CN206541207U - A kind of oil immersed forced air cooled transform cooling blower control circuit - Google Patents
A kind of oil immersed forced air cooled transform cooling blower control circuit Download PDFInfo
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- CN206541207U CN206541207U CN201621034234.9U CN201621034234U CN206541207U CN 206541207 U CN206541207 U CN 206541207U CN 201621034234 U CN201621034234 U CN 201621034234U CN 206541207 U CN206541207 U CN 206541207U
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- auxiliary reclay
- forced air
- air cooled
- terminal
- control circuit
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Abstract
The utility model discloses a kind of oil immersed forced air cooled transform cooling blower control circuit, belong to air-blower control field.After multiple blower fan major loop controlling switch circuit in parallel, connected with the auxiliary reclay KC1 normally opened contacts after short circuit, on the two poles of the earth for being connected to the power supply of the oil immersed forced air cooled transform cooling blower control circuit；After other multiple blower fan major loop controlling switch circuit in parallel, connected with auxiliary reclay KC1 normally opened contacts, on the two poles of the earth for being connected to the power supply of the oil immersed forced air cooled transform cooling blower control circuit；After standby fan major loop controlling switch circuit in parallel, connected with auxiliary reclay KC2 normally opened contacts, on the two poles of the earth for being connected to the power supply of the oil immersed forced air cooled transform cooling blower control circuit.
Description
Technical field
The utility model is related to air-blower control field, more particularly to a kind of oil immersed forced air cooled transform cooling blower control electricity
Road.
Background technology
Oil immersed forced air cooled transform applies to most of industrial and mining enterprises, and the type transformer in operation must be cold using N platforms
But blower fan ensures the cooling needs under transformer different loads.Current cooling blower is generally as follows using control mode：
The start and stop of cooling blower are using " automatic " control and " manual " control two ways.During " automatic " control mode, become
N Fans needed for depressor all become oil surface temperature and high factory's time-dependent current setting control by high factory；During " manual " control mode, wind
Machine is controlled each fan power switch start and stop by operations staff manually.
There is certain weak point in both controls that cooling blower is generally used, what " automatic " control mode was present
Shortcoming：
(1) season in spring and autumn, daily temperature Change amplitude is larger, and high factory's change oil temperature amplitude of variation is also larger, such a operation side
Formula easily causes that the daily start-stop of four Fans is more frequent, increases the failure frequency of transformer cooling fan.
(2) there is failure risk in temperature control loop, once temperature control loop failure, all blower fans of transformer all can not
Automatically turn on or automatic stoppage in transit, cause the super upper limit of transformer oil surface temperature or transformer supercooling, cause transformer fault.
The shortcoming that " manual " control mode is present：When temperature occurs to change by a relatively large margin, to ensure the suitable of transformer
Running temperature needs artificial frequently adjustment fan operation quantity, and such as personnel's adjustment is possible to cause transformer oil surface temperature not in time
The super upper limit or transformer supercooling, cause transformer fault.
Chinese utility model patent, publication number：1549281, publication date：On November 24th, 2004, disclose transformer cold
But fan controller, is installed by the electric current relay auxiliary contact that are introduced from transformer master control room, from transformer box wall
Temperature controller introduce temperature controller auxiliary contact, the time relay, electric current relay auxiliary contact, low-voltage circuit breaker,
The control circuit of the electrical equipments such as A.C. contactor, thermal overload relay, auxiliary reclay, selecting switch composition, to transformer
Each group of cooling blower provides " work, auxiliary, standby, stopping " four kinds of selectable state of a controls, and user can be according to load
The change in different and season and select different control modes, make the run time relative equilibrium of every group of cooling blower, save energy
Source, reduces noise, improves the service life of product.Its weak point is：The patent is to introduce blower fan control in transformer master control room
Circuit processed, circuit structure is complicated, is not suitable for promoting the use of on the oil immersed forced air cooled transform of the present invention.
