CN207761999U - Square cabin station axial flow blower control circuit - Google Patents
Square cabin station axial flow blower control circuit Download PDFInfo
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- CN207761999U CN207761999U CN201721886288.2U CN201721886288U CN207761999U CN 207761999 U CN207761999 U CN 207761999U CN 201721886288 U CN201721886288 U CN 201721886288U CN 207761999 U CN207761999 U CN 207761999U
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Abstract
The utility model is related to a kind of square cabin station axial flow blower control circuits comprising electric power loop, air-blower control circuit and system control loop；Electric power loop includes generator, wind turbine, motor protecter；Air-blower control circuit includes controlling brancher corresponding with wind turbine; A.C. contactor is connected on controlling brancher; normally-closed contact and A.C. contactor built in motor protecter are connected on controlling brancher, and the front-end branches of controlling brancher are at manually controlling branch and automatically control branch and two controlling branchers select a gating by manual/automatic selector switch；It manually controls branch road and is connected with start button；The relay branch that system control loop includes unit allocation display module, is connected on unit allocation display module control output end mouthful, relay branch road connection relay, the normally opened contact of relay, which is connected to, automatically controls branch road.The utility model has the advantages that circuit structure is stable, defencive function is complete, control is safe and reliable.
Description
Technical field
The utility model is related to square cabin station field, specifically a kind of square cabin station axial flow blower control circuit.
Background technology
Square cabin station is also referred to as container power station, generally as large-scale remote construction site field power supply, operating condition
Badly, big using load change.Unit is in semi-closed state, and shelter radiating condition is poor, and unit cooling uses axial flow blower.And
Using electrothermal relay as protection device axial flow blower itself but frequent occurrence the failures such as overload, phase shortage and burn-down of electrical machinery occurs
Phenomenon, and then influence unit normal operation or affect the generation of duration phenomenon adversely, core reasons are electrothermal relay.
Electrothermal relay is worked using the fuel factor characteristic of electric current, therefore, heat after device installation direction, use ring
Border and connecting line used can all influence its performance, exist simultaneously the defects of operating current setting is inconvenient accurate.Specifically：
1）Electrothermal relay is that electric current passes through heating element generating heat, promotion bimetal leaf action；The transmission of heat has convection current, spoke
Three kinds of modes are penetrated and conduct, wherein convection current has directionality, the bottom-up transmission of heat, when placing, if heater element exists
The lower section of bimetal leaf, for bimetal leaf with regard to immersion heater, actuation time is short；If heater element is in the side of bimetal leaf, double gold
It is hot slowlyer to belong to piece, the actuation time of electrothermal relay is long；When being worked due to unit, operating temperature is very high, and local device temperature is more
Height, heat propagation will produce adverse effect to hot relay protector action message in shelter；
2）The speed that environment temperature acts electrothermal relay is affected；The temperature of electrothermal relay surrounding medium, should and electricity
The temperature of motivation surrounding medium is identical, otherwise can destroy the mated condition adjusted；For example, when motor is mounted on high temperature
Place and electrothermal relay be mounted on temperature lower when, the action of electrothermal relay will lag（Or action current is big）；Conversely, its
Action will shift to an earlier date（Or action current is small）；
3）The connecting line of electrothermal relay also plays conductive force in addition to conduction；If connecting line is too thin, what connecting line generated
Heat can pass to bimetal leaf, in addition heater element is radiated outward along conducting wire less, so as to shorten the trip action of electrothermal relay
Time；, whereas if the connecting line used is excessively thick, then it can extend the trip action time of electrothermal relay.
Utility model content
That the technical problem to be solved by the present invention is to provide a kind of circuit structures is stable, defencive function is complete, control peace
Complete reliable square cabin station axial flow blower control circuit.
In order to solve the above technical problems, the square cabin station axial flow blower control circuit of the utility model is structurally characterized in that packet
Include electric power loop, air-blower control circuit and system control loop；Wherein：Electric power loop includes generator, is connected to power generation electromechanics
The wind turbine of power output end, the motor protecter being connected on fan power circuit；Air-blower control circuit includes corresponding with wind turbine
Controlling brancher is connected with A.C. contactor on controlling brancher, the normally-closed contact built in motor protecter and A.C. contactor series connection
On controlling brancher, the front-end branches of controlling brancher are at manually controlling branch and automatically control branch and two controlling branchers pass through
Manual/automatic selector switch selects a gating；It manually controls branch road and is connected with start button；System control loop includes unit control
Display module processed, the relay branch being connected on unit allocation display module control output end mouthful, relay branch road connect
Relay, the normally opened contact of relay, which is connected to, automatically controls branch road.It is in series with breaker on the electric power loop of wind turbine.
Preferably, branch road is manually controlled to be connected with and the concatenated normally closed type stop button of start button.
Preferably, air-blower control circuit further includes the first indicator light branch, first indicator light branch the first instruction of road connection
Lamp, the normally opened contact built in motor protecter are connected to the first indicator light branch road.
Preferably, the normally opened contact built in motor protecter is connected to the signal input port of unit allocation display module.
Preferably, indicating fault branch is connected on unit allocation display module control output end mouthful, indicating fault is used
Branch road is connected with indicating fault relay, and air-blower control circuit further includes the second indicator light branch, the second indicator light branch
The normally opened contact of the second indicator light of upper connection, indicating fault relay is connected to the first indicator light branch road.
The utility model has the beneficial effects that：
This case uses digital intelligent motor protecter, when break phase, overload, three-phase imbalance, stall occurs in axial flow blower
Etc. abnormal conditions when, can cut off in time A.C. contactor control voltage, disconnect fan power, fast and reliable protection axis stream wind
Machine；Digital intelligent motor protecter uses current transformer for measuring unit, using microcontroller as micro-chip processor, adopts
With intelligent, digitizing technique, by high accuracy number dial-up setting mode, the specified electricity directly demarcated according to the name plate of motor
Flow valuve sets the setting current of protector, and to have the characteristics that accurate, intuitive, convenient；Due to using micro-chip processor, digitize
Current control so that control accuracy is improved；Meanwhile control function also arrives larger extension：It can carry out short circuit, overload flow, three-phase
Current unbalance factor detects detection process；It can also determine whether stall, phase shortage；It, can be with additionally, due to using micro-chip processor
It realizes and starts evacuation technology, the startup evacuation time separates with overload time, while overload action being made to have the good inverse time lag special
Property；
Automatic control loop controls wind turbine start and stop by detecting unit voltage, and under-voltage protection is carried out to fan electromotor；Simultaneously
According to unit temperature height, cooling blower start and stop are carried out, unit oil consumption can be preferably reduced, improve unit operation benefit；
Axial flow blower of the axial flow blower control loop of this case with generally use electrothermal relay as protection device controls back
Road is compared, and protection control function is more perfect, more acurrate；Due to using internal or external current transformer as measuring unit, and
The control loop of generally use electrothermal relay protection, it is different using bimetal leaf thermal characteristics, protection act is carried out, by ambient enviroment
Condition is affected, can not accurate quantification, poor reliability.
In conclusion the utility model has the advantages that circuit structure is stable, defencive function is complete, control is safe and reliable.
Description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description：
Fig. 1 is the electrical block diagram of the electric power loop of the utility model；
Fig. 2 is the one of which electrical block diagram in the air-blower control circuit of the utility model；
Fig. 3 is the one of which electrical block diagram of system control loop corresponding with Fig. 2；
Fig. 4 is another electrical block diagram in the air-blower control circuit of the utility model；
Fig. 5 is another electrical block diagram of system control loop corresponding with Fig. 4.
Specific implementation mode
With reference to attached drawing, the square cabin station axial flow blower control circuit of the utility model includes electric power loop, air-blower control time
Road and system control loop.As shown, this case, by taking three wind turbines as an example, wherein M1, M2 are as shelter interior compartment ventilation wind
Machine, M3 is as main cooling blower.Correspondingly, electric power loop corresponding with each wind turbine and controlling brancher are corresponding to be arranged three
Item.Specifically, electric power loop includes generator GF, is connected to wind turbine M1, M2, M3 of Generator electrical output end and is connected to
Motor protecter FM1, FM2, FM3 on fan power circuit；Air-blower control circuit includes corresponding with wind turbine M1, M2, M3 respectively
Controlling brancher L1, L2, L3, be connected separately with A.C. contactor KM1, KM2, KM3, electric motor protecting on controlling brancher L1, L2, L3
Normally-closed contact and A.C. contactor KM1, KM2, KM3 built in device FM1, FM2, FM3 are connected on controlling brancher L1, L2, L3 respectively
On, the front-end branches of controlling brancher L1, L2, L3 at manually control branch L11, L21, L31 and automatically control branch L12, L22,
L32 and two controlling brancher selects a gating by manual/automatic selector switch A-M；It manually controls and connects on branch L11, L21, L31
It is connected to start button SB2, SB3, SB4；System control loop, which includes unit allocation display module 1, is connected to unit allocation shows
Relay branch on 1 control output end of module mouthful, relay branch road connection relay KA5, KA6, KA7, relay KA5,
The normally opened contact of KA6, KA7, which are connected to, to be automatically controlled on branch L12, L22, L32.Wherein, it is in series on the electric power loop of wind turbine
Circuit breaker Q F2, QF3, QF4.
With reference to attached drawing, air-blower control circuit further includes that the is connected on the first indicator light branch L4, the first indicator light branch L4
One indicator light LED1, the normally opened contact built in motor protecter FM1, FM2, FM3 are connected on the first indicator light branch L4.
With reference to attached drawing, manually control be connected on branch L11, L21, L31 it is concatenated often with start button SB2, SB3, SB4
Enclosed stop button SB6, SB7, SB8.Normally opened contact built in motor protecter FM1, FM2, FM3 is connected to unit allocation and shows
The signal input port of module.It is connected with indicating fault branch on 1 control output end of unit allocation display module mouthful, failure refers to
Show and be connected with indicating fault relay KA8 with branch road, air-blower control circuit further includes the second indicator light branch L6, and second refers to
Show and be connected with the second indicator light LED2 on lamp branch L5, indicating fault is connected to the second instruction with the normally opened contact of relay KA8
On lamp branch L5.
It describes in detail to the operation principle of this case with reference to each embodiment.
In electric power loop, circuit breaker Q F2, QF3, QF4 are respectively used to the short-circuit protection of wind turbine M1, M2, M3, work as wind turbine
M1, M2, M3 occur abnormal, and when short trouble occurs, circuit is cut off in respective circuit breakers QF2, QF3, QF4 tripping, prevent failure into
One step expands.Motor protects the overload and open-phase protection that protector FM1, FM2, FM3 are respectively used to wind turbine M1, M2, M3；For work(
The little axial flow blower of rate, a cable is directly through motor protecter, respectively as its built-in current mutual inductor primary line
Circle, provides measurement for protector and compares operating current；For the axial flow blower that power of motor is larger, motor protecter current sampling
Using axial flow blower primary circuit current transformer, mutual inductor is passed through by primary circuit current motor protector to operating current
Detection is handled, and timely processing is abnormal.
In air-blower control circuit, A.C. contactor KM1, KM2, KM3 are used for the manual and automatic fortune of wind turbine M1, M2, M3
Row start and stop with automatically control.
Axial flow blower has automatically with manual work state, operates manual/automatic selector switch A-M and changes automatic or manual control
State processed.When manual mode：Start button SB2, SB3, SB4, controlling brancher L1, L2, L3 conducting, A.C. contactor are pressed respectively
KM1, KM2, KM3 are acted respectively, and are latched by corresponding A.C. contactor auxiliary contact, and wind turbine M1, M2, M3 are respectively driven
Work；Stop button SB6, SB7, SB8, controlling brancher L1, L2, L3 cut-out are pressed respectively, and the self-locking for cutting off A.C. contactor is returned
Road, wind turbine M1, M2, M3 are stopped.
Under auto state, blower fan work can be made in automatic control state, the A.C. contactor of wind turbine is controlled back by system
Road controls.In system control loop, by taking Fig. 3 as an example, unit allocation display module 1 is received by signal input/output module 2 and is examined
Signal is surveyed, after unit normally starts, when unit allocation display module 1 detects that unit output voltage is normal, unit allocation is aobvious
Show that module 1 exports wind turbine M1, M2 enabling signal respectively, meanwhile, work as unit（It is cooling）When temperature reaches specified value, main cooling is exported
Wind turbine M3 enabling signals, cool down, and corresponding relay KA5, KA6, KA7 coil obtains electric, and the normally opened contact of relay closes
Close, corresponding controlling brancher L1, L2, L3 conducting, the coil of corresponding A.C. contactor KM1, KM2, KM3 obtain it is electric, contactor it is normal
Open contact closure, corresponding wind turbine M1, M2, M3 work once electrified.It is shut down in idling mode or operation when unit is in enter
When detecting unit output voltage exception, unit output voltage less than certain setting value and when unit temperature is less than setting value, machine
Group control display module 1 control output stop signal, corresponding relay KA5, KA6, KA7 coil losing electricity, relay it is normally opened
Contact return, corresponding controlling brancher L1, L2, L3 power-off, the coil losing electricity of corresponding A.C. contactor KM1, KM2, KM3, contact
The normally opened contact return of device, corresponding wind turbine M1, M2, M3 power-off are shut down.
Automatic control loop controls wind turbine start and stop by detecting unit voltage, and under-voltage protection is carried out to fan electromotor；Simultaneously
According to unit temperature height, cooling blower start and stop are carried out, unit oil consumption can be preferably reduced, improve unit operation benefit.
Normally-closed contact and A.C. contactor KM1, KM2, KM3 built in motor protecter FM1, FM2, FM3 are connected on respectively
On controlling brancher L1, L2, L3.When motor protecter detect fan power loop works current anomaly, break equal phenomenon of the failure,
Normally-closed contact built in protector disconnects immediately, and corresponding controlling brancher disconnects, the coil blackout of A.C. contactor, ac contactor
The normally opened contact return of device cuts off fan power, it is therefore prevented that failure generates and expands.
With reference to Fig. 2, air-blower control circuit further includes connecting first on the first indicator light branch L4, the first indicator light branch L4
Indicator light LED1, the normally opened contact built in motor protecter FM1, FM2, FM3 are connected on the first indicator light branch L4.Such as Fig. 2
It is shown, it is connected on the road L4 of the first indicator light after three normally opened contact parallel connections of three motor protecters FM1, FM2, FM3,
That is, when one of motor protecter action, the electric power loop conducting of the first indicator light LED1, the first indicator light LED1 points
It is bright, carry out fault alarm.
As an improvement type, as shown in figure 5, three normally opened contacts built in three motor protecters FM1, FM2, FM3
Alarm actuating contact access system control loop is can be used as, as the input signal of system, system carries out alert process or teletransmission, together
When, as shown in figure 4, indicating fault is lighted with the second malfunction indicator lamp LED2 of relay KA8 controls and carries out fault alarm.
This case uses digital intelligent motor protecter, when break phase, overload, three-phase imbalance, stall occurs in axial flow blower
Etc. abnormal conditions when, can cut off in time A.C. contactor control voltage, disconnect fan power, fast and reliable protection axis stream wind
Machine；Digital intelligent motor protecter uses current transformer for measuring unit, using microcontroller as micro-chip processor, adopts
With intelligent, digitizing technique, by high accuracy number dial-up setting mode, the specified electricity directly demarcated according to the name plate of motor
Flow valuve sets the setting current of protector, and to have the characteristics that accurate, intuitive, convenient；Due to using micro-chip processor, digitize
Current control so that control accuracy is improved；Meanwhile control function also arrives larger extension：It can carry out short circuit, overload flow, three-phase
Current unbalance factor detects detection process；It can also determine whether stall, phase shortage；It, can be with additionally, due to using micro-chip processor
It realizes and starts evacuation technology, the startup evacuation time separates with overload time, while overload action being made to have the good inverse time lag special
Property.
Axial flow blower of the axial flow blower control loop of this case with generally use electrothermal relay as protection device controls back
Road is compared, and protection control function is more perfect, more acurrate；Due to using internal or external current transformer as measuring unit, and
The control loop of generally use electrothermal relay protection, it is different using bimetal leaf thermal characteristics, protection act is carried out, by ambient enviroment
Condition is affected, can not accurate quantification, poor reliability.
In conclusion the utility model is not limited to above-mentioned specific implementation mode.Those skilled in the art are not departing from this reality
Under the premise of with novel spirit and scope, several change or modification can be done.Above-mentioned change or modification each fall within book practicality
Novel protection domain.
Claims (6)
1. a kind of square cabin station axial flow blower control circuit, it is characterized in that including electric power loop, air-blower control circuit and system control
Circuit processed；Wherein：
Electric power loop includes generator（GF）, be connected to the wind turbine of Generator electrical output end（M1、M2、M3）, be connected to wind turbine
Motor protecter on electric power loop（FM1、FM2、FM3）；
Air-blower control circuit includes and wind turbine（M1、M2、M3）Corresponding controlling brancher（L1、L2、L3）, controlling brancher（L1、L2、
L3）On be connected with A.C. contactor（KM1、KM2、KM3）, motor protecter（FM1、FM2、FM3）Built-in normally-closed contact and friendship
Flow contactor（KM1、KM2、KM3）It is connected on controlling brancher（L1、L2、L3）On, controlling brancher（L1、L2、L3）Front-end branches
At manually controlling branch（L11、L21、L31）With automatically control branch（L12、L22、L32）And two controlling branchers by manually/
Automatic transfer switch（A-M）Select a gating；Manually control branch（L11、L21、L31）On be connected with start button（SB2、SB3、
SB4）；
System control loop includes unit allocation display module（1）, be connected to unit allocation display module（1）Control output end mouthful
On relay branch, relay branch road connection relay（KA5、KA6、KA7）, relay（KA5、KA6、KA7）It is normally opened
Contact portion is automatically controlling branch（L12、L22、L32）On.
2. square cabin station axial flow blower control circuit as described in claim 1, it is characterized in that connecting on the electric power loop of wind turbine
There is breaker（QF2、QF3、QF4）.
3. square cabin station axial flow blower control circuit as described in claim 1, it is characterized in that described manually control branch（L11、
L21、L31）On be connected with and start button（SB2、SB3、SB4）Concatenated normally closed type stop button（SB6、SB7、SB8）.
4. square cabin station axial flow blower control circuit as described in claim 1, it is characterized in that air-blower control circuit further includes
One indicator light branch（L4）, the first indicator light branch（L4）The first indicator light of upper connection（LED1）, motor protecter（FM1、FM2、
FM3）Built-in normally opened contact is connected to the first indicator light branch（L4）On.
5. square cabin station axial flow blower control circuit as described in claim 1, it is characterized in that motor protecter（FM1、FM2、
FM3）Built-in normally opened contact is connected to the signal input port of unit allocation display module.
6. square cabin station axial flow blower control circuit as claimed in claim 5, it is characterized in that unit allocation display module（1）Control
Indicating fault branch is connected on output port processed, indicating fault branch road is connected with indicating fault relay（KA8）,
Air-blower control circuit further includes the second indicator light branch（L6）, the second indicator light branch（L5）On be connected with the second indicator light
（LED2）, indicating fault relay（KA8）Normally opened contact be connected to the second indicator light branch（L5）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721886288.2U CN207761999U (en) | 2017-12-29 | 2017-12-29 | Square cabin station axial flow blower control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721886288.2U CN207761999U (en) | 2017-12-29 | 2017-12-29 | Square cabin station axial flow blower control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207761999U true CN207761999U (en) | 2018-08-24 |
Family
ID=63185538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721886288.2U Active CN207761999U (en) | 2017-12-29 | 2017-12-29 | Square cabin station axial flow blower control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207761999U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867820A (en) * | 2019-11-15 | 2020-03-06 | 陕西航空电气有限责任公司 | Alternating current intelligent contactor system adaptive to multi-specification load current |
-
2017
- 2017-12-29 CN CN201721886288.2U patent/CN207761999U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867820A (en) * | 2019-11-15 | 2020-03-06 | 陕西航空电气有限责任公司 | Alternating current intelligent contactor system adaptive to multi-specification load current |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190403 Address after: 261061 No. 197 Fushou East Street, Weifang High-tech Zone, Shandong Province Patentee after: Weichai Electric Equipment Co., Ltd. Address before: 261108 Fuhai Street, Binhai Economic and Technological Development Zone, Weifang City, Shandong Province Patentee before: Weichai Heavy Machinery Co., Ltd. |
|
| TR01 | Transfer of patent right |