CN2937551Y - Electronic anti-racing protector - Google Patents
Electronic anti-racing protector Download PDFInfo
- Publication number
- CN2937551Y CN2937551Y CN 200620085700 CN200620085700U CN2937551Y CN 2937551 Y CN2937551 Y CN 2937551Y CN 200620085700 CN200620085700 CN 200620085700 CN 200620085700 U CN200620085700 U CN 200620085700U CN 2937551 Y CN2937551 Y CN 2937551Y
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- CN
- China
- Prior art keywords
- magnetic drive
- controller
- pin
- relay contact
- current transformer
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- Expired - Fee Related
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- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model relates to an electronic anti-running-idle protector mainly used for anti-running-idle protection of magnetic drive pumps. The utility model comprises a control button and a relay contact. The utility model is characterized in that a controller and a current transformer are mounted in, the control button and the current transformer are connected to the input end of the controller, the relay contact is connected with the magnetic drive pump control loop, and the controlling end of the relay contact is connected with the output of the controller. The utility model of electronic anti-running-idle protector, electronic components control, is of small size, high sensitivity and reliable performance, by means of setting the controller and the current transformer, the control button and the current transformer being connected to the input of the controller, the relay contact being connected with the input of the controller and the magnetic drive pump control loop. When the motor loading is lightened by the magnetic drive pumping nothing, the motor current reduces, the protector operates to drive the relay contact to cut the magnetic drive pump control loop, thus the long time idle running of the magnetic drive pump to cause pump head and the isolation cover to be worn and lost is avoided, and the accident is avoided.
Description
Technical field
The utility model relates to a kind of electronic anti-slip protector, is mainly used in the antiaircraft rotation protection of magnetic drive pump.
Background technique
Magnetic drive pump drives the impeller rotation in the pump housing by the permanent magnetism power between the inside and outside magnet rotor of magnetic airproof driver, by being installed in the static separation sleeve between the inside and outside magnet rotor, guarantees that its pump medium does not leak.Pump rotor is made up of interior magnet rotor, pump rotating shaft and impeller, is supported by forward and backward radial bearing, and controls its axial displacement by axial force balance mechanism.Magnetic drive pump is widely used in carrying inflammable and explosive medium and poisonous medium.But when magnetic drive pump occurring and find time, be easy to take place the high temperature demagnetization and the damage of bearings of magnet rotor, and separation sleeve than galling, not only cause big potential safety hazard, and reduce the working life of magnetic drive pump to production.
Existing resist technology, main with the method that increases cooling unit, can not fundamentally solve magnetic drive pump idle running problem.
Summary of the invention
The purpose of this utility model is to provide a kind of electronic anti-slip protector, and volume is little, and is highly sensitive, and reliable performance can in time be found magnetic drive pump idle running, and make a response automatically, avoids the idle running of magnetic drive pump.
Electronic anti-slip protector described in the utility model; comprise control knob and relay contact; the controller summation current transformer is set; the control knob summation current transformer connects the controller input end; relay contact connects the magnetic drive pump control loop, and the control end of relay contact connects controller output end.
Wherein:
Controller comprises power subsystem and control unit; Control unit comprises comparison amplification circuit and drive circuit, the signal sensitivity.
Current transformer is installed on the magnetic drive pump power line, compact structure, volume is little.
Working principle is: current transformer is obtained the magnetic drive pump power supply signal, and after the processing of comparing amplification circuit, drive circuit judges whether action.When the signal of obtaining when current transformer diminishes, after the processing through amplification circuit relatively, the drive circuit conducting, engage relay, the relay adhesive, relay contact disconnects the magnetic drive pump control loop, and magnetic drive pump is quit work.
The utility model causes idle running because of aneroid at magnetic drive pump in operation process, fragile magnetic force pump head designs, according to usage requirement, set up accessories such as run indicator, fault indicating lamp, reset switch, can be you and in time find and fix a breakdown good help is provided.
The utility model electronic anti-slip protector, electronic parts and components control, volume is little; highly sensitive, reliable performance is by being provided with the controller summation current transformer; the control knob summation current transformer connects the controller input end, and relay contact connects controller output end and magnetic drive pump control loop.Find time to cause motor load to alleviate at magnetic drive pump, when current of electric reduced, protector action drives relay contact cut off the magnetic drive pump control loop, had avoided the long-term idle running of magnetic drive pump to cause the wearing and tearing and the loss of pump head and separation sleeve, thereby had avoided having an accident.Therefore, have high use value and obvious economic benefit aborning.
Description of drawings
Fig. 1, the utility model embodiment principle schematic.
The comparison amplification circuit of Fig. 2, the utility model controller and the circuit theory diagrams of drive circuit.
Among the figure: U1, integrated operational amplifier U2, logic chip R1-R22, resistance R P1-RP3, potentiometer C1-C7, electric capacity D1-D7, diode ZD1, ZD2, reference diode B1, inductance S1, switch Q1, triode KM1, relay.
Embodiment
Below in conjunction with embodiment's accompanying drawing the utility model is further described.
As shown in Figure 1, the magnetic drive pump control loop is provided with switch, relay switch summation current transformer, the control knob summation current transformer connects the controller input end, and the control end of relay contact connects controller output end, the magnetic drive pump control loop provide power supply for controller.
As shown in Figure 2, relatively amplification circuit comprises integrated operational amplifier U1, logic chip U2 and is made up of the peripheral circuit that resistance R 1-R20, capacitor C 1-C6, inductance B1, diode D1-D5, reference diode ZD1, ZD2 and potentiometer RP1-RP3 etc. form.Be connected with resistance R 2, R3 between 13 pin of integrated operational amplifier U1D and 14 pin, 14 pin are by 10 pin of R1 connection integrated operational amplifier U1C, and 13 pin are by reference diode ZD2 ground connection, by resistance R 5, R6 ground connection.10 pin of integrated operational amplifier U1C are connected to reference diode ZD1 by resistance R 4 and inductance B1 ground connection between 10 pin and 9 pin, and 9 pin are parallel with capacitor C 1 and potentiometer RP1 by resistance R 7 ground connection between 9 pin and 8 pin.8 pin of integrated operational amplifier UlC connect the sliding end and 6 pin that are connected integrated operational amplifier U1B by resistance R 9 of potentiometer RP2 by capacitor C 2.Have between 8 pin of integrated operational amplifier U1 and 5 pin to have between resistance R 10,8 pin and 3 pin between resistance R 8,8 pin and 2 pin capacitor C 3 is arranged.3 pin of integrated operational amplifier UlA are by resistance R 12, R13, R15 and potentiometer RP2 ground connection, also by resistance R 12, R14 and capacitor C 6 ground connection.Resistance R 14 and diode D4 parallel connection.1 pin of integrated operational amplifier U1A connects diode D2 and potentiometer RP3,7 pin of integrated operational amplifier UlB are connected resistance R 18 by parallel resistor R17 with diode D1, connect by capacitor C 4, C5 between the two, the positive pole of capacitor C 4, C5 is connected on 6 pin of logic chip U2 by diode D3, D5.5 pin of logic chip U2 connect 11 pin, and 12 pin connect 4 pin, and 13 pin connect 2 pin, and 4 pin connect 1 pin, and 3 pin connect 8 pin and 9 pin.13 pin of logic chip U2 are by switch S 1 ground connection.
Drive circuit comprises resistance R 21, R22, diode D6, D7, and triode Q1, relay K M1 and capacitor C 7 are formed.10 pin of logic chip U2 connect the base stage of triode Q1 by resistance R 21.The base stage of triode Q1 is by capacitor C 7 ground connection, radio utmost point ground connection.Collector electrode meets power supply VCC by relay K M1.Resistance R 22 and diode D6 series connection, in parallel with diode D7 and relay M1 then.
Power subsystem constitutes for the common power device, and an end connects the phase from control loop, and an end connects the VCC of drive circuit, for controller provides the power supply support.Alarm indicator lamp or alarm can also be set as required.
If the magnetic drive pump current of electric can be with the mutual inductor input end of the direct input protector of magnetic drive pump electric current less than 5 ampere-hours.When electric current is big; input end by the induction current input protector of current transformer; make electric current to the voltage change amplification by integrated operational amplifier U1D; send into integrated operational amplifier U1C again and do voltage amplification; after the reference potential that 5 pin that exported to integrated operational amplifier U1B by 8 pin one tunnel are got by potentiometer RP2 and resistance R 15, R13 dividing potential drop with 6 pin of integrated operational amplifier U1B is made comparisons; through resistance R 17, diode D1, resistance R 18, capacitor C 4, diode D3 is to 6 pin of logic chip U2B.One the tunnel exports 2 pin of integrated operational amplifier U1A to, the reference potential that by resistance R 12, R11 VCC voltage dividing potential drop is got with 3 pin amplifications of making comparisons delayed time after diode D5 exports 6 pin of logic chip U2B to via potentiometer RP3, resistance R 19, diode D2, resistance R 20, capacitor C 5.In addition the VCC power supply is sent into 13 pin of logic chip U2D through resistance R 14, diode D4, resistance R 16, capacitor C 6, and 13 pin are opened contact ground connection through switch S 1 is long.