Utility model content
1. the utility model technical problem to be solved
The problem of existing for the oil immersed forced air cooled transform of prior art under the two kinds of control modes generally used, this reality
A kind of oil immersed forced air cooled transform cooling blower control circuit is provided with new.It ensures that transformer possesses safe cooling requirement
Under the conditions of, reduce start and stop and the human users of cooling blower.
2. technical scheme
To solve the above problems, the technical scheme that the utility model is provided is：
After a kind of oil immersed forced air cooled transform cooling blower control circuit, multiple blower fan major loop controlling switch circuit in parallel,
Connected with the auxiliary reclay KC1 normally opened contacts after short circuit, be connected to the oil immersed forced air cooled transform cooling blower control circuit
Power supply the two poles of the earth on；It is normally opened tactile with auxiliary reclay KC1 after other multiple blower fan major loop controlling switch circuit in parallel
On point series connection, the two poles of the earth for being connected to the power supply of the oil immersed forced air cooled transform cooling blower control circuit；Standby fan master
After circuit controls on-off circuit is in parallel, is connected with auxiliary reclay KC2 normally opened contacts, be connected to the oil immersed forced air cooled transform cold
But on the two poles of the earth of the power supply of draught fan control circuit.
Preferably, the blower fan major loop controlling switch circuit is by auxiliary reclay 1KH normally-closed contacts and auxiliary reclay
1KM coils are composed in series, and the connected mode of major loop controlling switch circuit of other blower fans including standby fan is the same
's.
Preferably, the quantity of described multiple blower fans and the quantity of other multiple blower fans are all higher than being equal to 1.
Preferably, the power supply of blower fan, which is powered, above includes breaker 1QF, auxiliary reclay 1KM normally-closed contacts and middle relay
Device 1KH coils, blower fan is connected with auxiliary reclay 1KH coils, and auxiliary reclay 1KH coils are normally closed tactile with auxiliary reclay 1KM
Point series connection, auxiliary reclay 1KM normally-closed contacts are connected with breaker 1QF and are followed by three-phase circuit.
Preferably, in addition to change-over switch, after the terminal 1,3 of change-over switch and 5 inside short circuits, with auxiliary reclay KC1
Three normally opened contacts one end, start terminal, one end of auxiliary reclay KC1 coils, two of auxiliary reclay 1KM it is normally closed
The other end, auxiliary reclay KT1 one end and the high factory of contact become oil surface temperature relay POP one end connection；
The terminal L and terminal H, the auxiliary reclay KT1 other end, transformer that high factory becomes oil surface temperature relay POP are born
The one end for carrying electric current relay KA is both connected on the terminal 1 of change-over switch, and high factory becomes the oil surface temperature relay POP other end
Be connected with the other end of auxiliary reclay KC1 first normally opened contact, the transformer load electric current relay KA other end with
One end connection of the other end, auxiliary reclay KC1 normally-closed contact of auxiliary reclay KC1 second normally opened contact, it is middle
It is another with auxiliary reclay KC1 coil after the other end series connection auxiliary reclay KT1 of relay KC1 normally-closed contact coil
One end be connected to together the one of the power supply of the oil immersed forced air cooled transform cooling blower control circuit extremely on；
The other end of auxiliary reclay KC1 the 3rd normally opened contact is connected with stopping terminal, on the spot terminal and distant place end
After sub- short circuit, it is connected with another pole of the power supply of the oil immersed forced air cooled transform cooling blower control circuit；Terminal 2 is with turning
The terminal 2 for changing switch is connected, and the terminal 2 of change-over switch and the terminal 6 of change-over switch are connected.
