CN204614592U - A kind of Large Oil immersion rectifier transformer air cooling equipment - Google Patents
A kind of Large Oil immersion rectifier transformer air cooling equipment Download PDFInfo
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- CN204614592U CN204614592U CN201520251623.6U CN201520251623U CN204614592U CN 204614592 U CN204614592 U CN 204614592U CN 201520251623 U CN201520251623 U CN 201520251623U CN 204614592 U CN204614592 U CN 204614592U
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- selector switch
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Abstract
The utility model is applicable to industry and large-sized civil oil immersed type rectifier transformer field, provides a kind of Large Oil immersion rectifier transformer air cooling equipment, comprising: the control circuit being installed on the motor of fan on transformer radiator and fan; Each fan is in parallel respectively to be accessed in three phase mains main road, and three phase mains main road is provided with contactor, in the coil access contactor control loop of contactor; Coil one end of contactor connects the phase in three phase mains, and the other end connects selector switch; The end points that manually boots of selector switch is directly connected with zero-power line; The signal thermometer of the transformer built-in of the automatic startup end points connection parallel connection of selector switch is connected with zero-power line with after current relay.By loading onto fan on the radiator of transformer, prevent and that cause be correlated with loop tripping operation too high due to transformer temperature rise, air cooling equipment can be selected automatically to start and manually boot, circuit structure is simple and convenient, it is low to invest, adjustment easily, be suitable for the advantages such as convenient.
Description
Technical field
The utility model belongs to industry and large-sized civil oil immersed type rectifier transformer field, particularly relates to a kind of Large Oil immersion rectifier transformer air cooling equipment.
Background technology
Large Oil immersion rectifier transformer institute on-load is Large Copacity frequency conversion rectifier plant+large scale motor.This load is generally periodic shock load.Because frequency conversion rectifier device is a non-sine power receiving equipment concerning electrical network, even if mains supply voltage is ideal sine wave, due to rectifying tube open, the effect of disconnected unilateal conduction, make rectifying device also be non-sinusoidal current waveform from the electric current that electrical network is drawn.This harmonic current flows through system and comprises motor, power transmission line and transformer at interior various impedance components, certainly leads to non-sinusoidal voltage and falls, all cause pollution to the current-voltage waveform in AC electric power systems.This pollution causes exciting curent increase to transformer, efficiency degenerates, and is degrading its power factor, causes the more general transformer of Large Oil immersion rectifier transformer temperature rise to want fast.Although general rectifier transformer considers above-mentioned factor when manufacturing and designing, the heat radiation of transformer and the ability such as overload and anti-harmonic pollution are strengthened, but in practical application, due to the uncertainty of actual load and transformer surrounding environment, often there is overload in Large Oil immersion rectifier transformer, temperature rise is too high, and cause the loop tripping operation of being correlated with, impact is produced.
Utility model content
The object of the utility model embodiment is to provide a kind of Large Oil immersion rectifier transformer air cooling equipment, often occurs overload and the too high problem of temperature rise to solve prior art Large Oil immersion rectifier transformer.
The utility model embodiment is achieved in that a kind of Large Oil immersion rectifier transformer air cooling equipment, and described device comprises: the control circuit being installed on the motor of fan on transformer radiator and described fan;
Fan described in each is in parallel respectively to be accessed in three phase mains main road, and described three phase mains main road is provided with contactor, in the coil access contactor control loop of described contactor;
Described contactor control loop comprises selector switch S1, signal thermometer BT1 and current relay FA;
Coil one end of described contactor connects the phase in described three phase mains, and the other end connects described selector switch S1;
Described selector switch S1 corresponds to selection and manually boots and automatically start two states, and the switch connection end point manually booted of described selector switch S1 is directly connected with described zero-power line;
The described signal thermometer BT1 of the transformer built-in of the automatically actuated switch connection end point connection parallel connection of described selector switch S1 is connected with zero-power line with after described current relay FA;
Described current relay FA is arranged in user's control cubicle.
In first preferred embodiment of a kind of Large Oil immersion rectifier transformer air cooling equipment that the utility model provides: described contactor control loop also comprises the first circuit breaker Q 1 be arranged on described three phase mains main road, be arranged on the second circuit breaker Q 2 on the connecting line of described contactor control loop and power supply, and be arranged on circuit breaker Q 11 ~ Q1N corresponding with the quantity of described fan MF1 ~ MFN on each fan branch road.
In second preferred embodiment of a kind of Large Oil immersion rectifier transformer air cooling equipment that the utility model provides: described contactor control loop also comprises the first auxiliary relay K1 connected with described signal thermometer BT1, the the second auxiliary relay K2 connected with the fan branch road of described parallel connection, the time relay KT1 connected with described current relay FA.
In 3rd preferred embodiment of a kind of Large Oil immersion rectifier transformer air cooling equipment that the utility model provides: described contactor control loop also comprises the first signal lamp H1 connected with the fan branch road of parallel connection, be connected on the secondary signal lamp H2 between described second circuit breaker Q 2 and zero-power line, and illuminating lamp H3.
The beneficial effect of a kind of Large Oil immersion rectifier transformer air cooling equipment that the utility model embodiment provides comprises:
A kind of Large Oil immersion rectifier transformer air cooling equipment that the utility model provides, fan loaded onto by the radiator of transformer, and prevent and that cause be correlated with loop tripping operation too high due to transformer temperature rise, impact is produced.Fan can be selected automatically to start and manually boot, and selects when manually booting, and air cooling equipment directly brings into operation work; When selecting automatically to run, when the temperature value that the signal thermometer meeting transformer built-in exceedes setting or the loading condition of current relay that is arranged in user's control cubicle exceed set point, automatically this air cooling equipment is started, forced ventilation cooling is carried out to transformer, treat that the temperature that signal thermometer detects is reduced to design temperature, and the load current of current loading device be reduced to setting electric current time, automatically this air cooling equipment is stopped, thus ensure to work in the load range of transformer when closing, guarantee the safe operation of transformer.
This air cooling equipment have circuit structure simple and convenient, invest low, adjustment easily, be suitable for the advantages such as convenient, for industry and the cooling of large-sized civil oil immersed type rectifier transformer provide useful result of use.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the vertical view being provided with the Large Oil immersion rectifier transformer of air cooling equipment that the utility model embodiment provides;
Fig. 2 is the front view being provided with the Large Oil immersion rectifier transformer of air cooling equipment that the utility model embodiment provides;
Fig. 3 is the left view being provided with the Large Oil immersion rectifier transformer of air cooling equipment that the utility model embodiment provides;
Fig. 4 is the principle schematic of the control circuit of the motor of the fan of the Large Oil immersion rectifier transformer air cooling equipment that the utility model embodiment provides;
Fig. 5 is the principle schematic of the contactor control loop of the Large Oil immersion rectifier transformer air cooling equipment that the utility model embodiment provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
In order to technical scheme described in the utility model is described, be described below by specific embodiment.
Be respectively the vertical view being provided with the Large Oil immersion rectifier transformer of air cooling equipment, front view and left view that the utility model provides as shown in Figure 1, Figure 2 and Figure 3, front view in Fig. 2 and Fig. 3 and left view be respectively A in the vertical view of Fig. 1 to B direction view, from Fig. 1, Fig. 2 and Fig. 3, a kind of air cooling equipment that the utility model provides comprises the control circuit of the motor being installed on fan on transformer radiator and fan.
The number of fan can according to the practical operation situation of Large Oil immersion rectifier transformer and setting parameter, each fan is in parallel respectively to be accessed in three phase mains main road, this three phase mains main road is provided with contactor KM, in the coil access contactor control loop of this contactor KM.
This contactor control loop comprises selector switch S1, signal thermometer BT1 and current relay FA.
Coil one end of contactor connects the phase in three phase mains, and other end connection selector switch S1, selector switch S1 corresponds to selection and manually boots and automatically start two states, and the switch connection end point manually booted of selector switch S1 is directly connected with zero-power line.The automatically actuated switch connection end point of selector switch S1 connects transformer built-in signal thermometer BT1 in parallel and is connected with zero-power line with after current relay FA, and current relay FA is arranged in user's control cubicle.
A kind of Large Oil immersion rectifier transformer air cooling equipment that the utility model embodiment provides, has and automatically starts and manually boot two kinds of functions.
When selector switch S1 selects to manually boot, the coil direct-electrifying of contactor KM, makes contactor close, and the motor energising of each fan is run.
When selector switch is selected automatically to start, two kinds of triggering modes are had to realize automatically starting: when 1, the signal thermometer of transformer built-in exceedes the temperature value of setting, contact circuit is connected, and contactor coil is energized, and automatically starts air cooling equipment; 2, when the loading condition being arranged at the current relay in user's control cubicle exceedes set point, relay contact closure, contactor coil power-on circuit is connected, and automatically starts this air cooling equipment.Air cooling equipment carries out forced ventilation cooling to transformer after starting, treat that the temperature that signal thermometer detects is reduced to design temperature, and the load current of current loading device be reduced to setting electric current time, automatically this air cooling equipment is stopped, thus ensure to work in the load range of transformer when closing, guarantee the safe operation of transformer.
Have circuit structure simple and convenient, invest low, adjustment easily, be suitable for the advantages such as convenient.For industry and the cooling of large-sized civil oil immersed type rectifier transformer provide useful result of use.
Further, the principle schematic of the embodiment of the control loop of a kind of Large Oil immersion rectifier transformer air cooling equipment that the utility model provides is illustrated in figure 4.
As shown in Figure 4, this contactor control loop also comprises the first circuit breaker Q 1 be arranged on three phase mains main road, be arranged on the second circuit breaker Q 2 in the wiring of contactor control loop and power supply, and be arranged on circuit breaker Q 11 ~ Q1N corresponding with the quantity of fan MF1 ~ MFN on each fan branch road.During normal startup, first make circuit breaker Q 1, Q2, Q11 ~ Q1N combined floodgate.
Further, contactor control loop also comprises the first auxiliary relay K1 connected with signal thermometer BT1, the second auxiliary relay K2 connected with the fan branch road of parallel connection, the time relay KT1 connected with current relay FA.
Contactor control loop also comprises the first signal lamp H1 connected with the fan branch road of parallel connection, is connected on the secondary signal lamp H2 between circuit breaker Q 2 and zero-power line, and illuminating lamp H3.Whether the first signal lamp H1 is used to refer to each fan branch road and is directly communicated with power supply, and whether secondary signal lamp H2 is used to refer to contactor control loop and switches on power.Illuminating lamp H3 is used to provide the illumination functions in control cabinet.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (4)
1. a Large Oil immersion rectifier transformer air cooling equipment, is characterized in that, described device comprises: the control circuit being installed on the motor of fan on transformer radiator and described fan;
Fan described in each is in parallel respectively to be accessed in three phase mains main road, and described three phase mains main road is provided with contactor, in the coil access contactor control loop of described contactor;
Described contactor control loop comprises selector switch (S1), signal thermometer (BT1) and current relay (FA);
Coil one end of described contactor connects the phase in described three phase mains, and the other end connects described selector switch (S1);
Described selector switch (S1) corresponds to selection and manually boots and automatically start two states, and the switch connection end point manually booted of described selector switch (S1) is directly connected with described zero-power line;
The described signal thermometer (BT1) of the transformer built-in of the automatically actuated switch connection end point connection parallel connection of described selector switch (S1) is connected with zero-power line with after described current relay (FA);
Described current relay (FA) is arranged in user's control cubicle.
2. device as claimed in claim 1, it is characterized in that, described contactor control loop also comprises the first circuit breaker (Q1) be arranged on described three phase mains main road, be arranged on the second circuit breaker (Q2) on the connecting line of described contactor control loop and power supply, and be arranged on circuit breaker (Q11 ~ Q1N) corresponding with the quantity of described fan (MF1 ~ MFN) on each fan branch road.
3. device as claimed in claim 1, it is characterized in that, described contactor control loop also comprises first auxiliary relay (K1) of connecting with described signal thermometer (BT1), second auxiliary relay (K2) of connecting with the fan branch road of described parallel connection, the time relay (KT1) of connecting with described current relay (FA).
4. device as claimed in claim 2, it is characterized in that, described contactor control loop also comprises first signal lamp (H1) of connecting with the fan branch road of parallel connection, be connected on the secondary signal lamp (H2) between described second circuit breaker (Q2) and zero-power line, and illuminating lamp (H3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520251623.6U CN204614592U (en) | 2015-04-23 | 2015-04-23 | A kind of Large Oil immersion rectifier transformer air cooling equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520251623.6U CN204614592U (en) | 2015-04-23 | 2015-04-23 | A kind of Large Oil immersion rectifier transformer air cooling equipment |
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| Publication Number | Publication Date |
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| CN204614592U true CN204614592U (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520251623.6U Active CN204614592U (en) | 2015-04-23 | 2015-04-23 | A kind of Large Oil immersion rectifier transformer air cooling equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655095A (en) * | 2016-03-22 | 2016-06-08 | 国网山西省电力公司临汾供电公司 | Air-cooled control device |
-
2015
- 2015-04-23 CN CN201520251623.6U patent/CN204614592U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655095A (en) * | 2016-03-22 | 2016-06-08 | 国网山西省电力公司临汾供电公司 | Air-cooled control device |
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