D in circuit (3)1~D4；It include: temperature detecting resistance CR in testing temperature sensor circuit (4)1~CR3；They Connection relationship be: 1~6 foot of relay J connects three in three A.C. contactor circuits (6) exchanges in control circuit (2) Contactor coil L1One end, fuse YR in power rectifier circuit (1)3One end, two in binomial A.C. contactor circuit (5) Item ac contactor coil L3One end, relay coil L2One termination power rectifier circuit (1) in rectifier bridge Z14 feet, electricity Solve capacitor C1Anode, resistance R1One end, relay coil L2Another termination electrolytic capacitor C5Anode and triode Q6's Collector, triode Q6Transmitter meet electrolytic capacitor C5Cathode and resistance R13One end, resistance R13Three pole of another termination Pipe Q5Transmitter, one end of voltmeter V, resistance R11、R6、R4One end, variable resistance BR 2,3 feet, electrolytic capacitor C4It is negative Pole, zener diode D8One end and ground, triode Q6Base stage connecting resistance R12One end, resistance R12Another terminating resistor R10 One end, diode D9One end, diode D9Another termination triode Q4Emitter, resistance R11The other end, voltmeter The other end of V, resistance R10Another termination triode Q5Base stage, triode Q5Collector sending and receiving optical diode D6One end, Light emitting diode D6Another terminating resistor R9One end, triode Q4Base stage connecting resistance R6The other end, triode Q3Collection Electrode, triode Q4Collector connecting resistance R8One end, triode Q3Emitter connecting resistance R7One end, triode Q3Base Pole connecting resistance R5One end, zener diode D7One end, temperature detecting resistance CR in testing temperature sensor circuit (4)1、CR2、CR3's One end, resistance R5Another termination variable resistance BR 1 foot, resistance R9Another terminating resistor R14One end, resistance R8、R7's Temperature detecting resistance CR in the other end, testing temperature sensor circuit (4)1、CR2、CR3The other end, zener diode D7The other end, Resistance R2One end, electrolytic capacitor C3Anode, triode Q1Emitter, resistance R2Another termination display circuit in shine Diode D3、D4One end, triode Q1Base stage meets triode Q2Emitter, triode Q1Collector connecting transistor Q2Collection Electrode, resistance R3One end, electrolytic capacitor C2Anode, rectifier Z in power rectifier circuit (1)24 feet, resistance R4It is another End, triode Q2Base stage meet zener diode D8The other end, electrolytic capacitor C4Anode, resistance R3The other end, electrolysis electricity Hold C1Cathode and resistance R1The other end ground connection, resistance R4Other end sending and receiving optical diode D5One end, light emitting diode D5 The other end ground connection；Light emitting diode D in display circuit (3)3、D4Other end sending and receiving optical diode D1、D2One end, shine Diode D1、D2The other end ground connection.
CN201810916083.7A 2018-08-13 2018-08-13 Miniature motor overtemperature protection system Pending CN109035719A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810916083.7A CN109035719A (en) 2018-08-13 2018-08-13 Miniature motor overtemperature protection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810916083.7A CN109035719A (en) 2018-08-13 2018-08-13 Miniature motor overtemperature protection system

Publications (1)

Publication Number Publication Date
CN109035719A true CN109035719A (en) 2018-12-18

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ID=64633014

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810916083.7A Pending CN109035719A (en) 2018-08-13 2018-08-13 Miniature motor overtemperature protection system

Country Status (1)

Country Link
CN (1) CN109035719A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201118204Y (en) * 2007-11-08 2008-09-17 武耀全 Electric motor temperature protector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201118204Y (en) * 2007-11-08 2008-09-17 武耀全 Electric motor temperature protector

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Application publication date: 20181218