3. beneficial effect
The technical scheme provided using the utility model, compared with prior art, is had the advantages that：
(1) after the utility model control loop is improved, when being run in cooling blower control mode " automatic " position, actual
There is part fan to be automatically controlled, air-blower control is equivalent to " semi-automatic " state；This measure first can avoid temperature control loop failure from making
Into all blower fans do not start or do not stop, second is that start and stop cause transformer temperature to change while can avoiding four Fans
It hurry up, reduction transformer cooling fan is while start-stop time, reduces the impact to blower motor；
(2) after the utility model control loop is improved, part fan keeps continuous operation, and remaining blower fan is controlled automatically by oil temperature
System, effectively the personnel of reducing can manually adjust the operation of fan operation blower fan quantity, it is to avoid caused by personnel's adjustment not in time
Cooling or supercooling are owed, all blower fans are also effectively reduced while the time opened, reduces station-service electricity；
(3) after the utility model control loop is improved, cooler " manual " control mode function is unaffected, and improves back
Road avoid because of auxiliary reclay KC1 failures and caused by the consequence that can not all open of all blower fans, this effect is in hot weather
Meaning is larger；
(4) all blower fans that the utility model avoids temperature control loop failure from causing do not start or not stopped, it is to avoid because in
Between relay failure and the consequence that causes all blower fans can not all open, improve the reliability of transformer cooling system；This
Effect is larger in hot weather meaning；
(5) the utility model avoids start and stop while all blower fans from causing transformer temperature change too fast, reduces transformer
Cooling blower is while start-stop time, reduces the impact to blower motor；
(6) the utility model reduction personnel manually adjust the operation of fan operation blower fan quantity, it is to avoid because of personnel's adjustment not
The deficient cooling or supercooling caused in time；
(7) the utility model effectively reduces all blower fans while the time opened, reduces station-service electricity.
Brief description of the drawings
Fig. 1 is that (each blower fan primary circuit is identical, herein only with a Fans loop chart in cooling blower primary power source loop
Show)；
Fig. 2 is N platform cooling blower control loops before transformation；
Fig. 3 is N platform cooling blower control loops after transformation.
Embodiment
To further appreciate that content of the present utility model, the utility model is described in detail with reference to drawings and Examples.
Embodiment 1
With reference to Fig. 1-3, a kind of oil immersed forced air cooled transform cooling blower control circuit, multiple blower fans (one and more than) are led back
After way control switch circuit in parallel, connected with the auxiliary reclay KC1 normally opened contacts after short circuit, be connected to the oil and become
On the two poles of the earth of the power supply of depressor cooling blower control circuit；Multiple blower fans (one and more than) major loop controlling switch in addition
After circuit in parallel, connected with auxiliary reclay KC1 normally opened contacts, be connected to the oil immersed forced air cooled transform cooling blower control electricity
On the two poles of the earth of the power supply on road；After standby fan major loop controlling switch circuit in parallel, with auxiliary reclay KC2 normally opened contacts
On series connection, the two poles of the earth for being connected to the power supply of the oil immersed forced air cooled transform cooling blower control circuit.
Blower fan major loop controlling switch circuit is connected by auxiliary reclay 1KH normally-closed contacts and auxiliary reclay 1KM coils
Composition, the connected mode of major loop controlling switch circuit of other blower fans including standby fan is the same.
Include breaker 1QF, auxiliary reclay 1KM normally-closed contacts and auxiliary reclay on the power supply current supply circuit of blower fan
1KH coils, blower fan is connected with auxiliary reclay 1KH coils, auxiliary reclay 1KH coils and auxiliary reclay 1KM normally-closed contacts
Series connection, auxiliary reclay 1KM normally-closed contacts are connected with breaker 1QF and are followed by three-phase circuit.
