CN109066595A - Contactless pointer-type protector - Google Patents
Contactless pointer-type protector Download PDFInfo
- Publication number
- CN109066595A CN109066595A CN201811050490.0A CN201811050490A CN109066595A CN 109066595 A CN109066595 A CN 109066595A CN 201811050490 A CN201811050490 A CN 201811050490A CN 109066595 A CN109066595 A CN 109066595A
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- CN
- China
- Prior art keywords
- pointer
- ammeter
- motor
- relay
- current
- 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
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Classifications
-
- 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
- H02H7/0855—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 avoiding response to transient overloads, e.g. during starting
Landscapes
- Control Of Electric Motors In General (AREA)
Abstract
The present invention relates to contactless pointer protectors, including motor, current sampling mutual inductor CT, ammeter A, time-delay relay SJ, proximity sensor PA, intermediate relay KM, electric current relay KA, intermediate relay KM connection three phase network and motor, current sampling mutual inductor CT is connected with any the two of three phase network, it is sampled for converting low current signal for high current signal, ammeter A is connected to the side current sampling mutual inductor CT, time-delay relay SJ and proximity sensor PA, electric current relay KA concatenates the start and stop for controlling motor, it can effectively play a protective role to motor, high current when electric motor starting can be avoided simultaneously, it is more convenient to use, structure is simple, it is practical.
Description
Technical field
The present invention relates to contactless pointer protectors, belong to motor field.
Background technique
Motor (English: Electric machinery is commonly called as " motor "), which refers to, realizes electric energy according to the law of electromagnetic induction
A kind of calutron of conversion or transmitting, motor are indicated with letter M (old plant D) in circuit, its main function is
Driving torque is generated, as electrical appliance or the power source of various machinery, generator is indicated with letter G in circuit, it main
Effect is that electric energy is converted into using mechanical energy, in the prior art, when motor breaks down, when such as opening a way, cannot be cut off at once
Power supply can then generate danger, generate damage to motor.
Summary of the invention
The technical problem to be solved in the present invention overcomes existing defect, provides contactless pointer protector, can be effective
High current when playing a protective role to motor, while can avoid electric motor starting, more convenient to use, structure is simple, is applicable in
It is practical in the motor of different capacity size, it can effectively solve the problems in background technique.
In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:
Contactless pointer-type protector, including motor, current sampling mutual inductor CT, ammeter A, time-delay relay SJ, connect
Nearly sensor PA, intermediate relay KM, electric current relay KA, intermediate relay KM connection three phase network and motor, current sampling
Mutual inductor CT is connected with any the two of three phase network, is sampled for converting low current signal for high current signal, electricity
Flow table A is connected to the side current sampling mutual inductor CT, and time-delay relay SJ concatenates use with proximity sensor PA, electric current relay KA
In the start and stop of control motor.
Furthermore, the ammeter A is equipped with ammeter pointer, adjustment acts pointer.
Furthermore, adjustment movement pointer regulation button is additionally provided at the top of the ammeter A, and adjustment acts pointer tune
Section button is fixedly connected with adjustment movement pointer.
Furthermore, the side the ammeter A is also serially connected with combined aural and visual alarm.
Furthermore, the adjustment movement pointer connects proximity sensor PA by conducting wire.
The invention has the advantages that: contactless pointer protector, only need to adjust by adjusting movement pointer when in use
Button adjusts adjustment movement pointer to overload current value, and the excessive pointer of the electric current generated when motor operation refers to by adjusting movement
Proximity sensor control circuit disconnects when near needle, while the signal of ammeter is derived from current sampling mutual inductor, can be in proportion
It is scaled the range of ammeter, suitable for the motor of different capacity, can effectively be prevented by increasing time-delay relay in circuit
Only electric motor starting electric current crosses ambassador's proximity sensor and generates malfunction, more convenient to use, it is ensured that reliable performance is stablized.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.
Fig. 1 is the contactless pointer protector circuit structure diagram of the present invention.
Fig. 2 is the contactless pointer protector current meter structure figure of the present invention.
Figure label: 1, adjustment acts pointer；2, ammeter pointer；3, adjustment acts pointer regulation button.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
As shown in Figs. 1-2, contactless pointer protector, including motor, current sampling mutual inductor CT, ammeter A, delay
Relay SJ, proximity sensor PA, intermediate relay KM, electric current relay KA, intermediate relay KM connection three phase network and electricity
Machine, current sampling mutual inductor CT are connected with any the two of three phase network, for converting low current signal for high current signal
Be sampled, ammeter A is connected to the side current sampling mutual inductor CT, time-delay relay SJ and proximity sensor PA, electric current after
Electric appliance KA concatenates the start and stop for controlling motor.
