CN204117769U - Forced oil-circulation air-cooled transformer and cooler thereof and cooling system - Google Patents
Forced oil-circulation air-cooled transformer and cooler thereof and cooling system Download PDFInfo
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- CN204117769U CN204117769U CN201420584537.2U CN201420584537U CN204117769U CN 204117769 U CN204117769 U CN 204117769U CN 201420584537 U CN201420584537 U CN 201420584537U CN 204117769 U CN204117769 U CN 204117769U
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- 238000001816 cooling Methods 0.000 title claims abstract description 20
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Transformer Cooling (AREA)
Abstract
The utility model discloses a kind of forced oil-circulation air-cooled transformer and cooler thereof and cooling system, comprise master switch (1ZK), to be connected with described master switch (1ZK) and for providing the oil-immersed pump (1BD) of cold oil, and for carrying out the multiple fans (1FD) cooled, this cooler also comprises: be separately positioned on the multiple air switches (1K) between each fan (1FD) and described master switch (1ZK).To solve when ambient temperature is lower bleed in transformer oil, damage transformer insulated problem, and the quantity run by controlling fan saves electric energy effectively, ensure that the science safe operation of transformer.
Description
Technical field
The utility model relates to transformer Cooling, particularly, relates to a kind of forced oil-circulation air-cooled transformer and cooler thereof and cooling system.
Background technology
Forced oil-circulation is air-cooled is that one makes oil circulate in radiator, utilizes fan that air is blown over radiator, uses oil pump to increase oily circulation ratio simultaneously, strengthen the type of cooling of cooling effect.Existing forced oil-circulation air-cooled transformer contains 4 groups of coolers, often organize cooler to be made up of an oil-immersed pump and two desk fans, often organize cooler can carry out work, auxiliary, for subsequent use and hold function switching by handle, be placed in the cooler of work, cooler is in conventional operating condition; Be placed in auxiliary cooler, the startup optimization when transformer temperature and electric current reach certain threshold value; Be placed in the cooler for subsequent use startup optimization when the Cooler Fault run; Be placed in the cooler of stopping, electric power loop disconnects.
When operating fan power switch tripping operation, in running order cooler is by forced outage, and cooler for subsequent use cannot open certainly.If find that summer operation will cause the rapid rising of transformer temperature not in time, it is unfavorable to run transformer health.And when winter, transformer normally ran, only stay single group cooler to run, can meet upper strata oil temperature does not reach 55 DEG C, but due to the deployment scenarios of cooler, transformer both sides temperature deviation will be caused more than 4 DEG C, belong to and do not conform to lattice point.
When the temperature of the surroundings is low (less than 25 DEG C), condensation is separated out by the moisture in transformer oil, and be attached to transformer insulated component surface, even if temperature of oil in transformer gos up again, the moisture of separating out also can not be dissolved in transformer oil more uniformly, and these moisture of separating out will damage transformer insulated.In existing design, often organize chiller circuit and comprise an oil-immersed pump motor, two fan motor, three equipment together can only be thrown and move back, coil the operation of electricity in China of state from two main transformers, when the temperature of the surroundings is low, transformer operating temperature is everlasting less than 20 DEG C, there is the problem that free moisture corrodes Transformer Winding insulation.
Utility model content
The purpose of this utility model is to provide a kind of forced oil-circulation air-cooled transformer cooler and cooler thereof and cooling system, this forced oil-circulation air-cooled transformer cooler can to solve when ambient temperature is lower bleed in oil, damage transformer insulated problem, and the quantity run by controlling fan has saved electric energy effectively, ensure that the science safe operation of transformer.
To achieve these goals, an aspect of the present utility model provides a kind of forced oil-circulation air-cooled transformer cooler, comprise master switch, to be connected with described master switch and for providing the oil-immersed pump of cold oil, and for carrying out the multiple fans cooled, wherein, this cooler also comprises: be separately positioned on the multiple air switches between each fan and described master switch.
Preferably, described multiple fan is 2.
Another aspect of the present utility model provides a kind of forced oil-circulation air-cooled transformer cooling system, comprise multiple cooler and multiple mode of operation selection circuit, the mode of operation selection circuit that a cooler in the plurality of cooler is corresponding with the plurality of mode of operation selection circuit is electrically connected, wherein, described cooler is above-mentioned forced oil-circulation air-cooled transformer cooler.