After the terminal 1,3 of change-over switch and 5 inside short circuits, one end with auxiliary reclay KC1 three normally opened contacts, open
Moved end, one end of auxiliary reclay KC1 coils, the other end, the auxiliary reclay of auxiliary reclay 1KM two normally-closed contacts
KT1 one end and high factory become oil surface temperature relay POP one end connection；
The terminal L and terminal H, the auxiliary reclay KT1 other end, transformer that high factory becomes oil surface temperature relay POP are born
The one end for carrying electric current relay KA is both connected on the terminal 1 of change-over switch, and high factory becomes the oil surface temperature relay POP other end
Be connected with the other end of auxiliary reclay KC1 first normally opened contact, the transformer load electric current relay KA other end with
One end connection of the other end, auxiliary reclay KC1 normally-closed contact of auxiliary reclay KC1 second normally opened contact, it is middle
It is another with auxiliary reclay KC1 coil after the other end series connection auxiliary reclay KT1 of relay KC1 normally-closed contact coil
One end be connected to together the one of the power supply of the oil immersed forced air cooled transform cooling blower control circuit extremely on；
The other end of auxiliary reclay KC1 the 3rd normally opened contact is connected with stopping terminal, on the spot terminal and distant place end
After sub- short circuit, it is connected with another pole of the power supply of the oil immersed forced air cooled transform cooling blower control circuit；Terminal 2 is with turning
The terminal 2 for changing switch is connected, and the terminal 2 of change-over switch and the terminal 6 of change-over switch are connected.
Embodiment 2
A kind of oil immersed forced air cooled transform cooling blower control circuit of the present embodiment, does not do to each element of existing control loop
Increase and decrease and variation, primary power source loop are not changed, control loop middle relay of one pair of short circuit on the basis of former wiring is retained
Device KC1 normally opened contact, controls the contact of two Fans, you can realizes and meets wanting for the type of cooling and function with minimum changes
Ask, be described as follows：
(1) (see Fig. 2) before optimal control mode：During " automatic " mode, all blower fans all by high factory become oil surface temperature after
Electrical equipment POP or transformer load electric current relay KA presses set value calculation；In " manual " position mode, by personnel to all
The division of transportation work style electromechanics source switch controls blower fan start and stop.
(2) (see Fig. 3) after optimal control mode：During " automatic " mode, two Fans become oil surface temperature relay by high factory
POP or transformer load electric current relay KA presses set value calculation, in addition blower fan by personnel to the electromechanical source switch of each transportation work style
Division controls blower fan start and stop.At " manual " position, wind is controlled to the division of the electromechanical source switch of all transportation work styles by personnel
Machine start and stop.
Embodiment 3
A kind of oil immersed forced air cooled transform cooling blower control circuit of the present embodiment, it is similar to Example 1, after short circuit in
Between relay KC1 normally opened contact on series connection two blower fan major loop controlling switch circuits (by auxiliary reclay 1KH normally-closed contacts
It is composed in series with auxiliary reclay 1KM coils), i.e. in normal state, at least two blower fans enter to oil immersed forced air cooled transform
Row cools, and keeps oil immersed forced air cooled transform normal work.
Auxiliary reclay KC1 normally opened contact connects two blower fan major loop controlling switch circuits (by auxiliary reclay 1KH
Normally-closed contact and auxiliary reclay 1KM coils are composed in series), i.e. after one switch of manual closing, two wind are at least closed every time
Machine, exactly increases by two blower fans and oil immersed forced air cooled transform is cooled down, and keeps oil immersed forced air cooled transform normal work.
When all fan troubles, i.e. auxiliary reclay KC2 coil obtains electric, auxiliary reclay KC2 normally opened contact
Closure, starts standby fan and oil immersed forced air cooled transform is cooled down, keep oil immersed forced air cooled transform normal work.
Schematically the utility model and embodiments thereof are described above, the description does not have restricted, accompanying drawing
Shown in be also one of embodiment of the present utility model, actual structure is not limited thereto.So, if this area
Those of ordinary skill enlightened by it, do not departing from the case that the utility model creates objective, designed without creative
The frame mode similar to the technical scheme and embodiment, all should belong to protection domain of the present utility model.
Claims (5)
1. a kind of oil immersed forced air cooled transform cooling blower control circuit, it is characterised in that multiple blower fan major loop controlling switch electricity
After road is in parallel, is connected with the auxiliary reclay KC1 normally opened contacts after short circuit, be connected to the oil immersed forced air cooled transform cooling blower
Control on the two poles of the earth of power supply of circuit；After other multiple blower fan major loop controlling switch circuit in parallel, with auxiliary reclay
KC1 normally opened contacts are connected, on the two poles of the earth for being connected to the power supply of the oil immersed forced air cooled transform cooling blower control circuit；It is standby
After blower fan major loop controlling switch circuit in parallel, connected with auxiliary reclay KC2 normally opened contacts, be connected to the oil
On the two poles of the earth of the power supply of transformer cooling fan control circuit.
2. a kind of oil immersed forced air cooled transform cooling blower control circuit according to claim 1, it is characterised in that the wind
Owner's circuit controls on-off circuit is composed in series by auxiliary reclay 1KH normally-closed contacts and auxiliary reclay 1KM coils.
3. a kind of oil immersed forced air cooled transform cooling blower control circuit according to claim 1, it is characterised in that described
The quantity of multiple blower fans and the quantity of other multiple blower fans are all higher than being equal to 1.
4. a kind of oil immersed forced air cooled transform cooling blower control circuit according to claim 1-3 any one, its feature
It is, breaker 1QF, auxiliary reclay 1KM normally-closed contacts and auxiliary reclay 1KH lines is included on the power supply current supply circuit of blower fan
Circle, blower fan is connected with auxiliary reclay 1KH coils, and auxiliary reclay 1KH coils are connected with auxiliary reclay 1KM normally-closed contacts,
Auxiliary reclay 1KM normally-closed contacts are connected with breaker 1QF and are followed by three-phase circuit.
5. a kind of oil immersed forced air cooled transform cooling blower control circuit according to claim 4, it is characterised in that also include
After change-over switch, the terminal 1,3 of change-over switch and 5 inside short circuits, one end with auxiliary reclay KC1 three normally opened contacts,
Start terminal, one end of auxiliary reclay KC1 coils, the other end of auxiliary reclay 1KM two normally-closed contacts, middle relay
Device KT1 one end and high factory become oil surface temperature relay POP one end connection；
High factory becomes oil surface temperature relay POP terminal L and terminal H, the auxiliary reclay KT1 other end, transformer load electricity
Current relay KA one end is both connected on the terminal 1 of change-over switch, and high factory becomes the oil surface temperature relay POP other end with
Between relay KC1 first normally opened contact other end connection, the transformer load electric current relay KA other end with it is middle
One end connection of the other end, auxiliary reclay KC1 normally-closed contact of relay KC1 second normally opened contact, middle relay
The other end after the other end series connection auxiliary reclay KT1 of device KC1 normally-closed contact coil with auxiliary reclay KC1 coil
Be connected to together the one of the power supply of the oil immersed forced air cooled transform cooling blower control circuit extremely on；
The other end of auxiliary reclay KC1 the 3rd normally opened contact is connected with stopping terminal, and terminal and distant place terminal are short on the spot
After connecing, it is connected with another pole of the power supply of the oil immersed forced air cooled transform cooling blower control circuit；Terminal 2 is opened with conversion
The terminal 2 of pass is connected, and the terminal 2 of change-over switch and the terminal 6 of change-over switch are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621034234.9U CN206541207U (en) | 2016-08-31 | 2016-08-31 | A kind of oil immersed forced air cooled transform cooling blower control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621034234.9U CN206541207U (en) | 2016-08-31 | 2016-08-31 | A kind of oil immersed forced air cooled transform cooling blower control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206541207U true CN206541207U (en) | 2017-10-03 |
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ID=59938110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621034234.9U Active CN206541207U (en) | 2016-08-31 | 2016-08-31 | A kind of oil immersed forced air cooled transform cooling blower control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206541207U (en) |
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2016
- 2016-08-31 CN CN201621034234.9U patent/CN206541207U/en active Active
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