CN2854667Y - Control device for cooling fan of transformer - Google Patents
Control device for cooling fan of transformer Download PDFInfo
- Publication number
- CN2854667Y CN2854667Y CN 200520022126 CN200520022126U CN2854667Y CN 2854667 Y CN2854667 Y CN 2854667Y CN 200520022126 CN200520022126 CN 200520022126 CN 200520022126 U CN200520022126 U CN 200520022126U CN 2854667 Y CN2854667 Y CN 2854667Y
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- Prior art keywords
- cooling
- switch
- control
- relay
- transformer
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Abstract
A transformer cooling fan control apparatus comprises an inter-engaged stand-by power supply means consisting of two voltage relays, two contactors, two signal indicator lights, a transfer switch, and two low-pressure air switch; a cooling control means consisting of a low-pressure air switch, a contactor, a thermal relay, an intermediate relay, a time relay, a selector switch, and a signal indicator light; a cooling means consisting of operating, assistant and stand-by cooling fans; Each set of cooling fans is connected to the connection terminal array of the control cabinet. Auxiliary contacts of the current relay and of the temperature controller are directed into the control cabinet from the master control room so as to combine with the selector switch of the cooling control means and a control circuit module to form a switching cooling control circuit. The utility model allows the transformer to run steadily in a safe temperature range by grouping control of the cooling fan, thereby increasing service life of electric elements in the cooling fan, reducing power consumption and improving the reliability of power supply.
Description
Technical field:
The utility model relates to a kind of fan controller of controlling the cooling blower running status, belongs to transformer accessory.
Background technology:
In present control system; the control mode that adopts a cooling air group of planes all to drop into or withdraw from; can make the temperature of transformer frequent lifting occur; control device for cooling blower; frequent start and stop meeting reduces the serviceable life of electrical equipment; drop into or withdraw from the time of simultaneously owing to a cooling air group of planes, the power consumption of power transformation device and running noises are increased.In addition, owing to adopt single power supply, the reliability of power supply is relatively low.
Summary of the invention:
The purpose of this utility model provides a kind of transformer cooling blower control device, aspect the control of refrigeratory, by grouping control to the transformer cooling blower, and make each group blower fan that multiple alternative control model be arranged, make the user can according to the difference of load and season temperature variation select to drop into accordingly the quantity of blower fan, make transformer steadily remain on the interior operation of temperature range of a safety, increase the serviceable life of electrical equipment in the cooling blower, reduce power consumption, simultaneously, the reliability height of power supply.
The utility model is to be achieved by following technical proposals: this transformer cooling blower control device comprises by two voltage relay, two contactors, two signal lamps, switch, two standby supply units of mutual interlock that low-voltage air switch is formed; The cooling controller of forming by low-voltage air switch, contactor, electrothermal relay, auxiliary reclay, the time relay, selector switch, signal lamp; By the cooling device of working cooling blower, assisting cooling blower, standby cooling blower to form; Standby supply unit and the cooling controller of interlock is installed in the switch board mutually, wherein, to each group cooling blower, be connected with the switch board connecting terminal block by umbilical cable, introduce current relay auxiliary contact and temperature controller auxiliary contact to switch board from master-control room, form the conversion cooling control circuit with selector switch, control circuit module in the cooling controller that is installed in the switch board.When selecting switch to be in the working position, cooling control circuit can form a work control loop, and working fan is devoted oneself to work; When selecting switch to be in aided location, the cooling control loop forms a subsidiary control loop, the control accessory fan drops into automatically when temperature surpasses setting value or load current and surpasses setting value, the auxiliary cooling blower of excision automatically when temperature is lower than setting value or load current and is lower than setting value; When selecting switch to be in the spare space, control loop can form a standby control loop, drops into automatically with blower fan in the time control preparation of breaking down of other blower fans.
