CN104076209A - Detection device for motor - Google Patents
Detection device for motor Download PDFInfo
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- CN104076209A CN104076209A CN201410262090.1A CN201410262090A CN104076209A CN 104076209 A CN104076209 A CN 104076209A CN 201410262090 A CN201410262090 A CN 201410262090A CN 104076209 A CN104076209 A CN 104076209A
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- phase
- motor
- power supply
- electrically connected
- phase sequence
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Abstract
The invention discloses a detection device for a motor. The detection device comprises a phase sequence detection module and a first indicator light. A first wiring point of the phase sequence detection module is connected with a first phase of a power supply, a second wiring point of the phase sequence detection module is connected with a second phase of the power supply, a third wiring point of the phase sequence detection module is connected with a third phase of the power supply, and the phase sequence detection module is used for detecting phase sequence connection of the power supply; the output end of the phase sequence detection module is electrically connected with a first switch and controls on and off states of the first switch according to detected phase sequence detection of the power supply; one end of the first switch is electrically connected with a null line, and the other end of the first switch is electrically connected with the motor; the first end of the first indicator light is electrically connected with the first phase of the power supply, and the second end of the first indicator light is electrically connected with the motor. The phase sequence of the power supply is detected through the phase sequence detection module, connection correctness of the phase sequence of the power supply is guaranteed, and the problem that the phase sequence of the power supply is reversely connected, the motor rotates reversely and consequently the service life of the motor is influenced is solved.
Description
Technical field
The present invention relates to electrical equipment detection field, particularly relate to a kind of motor detection apparatus.
Background technology
At present, when motor detects, be conventionally electrically connected with A.C. contactor by the extension line of three-phase supply, the extension line of A.C. contactor is connected with motor, realizes motor for electrical testing.But three-phase supply and motor all have phase sequence.In galvanization, be easy to occur that the phase sequence of motor and the phase sequence of three-phase supply connect the anti-motor reversal that causes, thereby affect the serviceable life of motor.
Summary of the invention
Based on this, while being necessary to detect for motor, occurring that the phase sequence of motor and the phase sequence of three-phase supply connect and instead cause motor reversal and affect the motor problem in serviceable life, a kind of motor detection apparatus is provided.
A kind of motor detection apparatus providing for realizing the object of the invention, comprises phase sequence detection module and the first pilot lamp;
The first wiring point of described phase sequence detection module connects the first-phase of power supply, the second wiring point of described phase sequence detection module connects the second-phase of described power supply, the 3rd wiring point of described phase sequence detection module connects the third phase of described power supply, connects for detection of the phase sequence of described power supply;
The output terminal of described phase sequence detection module is electrically connected with the first switch, connects according to the phase sequence of the described power supply detecting, controls the closure of described the first switch;
One end of described the first switch is electrically connected with zero line, and the other end of described the first switch is electrically connected with motor;
The first end of described the first pilot lamp is electrically connected with the first-phase of described power supply, and the second end of described the first pilot lamp is electrically connected with described motor.
In an embodiment, described phase sequence detection module is phase sequence relay therein.
In an embodiment, the inside of described motor is provided with temperature limiter therein;
The other end of described the first switch is electrically connected with the first link of described temperature limiter;
The first-phase of described power supply is electrically connected with the second link of described temperature limiter.
In an embodiment, also comprise starting switch therein;
The first end of described starting switch is electrically connected with the first-phase of described power supply, and the second end of described starting switch is electrically connected with the first contact of A.C. contactor;
The second contact of described A.C. contactor is electrically connected with the second link of described temperature limiter;
Wherein, described starting switch is knock type switch.
In an embodiment, also comprise emergency stop switch therein;
The first end of described emergency stop switch is electrically connected with the first-phase of described power supply, and the second end of described emergency stop switch is electrically connected with the first end of described starting switch.
In an embodiment, the first end of the normally opened contact of described A.C. contactor is electrically connected with the first end of described starting switch therein;
The second end of described normally opened contact is electrically connected with the second end of described starting switch.
