CN211791350U - A electrical control system for breeding trade fan frequency conversion - Google Patents
A electrical control system for breeding trade fan frequency conversion Download PDFInfo
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- CN211791350U CN211791350U CN202020898039.0U CN202020898039U CN211791350U CN 211791350 U CN211791350 U CN 211791350U CN 202020898039 U CN202020898039 U CN 202020898039U CN 211791350 U CN211791350 U CN 211791350U
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Abstract
The utility model relates to an electrical control system for breeding trade fan frequency conversion, outside alternating current power supply is connected to the input of converter and the normally open main contact input of power frequency contactor, frequency conversion contactor's normally open main contact input is connected to the output of converter, the input of fan is connected respectively to frequency conversion contactor's normally open main contact output and power frequency contactor's normally open main contact output, PLC's output is connected respectively to frequency conversion relay's coil and power frequency relay's coil, PLC's input is connected respectively to power frequency contactor's normally open auxiliary contact, the frequency conversion starts the branch road including the normally open contact of the frequency conversion relay who establishes ties, frequency conversion contactor's coil, power frequency contactor's normally closed auxiliary contact, the power frequency starts the branch road including the normally open contact of the power frequency relay who establishes ties, motor protector's normally, And a normally closed auxiliary contact of the variable frequency contactor. This practicality is by a converter control multi-fan, reduce system cost, and the operation is reliable and stable.
Description
Technical Field
The utility model relates to a breed trade fan electrical control technical field, especially relate to an electrical control system for breeding trade fan frequency conversion.
Background
Along with the popularization and the promotion of the automatic control system, in the breeding industry, the electric control part shares very important responsibility, the breeding efficiency can be greatly improved, the labor cost can be reduced, and the breeding cost is saved.
The existing electric control system for fan frequency conversion in the breeding industry is mainly realized by controlling one fan by one frequency converter, when the condition that the breeding scale is large is involved, a plurality of frequency converters are required to be arranged to respectively carry out frequency conversion control on respective fans, the control system is not only complex in control loop and large in wiring amount, but also greatly increases the breeding production cost, and meanwhile, the protection capability is poor when the control system breaks down.
Disclosure of Invention
In view of this, the utility model aims at providing an electrical control system for breeding trade fan frequency conversion, its control circuit is succinct, walks the line wiring convenient, adopts a converter to realize the frequency conversion control of many fans moreover to reduce and breed manufacturing cost.
In order to achieve the above purpose, the utility model adopts such an electrical control system for breeding industry fan frequency conversion, which comprises a main loop, a PLC loop and a control loop, wherein the main loop comprises a frequency converter, n fans (n is more than or equal to 2) and n contactor groups, each contactor group comprises two contactors of a frequency conversion contactor and a power frequency contactor, the input end of the frequency converter and the input end of the normally open main contact of the power frequency contactor are respectively externally connected with a three-phase alternating current power supply, the output end of the frequency converter is connected with the input end of the normally open main contact of the frequency conversion contactor, the output end of the normally open contact of the frequency conversion contactor and the output end of the normally open contact of the power frequency contactor are respectively connected with the input end of the fans, the PLC loop comprises a PLC and n relay groups, the PLC is connected with the frequency converter, each relay group comprises two relays of a frequency conversion relay and a power frequency relay, PLC's input is connected respectively to power frequency contactor's normally open auxiliary contact, control circuit includes many frequency conversion start branch roads and the power frequency start branch road that are connected to outside alternating current power supply, the frequency conversion start branch road is including the normally open contact of the frequency conversion relay who establishes ties in proper order, frequency conversion contactor's coil, power frequency contactor's normally closed auxiliary contact, the power frequency starts the branch road and is including the normally open contact of the power frequency relay who establishes ties in proper order, power frequency contactor's coil, frequency conversion contactor's normally closed auxiliary contact.
The control mode of the electric control system for the fan frequency conversion in the breeding industry is as follows: after the PLC controls the frequency converter to start, the PLC controls the work of a first group of relay groups (the suction of the frequency conversion relay/the suction of the power frequency relay/the frequency conversion relay and the power frequency relay are not sucked) and then triggers the work of corresponding contact groups (the suction of the frequency conversion contactor/the suction of the power frequency contactor/the suction of the frequency conversion contactor/the power frequency contactor and the power frequency contactor are not sucked) through a control loop, so that the first group of fans work at the frequency conversion output by the frequency converter or work at the power frequency of 50Hz or stop working; after the fans of the first group are electrified to work, the PLC controls the work of other relay groups in the same control mode, so that the working frequency of each fan is controlled or the fans stop working. The utility model adopts the PLC and the frequency converter to control the working frequency of the fans one by one, so that the whole electrical control system only needs one frequency converter to control the frequency conversion work of a plurality of fans, the whole electrical system runs stably and reliably, the cost and the electric appliance quantity of the control system are greatly reduced, and a control loop is simplified; and control circuit adopts the mode of contactor normally closed auxiliary contact electric interlocking to guarantee the normal use of fan, and power frequency contactor's normally open contact is connected PLC's input respectively simultaneously and is used for feeding back whether every fan is in the power frequency running state to PLC.
This practicality further sets up to the PLC return circuit still includes switching power supply, external AC power supply is connected respectively to switching power supply's input and PLC's input, and PLC's output is connected to switching power supply's output.
This practicality further sets up to the PLC return circuit still includes the touch-sensitive screen, the touch-sensitive screen is connected with switching power supply and PLC respectively.
The switching power supply provides working voltage for the PLC and the touch screen, and the touch screen is convenient for a user to operate and control.
The utility model discloses further set up to the major loop still including a n motor protector, motor protector connects between fan and power frequency contactor, motor protector's normally closed contact is established ties on the power frequency starts the branch road.
The motor protector is used for protecting each fan and prolonging the service life of the fan.
This practicality is further set up to the PLC return circuit still includes converter start relay and warning relay, PLC's output is connected respectively to converter start relay's coil and warning relay's coil, and converter start relay's normally open contact connects the start input of converter.
The utility model discloses further set up to control circuit and still include many power frequency operation pilot lamp branch roads and the alarm indicator branch road that are connected to outside alternating current power supply, power frequency operation pilot lamp branch road is including the power frequency relay's that establishes ties in proper order normally open contact and power frequency operation pilot lamp, the alarm indicator branch road is including the alarm relay's that establishes ties in proper order normally open contact and alarm.
The power frequency operation indicating lamp and the alarm indicating lamp can reflect whether each fan is in the power frequency operation state or not and can give a fault alarm to the whole electric control system, and a user can visually know the operation state of the whole electric control system.
This practicality further sets up to the PLC return circuit still includes temperature detection module, PLC's input is connected to temperature detection module's output.
The temperature detection module is used for detecting the temperature of the environment of the farm, and the temperature transmitter inputs analog quantity signals to the PLC when the temperature is too high, so that the PLC controls the fan to work, and a constant temperature effect is achieved.
This practicality further sets up to the major loop still includes circuit breaker and phase sequence protector, the circuit breaker sets up the inlet wire side at outside three-phase alternating current power supply, outside three-phase alternating current power supply is connected respectively to the input of phase sequence protector, and PLC's input is connected to the output of phase sequence protector.
This practicality further sets up to be provided with the fuse on control circuit's the main road.
The circuit breaker and the phase sequence protector are used for protecting electric appliances on a main circuit, and the fuse is used for protecting the electric appliances on each branch on a control circuit, so that the fault protection capability of the electric control system is improved.
Drawings
Fig. 1 is an electrical schematic diagram of a main circuit according to an embodiment of the present invention.
Fig. 2 is the electrical schematic diagram of the PLC circuit according to the embodiment of the present invention.
Fig. 3 is an electrical schematic diagram of a control loop according to an embodiment of the present invention.
Detailed Description
As shown in figures 1-3, the utility model relates to an electric control system for the frequency conversion of a fan in the breeding industry, which comprises a main loop, a PLC loop and a control loop,
the main loop comprises a frequency converter BP (model is XLP520), 6 fans (M1, M2, M3, M4, M5, M6), 6 contact groups, 6 motor protectors (F1, F2, F3, F4, F5, F6), a breaker QF1 and a phase sequence protector HHD, each contact group comprises two contactors of a frequency converter (KM1, KM3, KM5, KM7, KM9, KM11) and a power frequency contactor (KM2, KM4, KM6, KM8, KM AC 10, KM12), the input end of the frequency converter and the input end of the main contact of the power frequency contactor are respectively connected with an external 380V three-phase power supply, the output end of the frequency converter is connected with the input end of the main contact of the frequency converter, the output end of the main normally open contact of the frequency converter and the output end of the main normally open contact of the main contact of the power frequency contactor are respectively connected with the input end of the fan, the motor protector is connected with the power frequency breaker of the power frequency side of, the input ends of the phase sequence protectors are respectively connected with an external three-phase alternating current power supply, the output ends of the phase sequence protectors are connected with the input end of the PLC,
the PLC loop comprises a PLC, 6 relay groups, a switching power supply, a touch screen, a frequency converter starting relay KA14, an alarm relay KA13 and a temperature detection module, wherein the PLC is connected with a frequency converter, the input end of the switching power supply and the input end of the PLC are respectively connected with an external 220V alternating current power supply, the output end of the switching power supply is connected with the output end of the PLC, the touch screen is respectively connected with the switching power supply and the PLC, each relay group comprises two relays of a frequency conversion relay (KA1, KA2, KA3, KA4, KA5, KA6) and a power frequency relay (KA7, KA8, KA9, KA10, KA11 and KA12), a coil of the frequency conversion relay and a coil of the power frequency relay are respectively connected with the output end of the PLC, auxiliary contacts of the power frequency contactor are respectively connected with the input end of the PLC, a coil of the frequency converter starting relay and a coil of the alarm relay are respectively connected with the output end of the PLC, and a normally open contact of the, the output end of the temperature detection module is connected with the input end of the PLC,
the control loop comprises 6 variable frequency starting branches connected with an external 220V alternating current power supply, a power frequency starting branch, a power frequency operation indicator light branch and 1 alarm indicator light branch, a fuse FU is arranged on a main circuit of the control circuit, the variable frequency starting branch circuit comprises a normally open contact of a variable frequency relay, a coil of a variable frequency contactor and a normally closed auxiliary contact of a power frequency contactor which are connected in series in sequence, the power frequency starting branch circuit comprises a normally open contact of a power frequency relay, a normally closed contact of a motor protector, a coil of a power frequency contactor and a normally closed auxiliary contact of a variable frequency contactor which are sequentially connected in series, the power frequency operation indicator lamp branch comprises a normally open contact of a power frequency relay and a power frequency operation indicator lamp (HL1, HL2, HL3, HL4, HL5 and HL6) which are sequentially connected in series, the alarm indicator light branch comprises a normally open contact of an alarm relay and an alarm HY1 which are sequentially connected in series.
According to the embodiment, the utility model discloses an electrical control system for breeding trade fan frequency conversion is 1 PLC and 1 electrical control system of 6 fans of converter control, and its control mode is as follows: the first fan is controlled by a variable frequency contactor KM1 and a power frequency contactor KM2, the attraction of the variable frequency contactor KM1 is controlled by a relay KA1, and the attraction of the power frequency contactor KM2 is controlled by a relay KA 7; the second fan is controlled by a variable frequency contactor KM3 and a power frequency contactor KM4, the attraction of the variable frequency contactor KM3 is controlled by a relay KA2, and the attraction of the power frequency contactor KM4 is controlled by a relay KA 8; the third fan is controlled by a variable frequency contactor KM5 and a power frequency contactor KM6, the suction of the variable frequency contactor KM5 is controlled by a relay KA3, and the suction of the power frequency contactor KM6 is controlled by a relay KA 9; the fourth fan is controlled by a variable frequency contactor KM7 and a power frequency contactor KM8, the attraction of the variable frequency contactor KM7 is controlled by a relay KA4, and the attraction of the power frequency contactor KM8 is controlled by a relay KA 10; the fifth fan is controlled by a variable frequency contactor KM9 and a power frequency contactor KM10, the suction of the variable frequency contactor KM9 is controlled by a relay KA5, and the suction of the power frequency contactor KM10 is controlled by a relay KA 11; the sixth fan is controlled by a variable frequency contactor KM11 and a power frequency contactor KM12, the suction of the variable frequency contactor KM11 is controlled by a relay KA6, and the suction of the power frequency contactor KM12 is controlled by a relay KA 12; the coil of the relay KA1-KA12 is electrified and controlled by the PLC, and the PLC controls the plurality of fans one by controlling the relay groups one by one.
Taking the first fan control as an example, the PLC controls the coil of the variable frequency relay KA1 to be energized, the normally open contact of the relay KA1 is closed, the coil of the contactor KM1 is energized to work, the normally open main contact of the contactor KM1 is closed, and the first fan works under the variable frequency voltage output by the frequency converter; when the frequency reaches 50Hz from 0Hz, the frequency conversion mode is switched off, the power frequency mode is switched, the PLC controls the coil of the power frequency relay KA7 to be electrified, the normally open contact of the relay KA7 is closed, the coil of the contactor KM2 is electrified to work, the normally open main contact of the contactor KM2 is closed, and the first fan works and operates under the power frequency voltage of external three-phase alternating current.
Claims (9)
1. The utility model provides an electrical control system for breed trade fan frequency conversion which characterized in that: comprises a main loop, a PLC loop and a control loop,
the main loop comprises a frequency converter, n fans (n is more than or equal to 2) and n contactor groups, each contactor group comprises two contactors of a frequency conversion contactor and a power frequency contactor, the input end of the frequency converter and the input end of a normally open main contact of the power frequency contactor are respectively provided with an external three-phase alternating current power supply, the output end of the frequency converter is connected with the input end of the normally open main contact of the frequency conversion contactor, the output ends of the normally open contacts of the frequency conversion contactor and the output end of the normally open contact of the power frequency contactor are respectively connected with the input end of,
the PLC loop comprises a PLC and n relay groups, the PLC is connected with a frequency converter, each relay group comprises a frequency conversion relay and a power frequency relay, a coil of the frequency conversion relay and a coil of the power frequency relay are respectively connected with the output end of the PLC, a normally open auxiliary contact of the power frequency contactor is respectively connected with the input end of the PLC,
control circuit includes many frequency conversion start branch circuits and the power frequency start branch circuit that are connected to outside alternating current power supply, the frequency conversion start branch circuit is including the normally open contact of the frequency conversion relay who establishes ties in proper order, frequency conversion contactor's coil, the normally closed auxiliary contact of power frequency contactor, the power frequency start branch circuit is including the normally open contact of the power frequency relay who establishes ties in proper order, the coil of power frequency contactor, the normally closed auxiliary contact of frequency conversion contactor.
2. The electrical control system for aquaculture industry fan frequency conversion of claim 1, wherein: the PLC loop further comprises a switch power supply, the input end of the switch power supply and the input end of the PLC are respectively connected with an external alternating current power supply, and the output end of the switch power supply is connected with the output end of the PLC.
3. The electrical control system for aquaculture industry fan frequency conversion of claim 2, wherein: the PLC loop further comprises a touch screen, and the touch screen is connected with the switching power supply and the PLC respectively.
4. The electrical control system for aquaculture industry fan frequency conversion of claim 1 or 2 or 3, wherein: the main loop further comprises n motor protectors, the motor protectors are connected between the fan and the power frequency contactor, and the normally closed contacts of the motor protectors are connected in series on the power frequency starting branch circuit.
5. The electrical control system for aquaculture industry fan frequency conversion of claim 1 or 2 or 3, wherein: the PLC loop further comprises a frequency converter starting relay and an alarm relay, a coil of the frequency converter starting relay and a coil of the alarm relay are respectively connected with the output end of the PLC, and a normally open contact of the frequency converter starting relay is connected with the starting input end of the frequency converter.
6. The electrical control system for aquaculture industry fan frequency conversion of claim 1 or 2 or 3, wherein: the PLC loop further comprises a temperature detection module, and the output end of the temperature detection module is connected with the input end of the PLC.
7. The electrical control system for aquaculture industry fan frequency conversion of claim 5, wherein: the control circuit further comprises a plurality of power frequency operation indicator lamp branches and alarm indicator lamp branches, wherein the power frequency operation indicator lamp branches are connected to an external alternating current power supply, the power frequency operation indicator lamp branches comprise normally-open contacts of power frequency relays connected in series in sequence and power frequency operation indicator lamps, and the alarm indicator lamp branches comprise normally-open contacts of alarm relays connected in series in sequence and an alarm.
8. The electrical control system for aquaculture industry fan frequency conversion of claim 1 or 2 or 3 or 7, wherein: the main loop further comprises a circuit breaker and a phase sequence protector, the circuit breaker is arranged on the incoming line side of an external three-phase alternating-current power supply, the input end of the phase sequence protector is connected with the external three-phase alternating-current power supply respectively, and the normally open contact of the phase sequence protector is connected with the input end of the PLC.
9. The electrical control system for aquaculture industry fan frequency conversion of claim 1 or 2 or 3 or 7, wherein: and a fuse is arranged on the main path of the control loop.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020898039.0U CN211791350U (en) | 2020-05-25 | 2020-05-25 | A electrical control system for breeding trade fan frequency conversion |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020898039.0U CN211791350U (en) | 2020-05-25 | 2020-05-25 | A electrical control system for breeding trade fan frequency conversion |
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| CN211791350U true CN211791350U (en) | 2020-10-27 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112876295A (en) * | 2021-01-22 | 2021-06-01 | 广州舒睿餐厨降解设备有限公司 | Kitchen garbage fermentation equipment control system |
| CN113075903A (en) * | 2021-02-25 | 2021-07-06 | 山东畜牧兽医职业学院 | Intelligent electric control system for free-range ducks |
| CN113133428A (en) * | 2021-04-29 | 2021-07-20 | 珠海智旋科技有限公司 | Fan system for aquaculture oxygenation and control method |
| CN114115094A (en) * | 2021-10-20 | 2022-03-01 | 北京国科诚泰农牧设备有限公司 | Control system of cow bed padding device |
| CN114289168A (en) * | 2021-12-29 | 2022-04-08 | 内蒙古超牌新材料股份有限公司 | Depolymerizing machine system and starting method thereof |
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2020
- 2020-05-25 CN CN202020898039.0U patent/CN211791350U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112876295A (en) * | 2021-01-22 | 2021-06-01 | 广州舒睿餐厨降解设备有限公司 | Kitchen garbage fermentation equipment control system |
| CN113075903A (en) * | 2021-02-25 | 2021-07-06 | 山东畜牧兽医职业学院 | Intelligent electric control system for free-range ducks |
| CN113133428A (en) * | 2021-04-29 | 2021-07-20 | 珠海智旋科技有限公司 | Fan system for aquaculture oxygenation and control method |
| CN114115094A (en) * | 2021-10-20 | 2022-03-01 | 北京国科诚泰农牧设备有限公司 | Control system of cow bed padding device |
| CN114115094B (en) * | 2021-10-20 | 2023-11-07 | 北京国科诚泰农牧设备有限公司 | Control system of cattle bed padding device |
| CN114289168A (en) * | 2021-12-29 | 2022-04-08 | 内蒙古超牌新材料股份有限公司 | Depolymerizing machine system and starting method thereof |
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