The good effect that the utlity model has:
1, aspect the control of refrigeratory, by grouping control to the transformer cooling blower, and make each group blower fan that multiple alternative control model be arranged, make the user can according to the difference of load and season temperature variation select to drop into accordingly the quantity of blower fan, make transformer steadily remain on the interior operation of temperature range of a safety, increase the serviceable life of electrical equipment in the cooling blower, reduce power consumption.
2, adopting two mutual standby AC power is the refrigeratory power supply, and the reliability of power supply is higher relatively.
Description of drawings:
Fig. 1: cooling blower control device connection diagram;
Fig. 2: cooling blower control device circuit theory diagrams.
Among the figure: 1 cooling device, 2 work cooling blowers, 3 auxiliary cooling blower 4 standby cooling blower 5 switch board U1, V1, W1 three-phase alternating-current supply inlet wire; U2, V2, W2 three-phase alternating-current supply inlet wire; The N zero-power line; KT1, the KT2 time relay; KA current relay auxiliary contact; K1 temperature controller auxiliary contact; QA1, QA2, QA3, QA4, QA5 low-voltage circuit breaker; KM1, KM2, KM3, KM4, KM5 A.C. contactor; FRI1, FR2, FR3 thermal overload relay; 1KK, 2KK, KK1, KK2, KK3 selector switch; 3ZJ, 4ZJ, JJ auxiliary reclay; KV1, KV2 voltage relay; 1D, 2D, 3D, 4D, 5D pilot lamp; M1, M2, M3 cooling fan motor.
Embodiment: the utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, this transformer cooling blower control device comprises the cooling device of being made up of the cooling blower 2 of working, auxiliary cooling blower 3, standby cooling air 4 machines 1, and is installed in standby supply unit and the cooling controllers composition that links mutually in the switch board 5.
As shown in Figure 2, cooling blower is provided by the mutual standby interchange 38OV power supply of two-way, and the inlet wire side installs low-voltage air switch QA1, QA2 additional, and overload and short-circuit protection can be provided.If the #1 power supply is in the working position, the #2 power supply is in the spare space, and at this moment, QA1, QA2 all are in closing position, voltage relay KV1, KV2 excitation, and its normal opened contact closure, power light 1D, 2D all light, and indicate two power supplys normal.Selector switch 1KK is in closing position, and 8. 6. its node connected, and contactor KM2 normally closed contact is connected, contactor KM1 coil magnetization, and its normal opened contact KM1 connects, and is the cooling device power supply by the #1 power supply.Selector switch 2KK is in the separating brake position, 7. 5. its node connected, interlocking switch LK is in the position of " 12 ", at this moment, if #1 power contactor KM1 tripping operation, its normally closed contact KM1 closure, contactor KM2 coil by selector switch 2KK node 5. 7., the normally closed KM1 of contactor KM1, interlocking switch LK node 1. 2. electric excitation, the normal opened contact KM2 closure of contactor KM2 continues as the refrigeratory power supply by the #2 power supply in standby, has guaranteed running without interruption of refrigeratory.The following describes the control principle of refrigeratory.When selecting K switch K1 contact 6. 5. to connect (being in the working position), by major loop low-voltage circuit breaker QA1 (or QA2), branch road low-voltage circuit breaker QA3, A.C. contactor KM3, thermal overload relay FR1, electric elements such as selector switch KK1 have constituted the working control circuit of cooling fan motor.Miniature circuit breaker QA3, thermal overload relay FRI can provide overload, short circuit, open-phase protection to cooling blower.Selector switch KK1 is 2. contact connection 1., makes A.C. contactor KM3 coil charged, and cooling blower M1 is put into operation.When selecting K switch K2 contact 2. 1. to connect (being in aided location), major loop low-voltage circuit breaker QA1 (or QA2), branch road low-voltage circuit breaker QA4, A.C. contactor KM4, thermal overload relay FR2, the auxiliary contact K1 that the pasta thermometer is introduced, the auxiliary contact KA that current relay is introduced, time relay KT1, electric elements such as auxiliary reclay 3ZJ have constituted the auxiliary control circuit of cooling fan motor.At this moment, as the transformer load electric current reach ratings 2/3, it causes the current relay auxiliary contact KA closure of this device, makes time relay KT1 coil charged, the action by time-delay contact KT1 makes auxiliary reclay 3ZJ coil charged; When perhaps the pasta temperature reaches 65 ℃, temperature controller is introduced the normal opened contact K1 closure of this device, also can make auxiliary reclay 3ZJ coil charged, more than two kinds of situations finally make the normally open contact 3ZJ closure of auxiliary reclay, make the 2. 1. subsidiary control loop at place connection of selector switch, auxiliary cooling blower M2 is put into operation.When 1/2 or the pasta temperature that is lower than ratings as the transformer load electric current is lower than 50 ℃, its normal opened contact KA or K1 that causes this device all can disconnect, make the coil losing electricity of auxiliary reclay 3ZJ, its normal opened contact 3ZJ is disconnected, " assisting " loop is disconnected and the auxiliary cooling blower of excision.When 8. 7. connecting (being in the spare space) as selector switch KK3 contact, then cooling blower is in " standby " duty, at this moment, major loop low-voltage circuit breaker QA1 (or QA2), this branch road low-voltage circuit breaker QA5, A.C. contactor KM5, thermal overload relay FR3, auxiliary reclay 4ZJ, time relay KT2 have constituted the standby control loop of cooling fan motor.As the cooling blower of working breaks down, the auxiliary normally closed contact KM3 closure of its control loop KM3, selector switch KK1 node closure, like this, time relay KT3 coil magnetization, its normal opened contact KT3 time closing, auxiliary reclay 4ZJ coil magnetization, its normal opened contact 4ZJ closure, 8. 7. make A.C. contactor KM5 coil charged by selector switch KK3 contact, its normally opened contact KM5 closure is connected " standby " loop, and standby cooling blower puts into operation.Simultaneously, when any one group of cooling blower moved, KM1 or KM2 or KM3 normally opened contact closure were lighted pilot lamp 3D or 4D or 5D, indicate the fan operation state on the spot.In the utility model, every group of blower fan is set at four kinds of optional duties, be respectively " work, auxiliary, standby, stop ".Like this, can selectively adjust the quantity of cooling blower according to the concrete load condition of transformer, but accomplish both efficiently radiates heats, blower fan is fully utilized, fully take into account the balanced operation of every typhoon machine simultaneously again.Compare with traditional control device, can avoid the rapid variation of transformer running temperature, avoided the frequent start-stop of electrical equipment and blower fan, reduced transformer operation noise the serviceable life of having improved electrical equipment and blower fan, saved the energy.
Claims (1)
1, a kind of transformer cooling blower control device is characterized in that: this transformer cooling blower control device comprises by two voltage relay, two contactors, two signal lamps, switch, two standby supply units of mutual interlock that low-voltage air switch is formed; The cooling controller of forming by low-voltage air switch, contactor, electrothermal relay, auxiliary reclay, the time relay, selector switch, signal lamp; By the cooling device of working cooling blower, assisting cooling blower, standby cooling blower to form; Standby supply unit and the cooling controller of interlock is installed in the switch board mutually, wherein, to each group cooling blower, be connected with the switch board connecting terminal block by umbilical cable, introduce current relay auxiliary contact and temperature controller auxiliary contact to switch board from master-control room, form the conversion cooling control circuit with selector switch, control circuit module in the cooling controller that is installed in the switch board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520022126 CN2854667Y (en) | 2005-12-11 | 2005-12-11 | Control device for cooling fan of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520022126 CN2854667Y (en) | 2005-12-11 | 2005-12-11 | Control device for cooling fan of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2854667Y true CN2854667Y (en) | 2007-01-03 |