In an embodiment, the first end of the auxiliary normally opened contact of described A.C. contactor is electrically connected with the first-phase of described power supply therein;
The second end of described auxiliary normally opened contact is electrically connected with one end of the second pilot lamp;
The other end of described the second pilot lamp is electrically connected with the first link of described temperature limiter.
In an embodiment, one end of one end of first group of main contact of described A.C. contactor, one end of second group of main contact and the 3rd group of main contact is electrically connected with the second-phase of the first-phase of described power supply, described power supply and the third phase of described power supply respectively therein;
The other end of described first group of main contact of described A.C. contactor, the other end of the other end of described second group of main contact and described the 3rd group of main contact is electrically connected with the second-phase of the first-phase of described motor, described motor and the third phase of described motor respectively.
In an embodiment, described temperature limiter is thermal protector therein.
The beneficial effect of above-mentioned motor detection apparatus is: by phase sequence detection module and the first pilot lamp are set; Whether the first wiring point, the second wiring point and the 3rd wiring point of phase sequence detection module are electrically connected with first-phase, second-phase and the third phase of power supply respectively, connect correct for detection of the phase sequence of power supply.The output terminal of phase sequence detection module is electrically connected with the first switch, when detecting the phase sequence of power supply, phase sequence detection module connects when correct, control the first switch closure, thereby the loop being made up of first-phase, the first pilot lamp, motor, the first switch and the zero line of power supply is close access, make the first pilot lamp bright, phase sequence with prompting testing staff power supply connects correctly, can detect motor.It is before carrying out motor detection, detect to the phase sequence connection of the power supply of motor power supply by phase sequence detection module, and the testing result being connected by the phase sequence of the first pilot lamp prompting testing staff power supply, ensure the correctness of the phase sequence connection of the power supply of access motor, thereby effectively avoid the phase sequence of power supply and the phase sequence of motor to connect the anti-motor reversal that causes, affected the problem in the serviceable life of motor.
Brief description of the drawings
Fig. 1 is motor detection apparatus one specific embodiment circuit diagram.
Embodiment
For making technical solution of the present invention clearer, below in conjunction with drawings and the specific embodiments, the present invention is described in further details.
Referring to Fig. 1, as the motor detection apparatus of a specific embodiment, comprise phase sequence detection module PM and the first pilot lamp HL1.Wherein:
The first wiring point L1 of phase sequence detection module PM connects the first-phase L1 ' of power supply, and the second wiring point L2 of phase sequence detection module PM connects the second-phase L2 ' of power supply, and the 3rd wiring point L3 of phase sequence detection module PM connects the third phase L3 ' of power supply.By the first wiring point L1, the second wiring point L2 and the 3rd wiring point L3 first-phase L1 ', second-phase L2 ' and the third phase L3 ' of electric connection of power supply respectively of phase sequence detection module PM, realize the whether correct object of phase sequence connection that detects power supply.
The output terminal of phase sequence detection module PM is electrically connected with the first K switch 1, connects according to the phase sequence of the power supply detecting, controls the closure of the first K switch 1.
Wherein the first K switch 1 can be normal open switch.As: connect when correct when phase sequence detection module PM detects the phase sequence of power supply, control the first K switch 1 closure; In the time that phase sequence detection module PM detects that the phase sequence malunion of power supply is true, the first K switch 1 remains open state.
One end of the first K switch 1 is electrically connected with zero line N, and the other end of the first K switch 1 is electrically connected with motor M.
The first end of the first pilot lamp HL1 is electrically connected with the first-phase L1 ' of power supply, and the second end of the first pilot lamp HL1 is electrically connected with motor M.Make first-phase L1 ', the first pilot lamp HL1, motor M, the first K switch 1 and a loop of zero line N composition of power supply.
