CN202424129U - Motor monitoring protector - Google Patents
Motor monitoring protector Download PDFInfo
- Publication number
- CN202424129U CN202424129U CN2011204720624U CN201120472062U CN202424129U CN 202424129 U CN202424129 U CN 202424129U CN 2011204720624 U CN2011204720624 U CN 2011204720624U CN 201120472062 U CN201120472062 U CN 201120472062U CN 202424129 U CN202424129 U CN 202424129U
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- China
- Prior art keywords
- circuit board
- motor
- monitoring
- protection
- protecting device
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a motor monitoring protector and aims to regular monitoring protection on a three-phase motor. The motor monitoring protector comprises an upper machine, a lower machine, chips, a communication integrated module, a display panel, a switch power supply, an operation module, a monitoring protection circuit, a signal current transmitting circuit and a current transformer, wherein the chips are connected with a circuit board in the upper machine and the lower machine; the lower machine is further internally provided with the monitoring protection circuit, the communication integrated module and a signal transmitting circuit are used for carrying out RS-485 communication, the lower machine is further internally provided with the switch power supply and a control relay both of which are connected with a circuit board, an outside socket and a connection opening are further arranged on the inner circumference of the lower machine and are connected with the circuit board, and the circumference of the inner circuit board of the upper machine is provided with an LCD (liquid crystal display), an operation plate, an LED (light emitting diode) indication lamp, a singlechip and a connection interface, the current transformer is connected with the monitoring protection circuit, the monitoring data is upload to the upper machine, and a protection function on a motor is realized by the preset protection parameters. The motor monitoring protector disclosed by the utility model can be used for solving the defects of existing like products.
Description
Technical field
The utility model relates to the monitoring and protection equipment of motor; Motor monitoring and protecting device particularly; Can not only carry out conventional protection to threephase motor; Can also calculate data such as the temperature of motor, voltage, electric current, running time, power factor, frequencies, observing and controlling, record, monitoring and protection and display digit intelligent network, be widely used in low-tension motor protection monitoring field, be applicable to the use of equipment such as oil, chemical industry, mine, machinery, electric power.
Background technology
Motor is that application is quite extensive in the present production field; But motor various faults occurs through regular meeting in production run; Reasons such as, overload operation too high like motor temperature, power supply phase shortage, coil humidity, circuit loose contact, power supply short circuit, earth leakage, three-phase voltage are unequal, overvoltage or under voltage operation, motor rotor open circuit, bearing are stuck, motor stall, no-load running, these faults all can make the unsafe production run of motor burn out; Generally all be with other protection product such as thermal relay, auxiliary relay, ammeter, the time relay, electronic protector, earth leakage protective device, overvoltage protector; Mainly faults such as the operating short circuit of motor, overload, stall, overvoltage, electric leakage, three phase mains imbalance are protected; Though the certain protection effect is arranged; But exist many not enough aspects, great changes have taken place, control precision is not high, the incompatibility instantaneous measurement to receive the influence of ambient temperature like thermal relay; Electronic protector be with analog and digital circuit exist can not the directly monitoring motor service data; Directly functions such as motor are controlled in the temperature of test motor, three-phase voltage, three-phase current, power factor, frequency, record running time or start and stop simultaneously, and this technology is not easy to the modern day production management.
The utility model content
The purpose of the utility model is to the defective that prior art exists the motor monitoring and protecting device to be provided; Not only have general motor overheating, lack (break) phase, defencive functions such as short circuit, overload, underload, three-phase imbalance, stall, overvoltage, under-voltage, the ground connection of leaking electricity; Can directly control the motor start and stop or connection control motor but also have in the RS-485 communication in computer; The operating values that temperature, failure cause and the fault of the operational mode when measuring the threephase motor operation simultaneously, three-phase voltage value, three-phase electricity flow valuve, power factor, leakage current value, running time, motor is current etc. have solved the defective that existing product exists.
The utility model solves the technical scheme that its technical problem adopted: its structure of motor monitoring and protecting device comprises chip (9), current transformer (10), the monitoring and protection circuit board (11) that slave computer (1) and host computer (2), slave computer inside are provided with circuit board (8) and are connected; Said circuit board also is equipped with control protection relay (12), communication IC module (13), switching power circuit plate (14), signal acquisition circuit plate (15), and slave computer circuit board (8) is connected with host computer connector (18) through the two glue shielded cables (20) of six cores; It is inner and be connected with monitoring and protection circuit board (11) summation current transformer (10), control protection relay (12) to it is characterized in that protected data is installed in host computer (2) with Chinese LCD display (4).
Further, the Switching Power Supply plate (14) that is connected of slave computer internal circuit board (8) and signal acquisition circuit plate (15), communication integrated interface (21), little process chip circuit board (16), current analog 4-20 milliampere output interface (22), control protection relay (12) programming output interface.
Further, the output able to programme of control protection relay (12) links to each other with signal acquisition circuit plate (15), operation keyboard (5), display screen (4), little process chip (16).