More specifically, the ammeter A is equipped with ammeter pointer 2, adjustment acts pointer 1, at the top of the ammeter A
It is additionally provided with adjustment movement pointer regulation button 3, and adjustment movement pointer regulation button 3 is fixedly connected with adjustment movement pointer 1, it is described
The side ammeter A is also serially connected with combined aural and visual alarm, and the adjustment movement pointer 1 connects proximity sensor PA by conducting wire.
Circuit job description: 1, the QS circuit that closes a switch obtains electric, presses SB, KM is attracted, motor operating；
2, when running current is more than setting value, the deflection angle of pointer increases, by proximity sensor, proximity sensor
It drives KA to be attracted, disconnects KA point, KM discharges so that motor shuts down；
3, the circuit increases time-delay relay SJ, it is therefore an objective to prevent electric motor starting electric current from crossing ambassador's proximity sensor GK
(PA) malfunction is generated, high current when electric motor starting is effectively avoided, until motor puts into protection when running well again, it is ensured that
Reliable performance is stablized；
4, the signal of ammeter comes from current sampling mutual inductor, it is possible to carry out signal to any motor revolution electric current and take
Sample work, can the motor widely to various power protect.
Proximity sensor in the present embodiment may be replaced by infrared sensor, can play the same role, former
Reason with it is upper identical.
The above are the preferable embodiments of the present invention, and those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is modified, and therefore, the invention is not limited to above-mentioned specific embodiment, all those skilled in the art exist
Made any conspicuous improvement, replacement or modification all belong to the scope of protection of the present invention on the basis of the present invention.
Claims (5)
1. contactless pointer-type protector, including it is motor, current sampling mutual inductor CT, ammeter A, time-delay relay SJ, close
Sensor PA, intermediate relay KM, electric current relay KA, it is characterised in that: intermediate relay KM connection three phase network and motor,
Current sampling mutual inductor CT is connected with any the two of three phase network, carries out for converting low current signal for high current signal
Sampling, ammeter A are connected to the side current sampling mutual inductor CT, time-delay relay SJ and proximity sensor PA, electric current relay
KA concatenates the start and stop for controlling motor.
2. contactless pointer protector according to claim 1, it is characterised in that: the ammeter A is equipped with electric current
List index (2), adjustment movement pointer (1).
3. contactless pointer protector according to claim 1 or 2, it is characterised in that: also set at the top of the ammeter A
There is adjustment to act pointer regulation button (3), and adjustment movement pointer regulation button (3) is fixedly connected with adjustment movement pointer (1).
4. contactless pointer protector according to claim 1, it is characterised in that: the side the ammeter A also concatenates
Sound light crossing-signal.
5. contactless pointer protector according to claim 1, it is characterised in that: adjustment movement pointer (1) is logical
Cross conducting wire connection proximity sensor PA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811050490.0A CN109066595A (en) | 2018-09-10 | 2018-09-10 | Contactless pointer-type protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811050490.0A CN109066595A (en) | 2018-09-10 | 2018-09-10 | Contactless pointer-type protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109066595A true CN109066595A (en) | 2018-12-21 |
Family
ID=64761096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811050490.0A Pending CN109066595A (en) | 2018-09-10 | 2018-09-10 | Contactless pointer-type protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109066595A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205693596U (en) * | 2016-06-29 | 2016-11-16 | 严锡培 | A kind of motor circuit control system and mechanical type pressing filter |
| CN106340855A (en) * | 2016-05-22 | 2017-01-18 | 湖南吉利汽车部件有限公司 | Relay protection control device for motor |
| CN206823717U (en) * | 2017-06-13 | 2018-01-02 | 平原县三兴饲料厂 | A kind of anti-blocking self-con-tained unit of granulator |
-
2018
- 2018-09-10 CN CN201811050490.0A patent/CN109066595A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106340855A (en) * | 2016-05-22 | 2017-01-18 | 湖南吉利汽车部件有限公司 | Relay protection control device for motor |
| CN205693596U (en) * | 2016-06-29 | 2016-11-16 | 严锡培 | A kind of motor circuit control system and mechanical type pressing filter |
| CN206823717U (en) * | 2017-06-13 | 2018-01-02 | 平原县三兴饲料厂 | A kind of anti-blocking self-con-tained unit of granulator |
Non-Patent Citations (1)
| Title |
|---|
| 张杨林 等: "浅谈井下电机的保护与应用", 《矿山机械》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181221 |