When detecting the phase sequence of power supply, phase sequence detection module PM connects when correct, the first K switch 1 closure, thereby making the loop of first-phase L1 ', the first pilot lamp HL1, motor M, the first K switch 1 and the zero line N combination of power supply is close access, the first pilot lamp HL1 has electric current process, thereby make the first pilot lamp HL1 bright, the phase sequence of prompting testing staff motor M connects correct (phase sequence that is power supply connects with the phase sequence of motor M consistent) with the phase sequence of power supply, can carry out the detection of motor M (being load to be measured).
In the time that phase sequence detection module PM detects that the phase sequence malunion of power supply is true, the first K switch 1 remains open state, the loop of being combined by first-phase L1 ', the first pilot lamp HL1, motor M, the first K switch 1 and the zero line N of power supply is for opening circuit, the first pilot lamp HL1 does not work, thereby the phase sequence connection of prompting testing staff power supply may connect anti-, need to adjust the position of the connecting line of power supply, until the first pilot lamp HL1 is bright.It has avoided connecing instead due to the phase sequence of power supply and the phase sequence of motor M effectively, causes the phenomenon of motor M reversion, has solved the problem shortening in serviceable life of motor M.
Wherein, it should be noted that, phase sequence detection module PM can be phase sequence relay.
When detecting by phase sequence detection module PM after the phase sequence connection correctly of power supply, can carry out upper electro-detection to motor M.Motor M is powered in testing process, as the present invention's one specific embodiment, the inside of motor M is provided with temperature limiter, the self-protection function when realizing motor M operational process excess Temperature.Wherein, the other end of the first K switch 1 is electrically connected with the first link T2 of temperature limiter.
The first-phase of power supply is electrically connected with the second link T1 of temperature limiter.
By the inside in motor M, temperature limiter is set, makes in the time moving under the power supply of motor M at power supply, if motor M overload operation, motor M heating is too high, and temperature reaches after the protection value of temperature limiter, and the contact of temperature limiter disconnects automatically, and motor M is out of service.Treat motor M a period of time out of service, after temperature dropped to a certain extent, the contact of temperature limiter is automatically closed, and motor M, again in power supply state, is moved automatically.
Wherein, temperature limiter can be the built-in thermal protector of motor M.
Although by thermal protector (being temperature limiter), the self-protection function while having realized motor M excess Temperature are set in motor M.But the repetition start and stop of motor M also can affect the serviceable life of motor M.And be easy to the false judgment of the testing result that causes motor M, affect the test findings of motor M temperature rise test.
For avoiding motor M to repeat start and stop, cause the problem of motor M testing result erroneous judgement, as the motor detection apparatus of a specific embodiment, also comprise starting switch S1.Wherein, starting switch S1 is knock type switch.
The first end 11 of starting switch S1 is electrically connected with the first-phase L1 ' of power supply, and the second end 12 of starting switch S1 is electrically connected with the first contact A1 of A.C. contactor KM1.
The second contact A2 of A.C. contactor KM1 is electrically connected with the second link T1 of temperature limiter.
By the starting switch S1 of knock type is set between A.C. contactor KM1 and power supply, when phase sequence detection module PM detect the phase sequence of power supply connect correct after, the artificial starting switch S1 that presses.Now, power supply and contactor KM1 path, contactor KM1 obtains electric, motor M operation.
After motor M operation a period of time, when the protection value of temperature limiter is arrived in temperature rise, the contact of temperature limiter disconnects, A.C. contactor KM1 dead electricity, and motor M is out of service.When after motor M certain hour out of service, temperature drops to a certain degree.Now, because the starting switch S1 that controls power supply and A.C. contactor KM1 connection is knock type switch, therefore, must be artificial press starting switch S1, just can make power supply and A.C. contactor KM1 reclose, A.C. contactor KM1 be obtained electric, realize the operation again of motor M.The automatic operation that it has avoided the built-in temperature limiter of motor M to recover rear motor M, has prevented the repetition start and stop of motor M, causes the phenomenon of the testing result erroneous judgement to motor M temperature rise test.Meanwhile, also solve motor M and repeated start and stop and affect the problem in the serviceable life of motor M, prevented that motor from recovering the unnecessary electrical safety accident that startup causes automatically.
