CN206313698U - A kind of frequency conversion and power frequency switching circuit air-cooler - Google Patents
A kind of frequency conversion and power frequency switching circuit air-cooler Download PDFInfo
- Publication number
- CN206313698U CN206313698U CN201621036894.0U CN201621036894U CN206313698U CN 206313698 U CN206313698 U CN 206313698U CN 201621036894 U CN201621036894 U CN 201621036894U CN 206313698 U CN206313698 U CN 206313698U
- Authority
- CN
- China
- Prior art keywords
- frequency
- power
- switch
- frequency conversion
- cabinet
- 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.)
- Expired - Fee Related
Links
Landscapes
- Control Of Ac Motors In General (AREA)
- Inverter Devices (AREA)
Abstract
The utility model is related to a kind of frequency conversion and power frequency switching circuit air-cooler, including：Cabinet, circuit breaker Q F is provided with cabinet, Current Transmit, frequency converter UF, motor M, on-load switch and change-over switch KK, bus power source is accessed in whole circuit by circuit breaker Q F summation current transformers CT, the input of frequency converter is connected by air switch QF2 with power network, the output end of frequency converter is connected to motor by air switch QF4, frequency converter input/output terminal is respectively equipped with A.C. contactor KM1 and KM2, input end of motor passes sequentially through air switch QF3, A.C. contactor KM3 and on-load switch are connected with power network, power frequency loop X A2 and frequency conversion loop X A1 are connected in parallel by change-over switch KK, it is connected with power network by the first Inductive Load Resistance X RL after the input parallel connection in power frequency loop and frequency conversion loop.The automatic switchover of the utility model power frequency and frequency conversion in the case where not stopping production using can carry out.
Description
Technical field
The utility model is related to fan-type load electrical transmission control technology field, more particularly to a kind of frequency conversion to be cut with power frequency
Change circuit air-cooler.
Background technology
Frequency converter has extensive use in highly energy-consuming trades such as electric power, metallurgy, mine, oil, chemical industry, especially at some
Under special occasions, such as the soft start of motor, continuous startup occasion higher to grid requirements and motor are, it is necessary to frequency converter pair
Motor carries out unperturbed control, reach to motor, power network impact it is small in addition without impact etc. demand.Due to frequency converter use each
Being supported in whole production process in industry is all a very crucial link, is not allow to occur shutting down, frequency converter
Power frequency just has great importance with frequency conversion no-harass switch for user equipment and the continuity and security of production.
At present, in constant pressure water supply system, to save frequency converter cost of investment, when frequency converter drive motor runs to 50Hz
Afterwards, if pressure of supply water does not reach setting value still, variable-frequency power sources is disconnected, power frequency is accessed after time delay, this water pump is by converting operation
Switch to power frequency operation.The power supply of pump motor is switched between variable-frequency power sources and power frequency supply, and this is effectively equivalent to two
Individual different power supply carries out synchronous operation, and this kind of switching mode can cause very big dash current to produce, to frequency converter and motor,
Water pump assembly, even pipeline can all cause very big harm, but also very big negative effect can be caused to supply network.
Work frequency conversion switching of the prior art, switching electric current is very big, can produce great impact to motor and frequency converter, not only
The operating efficiency of frequency converter is influenceed, and the easy generation overcurrent trip protection in handoff procedure causes transducer power device
Damage so that handoff failure.Additionally, in actual production, due to voltage sample and filtering link etc., when work frequency conversion switches
Between it is oversize, it is impossible to ensure the continuity of production, directly affect normal operation, it is impossible to which meeting must be continuous to blower fan in special occasions
The requirement of uninterrupted operation, causes the larger wasting of resources and stopping accident.
Utility model content
For the shortcoming of above-mentioned prior art, it is low, reliable and stable that the purpose of this utility model is to provide a kind of energy consumption, can be with
The air-cooler that motor is taken over seamlessly between frequency conversion and power frequency is realized, frequency converter in work frequency conversion handoff procedure is effectively prevented from
Stopping accident occurs, it is ensured that the continuity of production, and the existing motor of solution carries out frequency conversion and power frequency switches the dash current for causing greatly,
Need to shut down the problem for being operated and being influenceed production.
To achieve these goals, the technical solution of the utility model is as follows：
A kind of frequency conversion and power frequency switching circuit air-cooler, including：Cabinet, is provided with circuit breaker Q F, electric current mutual in the cabinet
Sensor CT, frequency converter UF, motor M, on-load switch and change-over switch KK, bus power source pass through circuit breaker Q F summation current transformers CT
Access in whole circuit, the input of the frequency converter is connected by air switch QF2 with power network, and the output end of frequency converter passes through
Air switch QF4 is connected to motor, and frequency converter input/output terminal is respectively equipped with A.C. contactor KM1 and KM2, input end of motor according to
Secondary to be connected with power network by air switch QF3, A.C. contactor KM3 and on-load switch, the power frequency loop X-A2 and frequency conversion are returned
Road X-A1 is connected in parallel by change-over switch KK, and the first inductive load is passed through after the input parallel connection in power frequency loop and frequency conversion loop
Resistance X-RL is connected with power network.
The cabinet top is provided with fan, and the fan is accessed in power network after being connected with the second Inductive Load Resistance X-RL.
Transmitter BSQ is additionally provided with the cabinet, the transmitter BSQ connects by with the 3rd Inductive Load Resistance RL2
In access power network.
Lamp in rear door limit switch MJ and back door cabinet, the rear door limit switch MJ and back door cabinet are additionally provided with the cabinet
Interior lamp is by access power network of connecting with the 4th Inductive Load Resistance RL1.
The circuit breaker Q F is NS250H breakers.
The on-load switch is QFINS100 on-load switches.
Compared with prior art, the utility model sets frequency conversion loop and power frequency loop double back by installing change-over switch additional
Road, with frequency conversion power frequency handoff functionality, it can be ensured that in the case of frequency converter failure, automatic switching undisturbed to power frequency loop is transported
OK.The automatic switchover of the utility model power frequency and frequency conversion is in the case where stopping production using can carry out, it is to avoid associated production sets
The accident for causing influence to produce for shutting down occurs, and realizes fan safe, reliably operation.The utility model is realized in motor
The purpose of variable-frequency power sources is switched in the case of non-stop-machine by power frequency supply, the electric current in power supply handoff procedure can be well controlled
Impact, realizes steady switching so as to ensure that the continuity of production process.
The technique effect of design of the present utility model, concrete structure and generation is made furtherly below with reference to accompanying drawing
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Brief description of the drawings
Fig. 1：The frequency conversion of the utility model air-cooler and power frequency switching circuit figure.
Specific embodiment
In order that technical problem, technical scheme and beneficial effect that the utility model is solved become more apparent, below
With reference to drawings and Examples, the utility model is further elaborated.It should be appreciated that specific implementation described herein
Example is only used to explain the utility model, is not used to limit the utility model.
A kind of frequency conversion for providing for the utility model as shown in Figure 1 and power frequency switching circuit air-cooler, including：Cabinet, institute
State and be provided with cabinet circuit breaker Q F, Current Transmit, frequency converter UF, motor M, on-load switch and change-over switch KK, bus electricity
Source is accessed in whole circuit by circuit breaker Q F summation current transformers CT, and the input of the frequency converter passes through air switch QF2
It is connected with power network, the output end of frequency converter is connected to motor by air switch QF4, and frequency converter input/output terminal is respectively equipped with friendship
Stream contactor KM1 and KM2, input end of motor pass sequentially through air switch QF3, A.C. contactor KM3 and on-load switch and power network
Connection, the power frequency loop X-A2 and frequency conversion loop X-A1 be connected in parallel by change-over switch KK, power frequency loop and frequency conversion loop
Input parallel connection after be connected with power network by the first Inductive Load Resistance X-RL.
In the utility model specific implementation, when frequency conversion normally runs, frequency conversion is connected automatically to by by change-over switch KK
In loop, A.C. contactor KM1 and KM2 is closed, and frequency converter UF is in running order, blower motor frequency control operation.Work as change
During the faulty signal of frequency device, continued to run with by the way that change-over switch KK is rapidly switched into power frequency loop, A.C. contactor KM3 is closed
Close, frequency converter is isolated with motor, blower motor power frequency operation.The utility model fan frequency conversion loop can quickly switching undisturbed be extremely
Power frequency loop continues to run with.
To avoid dash current from causing, frequency converter is damaged the utility model or motor is hit, and is installed additional between power frequency and frequency conversion
There are suitable reactor, i.e. the first Inductive Load Resistance X-RL, the electric current that limitation grid voltage mutation and switching overvoltage cause
Impact, effectively protects frequency converter and improves power factor.
The utility model measures current signal by installing Current Transmit, and electric current during collection power frequency operation is simultaneously controlled
Power current is zero during system switching.
The utility model cabinet top is provided with fan, and the fan accesses electricity after being connected with the second Inductive Load Resistance X-RL
In net.The radiating of the utility model cabinet uses fan, fan to be arranged on cabinet top.
Transmitter BSQ is additionally provided with the utility model cabinet, non electrical quantity is converted into electric signal amplifies so as to for remote simultaneously
Side's measurement and control, the transmitter BSQ is accessed in power network by connect with the 3rd Inductive Load Resistance RL2.
Be additionally provided with lamp in rear door limit switch MJ and back door cabinet in the utility model cabinet, the rear door limit switch MJ and
Lamp is by access power network of connecting with the 4th Inductive Load Resistance RL1 in the cabinet of back door.
The utility model circuit breaker Q F is NS250H breakers.
The utility model on-load switch is QFINS100 on-load switches.
The utility model can realize the speed of service continuously adjustabe of blower fan, and the energy-saving effect of energy Saving system is general
Up to 20~40% or so.The utility model can be applied to blower fan water pump, staircase control occasion, and motor power frequency is mutually tangent with frequency conversion
Motor load undisturbed when changing, with the purpose realized energy-conservation, improve load capacity, energy consumption is low, applied widely.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all at this
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (6)
1. a kind of frequency conversion and power frequency switching circuit air-cooler, it is characterised in that including：Cabinet, breaker is provided with the cabinet
QF, Current Transmit, frequency converter UF, motor M, on-load switch and change-over switch KK, bus power source pass through circuit breaker Q F and electricity
Current transformer CT is accessed in whole circuit, and the input of the frequency converter is connected by air switch QF2 with power network, frequency converter
Output end is connected to motor by air switch QF4, and frequency converter input/output terminal is respectively equipped with A.C. contactor KM1 and KM2, electricity
Machine input passes sequentially through air switch QF3, A.C. contactor KM3 and on-load switch and is connected with power network, the power frequency loop X-
A2 and frequency conversion loop X-A1 are connected in parallel by change-over switch KK, by the after the parallel connection of the input in power frequency loop and frequency conversion loop
One Inductive Load Resistance X-RL is connected with power network.
2. frequency conversion according to claim 1 and power frequency switching circuit air-cooler, it is characterised in that the cabinet top is provided with
Fan, the fan is accessed in power network after being connected with the second Inductive Load Resistance X-RL.
3. frequency conversion according to claim 2 and power frequency switching circuit air-cooler, it is characterised in that be additionally provided with the cabinet
Transmitter BSQ, the transmitter BSQ are by access power network of connecting with the 3rd Inductive Load Resistance RL2.
4. frequency conversion according to claim 3 and power frequency switching circuit air-cooler, it is characterised in that be additionally provided with the cabinet
Lamp in door limit switch MJ and back door cabinet afterwards, in the rear door limit switch MJ and back door cabinet lamp by with the 4th inductive load electricity
Resistance RL1 series connection is accessed in power network.
5. frequency conversion according to claim 1 and power frequency switching circuit air-cooler, it is characterised in that the circuit breaker Q F is
NS250H breakers.
6. frequency conversion according to claim 1 and power frequency switching circuit air-cooler, it is characterised in that the on-load switch is
QFINS100 on-load switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621036894.0U CN206313698U (en) | 2016-09-05 | 2016-09-05 | A kind of frequency conversion and power frequency switching circuit air-cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621036894.0U CN206313698U (en) | 2016-09-05 | 2016-09-05 | A kind of frequency conversion and power frequency switching circuit air-cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206313698U true CN206313698U (en) | 2017-07-07 |
Family
ID=59243064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621036894.0U Expired - Fee Related CN206313698U (en) | 2016-09-05 | 2016-09-05 | A kind of frequency conversion and power frequency switching circuit air-cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206313698U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959441A (en) * | 2017-12-31 | 2018-04-24 | 广州市大弘自动化科技有限公司 | A kind of multi-mode motor switching on/off circuit |
| 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 |
| CN117060684A (en) * | 2023-10-11 | 2023-11-14 | 山西美锦氢能开发有限公司 | Automatic fault power frequency cutting device for high-voltage frequency converter and working method thereof |
-
2016
- 2016-09-05 CN CN201621036894.0U patent/CN206313698U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959441A (en) * | 2017-12-31 | 2018-04-24 | 广州市大弘自动化科技有限公司 | A kind of multi-mode motor switching on/off circuit |
| CN107959441B (en) * | 2017-12-31 | 2024-05-31 | 永光鑫润(北京)电子有限责任公司 | Multi-mode motor power-on/off circuit |
| 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 |
| CN117060684A (en) * | 2023-10-11 | 2023-11-14 | 山西美锦氢能开发有限公司 | Automatic fault power frequency cutting device for high-voltage frequency converter and working method thereof |
| CN117060684B (en) * | 2023-10-11 | 2024-01-05 | 山西美锦氢能开发有限公司 | Automatic fault power frequency cutting device for high-voltage frequency converter and working method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102946136B (en) | Circuit and method for switching from power frequency of high-voltage inverter to variable frequency without disturbance | |
| CN201146397Y (en) | Intelligent rapid emergency power supply system | |
| CN206313698U (en) | A kind of frequency conversion and power frequency switching circuit air-cooler | |
| CN103427729A (en) | Rod pumped well group control system based on direct current bus | |
| CN202260606U (en) | Uninterrupted power supply | |
| CN102946108A (en) | Voltage automatic compensation device | |
| CN100468909C (en) | External multi-energy distribution energy-saving system for oil field pumping unit | |
| CN102412577B (en) | Non-breakpoint operation type power-saving device | |
| CN204515046U (en) | A kind of mining electromagnetic starter Integrated Protection System test unit | |
| CN202737474U (en) | Three-phase intelligent reactive compensation detection device | |
| CN204967633U (en) | Oil field beam -pumping unit is with energy -conserving direct current contravariant terminal cabinet | |
| CN205545052U (en) | Frequency converter system | |
| CN204668986U (en) | A kind of battery charging and discharging device | |
| CN201928233U (en) | AC (alternating current) double-control high-voltage matrix frequency conversion electric control system for elevator | |
| CN110768290B (en) | Alternating current-direct current series-parallel connection distribution network for energy internet | |
| CN102085986B (en) | Alternating current dual-control and high-voltage matrix frequency-conversion electronic control system of hoisting machine | |
| CN204661206U (en) | A kind of colliery low pressure winch Multifunctional combination switching pull up circuit | |
| CN200990575Y (en) | Elevator frequency changer external hanging energy feedback device | |
| CN106849102A (en) | A kind of mesohigh series compensation and depth current limiting system | |
| CN203722328U (en) | Apparatus capable of automatically switch power frequency electric supply in case of UPS own faults | |
| CN107732929B (en) | Intelligent integrated power supply system with energy-saving integration of city piping lane | |
| CN202474934U (en) | Medium voltage emergency power supply taking boosting rectification as charging security | |
| CN202276189U (en) | Control power supply dual-channel power supplying device for high voltage inverter | |
| CN206077239U (en) | Elevator exchanges compound high-pressure frequency-conversion control panel | |
| CN201830134U (en) | Frequency converter with bypass |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170707 Termination date: 20190905 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |