CN210273480U - 10kV motor starting cabinet control circuit - Google Patents
10kV motor starting cabinet control circuit Download PDFInfo
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- CN210273480U CN210273480U CN201921337740.9U CN201921337740U CN210273480U CN 210273480 U CN210273480 U CN 210273480U CN 201921337740 U CN201921337740 U CN 201921337740U CN 210273480 U CN210273480 U CN 210273480U
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- 230000000903 blocking effect Effects 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 230000007547 defect Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of motor starting cabinet control, in particular to a 10kV motor starting cabinet control circuit, which comprises a phase line L and a zero line N, wherein a voltage loss tripping module and an emergency shutdown auxiliary control module are connected in parallel between the phase line L and the zero line N; the no-voltage tripping module is connected with a phase line L through a port 43 and is connected with a zero line N through a port 44, and comprises a rectifier V5, a rectifier V6, a resistor R4, a resistor R6, an under-voltage tripping coil Y4, an under-voltage locking coil Y6, an auxiliary switch QF1 and a microswitch S6, wherein: pin 1 of the rectifier V6 is coupled to pin 2 thereof through an under-voltage blocking coil Y6 and a resistor R6 in sequence, pin 4 of the rectifier V6 is coupled to the port 43, and pin 2 of the rectifier V6 is coupled to the port 44. The utility model discloses eliminated the power transmission safety defect and the malfunctioning defect of separating brake that 9 at scene 10kV motor starting cabinets exist.
Description
Technical Field
The utility model relates to a motor starting cabinet control technical field, in particular to 10kV motor starting cabinet control scheme.
Background
3 that current production area field was installed 780kW air compressors and 6 pieces 560kW circulating water pump, the use is 10kV high tension motor, and there are two defects in the 10kV motor start cabinet actual operation in-process:
and power transmission safety defect. When the power grid fluctuates and the system has power failure, no voltage loss tripping can be realized, and the vacuum circuit breakers in the on-site 9-10 kV motor starting cabinet are still kept at the closed position; after the standby power is supplied, the on-site 10kV motor can be started instantly and simultaneously, the 10kV standby power main switch can be tripped again by huge starting impact current, and the standby power can be supplied only after the vacuum circuit breaker in the on-site 10kV motor starting cabinet needs to be manually stopped one by one. The whole operation process can delay the standby power utilization and power transmission time, and safety accidents are easy to happen.
The defect of brake-off failure. When the air compressor and the circulating water pump have lubricating system faults or mechanical part faults, emergency shutdown is needed, and meanwhile clamping stagnation failure occurs in a brake separating mechanism of a vacuum circuit breaker of a field 10kV motor starting cabinet, the emergency shutdown cannot be realized, and serious equipment damage accidents of the air compressor and the circulating water pump can be caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: in order to solve the power transmission safety and the malfunctioning defect of separating brake that exist among the above-mentioned 10kV motor starting cabinet actual operation process, the utility model provides a 10kV motor starting cabinet control scheme.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a10 kV motor starting cabinet control circuit comprises a phase line L and a zero line N, wherein a no-voltage tripping module and an emergency shutdown auxiliary control module are connected in parallel between the phase line L and the zero line N;
the no-voltage tripping module is connected with a phase line L through a port 43 and is connected with a zero line N through a port 44, and comprises a rectifier V5, a rectifier V6, a resistor R4, a resistor R6, an under-voltage tripping coil Y4, an under-voltage locking coil Y6, an auxiliary switch QF1, a microswitch S6 and a capacitor C, wherein:
one end of the capacitor C is coupled to a pin 1 of the rectifier V5, and the other end of the capacitor C is coupled to a pin 2 of the rectifier V5; one end of the resistor R4 is coupled to pin 1 of the rectifier V5, and the other end is coupled to pin 2 of the rectifier V5; one end of the under-voltage trip coil Y4 is coupled to a pin 1 of a rectifier V5, and the other end is coupled to a pin 2 of a rectifier V5 through a microswitch S6 and an auxiliary switch QF1 in sequence;
pin 4 of the rectifier V5 is coupled to port 43, and pin 2 of the rectifier V5 is coupled to port 44;
the emergency shutdown auxiliary control module comprises a 13# line, an intermediate relay ZJ1, an intermediate relay ZJ2, a time relay KT1, a time relay KT2, an auxiliary switch QF2, an auxiliary switch QF3, a contact A of a time relay KT1, a contact B of a time relay KT2, a contact C of an intermediate relay ZJ1, a contact D of an intermediate relay ZJ2, a separating brake coil 2TQ and a switch 2SA, wherein:
the input end of the intermediate relay ZJ1 is coupled with a 13# line through a contact B, and the output end of the intermediate relay ZJ1 is coupled with a zero line N through an auxiliary switch QF 2;
the input end of the time relay KT1 is coupled with a phase line L through a contact C, the input end is simultaneously coupled with a 13# line, and the output end is coupled with a zero line N;
the input end of the time relay KT2 is coupled with a phase line L through a contact C, the input end is simultaneously coupled with a 13# line, and the output end is coupled with a zero line N;
the input end of the intermediate relay ZJ2 is coupled with a phase line L sequentially through a contact A and a contact C, the input end is coupled with a 13# line through the contact A, and the output end is coupled with a zero line N through an auxiliary switch QF 3;
one end of the contact D is coupled with the positive electrode of the direct current power supply, and the other end of the contact D is coupled with the negative electrode of the direct current power supply through the brake separating coil 2 TQ.