When magnetic drive pump runs well, because current of electric is bigger, current transformer to provide electric current also bigger, the reference potential height of voltage ratio 6 pin of 8 pin output after integrated operational amplifier U1C amplifies, about positive voltage of about 10 volts of 7 pin output is through resistance R 17, R18, diode D1, D3 are to 6 pin of logic chip U2B, negative voltage of 4 pin output, negative voltage of output is given triode Q1 after twice of logic chip U2A, logic chip U2C are anti-phase, triode Q1 ends, relay K M1 is failure to actuate, and magnetic drive pump runs well.And when magnetic drive pump is found time; the pump motor electric current diminishes; cause after integrated operational amplifier U1C amplifies to the 5 pin voltages of integrated operational amplifier U1B reference potential less than 6 pin; and make 7 pin output negative voltage through resistance R 17, R18; diode D1, D3 are to 6 pin of logic chip U2B; anti-phase through twice of logic chip U2A, logic chip U2C; make 10 pin fail positive voltage; triode Q1 conducting; relay K M1 adhesive; relay K M1 contact disconnects magnetic drive pump control loop power supply, avoids magnetic drive pump to dally for a long time, and magnetic drive pump is protected.
Claims (4)
1, a kind of electronic anti-slip protector; comprise control knob and relay contact; it is characterized in that being provided with the controller summation current transformer; the control knob summation current transformer connects the controller input end; relay contact connects the magnetic drive pump control loop, and the control end of relay contact connects controller output end.
2, electronic anti-slip protector according to claim 1 is characterized in that controller comprises power subsystem and control unit.
3, electronic anti-slip protector according to claim 2 is characterized in that control unit comprises comparison amplification circuit and drive circuit.
4,, it is characterized in that current transformer is installed on the magnetic drive pump power line according to claim 1,2 or 3 described electronic anti-slip protectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620085700 CN2937551Y (en) | 2006-06-14 | 2006-06-14 | Electronic anti-racing protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620085700 CN2937551Y (en) | 2006-06-14 | 2006-06-14 | Electronic anti-racing protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2937551Y true CN2937551Y (en) | 2007-08-22 |
Family
ID=38361577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620085700 Expired - Fee Related CN2937551Y (en) | 2006-06-14 | 2006-06-14 | Electronic anti-racing protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2937551Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116284A (en) * | 2011-03-05 | 2011-07-06 | 介国安 | No-setting pump no-liquid idling preventing protector |
-
2006
- 2006-06-14 CN CN 200620085700 patent/CN2937551Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116284A (en) * | 2011-03-05 | 2011-07-06 | 介国安 | No-setting pump no-liquid idling preventing protector |
| CN102116284B (en) * | 2011-03-05 | 2013-06-19 | 介国安 | No-setting pump no-liquid idling preventing protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHANG GUANGSHENG Owner name: WANG BINGSHUAN Free format text: FORMER OWNER: YONGQI CHEMICAL TECHNOLOGY DEVELOPMENT CO., LTD., ZIBO Effective date: 20110411 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Bingshuan Inventor after: Zhang Guangsheng Inventor before: Wang Bingshuan Inventor before: Zhang Guangsheng Inventor before: Liu Qicheng |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG BINGSHUAN ZHANG GUANGSHENG LIU QICHENG TO: WANG BINGSHUAN ZHANG GUANGSHENG Free format text: CORRECT: ADDRESS; FROM: 255086 ROOM 820, TOWER D, VENTURE PARK, NO. 135, ZHENGTONG ROAD, HIGH-TECH.DEVELOPMENT ZONE, ZIBO CITY, SHANDONG PROVINCE TO: 050051 18-2-501, NO. 129, HONGQI STREET, QIAOXI DISTRICT, SHIJIAZHUANG CITY, HEBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110411 Address after: 050051, 18-2-501, 129 Hongqi Avenue, Shiqiao West, Hebei, Shijiazhuang Co-patentee after: Zhang Guangsheng Patentee after: Wang Bingshuan Address before: 820, room 255086, block D, No. 135, executive Road, Zibo hi tech Development Zone, Shandong, China Patentee before: Yongqi Chemical Technology Development Co., Ltd., Zibo |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070822 Termination date: 20120614 |