Further, signal acquisition circuit plate (15) feedback is connected with control protection relay (12) output.
The motor monitoring and protecting device is connected with guidance panel through two glue shielded cable with the integrated communication module after the temperature signal of three-phase voltage signal, threephase current transformer collection, power factor, motor sends singlechip chip calculating to; Be arranged at the protection arithmetic control circuit in the monitoring and protecting device shell through the guidance panel protection; Control relay is housed protects the operation of control motor; The start and stop button is housed on the panel operation circuit board, LCD Chinese character display unit is installed in the host computer and is connected with the function circuit plate, realizes the monitoring and protection function to motor.
The motor prison protective device of the utility model is compared with existing like product, has the following advantage that has:
1, network communication management; The utility model motor monitoring and protecting device can connect and compose the total line automation communication system of RS-485 with other low pressure automation equipment, can carry out data query, parameter modification, state feedback, convenient control through the RS-485 Bus Real Time to information such as the address of the relevant setup parameter on the monitoring and protecting device, operational factor, warning message, motor, operational mode, start and stop Motor Control and improve management.
2, integrated, when being moved, realizes by motor outside the GPF (General Protection False, can also show the instantaneous value of three-phase voltage, three-phase current, power factor, motor temperature, running time, frequency, failure logging through monitoring and protecting device.
3, convenient integrated, the general protection of the utility model motor monitoring and protecting device collection, flexibility control, Chinese character show, connect monitoring, omnibearing monitoring and protection control.
4, the volume profile is little, flexible installation.Collect comprehensive intelligent motorization, digital protection and network communication in integrated, advanced person's intellectual technology is dissolved in MCC control centre.
5, perfect functions has been simplified the maintenance of traditional motor circuit greatly, has reduced cost of equipment maintenance, thereby scientific and effective scene protection, observing and controlling, display unit is provided for industrial processes control.
6, the utility model motor monitoring and protecting device is that the prompting of overall process Chinese character is conveniently debugged, reduced cost.Apparatus structure is compact, stable performance, does not need the professional to come running gear, is equipment best in the present motor protection product.
Description of drawings
Fig. 1 is the structure connection layout of the motor monitoring and protecting device of the utility model;
Fig. 2 is the slave computer layout plan of the motor monitoring and protecting device of the utility model;
Fig. 3 is the host computer layout plan of the motor monitoring and protecting device of the utility model;
Fig. 4 is the circuit theory structural map of the utility model.
Embodiment
Explanation at length below ginseng below accompanying drawing is done the motor monitoring and protecting device of the utility model.Its structure ginseng of motor monitoring and protecting device Fig. 1 comprises that the inner slave computer (1) that is connected with circuit board of slave computer and slave computer is provided with single chip circuit plate (9), current transformer (10), the monitoring and protection circuit board (11) that circuit board (8) is connected with host computer (2), slave computer inside; Said circuit board also is equipped with control protection relay (12), communication IC module (13), switching power circuit plate (14), signal acquisition circuit plate (15), little process chip (16) is connected through two glue shielded cables (20) in host computer circuit board (17), defencive functions such as overheated, the phase shortage (phase failure) of realization motor, short circuit, overload, three-phase imbalance, underload, stall, overvoltage, under-voltage, electric leakage.Signal acquisition circuit plate (15), current transformer (10) are installed in the slave computer (1) and are connected with monitoring and protection circuit board (11), display screen (4), realized the function of three-phase voltage, three-phase current, power factor and temperature test.Current transformer (10) comprises that mutual inductor, housing are provided with dress electric current mutual inductor in three square mutual inductor installing holes (10-1); The motor three-phase power line passes from electric current mutual inductor installing hole respectively, and little process chip (16), slave computer circuit board (8) are connected with host computer circuit board (17) through two glue shielded cables (20).Host computer comprises that display screen (4), LED light (3), operation keyboard (5), host computer circuit board (17) are connected.Realize analysis and calculating through little process chip (16), be connected with protection control relay (12) through operation keyboard (5) and realize motor monitoring and protection function the operational factor and the parametic fault of motor.Operation keyboard (5) be provided with start 1, start 2, stop/resetting, function, increase and minimizing button, protection parameter or the operation of control motor be set and stop through different.
Referring to Fig. 4; Current transformer (10) is imported little process chip (16) with detected information; Through computing, analysis, warning; Pass to control protection relay (12) and carry out outside the general GPF (General Protection False, also pass to display screen (4) and show and motor running time to instruct little process chip (16) to realize different Presentation Functions respectively through operation keyboard (5).Little process chip (16) is connected with control protection circuit breaker (12) with monitoring and protection circuit board (11), realizes the normal protection to motor through control protection relay (12).Described temperature test is to carry the thermistor signal line through motor itself to be connected with slave computer interface (7) and to send resistance signal to little process chip (16) computing, analysis, warning and pass to control protection circuit breaker (12) and realize defencive function.Little process chip (16) is connected with signal acquisition circuit plate (15), operation keyboard (5), thereby various parameters are carried out amplifier, calculating, analysis reception and registration signal to controlling the protection relay motor start-up or stopping; Little process chip (16) is connected with communication IC plate (13), current analog 4-20 milliampere module (22) simultaneously, and communication integrated interface (21) and current analog 4-20 milliampere output interface (22) all are located on the slave computer (7).The utility model adopts microcomputer industrial control configuration software, can adopt the RS-485 communication interface to carry out data and transmit, and forms collective and distributive type motor monitoring and protection Control Network.Through host computer, use general configuration Control Software, realize the running status of centralized displaying motor, the starting or stoping of control motor, remote inquiry, setup parameter.Can also be connected with the DCS system through the way of output of 4-20 milliampere analog quantity and check that three-phase electricity flow valuve, magnitude of voltage that motor is in operation change.
The above embodiment, just the more excellent obvious embodiment of the utility model is a kind of, and common variation that those skilled in the art carries out in the utility model technical scheme scope and replacement all should be included in the protection range of the utility model.
Claims (6)
1. its structure of motor monitoring and protecting device comprises chip (9), current transformer (10), the monitoring and protection circuit board (11) that slave computer (1) and host computer (2), slave computer inside are provided with circuit board (8) and are connected; Said circuit board also is equipped with control protection relay (12), communication IC module (13), switching power circuit plate (14), signal acquisition circuit plate (15), and slave computer circuit board (8) is connected with host computer connector (18) through the two glue shielded cables (20) of six cores; It is inner and be connected with monitoring and protection circuit board (11) summation current transformer (10), control protection relay (12) to it is characterized in that protected data is installed in host computer (2) with Chinese LCD display (4).
2. motor monitoring and protecting device according to claim 1 is characterized in that said slave computer internal circuit board (8) is connected with signal acquisition circuit plate (15), communication integrated interface (21), little process chip (16) circuit board, current analog 4-20 milliampere output interface (22), control protection relay (12) programming output interface with Switching Power Supply plate (14).
3. motor monitoring and protecting device according to claim 1 is characterized in that said current transformer (10) is provided with three square mutual inductor installing holes (10-1) and is the whole three-phase power line that passes motor respectively.
4. motor monitoring and protecting device according to claim 1; It is characterized in that said host computer comprises display screen (4), operation keyboard (5), LED light (3), slave computer circuit board (8) is connected through cable (20) with host computer circuit board (17) data communication interface (18).
5. according to claim 2 or 4 described motor monitoring and protecting devices, it is characterized in that controlling protection relay (12) output able to programme and be connected with signal acquisition circuit plate (15), operation keyboard (5), display screen (4), little process chip (16).
6. motor monitoring and protecting device according to claim 1 and 2 is characterized in that signal acquisition circuit plate (15) feedback is connected with control protection relay (12) output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204720624U CN202424129U (en) | 2011-11-10 | 2011-11-10 | Motor monitoring protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204720624U CN202424129U (en) | 2011-11-10 | 2011-11-10 | Motor monitoring protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202424129U true CN202424129U (en) | 2012-09-05 |
Family
ID=46748854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204720624U Expired - Fee Related CN202424129U (en) | 2011-11-10 | 2011-11-10 | Motor monitoring protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202424129U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795794A (en) * | 2015-03-25 | 2015-07-22 | 安徽智瑞电气有限公司 | Low-voltage motor protection and measuring control device |
| CN105633915A (en) * | 2016-02-29 | 2016-06-01 | 长沙群瑞电子科技有限公司 | Upper computer controlled electric motor protection apparatus |
| CN113341910A (en) * | 2021-04-30 | 2021-09-03 | 浙江大唐乌沙山发电有限责任公司 | High-voltage motor non-electric quantity protection measurement and control device and protection measurement and control method |
| CN114137295A (en) * | 2021-11-27 | 2022-03-04 | 台州安耐杰电力设备有限公司 | Three-phase circuit data measurement and control device |
-
2011
- 2011-11-10 CN CN2011204720624U patent/CN202424129U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795794A (en) * | 2015-03-25 | 2015-07-22 | 安徽智瑞电气有限公司 | Low-voltage motor protection and measuring control device |
| CN105633915A (en) * | 2016-02-29 | 2016-06-01 | 长沙群瑞电子科技有限公司 | Upper computer controlled electric motor protection apparatus |
| CN113341910A (en) * | 2021-04-30 | 2021-09-03 | 浙江大唐乌沙山发电有限责任公司 | High-voltage motor non-electric quantity protection measurement and control device and protection measurement and control method |
| CN114137295A (en) * | 2021-11-27 | 2022-03-04 | 台州安耐杰电力设备有限公司 | Three-phase circuit data measurement and control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: CANGNAN GEYAO ELECTRONICS CO., LTD. Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20131110 |