Preferably, described mode of operation selection circuit comprises the mode of operation diverter switch with many group contacts, and one group of contact in this mode of operation diverter switch at least one the mode of operation selection circuit in described multiple mode of operation selection circuit is directly connected with power supply.
Preferably, the described described one group of contact be directly connected with power supply is mode of operation contact.
An also aspect of the present utility model provides a kind of transformer, and comprise transformer body, wherein, this transformer also comprises above-mentioned forced oil-circulation air-cooled transformer cooling system.
Pass through technique scheme, use the forced oil-circulation air-cooled transformer cooler that the utility model provides, between each fan and master switch, multiple air switch is set respectively, each fan is not only controlled by master switch, but can drop into selectively, promote temperature of oil in transformer in winter operation, to solve when ambient temperature is lower bleed in transformer oil, damage transformer insulated problem, and the quantity run by controlling fan has saved electric energy effectively, ensure that the science safe operation of transformer.
Other feature and advantage of the present utility model are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:
Fig. 1 is the circuit connection diagram of the forced oil-circulation air-cooled transformer cooler provided according to an execution mode of the present utility model; And
Fig. 2 is the circuit connection diagram of forced oil-circulation air-cooled transformer (the first cooler and the 4th cooler) cooling system provided according to the utility model execution mode.
Description of reference numerals
RD controls insurance
1ZK, 4ZK master switch
1K, 4K air switch
1KK, 4KK mode of operation diverter switch
1BC, 4BC contactor
1BC ', 4BC ' contactor normal opened contact
1BC ", 4BC " contactor normally closed contact
1BD, 4BD oil-immersed pump
1FD, 4FD fan
1BRJ，1FRJ1，1FRJ2，
4BRJ, 4FRJ1,4FRJ2 thermal relay
3ZJ, 4ZJ auxiliary relay
1SJ, the 2SJ time relay
3ZJ ', 4ZJ ' auxiliary relay normal opened contact
1SJ ', 2SJ ' time relay normal opened contact
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
Fig. 1 is the circuit connection diagram of the forced oil-circulation air-cooled transformer cooler provided according to an execution mode of the present utility model.As shown in Figure 1, this forced oil-circulation air-cooled transformer cooler comprises master switch 1ZK, to be connected with described master switch 1ZK and for providing the oil-immersed pump 1BD of cold oil, and for carrying out the multiple fan 1FD cooled, wherein, this cooler also comprises: be separately positioned on the multiple air switch 1K between each fan 1FD and described master switch 1ZK.
Under the prerequisite that two groups of chiller belt oil-immersed pumps run, when four desk fan 1FD, two desk fan 1FD, a desk fan 1FD run, transformer upper strata oil temperature is compared.Reached a conclusion by test of many times: when fan 1FD quantity is two, temperature of oil in transformer can maintain in best oil temperature (30 DEG C-60 DEG C) scope.Facts have proved, fan 1FD quantity maintains two and meets need of production (during test, ambient temperature is :-2 DEG C ~+5 DEG C).Therefore, multiple fan 1FD of the present utility model is preferably 2.
Fig. 2 be provide according to the utility model execution mode forced oil-circulation air-cooled transformer (the first cooler and the 4th cooler, second and the 3rd cooler omit and do not draw) the circuit connection diagram of cooling system.As shown in Figure 2, this forced oil-circulation air-cooled transformer cooling system comprises multiple cooler and multiple mode of operation selection circuit, the mode of operation selection circuit that a cooler in the plurality of cooler is corresponding with the plurality of mode of operation selection circuit is electrically connected, wherein, described cooler is above-mentioned forced oil-circulation air-cooled transformer cooler.
Preferably, described mode of operation selection circuit comprises the mode of operation diverter switch 1KK and 4KK with many group contacts, and this mode of operation diverter switch 1KK at least one the mode of operation selection circuit in described multiple mode of operation selection circuit is directly connected with power supply with group contact of in 4KK.Wherein, the described described one group of contact be directly connected with power supply is mode of operation contact.
In the execution mode of Fig. 2, mode of operation diverter switch 1KK is directly connected with power supply with 5,6 contacts of 4KK, and 5,6 contacts are operating contact (second is identical with the 4th chiller configuration therefore for drawing with first with the 3rd cooler).Be example in this embodiment below, introduce the course of work of forced oil-circulation air-cooled transformer cooling system.
First, the first cooler control handle is placed in service position (connect 5,6 contacts and 11,12 contacts), the 4th cooler control handle is placed in spare space (connecting 7,8 contacts and 9,10 contacts).
When energized, closed-loop path will be formed by with lower component: power supply → mode of operation diverter switch 1KK 5,6 contacts → thermal relay 1BRJ → thermal relay 1FRJ1 → thermal relay 1FRJ2 → contactor 1BC → zero line N, now contactor 1BC connects, contactor normal opened contact 1BC ' closes, contactor normally closed contact 1BC " disconnect, the fan 1FD of the first cooler and oil-immersed pump 1BD runs.
If 5 of the mode of operation diverter switch 1KK of the first cooler, 6 contacts are connected with master switch 1ZK, (conventional cooler system connected mode), following problem will be there will be: when the handle of the first cooler is placed in service position, when fan 1FD or oil-immersed pump 1BD fault and master switch 1ZK trip, now automatically should start fan 4FD and oil-immersed pump 4BD that control handle is placed in the 4th cooler of spare space, but because the tripping operation of master switch 1ZK, cause forming loop, auxiliary relay 4ZJ can not connect, therefore the fan 4FD of the 4th cooler and oil-immersed pump 4BD can not start, if find not in time, the rapid rising of transformer temperature will be caused.
In order to head it off, one group of contact (operating contact in the mode of operation diverter switch 1KK adopting the utility model to provide and 4KK, be 5 in the present embodiment, 6 contacts) connected mode that is directly connected with power supply, when fan 1FD or the oil-immersed pump 1BD fault of the first cooler, thermal relay 1BRJ, 1FRJ1 and 1FRJ2 disconnects, contactor 1BC dead electricity, contactor normal opened contact 1BC ' is caused to disconnect, the normally closed contact 1BC of contactor " closed, now still will form closed-loop path by with lower component: 5 of power supply → mode of operation diverter switch 1KK, 11 of 6 contacts → mode of operation diverter switch 1KK, 12 contacts → time relay 2SJ → zero line N, now time relay 2SJ connects, time relay normal opened contact 2SJ ' closes, auxiliary relay 4ZJ is caused to connect, auxiliary relay normal opened contact 4ZJ ' closes, closed-loop path will be formed: control 7 of insurance RD → mode of operation diverter switch 4KK by with lower component, 8 contacts → thermal relay 4BRJ → thermal relay 4FRJ1 → thermal relay 4FRJ2 → contactor 4BC → zero line N, now contactor 4BC connects, contactor normal opened contact 4BC ' closes, contactor normally closed contact 4BC " disconnect, the fan 4FD of the 4th cooler and oil-immersed pump 4BD runs.
Next, the first cooler control handle is placed in aided location (connecting 1,2 contacts and 15,16 contacts), the 4th cooler control handle is placed in spare space (connecting 7,8 contacts and 9,10 contacts).
(now need to add cooler when transformer upper strata oil temperature reaches threshold value (the utility model is preferably 55 DEG C) and assist transformer cooling), temperature relay 1WJ, 4WJ (not drawing) connects, its normal opened contact 3, 4 close, auxiliary relay 3ZJ connects, auxiliary relay normal opened contact 3ZJ ' closes, closed-loop path will be formed: control 1 of insurance RD → mode of operation diverter switch 1KK by with lower component, 2 contacts → thermal relay 1BRJ → thermal relay 1FRJ1 → thermal relay 1FRJ2 → contactor 1BC → zero line N, now contactor 1BC connects, contactor normal opened contact 1BC ' closes, the normally closed contact 1BC ' of contactor disconnects, the fan 1FD of the first cooler and oil-immersed pump 1BD runs.When transformer upper strata oil temperature is reduced to 45 DEG C, temperature relay 1WJ (not drawing) disconnects, and cause contactor 3ZJ to disconnect, fan 1FD and the oil-immersed pump 1BD of the first cooler are out of service.
When the electric current of transformer reaches threshold value (the utility model is preferably 1.05Ie), relay BFJ (not drawing) connects, relay normally open contact BFJ ' closes, time relay 1SJ connects, time relay normal opened contact 1SJ ' closes, auxiliary relay 3ZJ connects, and auxiliary relay normal opened contact 3ZJ ' closes, and the fan 1FD of the same first cooler and oil-immersed pump 1BD runs.
When the first cooler fan 1FD or oil-immersed pump 1BD fault, and it is (now the same when transformer upper strata oil temperature is greater than definite value more than 55 degree or electric current, auxiliary relay normal opened contact 3ZJ ' closes), thermal relay 1BRJ, 1FRJ1 and 1FRJ2 disconnects, contactor 1BC dead electricity, contactor normal opened contact 1BC ' is caused to disconnect, the normally closed contact 1BC of contactor " closed, closed-loop path will be formed: control 1 of insurance RD → mode of operation commutation circuit 1KK by with lower component, 15 of 2 contacts → mode of operation commutation circuit 1KK, 16 contacts → time relay 2SJ → zero line N, now time relay 2SJ connects, time relay normal opened contact 2SJ ' closes, auxiliary relay 4ZJ connects, as above analyze, the fan 4FD of the 4th cooler and oil-immersed pump 4BD runs.
In other embodiments, first cooler and the 4th cooler handle can also be placed in other position, and the second cooler, the 3rd cooler and other cooler also can equally so put into operation, because this operational mode is general knowledge as well known to those skilled in the art, therefore repeat no more.
The utility model also provides a kind of transformer, comprises transformer body, and wherein, this transformer also comprises above-mentioned forced oil-circulation air-cooled transformer cooling system.
Pass through technique scheme, use the forced oil-circulation air-cooled transformer cooler that the utility model provides, between each fan and master switch, multiple air switch is set respectively, each fan is not only controlled by master switch, but can drop into selectively, to solve when ambient temperature is lower bleed in oil, damage transformer insulated problem, and the quantity run by controlling fan has saved electric energy effectively, ensure that the science safe operation of transformer.
Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned execution mode; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection range of the present utility model.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different execution mode of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (6)
1. a forced oil-circulation air-cooled transformer cooler, comprise master switch (1ZK), to be connected with described master switch (1ZK) and for providing the oil-immersed pump (1BD) of cold oil, and for carrying out the multiple fans (1FD) cooled, it is characterized in that, this cooler also comprises:
Be separately positioned on the multiple air switches (1K) between each fan and described master switch.
2. cooler according to claim 1, is characterized in that, described multiple fan (1FD) is 2.
3. a forced oil-circulation air-cooled transformer cooling system, comprise multiple cooler and multiple mode of operation selection circuit, the mode of operation selection circuit that a cooler in the plurality of cooler is corresponding with the plurality of mode of operation selection circuit is electrically connected, it is characterized in that, described cooler is forced oil-circulation air-cooled transformer cooler according to claim 1 and 2.
4. cooling system according to claim 3, it is characterized in that, described mode of operation selection circuit comprises the mode of operation diverter switch (1KK with many group contacts, 4KK), one group of contact in this mode of operation diverter switch (1KK, 4KK) at least one mode of operation selection circuit in described multiple mode of operation selection circuit is directly connected with power supply.
5. cooling system according to claim 4, is characterized in that, the described described one group of contact be directly connected with power supply is mode of operation contact.
6. a transformer, comprises transformer body, it is characterized in that, this transformer also comprises the forced oil-circulation air-cooled transformer cooling system any one of claim 3-5 described in claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420584537.2U CN204117769U (en) | 2014-10-10 | 2014-10-10 | Forced oil-circulation air-cooled transformer and cooler thereof and cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420584537.2U CN204117769U (en) | 2014-10-10 | 2014-10-10 | Forced oil-circulation air-cooled transformer and cooler thereof and cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204117769U true CN204117769U (en) | 2015-01-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420584537.2U Active CN204117769U (en) | 2014-10-10 | 2014-10-10 | Forced oil-circulation air-cooled transformer and cooler thereof and cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204117769U (en) |
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2014
- 2014-10-10 CN CN201420584537.2U patent/CN204117769U/en active Active
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