CN201974710U - Automatic air cooling control device for main transformer - Google Patents
Automatic air cooling control device for main transformer Download PDFInfo
- Publication number
- CN201974710U CN201974710U CN2010206423401U CN201020642340U CN201974710U CN 201974710 U CN201974710 U CN 201974710U CN 2010206423401 U CN2010206423401 U CN 2010206423401U CN 201020642340 U CN201020642340 U CN 201020642340U CN 201974710 U CN201974710 U CN 201974710U
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- Prior art keywords
- transformer
- phase supply
- automatic control
- control loop
- automatic
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- Protection Of Transformers (AREA)
Abstract
The utility model belongs to the technical field of electric equipment, and discloses an automatic air cooling control device for a main transformer, which comprises a cooling fan, a fan motor, and three-phase supply circuits; an automatic control loop used for controlling the fan motor to start and stop is connected with the three-phase supply circuits in parallel, wherein the three-phase supply circuits are all provided with a contactor; the automatic control loop consists of a low temperature controller ,a high temperature controller and a contactor coil, which are mutually connected in series. The automatic air cooling control device for the main transformer can realize the automatic monitoring of the working temperature of the transformer and the automatic control of a cooling system, can freely set the start of the cooling fan, and can reliably guarantee the normal running of the transformer, and effectively improve the running quality of the transformer; moreover, the automatic air cooling control device for the main transformer can greatly reduce the workload of operators in charge, and has the advantage of simple structure, is convenient to use, and is safe and reliable, etc.
Description
Technical field
The utility model belongs to electrical equipment control technology field, the air-cooled automaton of particularly a kind of main-transformer.
Background technology
Transforming plant main transformer electrical equipment all disposes air cooling equipment in operational process, cause transformer to damage in order to prevent that temperature is too high, when main transformer electrical equipment temperature rises to permissible value when above, starting air cooling equipment cools off, when main transformer electrical equipment temperature is reduced to permissible value when following, then close air cooling equipment and stop cooling, so that energy savings consumption.In the prior art, generally the way of Cai Yonging is by manually the temperature rise and the cooling system of transformer operation being kept an eye on, and main-transformer will monitor that the temperature of transformer opens variation constantly in operational process, when temperature rises to 50 ℃, need manually boot blower fan, when dropping to 50 ℃ by the time, turn off blower fan again, the operator on duty is quite bothered, if in case carelessness will be quickened the Transformer Winding insulation ag(e)ing, reduce transformer serviceable life.Therefore this method one is to take manpower, take great energy time-consuming, the 2nd, its control operation is fully by manually finishing, poor reliability, equipment breaks down easily.
The utility model content
The utility model provides a kind of can realize the automatic monitoring of transformer running temperature and the automatic control of cooling blower, effectively improves the transformer running quality, and easy to use, the air-cooled automaton of safe and reliable main-transformer.
Realize that the technical scheme that the purpose of this utility model is taked is: this automaton comprises cooling blower, blower motor and three-phase supply circuit, on the described three-phase supply circuit and be connected to the automatic control loop that is used to control the blower motor start and stop, wherein be equipped with contactor at the three-phase supply circuit, automatic control loop is made up of cryostat, pyrostat and the contactor coil of mutual series connection.
Be parallel with contactor with pyrostat in the described automatic control loop.
Be provided with isolating switch in described three-phase supply circuit and the automatic control loop.
Be provided with electrothermal relay in described three-phase supply circuit and the automatic control loop.
The air-cooled automaton of making according to such scheme of main-transformer, can realize the automatic monitoring of transformer working temperature and the automatic control of cooling system, the startup of cooling blower can be adjusted arbitrarily, and guarantee the normal operation of transformer reliably, effectively improve the transformer running quality, and do not need the staff to the supervision of transformer working temperature with to the operation of cooling system, can greatly reduce operator on duty's workload.Advantages such as simultaneously, this device has simple in structure, and is easy to use, safe and reliable.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Referring to Fig. 1, the air-cooled automaton of main-transformer of the present utility model, this automaton comprises cooling blower (not shown), blower motor 10 and three-phase supply circuit 1, on the described three-phase supply circuit 1 by the two-phase circuit and be connected to the automatic control loop 2 that is used to control blower motor 10 start and stop.On 3 circuits of three-phase supply circuit 1, be equipped with contactor 14,15,16, be used under the control of automatic control loop 2, realizing the break-make of three-phase supply circuit 1.Automatic control loop 2 is installed in the easy heating position of transformer (not shown), the temperature of transformer is monitored, and control the start and stop of blower motor 10 according to monitor temperature.Automatic control loop 2 is made up of cryostat 5, pyrostat 6 and the contactor coil 9 of mutual series connection, is parallel with contactor 7 with pyrostat 6 in automatic control loop 2, under the condition of high temperature as the normal open circuit.In three-phase supply circuit 1 and automatic control loop 2, be equipped with electrothermal relay 11,12,13 and 8, it under the transformer condition of high temperature normally closed contact, guarantee the unimpeded of three-phase supply circuit 1 and automatic control loop 2, when transformer is lower than normal operating temperature, disconnect.Be equipped with isolating switch 17,18,19 and 3,4 in three-phase supply circuit 1 and the automatic control loop 2, control the break-make of three-phase supply circuit 1 and automatic control loop 2 by manual operation respectively.
Principle of work: this automaton earlier is set at 50 ℃ according to the transformer normal operating temperature upper limit with the control temperature of cryostat 5 in use, and the control temperature value of pyrostat 6 is set at 55 ℃.When transformer moves,, connect the power supply of blower motor 10 and automatic control loop 2 with isolating switch 17,18,19 and 3,4 closures.When the transformer temperature rise reached 50 ℃ of normal temperatures of operation, cryostat 5 was connected, because the contact of pyrostat 6 is in open position, so blower motor 10 can not start.Pyrostat 6 is connected when the transformer temperature continues to rise to 55 ℃, and electrothermal relay 11,12,13 and 8 is normally closed contacts, and this moment, contactor coil 9 obtained electricity, and contactor 14,15,16 and 7 action contact transfer connection to by disconnection, and cooling blower is started.The transformer temperature decreased after cooling blower started certain hour, pyrostat 6 disconnects when being lower than 55 ℃, but because electrothermal relay 11,12,13 and 8 is still in on-state, contactor 14,15,16 and 7 is in the self-sustaining state, when transformer is reduced to 50 ℃ by the time, cryostat 5 disconnects, contactor coil 9 outages, and blower fan quits work.When the transformer temperature raises once more, still repeat the above course of work, reach the purpose of automatic control transformer cooling system operation start and stop thus, but both saves energy, can guarantee the kilter of transformer operation again effectively, save manpower simultaneously, and strengthened the reliability of transformer cooling.
Claims (4)
1. air-cooled automaton of main-transformer, this automaton comprises cooling blower, blower motor and three-phase supply circuit, it is characterized in that: on the described three-phase supply circuit and be connected to the automatic control loop that is used to control the blower motor start and stop, wherein be equipped with contactor at the three-phase supply circuit, automatic control loop is made up of cryostat, pyrostat and the contactor coil of mutual series connection.
2. the air-cooled automaton of main-transformer as claimed in claim 1 is characterized in that: be parallel with contactor with pyrostat in the described automatic control loop.
3. the air-cooled automaton of main-transformer as claimed in claim 1 is characterized in that: be provided with isolating switch in described three-phase supply circuit and the automatic control loop.
4. the air-cooled automaton of main-transformer as claimed in claim 1 is characterized in that: be provided with electrothermal relay in described three-phase supply circuit and the automatic control loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206423401U CN201974710U (en) | 2010-12-01 | 2010-12-01 | Automatic air cooling control device for main transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206423401U CN201974710U (en) | 2010-12-01 | 2010-12-01 | Automatic air cooling control device for main transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201974710U true CN201974710U (en) | 2011-09-14 |
Family
ID=44579809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206423401U Expired - Fee Related CN201974710U (en) | 2010-12-01 | 2010-12-01 | Automatic air cooling control device for main transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201974710U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103389750A (en) * | 2013-08-08 | 2013-11-13 | 济钢集团有限公司 | Control device for cooling fans of transformer |
| CN103425150A (en) * | 2013-07-31 | 2013-12-04 | 成都电业局双流供电局 | Transformer fan controller |
| CN105575616A (en) * | 2016-01-27 | 2016-05-11 | 国网山西省电力公司运城供电公司 | Automatic cooling system for transformer |
-
2010
- 2010-12-01 CN CN2010206423401U patent/CN201974710U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103425150A (en) * | 2013-07-31 | 2013-12-04 | 成都电业局双流供电局 | Transformer fan controller |
| CN103389750A (en) * | 2013-08-08 | 2013-11-13 | 济钢集团有限公司 | Control device for cooling fans of transformer |
| CN103389750B (en) * | 2013-08-08 | 2015-10-28 | 济钢集团有限公司 | A kind of transformer cooling fan control device |
| CN105575616A (en) * | 2016-01-27 | 2016-05-11 | 国网山西省电力公司运城供电公司 | Automatic cooling system for transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20121201 |