Further, one end of the microswitch S6 is coupled to the undervoltage trip coil Y4, and the other end is coupled to the auxiliary switch QF 1.
Further, one end of the auxiliary switch QF1 is coupled to the micro switch S6, and the other end is coupled to pin 3 of the rectifier V5.
Further, one end of the contact a is coupled to the contacts C and 13# line, and the other end is coupled to the input end of the intermediate relay ZJ 2.
Furthermore, one end of the auxiliary switch QF3 is coupled to the output end of the intermediate relay ZJ2, and the other end is coupled to the neutral wire N.
Furthermore, one end of the switch 2SA is coupled to the positive electrode of the dc power supply, and the other end is coupled to the negative electrode of the dc power supply through the switching-off coil 2 TQ.
To sum up, the utility model discloses following beneficial effect has:
the power transmission safety defect and the brake-separating failure defect of the 9-station 10kV motor starting cabinet on the spot are eliminated, and when the power grid fluctuates and the system has power failure, the impulse current of standby power can be reduced, and the power transmission safety during secondary power transmission is ensured.
When the on-site vacuum circuit breaker has brake-separating failure, the corresponding outgoing line switch arranged on a 10kV bus of the transformer substation can be rapidly separated, emergency shutdown is realized, and equipment damage accidents are avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below.
FIG. 1 is a first part of a schematic diagram of a 10kV motor starting cabinet control line connection;
FIG. 2 is a second portion of a schematic diagram of a 10kV motor starting cabinet control circuit connection;
FIG. 3 is a schematic circuit connection diagram of the outgoing line switches #071- # 079;
FIG. 4 is a schematic diagram of the connection of internal lines of a 10kV motor starting cabinet;
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and fig. 3, a 10kV motor starting cabinet control circuit includes a phase line L, a zero line N, and a voltage loss tripping module and an emergency shutdown auxiliary control module connected in parallel between the phase line L and the zero line N;
the voltage-loss tripping module is connected with a phase line L through a port 43 and is connected with a zero line N through a port 44, and comprises a rectifier V5, a rectifier V6, a resistor R4, a resistor R6, an undervoltage tripping coil Y4, an undervoltage locking coil Y6, an auxiliary switch QF1, a microswitch S6 and a capacitor C, wherein:
one end of the capacitor C is coupled to pin 1 of the rectifier V5, and the other end is coupled to pin 2 of the rectifier V5; one end of the resistor R4 is coupled to pin 1 of the rectifier V5, and the other end is coupled to pin 2 of the rectifier V5; one end of the undervoltage trip coil Y4 is coupled to a pin 1 of a rectifier V5, the other end of the undervoltage trip coil Y4 is coupled to a pin 2 of a rectifier V5 sequentially through a microswitch S6 and an auxiliary switch QF1, one end of the microswitch S6 is coupled to an undervoltage trip coil Y4, the other end of the microswitch S6 is coupled to an auxiliary switch QF1, and one end of the auxiliary switch QF1 is coupled to a microswitch S6; and the other end is coupled to pin 3 of rectifier V5.
Pin 4 of rectifier V5 is coupled to port 43, pin 2 of rectifier V5 is coupled to port 44;
a no-voltage tripping device is additionally arranged in a field 10kV motor starting cabinet in a modifying mode, so that when power failure is caused by power grid fluctuation, no-voltage tripping is carried out, and safety of secondary power transmission is guaranteed.
The working principle of the voltage-loss tripping module is as follows: when power failure occurs due to power grid fluctuation, the on-site vacuum circuit breaker 1QF-9QF is disconnected through the action of the no-voltage tripping coil Y4.
Referring to fig. 2 to 4, the emergency stop auxiliary control module includes a 13# line, an intermediate relay ZJ1, an intermediate relay ZJ2, a time relay KT1, a time relay KT2, an auxiliary switch QF2, an auxiliary switch QF3, a contact a of a time relay KT1, a contact B of a time relay KT2, a contact C of an intermediate relay ZJ1, a contact D of an intermediate relay ZJ2, a switching coil 2TQ, and a switch 2SA, wherein: the input end of the intermediate relay ZJ1 is coupled with the 13# line through a contact B, and the output end of the intermediate relay ZJ1 is coupled with the zero line N through an auxiliary switch QF 2;
the input end of the time relay KT1 is coupled with a phase line L through a contact C, the end is simultaneously coupled with a 13# line, and the output end of the time relay KT1 is coupled with a zero line N; the input end of the time relay KT2 is coupled with a phase line L through a contact C, the end is simultaneously coupled with a 13# line, and the output end of the time relay KT2 is coupled with a zero line N; the input end of the intermediate relay ZJ2 is coupled to the phase line L through the contact A and the contact C in sequence, the end is coupled to the 13# line through the contact A, the output end is coupled to the zero line N through the auxiliary switch QF3, and one end of the contact A is coupled to the contact C and the 13# line respectively. The other end is coupled with the input end of the intermediate relay ZJ 2.
One end of the contact D is coupled with the positive electrode of the direct-current power supply, the other end of the contact D is coupled with the negative electrode of the direct-current power supply through a brake separating coil 2TQ, one end of the auxiliary switch QF3 is coupled with the output end of the intermediate relay ZJ2, and the other end of the auxiliary switch QF3 is coupled with a zero line N; one end of the switch 2SA is coupled to the positive electrode of the dc power supply, and the other end is coupled to the negative electrode of the dc power supply through the switching-off coil 2 TQ.
When the clamping stagnation failure occurs in the opening mechanism of the vacuum circuit breaker of the on-site 10kV motor starting cabinet and emergency shutdown cannot be realized, after the time delay of the time relay KT1 is 2 seconds, the intermediate relay ZJ2 is actuated to push the corresponding outlet switch arranged on a 10kV bus of a 110kV transformer substation to be opened, and the emergency shutdown is realized.
The working principle of the emergency stop auxiliary control module is as follows: when a stop button TA is pressed down to carry out emergency stop, the 13# line is electrified, the opening coil TQ is closed in an attracting mode, and the on-site vacuum circuit breaker QF (in the embodiment, the vacuum circuit breaker refers to a vacuum circuit breaker 1QF-9QF) is opened; if the opening mechanism is blocked and the opening is failed, normally-open auxiliary switches QF2 and QF3 of the vacuum circuit breaker are still kept connected, an intermediate relay ZJ1 is enabled to work, a contact C is closed, time relays KT1 and KT2 work, after time delay of the time relay KT1 is carried out for 2 seconds, a contact A is closed, an intermediate relay ZJ2 is attracted, a contact D is closed, an opening coil 2TQ is attracted, a corresponding outlet switch (#071- #079) on a 10kV bus of the transformer substation is pushed to be disconnected, after time delay of the time relay KT2 is carried out for 4 seconds, a contact B is disconnected, an intermediate relay ZJ1 is disconnected, meanwhile, an intermediate relay ZJ2 is disconnected, and emergency stop is completed.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will appreciate that; the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (6)
1. A10 kV motor starting cabinet control circuit comprises a phase line L and a zero line N, and is characterized in that a no-voltage tripping module and an emergency shutdown auxiliary control module are connected in parallel between the phase line L and the zero line N;
the no-voltage tripping module is connected with a phase line L through a port 43 and is connected with a zero line N through a port 44, and comprises a rectifier V5, a rectifier V6, a resistor R4, a resistor R6, an under-voltage tripping coil Y4, an under-voltage locking coil Y6, an auxiliary switch QF1, a microswitch and a capacitor C, wherein:
pin 1 of the rectifier V6 is coupled to pin 2 thereof through an under-voltage blocking coil Y6 and a resistor R6 in sequence, pin 4 of the rectifier V6 is coupled to the port 43, and pin 2 of the rectifier V6 is coupled to the port 44;
one end of the capacitor C is coupled to a pin 1 of the rectifier V5, and the other end of the capacitor C is coupled to a pin 2 of the rectifier V5; one end of the resistor R4 is coupled to pin 1 of the rectifier V5, and the other end is coupled to pin 2 of the rectifier V5; one end of the under-voltage trip coil Y4 is coupled to a pin 1 of a rectifier V5, and the other end is coupled to a pin 2 of a rectifier V5 through a microswitch S6 and an auxiliary switch QF1 in sequence;
pin 4 of the rectifier V5 is coupled to port 43, and pin 2 of the rectifier V5 is coupled to port 44;
the emergency shutdown auxiliary control module comprises a 13# line, an intermediate relay ZJ1, an intermediate relay ZJ2, a time relay KT1, a time relay KT2, an auxiliary switch QF2, an auxiliary switch QF3, a contact A of a time relay KT1, a contact B of a time relay KT2, a contact C of an intermediate relay ZJ1, a contact D of an intermediate relay ZJ2, a separating brake coil 2TQ and a switch 2SA, wherein:
the input end of the intermediate relay ZJ1 is coupled with a 13# line through a contact B, and the output end of the intermediate relay ZJ1 is coupled with a zero line N through an auxiliary switch QF 2;
the input end of the time relay KT1 is coupled with a phase line L through a contact C, the input end is simultaneously coupled with a 13# line, and the output end is coupled with a zero line N;
the input end of the time relay KT2 is coupled with a phase line L through a contact C, the input end is simultaneously coupled with a 13# line, and the output end is coupled with a zero line N;
the input end of the intermediate relay ZJ2 is coupled with a phase line L sequentially through a contact A and a contact C, the input end is coupled with a 13# line through the contact A, and the output end is coupled with a zero line N through an auxiliary switch QF 3;
one end of the contact D is coupled with the positive electrode of the direct current power supply, and the other end of the contact D is coupled with the negative electrode of the direct current power supply through the brake separating coil 2 TQ.
2. The control circuit of claim 1, wherein the microswitch S6 is coupled to the undervoltage trip coil Y4 at one end and to the auxiliary switch QF1 at the other end.
3. The 10kV motor starting cabinet control circuit according to claim 1, wherein one end of the auxiliary switch QF1 is coupled to a microswitch S6, and the other end is coupled to pin 3 of a rectifier V5.
4. The 10kV motor starting cabinet control circuit according to claim 1, wherein one end of the contact A is coupled to the contact C and the 13# line, and the other end is coupled to an input end of an intermediate relay ZJ 2.
5. The 10kV motor starting cabinet control circuit according to claim 1, wherein one end of the auxiliary switch QF3 is coupled to the output end of the intermediate relay ZJ2, and the other end is coupled to the zero line N.
6. A 10kV motor starting cabinet control circuit according to claim 1, wherein one end of the switch 2SA is coupled to the positive pole of the dc power supply, and the other end is coupled to the negative pole of the dc power supply through the breaking coil 2 TQ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921337740.9U CN210273480U (en) | 2019-08-16 | 2019-08-16 | 10kV motor starting cabinet control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921337740.9U CN210273480U (en) | 2019-08-16 | 2019-08-16 | 10kV motor starting cabinet control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN210273480U true CN210273480U (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921337740.9U Active CN210273480U (en) | 2019-08-16 | 2019-08-16 | 10kV motor starting cabinet control circuit |
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|---|---|
| CN (1) | CN210273480U (en) |
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2019
- 2019-08-16 CN CN201921337740.9U patent/CN210273480U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A control circuit of 10kV motor starting cabinet Effective date of registration: 20210104 Granted publication date: 20200407 Pledgee: Jiyuan branch of Bank of Communications Co.,Ltd. Pledgor: Henan Lianchuang Chemical Co.,Ltd. Registration number: Y2020980010523 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210705 Granted publication date: 20200407 Pledgee: Jiyuan branch of Bank of Communications Co.,Ltd. Pledgor: Henan Lianchuang Chemical Co.,Ltd. Registration number: Y2020980010523 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A control circuit of 10kV motor starting cabinet Effective date of registration: 20211029 Granted publication date: 20200407 Pledgee: Industrial and Commercial Bank of China Limited Jiyuan branch Pledgor: Henan Lianchuang Chemical Co.,Ltd. Registration number: Y2021980011583 |
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Date of cancellation: 20220916 Granted publication date: 20200407 Pledgee: Industrial and Commercial Bank of China Limited Jiyuan branch Pledgor: Henan Lianchuang Chemical Co.,Ltd. Registration number: Y2021980011583 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A 10kV motor starting cabinet control circuit Effective date of registration: 20221117 Granted publication date: 20200407 Pledgee: Industrial and Commercial Bank of China Limited Jiyuan branch Pledgor: Henan Lianchuang Chemical Co.,Ltd. Registration number: Y2022980022040 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
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Date of cancellation: 20231030 Granted publication date: 20200407 Pledgee: Industrial and Commercial Bank of China Limited Jiyuan branch Pledgor: Henan Lianchuang Chemical Co.,Ltd. Registration number: Y2022980022040 |