At this, it should be noted that, the first end 13 of the normally opened contact KM1 ' of A.C. contactor KM1 is electrically connected with the first end 11 of starting switch S1; The second end 14 of the normally opened contact KM1 ' of A.C. contactor KM1 is electrically connected with the second end 12 of starting switch S1.
The auxiliary normally opened contact KM1 of A.C. contactor KM1 " ' first end 15 be electrically connected with the first-phase L1 ' of power supply; The auxiliary normally opened contact KM1 of A.C. contactor KM1 " ' the second end 16 be electrically connected with one end of the second pilot lamp HL2.
The other end of the second pilot lamp HL2 is electrically connected with the first link T2 of temperature limiter.
Wherein, the run indicator that the second pilot lamp HL2 is motor M.When the second pilot lamp HL2 is when bright, show that motor M is in running status; In the time that the second pilot lamp HL2 does not work, show that motor M is in halted state.
Referring to Fig. 1, it should be noted that, A.C. contactor KM1 comprises three groups of main contact KM1 ", wherein:
Three groups of main contact KM1 of A.C. contactor KM1 " in one end 1, second group of one end 3 of main contact and one end 5 of the 3rd group of main contact of first group of main contact be electrically connected with first-phase L1 ', the second-phase L2 ' of power supply and the third phase L3 ' of power supply of power supply respectively.
Wherein, three of A.C. contactor KM1 groups of main contact KM1 " in one end 1, second group of one end 3 of main contact and one end 5 of the 3rd group of main contact of first group of main contact can realize respectively and first-phase L1 ', the second-phase L2 ' of power supply of power supply and being electrically connected of the third phase L3 ' of power supply by the first connection terminal XT1.
Three groups of main contact KM1 of A.C. contactor KM1 " in the other end 4 of 2, the second groups of main contacts of the other end and the other end 6 of the 3rd group of main contact of first group of main contact be electrically connected with first-phase, the second-phase of motor M and the third phase of motor M of motor M respectively.
Wherein, three groups of main contact KM1 of A.C. contactor KM1 " in the other end 4 of 2, the second groups of main contacts of the other end of first group of main contact and 6 of the other ends of the 3rd group of main contact can realize respectively and being electrically connected of first-phase, the second-phase of motor M and the third phase of motor M of motor M by the second connection terminal XT2.
Wherein, the second-phase of the first-phase of motor M, motor M and the third phase of motor M can be respectively: U phase, V phase and W phase.
After phase sequence detection module PM detects that the phase sequence of power supply connects correctly, press artificially starting switch S1.When pressing after starting switch S1, A.C. contactor KM1 is communicated with the first-phase L1 ' of power supply.The sucking coil energising of A.C. contactor KM1, makes the static iron core of A.C. contactor KM1 produce electromagnetic attraction, will move iron core adhesive.Due to the contact system of A.C. contactor KM1 (three groups of main contact KM1 ", normally opened contact KM1 ' and auxiliary normally opened contact KM1 " ') with moving iron core be interlock.Therefore,, when after moving iron core and static iron core adhesive, drive three groups of main contact KM1 of A.C. contactor KM1 " (first group of main contact, second group of main contact and the 3rd group of main contact), normally opened contact KM1 ' and auxiliary normally opened contact KM1 " ' move simultaneously.Three groups of main contact KM1 ", normally opened contact KM1 ' and auxiliary normally opened contact KM1 " ' all closed.Power supply and motor M are connected, and motor M obtains electric operation.And, by the auxiliary normally opened contact KM1 of first-phase L1 ', the A.C. contactor KM1 of power supply " ', the loop that forms of the second pilot lamp HL2, the first link T2, the first K switch 1 and the zero line N of temperature limiter is close access; the second pilot lamp HL2 is bright, and prompting motor M is in running status.
When motor M operation a period of time; temperature rise is to the protection value of temperature limiter; temperature limiter disconnects automatically; the sucking coil dead electricity of corresponding A.C. contactor KM1; moving iron core separates with static iron core; drive three groups of main contact KM1 of A.C. contactor KM1 ", normally opened contact KM1 ' and auxiliary normally opened contact KM1 " ' all disconnections, motor M and electric power disconnection, motor M is out of service.Now, by the auxiliary normally opened contact KM1 of first-phase L1 ', the A.C. contactor KM1 of power supply " ', the loop that forms of the first link T2, the first K switch 1 and the zero line N of the second pilot lamp HL2, temperature limiter is for opening circuit.Therefore, the second pilot lamp HL2 goes out, and prompting motor M is in run-stopping status.
When after motor M a period of time out of service, temperature drops to a certain degree, although now temperature limiter recovers automatically, but because starting switch S1 is knock type switch, must press artificially this starting switch S1, just can make A.C. contactor KM1 sucking coil obtain electric, make three groups of main contact KM1 of A.C. contactor KM1 ", normally open contact KM1 ' and auxiliary normally open contact KM1 " ' simultaneously closed, realize the operation again of motor M.The automatic startup that it has avoided the automatic recovery drive motor M of the built-in temperature limiter of motor M, has prevented that motor M from repeating start and stop and affecting the phenomenon in its serviceable life, has ensured the accuracy of motor M temperature rise test result.
When motor M is in the time that run duration occurs except temperature rise to abnormal conditions the protection value of temperature limiter, owing to can not stopping immediately motor M operation, make motor M under abnormal conditions, continue maintenance running status, can affect equally the serviceable life of motor M.Therefore,, as the motor detection apparatus of another specific embodiment, also comprise emergency stop switch S2.The first end 17 of emergency stop switch S2 is electrically connected with the first-phase L1 ' of power supply, and the second end 18 of emergency stop switch S2 is electrically connected with the first end 11 of starting switch S1.
By by between emergency stop switch S2 setting and the first-phase L1 ' and starting switch S1 of power supply, make first-phase L1 ', the emergency stop switch S2 of power supply and starting switch S1 be in series.In the time there are abnormal conditions in motor M operation, can control emergency stop switch S2 and disconnect, force motor M out of service, guarantee the security of motor M operation and the reliability that motor M is detected.Meanwhile, avoided the misoperation of motor M to affect the problem in the serviceable life of motor M.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. a motor detection apparatus, is characterized in that, comprises phase sequence detection module and the first pilot lamp;
The first wiring point of described phase sequence detection module connects the first-phase of power supply, the second wiring point of described phase sequence detection module connects the second-phase of described power supply, the 3rd wiring point of described phase sequence detection module connects the third phase of described power supply, connects for detection of the phase sequence of described power supply;
The output terminal of described phase sequence detection module is electrically connected with the first switch, connects according to the phase sequence of the described power supply detecting, controls the closure of described the first switch;
One end of described the first switch is electrically connected with zero line, and the other end of described the first switch is electrically connected with motor;
The first end of described the first pilot lamp is electrically connected with the first-phase of described power supply, and the second end of described the first pilot lamp is electrically connected with described motor.
2. motor detection apparatus according to claim 1, is characterized in that, described phase sequence detection module is phase sequence relay.
3. motor detection apparatus according to claim 1, is characterized in that, the inside of described motor is provided with temperature limiter;
The other end of described the first switch is electrically connected with the first link of described temperature limiter;
The first-phase of described power supply is electrically connected with the second link of described temperature limiter.
4. motor detection apparatus according to claim 3, is characterized in that, also comprises starting switch;
The first end of described starting switch is electrically connected with the first-phase of described power supply, and the second end of described starting switch is electrically connected with the first contact of A.C. contactor;
The second contact of described A.C. contactor is electrically connected with the second link of described temperature limiter;
Wherein, described starting switch is knock type switch.
5. motor detection apparatus according to claim 4, is characterized in that, also comprises emergency stop switch;
The first end of described emergency stop switch is electrically connected with the first-phase of described power supply, and the second end of described emergency stop switch is electrically connected with the first end of described starting switch.
6. according to the motor detection apparatus described in claim 4 or 5, it is characterized in that, the first end of the normally opened contact of described A.C. contactor is electrically connected with the first end of described starting switch;
The second end of described normally opened contact is electrically connected with the second end of described starting switch.
7. motor detection apparatus according to claim 6, is characterized in that, the first end of the auxiliary normally opened contact of described A.C. contactor is electrically connected with the first-phase of described power supply;
The second end of described auxiliary normally opened contact is electrically connected with one end of the second pilot lamp;
The other end of described the second pilot lamp is electrically connected with the first link of described temperature limiter.
8. motor detection apparatus according to claim 7, it is characterized in that, one end of one end of first group of main contact of described A.C. contactor, one end of second group of main contact and the 3rd group of main contact is electrically connected with the second-phase of the first-phase of described power supply, described power supply and the third phase of described power supply respectively;
The other end of described first group of main contact of described A.C. contactor, the other end of the other end of described second group of main contact and described the 3rd group of main contact is electrically connected with the second-phase of the first-phase of described motor, described motor and the third phase of described motor respectively.
9. according to the motor detection apparatus described in claim 3 to 5 any one, it is characterized in that, described temperature limiter is thermal protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262090.1A CN104076209B (en) | 2014-06-12 | 2014-06-12 | Motor detection apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262090.1A CN104076209B (en) | 2014-06-12 | 2014-06-12 | Motor detection apparatus |
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| CN104076209A true CN104076209A (en) | 2014-10-01 |
| CN104076209B CN104076209B (en) | 2016-08-17 |
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| CN201410262090.1A Active CN104076209B (en) | 2014-06-12 | 2014-06-12 | Motor detection apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849815A (en) * | 2016-11-22 | 2017-06-13 | 辽宁东鹰航空装备科技股份有限公司 | Electromotor control circuit |
| CN106896278A (en) * | 2017-04-27 | 2017-06-27 | 湖北睿能电气有限公司 | A kind of intelligent phase sequence identifying device |
| CN113777538A (en) * | 2020-06-09 | 2021-12-10 | 光宝电子(广州)有限公司 | Test fixture and detection method using same |
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| CN101943718A (en) * | 2010-08-27 | 2011-01-12 | 河南省电力公司洛阳供电公司 | Phase sequence detection method and device of three-phase alternating current |
| CN203117305U (en) * | 2013-03-01 | 2013-08-07 | 珠海格力电器股份有限公司 | Three-phase load debug control circuit |
| CN203536956U (en) * | 2013-10-22 | 2014-04-09 | 澳柯玛股份有限公司 | Three-phase alternating current phase sequence error correction device |
| CN204028321U (en) * | 2014-06-12 | 2014-12-17 | 珠海格力电器股份有限公司 | Motor detection apparatus |
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| JPH09229977A (en) * | 1996-02-20 | 1997-09-05 | Kyushu Electric Power Co Inc | Phase detector for uninterruptible power supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106849815A (en) * | 2016-11-22 | 2017-06-13 | 辽宁东鹰航空装备科技股份有限公司 | Electromotor control circuit |
| CN106849815B (en) * | 2016-11-22 | 2023-07-21 | 辽宁东鹰航空装备科技股份有限公司 | Motor control circuit |
| CN106896278A (en) * | 2017-04-27 | 2017-06-27 | 湖北睿能电气有限公司 | A kind of intelligent phase sequence identifying device |
| CN106896278B (en) * | 2017-04-27 | 2019-07-05 | 湖北睿能电气有限公司 | A kind of intelligence phase sequence identification device |
| CN113777538A (en) * | 2020-06-09 | 2021-12-10 | 光宝电子(广州)有限公司 | Test fixture and detection method using same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104076209B (en) | 2016-08-17 |
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