Family
ID=37581304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520022126 Expired - Fee Related CN2854667Y (en) | 2005-12-11 | 2005-12-11 | Control device for cooling fan of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2854667Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094842A (en) * | 2009-12-15 | 2011-06-15 | 上海市电力公司 | Automatic energy-saving control device and method for axial flow fan of main transformer station |
| CN102842404A (en) * | 2012-09-28 | 2012-12-26 | 丹东欣泰电气股份有限公司 | Dry type transformer device for offshore wind power generation |
| CN103199769A (en) * | 2013-04-10 | 2013-07-10 | 南京双京电器集团有限公司 | Three-power vacuum electromagnetic starter used for coal mine fan |
| CN103246303A (en) * | 2013-04-11 | 2013-08-14 | 江苏省电力公司张家港市供电公司 | Control circuit of main transformer air-cooling system |
| CN104122790A (en) * | 2013-04-27 | 2014-10-29 | 杭州市电力局 | Cooling system |
| CN104777745A (en) * | 2014-01-14 | 2015-07-15 | 北大方正集团有限公司 | Redundancy control circuit and redundancy control system |
| CN105134607A (en) * | 2015-09-08 | 2015-12-09 | 无锡压缩机股份有限公司 | Cooling control system of air-cooled screw compressor |
| CN107437454A (en) * | 2016-09-30 | 2017-12-05 | 熊仲金 | Main transformer new extension enters the device and method of air cooling system |
| CN109765951A (en) * | 2018-12-21 | 2019-05-17 | 湖北中巽泰科技有限公司 | Electrical cabinet humiture control method, system and medium based on heterogeneous data analysis |
| CN112147025A (en) * | 2020-09-28 | 2020-12-29 | 东风汽车集团有限公司 | Automatic control system for engine exhaust cold and hot impact fan |
| CN114089794A (en) * | 2021-11-05 | 2022-02-25 | 国网天津市电力公司电力科学研究院 | Control method for cooling system of oil-immersed air-cooled transformer |
-
2005
- 2005-12-11 CN CN 200520022126 patent/CN2854667Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094842A (en) * | 2009-12-15 | 2011-06-15 | 上海市电力公司 | Automatic energy-saving control device and method for axial flow fan of main transformer station |
| CN102842404A (en) * | 2012-09-28 | 2012-12-26 | 丹东欣泰电气股份有限公司 | Dry type transformer device for offshore wind power generation |
| CN102842404B (en) * | 2012-09-28 | 2015-06-17 | 丹东欣泰电气股份有限公司 | Dry type transformer device for offshore wind power generation |
| CN103199769A (en) * | 2013-04-10 | 2013-07-10 | 南京双京电器集团有限公司 | Three-power vacuum electromagnetic starter used for coal mine fan |
| CN103246303A (en) * | 2013-04-11 | 2013-08-14 | 江苏省电力公司张家港市供电公司 | Control circuit of main transformer air-cooling system |
| CN104122790B (en) * | 2013-04-27 | 2016-08-17 | 杭州市电力局 | Cooling system |
| CN104122790A (en) * | 2013-04-27 | 2014-10-29 | 杭州市电力局 | Cooling system |
| CN104777745A (en) * | 2014-01-14 | 2015-07-15 | 北大方正集团有限公司 | Redundancy control circuit and redundancy control system |
| CN105134607A (en) * | 2015-09-08 | 2015-12-09 | 无锡压缩机股份有限公司 | Cooling control system of air-cooled screw compressor |
| CN107437454A (en) * | 2016-09-30 | 2017-12-05 | 熊仲金 | Main transformer new extension enters the device and method of air cooling system |
| CN109765951A (en) * | 2018-12-21 | 2019-05-17 | 湖北中巽泰科技有限公司 | Electrical cabinet humiture control method, system and medium based on heterogeneous data analysis |
| CN112147025A (en) * | 2020-09-28 | 2020-12-29 | 东风汽车集团有限公司 | Automatic control system for engine exhaust cold and hot impact fan |
| CN114089794A (en) * | 2021-11-05 | 2022-02-25 | 国网天津市电力公司电力科学研究院 | Control method for cooling system of oil-immersed air-cooled transformer |
| CN114089794B (en) * | 2021-11-05 | 2022-07-29 | 国网天津市电力公司电力科学研究院 | Control method for cooling system of oil-immersed air-cooled transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |