CN109356833A - A kind of automatic control loop of forced-oil-air cooling Transformer Down Oil Pump - Google Patents
A kind of automatic control loop of forced-oil-air cooling Transformer Down Oil Pump Download PDFInfo
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- CN109356833A CN109356833A CN201811042071.2A CN201811042071A CN109356833A CN 109356833 A CN109356833 A CN 109356833A CN 201811042071 A CN201811042071 A CN 201811042071A CN 109356833 A CN109356833 A CN 109356833A
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- Prior art keywords
- oil
- oil pump
- cooling
- circuit
- control loop
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transformer Cooling (AREA)
- Protection Of Transformers (AREA)
Abstract
The invention discloses a kind of automatic control loops of forced-oil-air cooling Transformer Down Oil Pump, it include: first manual circuit, the first choice switching circuit, second manual loop and the second selection switching circuit, wherein: by controlling first manual circuit, the first choice switching circuit, second manual loop, it is described second selection switching circuit at least primary Ioops on/off state, forced-oil-air cooling Transformer Down Oil Pump is set to generate oil stream in the first cooling oil pump of the first control loop, second cooling oil pump of the second control loop generates to be switched between oil stream or tripping off-position.The automatic control loop for implementing forced-oil-air cooling Transformer Down Oil Pump of the invention, after scavenge oil pump tripping, the automatic emergency bearing oil pump that starts cools down transformer, and avoiding tripping due to oil pump leads to transformer stoppage in transit or load down.
Description
Technical field
The present invention relates to nuclear power field more particularly to a kind of automatic control loops of forced-oil-air cooling Transformer Down Oil Pump.
Background technique
Cooling Methods of Transformers in the prior art is forced oil-circulation air-cooled transformer, and existing major technique is asked
Topic is: not having natural cooling ability, cooling oil pump switching mode is manual switching, for example, selection switch can manually boot
First oil pump or the second oil pump.Emergency bearing oil pump can not be automatically switched to when main oil pump failure, will lead to transformer main oil pump failure
Cooling is just lost afterwards, and then transformer is caused to trip.
Meanwhile emergency bearing oil pump need to be manually booted after the main oil pump failure of the forced-oil-air cooling transformer in eight minutes, otherwise
Tripping transformer high-low-voltage is switched after losing cooling eight minutes.For the manual switching function of cooperating cooling oil pump, existing side
Formula is to select oil flow relay normally closed contact individually to control using manual switch to trigger the forced-oil-air cooling transformer delay tripping, when
Oil flow relay normally closed contact is closed when fuel pump outlet is without oil stream, Time delay trip signal.Which
Be: forced-oil-air cooling transformer loses that cooling trip signal triggering logic is excessively single, and oil flow relay is sent out because of mechanical card plug
The error signal without oil stream will lead to the case where false triggering is tripped in the case where oil pump practical normal operation out.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of automatic control of forced-oil-air cooling Transformer Down Oil Pump
Circuit, after scavenge oil pump tripping, the automatic emergency bearing oil pump that starts cools down transformer, avoids causing to become since oil pump trips
Depressor is stopped transport or load down.
In order to solve the above-mentioned technical problem, the embodiment provides a kind of forced-oil-air cooling Transformer Down Oil Pumps
Automatic control loop, comprising: the first control loop equipped with the first cooling oil pump, the first control loop include: to control manually
System starts or closes down the first manual circuit of the first cooling oil pump and is connected to the first choice switching circuit of the first cooling oil pump；
First choice switching circuit includes at least: to control whether that the first oil stream instruction control for connecting first choice switching circuit is single
Member and the first circuit being connected in the first oil stream instruction control unit and second servo loop, and equipped with the second cooling oil pump
Second control loop, the second control loop include: that can manually control second manual time that starts or closes down the second cooling oil pump
Road and the second selection switching circuit for being connected to the second cooling oil pump: the second selection switching circuit includes at least: being to control
No the second oil stream for connecting the second selection switching circuit indicates control unit and is connected in the second oil stream instruction control unit
Tertiary circuit and the 4th circuit；Wherein: by control first manual circuit, first choice switching circuit, the second manual loop,
Second selection switching circuit at least primary Ioops on/off state, make forced-oil-air cooling Transformer Down Oil Pump first control
First cooling oil pump in circuit processed generates oil stream, the second cooling oil pump of the second control loop generates oil stream or tripping off-position
Between switch over.
Wherein, the first oil stream instruction control unit is connected with the second oil stream instruction control unit, first choice switching circuit
Switching the conducting of the first circuit, the second selection switching circuit switches the conducting of the 4th circuit, and the first cooling oil pump starts and generate oil stream,
Second oil stream indicates that control unit disconnects the second control loop of locking；
Wherein, when the first cooling oil pump stops oil stream, the second oil stream indicates that control unit is connected, the second selection switching circuit switching
Tertiary circuit conducting, the second cooling oil pump start and generate oil stream, and the first oil stream indicates that control unit disconnects the first control of locking
Circuit.
Wherein, be equipped in the first circuit and/or second servo loop first time to control the first control loop of conducting after
Electric appliance；
Second time relay to control the second control loop of conducting is equipped in tertiary circuit or the 4th circuit.
Wherein, the first control loop further includes that first to be connected respectively with the first cooling oil pump and first time relay moves
Make coil；Second control loop further includes the second actuating wire being connected respectively with the second cooling oil pump and second time relay
Circle.
Wherein, the second selection switching circuit switching tertiary circuit conducting, the second time relay excitation, the second time relay
Device normal opened contact is closed after of short duration delay, makes the second actuation coil excitation, and the second cooling oil pump starts and generates oil stream.
Wherein, the first oil stream instruction control unit is connected with the second oil stream instruction control unit, the second selection switching circuit
Switching tertiary circuit conducting, first choice switching circuit switches second servo loop conducting, and the second cooling oil pump starts and generate oil stream,
First oil stream indicates that control unit disconnects the first control loop of locking；
Wherein, when the second cooling oil pump stops oil stream, the first oil stream indicates that control unit is connected, the switching of first choice switching circuit
The conducting of first circuit, the first cooling oil pump start and generate oil stream, and the second oil stream indicates that control unit disconnects the second control of locking
Circuit.
Wherein, first choice switching circuit switches the conducting of the first circuit, first time relay excitation, first time relay
Device normal opened contact is closed after of short duration delay, makes the first actuation coil excitation, and the first cooling oil pump starts and generates oil stream.
Wherein: the fault trip circuit to control forced-oil-air cooling transformer delay tripping, fault trip circuit is at least wrapped
The the first oil stream instruction control unit, the second oil stream instruction control unit and the alarm that are connected in series and delay tripping unit are included,
Wherein: the first oil stream indicates that the normally closed contact closure of control unit, the second oil stream instruction control unit normally closed contact are also closure
When, alarm and delay tripping unit carry out alarm and/or delay tripping.
The automatic control loop of forced-oil-air cooling Transformer Down Oil Pump provided by the present invention, has the following beneficial effects:
The first, pass through control first manual circuit, first choice switching circuit, the second manual loop, the second selection switching circuit
In at least primary Ioops on/off state, make forced-oil-air cooling Transformer Down Oil Pump in the first cooling of the first control loop
Oil pump generates to be switched between oil stream, the second cooling oil pump generation oil stream of the second control loop or tripping off-position, can
Forced oil-circulation air-cooled transformer is solved because cooling oil pump is without automatic switching function, when main oil pump failure can not switch to spare oil
Pump, the problem of causing transformer to lose cooling, and then transformer is caused to trip, increases the reliability and safety of system.
The second, the triggering logic that forced-oil-air cooling transformer loses cooling trip signal is improved, triggering trip signal is avoided
Logic is excessively single to lead to mistrip, promotes transformer safety and reliability.
Third, structure are simplified, easy construction, and adaptable and experiment is very convenient.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the circuit structure signal of the automatic control loop of forced-oil-air cooling Transformer Down Oil Pump of the embodiment of the present invention
Figure.
Fig. 2 is that the automatic control loop of forced-oil-air cooling Transformer Down Oil Pump of the embodiment of the present invention manually boots mode one
Electrical block diagram.
Fig. 3 is that the automatic control loop of forced-oil-air cooling Transformer Down Oil Pump of the embodiment of the present invention manually boots mode two
Electrical block diagram.
Fig. 4 is the automatic control loop selection switching circuit starting of forced-oil-air cooling Transformer Down Oil Pump of the embodiment of the present invention
The electrical block diagram of mode one.
Fig. 5 is the automatic control loop selection switching circuit starting of forced-oil-air cooling Transformer Down Oil Pump of the embodiment of the present invention
The electrical block diagram of mode two.
Fig. 6 is the electricity in the automatic control loop fault trip circuit of forced-oil-air cooling Transformer Down Oil Pump of the embodiment of the present invention
Line structure schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In conjunction with referring to shown in Fig. 1-Fig. 6, being the reality of the automatic control loop of forced-oil-air cooling Transformer Down Oil Pump of the present invention
Apply example one.
The automatic control loop of forced-oil-air cooling Transformer Down Oil Pump in the present embodiment, comprising: be equipped with the first cooling oil
First control loop A, the first control loop A of pump includes: that can manually control start or close down the first cooling oil pump first
The manual loop A1 and first choice switching circuit A2 for being connected to the first cooling oil pump；
First choice switching circuit A2 is included at least: to control whether that the first oil stream for connecting first choice switching circuit A2 refers to
The the first circuit A21 and second servo loop for showing control unit 176SD and being connected on the first oil stream instruction control unit 176SD
A22, and
The second control loop B, the second control loop B equipped with the second cooling oil pump includes: that can manually control to start or close down
Second manual loop B1 of the second cooling oil pump and the second selection switching circuit B3: the second for being connected to the second cooling oil pump select
Switching circuit B3 is included at least: to control whether that the second oil stream for connecting the second selection switching circuit B3 indicates control unit
The 175SD and tertiary circuit B31 and the 4th circuit B32 being connected on the second oil stream instruction control unit 175SD；Wherein: logical
Cross control first manual circuit A1, first choice switching circuit A2, the second manual loop B1, second selection switching circuit B3 in extremely
The state of few primary Ioops on/off, makes forced-oil-air cooling Transformer Down Oil Pump in the first cooling oil pump of the first control loop A
Generate oil stream, the second cooling oil pump of the second control loop B is generated and switched between oil stream or tripping off-position.
When it is implemented, first manual circuit A1, first choice switching circuit A2, the second manual loop B1, the second selection
At least the control of primary Ioops ON/OFF state can realize switching by driving switch in switching circuit B3.In the present embodiment
Driving switch be 176CC, the driving switch in the A1 of first manual circuit is 1-2, and the driving switch in the first circuit A21 is 3-
4, the driving switch in second servo loop A22 is 5-6, and the driving switch in the second manual loop B1 is 7-8, in tertiary circuit B31
Driving switch be 9-10, the driving switch in the 4th circuit B31 is 11-12.
Further include and the first cooling oil pump and the first actuating wire being connected in the first manual circuit A1 of first control loop A
Enclose 175JA and contact 175JS；It further include being connected with the second cooling oil pump in the second manual loop B1 of second control loop B
Second actuation coil 179JA and contact 179JS.
The effect of the first oil stream instruction control unit 176SD of first choice switching circuit A2 is to control whether connection first
Switching circuit A2 is selected, in the specific implementation can be oil flow relay.Be additionally provided in first choice switching circuit A2 to
First time the relay 173XK and contact 173X of the first control loop A of control conducting, one end of contact 173X pass through first
Actuation coil 175JA the first cooling oil pump of connection, the other end connect first time relay 173XK.
Further, the first circuit A21 being connected on the first oil stream instruction control unit 176SD is connected by contact 173X
First time relay 173XK is met, contact 175JS and first actuation coil 175JA the first cooling oil pump of connection are passed through.It is connected to
First oil stream instruction control unit 176SD on second servo loop A22 be connected to contact 173X and first time relay 173XK it
Between.
The effect of the second oil stream instruction control unit 175SD of second selection switching circuit B3 is to control whether connection second
Switching circuit B3 is selected, in the specific implementation can be oil flow relay.Second selection switching circuit B3 in be additionally provided with to
The second time relay 174XK of the second control loop B of control conducting and one end of contact 174X, contact 174X pass through second
Actuation coil 179JA the second cooling oil pump of connection, the other end connect the second time relay 174XK.
Further, the tertiary circuit B31 being connected on the second oil stream instruction control unit 175SD is connected by contact 174X
The second time relay 174XK is met, contact 179JS and second actuation coil 179JA the second cooling oil pump of connection are passed through.It is connected to
Second oil stream instruction control unit 175SD on the 4th circuit B32 be connected to contact 174X and the second time relay 174XK it
Between.
It is to be understood that the effect of first time relay 173XK, the second time relay 174XK are: passing through delay
Realize the selection to the first cooling oil pump and the second cooling oil pump, the first oil stream indicates control unit 176SD, the instruction of the second oil stream
The effect of control unit 175SD is: realizing the function of the first cooling oil pump and the switching of the second cooling oil pump, realizes that oil pump is just all the way
Often another way oil pump is latched after operation.
When specific implementation manually boots mode, as shown in Fig. 2, driving switch 176CC connects 1-2 contact, realization is opened manually
Dynamic first cooling oil pump operation.As shown in figure 3, driving switch 176CC connects 7-8 contact, realization manually boots the first cooling oil
Pump operation.
When automatic control mode is embodied, as shown in figure 4, doing main oil pump, the second cooling oil pump for the first cooling oil pump
Do the embodiment of stand-by pump.
When putting into operation for the first time, the first oil stream indicates that control unit 176SD and the second oil stream instruction control unit 175SD are connected,
First choice switching circuit A2 switches the first circuit A21 conducting, 3-4 contact；Second selection switching circuit B3 switching the 4th
Circuit B32 conducting, 11-12 contact, the first actuation coil 175JA excitation, the first cooling oil pump start and generate oil stream, the
Two oil streams indicate that the normally closed disconnection of control unit 175SD is latched the second control loop B.
When the first cooling oil pump failure, stop oil stream, the second oil stream indicates that control unit 175SD is connected, and the second selection is cut
Road B3 switching tertiary circuit B31 conducting is gained, the second time relay 174XK excitation, the second time relay 174XK is normally opened to be connect
Point 174X is closed after of short duration delay, makes the second actuation coil 179JA excitation, and the second cooling oil pump starts and generates oil stream.?
After second cooling oil pump starts and generates oil stream, the first oil stream indicates that control unit 176SD disconnects the first control loop A of locking.
As shown in figure 5, making main oil pump for the second cooling oil pump, the first cooling oil pump does the embodiment of stand-by pump.
Wherein, the first oil stream instruction control unit 176SD and the second oil stream instruction control unit 175SD are connected, the second choosing
Select switching circuit B3 switching tertiary circuit B31 conducting, 9-10 contact；First choice switching circuit A2 switches second servo loop
A22 conducting, 5-6 contact.Second actuation coil 179JA excitation, the second cooling oil pump start and generate oil stream, the first oil stream
Indicate that control unit 176SD disconnects the first control loop A of locking；
When the second cooling oil pump failure, stop oil stream, the first oil stream indicates that control unit 176SD is connected, and first choice switches back into
Road A2 switches the first circuit A21 conducting, first time relay 173XK excitation, first time relay 173XK normal opened contact
173X is closed after of short duration delay, makes the first actuation coil 175JA excitation, and the first cooling oil pump starts and generates oil stream.First
After cooling oil pump starts and generates oil stream, the second oil stream indicates that control unit 175SD disconnects the second control loop B of locking.
Further, as shown in fig. 6, being the automatic control loop of forced-oil-air cooling of embodiment of the present invention Transformer Down Oil Pump
The electrical block diagram in fault trip circuit, fault trip circuit is to control forced-oil-air cooling transformer delay tripping.This reality
It applies the fault trip circuit in example and includes at least the first oil stream instruction control unit 176SD being connected in series, the instruction control of the second oil stream
The alarm of unit 175SD processed and one and delay tripping unit 175XK, in which: the first oil stream indicates that control unit 176SD's is normally closed
When junction closure, the second oil stream instruction control unit 175SD normally closed contact are also closure, alarm and delay tripping unit 175XK
Carry out alarm and/or delay tripping.
It is connect when it is implemented, the second oil stream instruction control unit 175SD and the first oil stream indicate that control unit 176SD is normally closed
Point series connection, takes two-way fuel pump outlet oil stream full cut-off logic, and triggering trip signal controls forced-oil-air cooling transformer delay tripping.
Main oil pump is made with the first cooling oil pump, the second cooling oil pump is done for stand-by pump: when cooling oil pump works normally, the
The outlet of one cooling oil pump has the second cooling oil pump of oil stream to export no oil stream, and the control unit 175SD of the second oil stream instruction at this time is disconnected
It opens.When the first cooling oil pump failure, the first cooling oil pump, which exports oil stream, to be stopped, and the second oil stream indicates that control unit 175SD is normal
Junction closure is closed, because the control unit 176SD normally closed contact of the first oil stream instruction at this time is also closure, triggering alarm and delay are jumped
Lock unit 175XK Instant alarming.
After a small time delay, oil pump automatic switching loop controls the starting of the second cooling oil pump, and the oil stream of generation makes the first oil
Stream instruction control unit 176SD is disconnected, therefore will not trigger 8 minutes delay trippings of the forced-oil-air cooling transformer.Alarm and delay
The Instant alarming of trip unit 175XK can continue to keep after completing oil pump switching, until hand-reset, to remind operation to tie up
Personnel are repaired to overhaul failure oil pump in time.When the first cooling oil pump and the second cooling oil pump simultaneous faults, two pump discharges
Without oil stream, the second oil stream instruction control unit 175SD and the first oil stream instruction control unit 176SD be all closed, triggering alarm and
Delay tripping unit 175XK is delayed 8 minutes and trips, and powers off forced-oil-air cooling transformer.
It is to be understood that alarm and delay tripping unit 175XK can be relay.Second cooling oil pump is decided oil
Pump, the first cooling oil pump do the wavy trajectory analogy above situation of stand-by pump, repeat no more.
The automatic control loop for implementing forced-oil-air cooling Transformer Down Oil Pump of the invention, has the following beneficial effects:
The first, pass through control first manual circuit, first choice switching circuit, the second manual loop, the second selection switching circuit
In at least primary Ioops on/off state, make forced-oil-air cooling Transformer Down Oil Pump in the first cooling of the first control loop
Oil pump generates to be switched between oil stream, the second cooling oil pump generation oil stream of the second control loop or tripping off-position, can
Forced oil-circulation air-cooled transformer is solved because cooling oil pump is without automatic switching function, when main oil pump failure can not switch to spare oil
Pump, the problem of causing transformer to lose cooling, and then transformer is caused to trip, increases the reliability and safety of system.
The second, the triggering logic that forced-oil-air cooling transformer loses cooling trip signal is improved, triggering trip signal is avoided
Logic is excessively single to lead to mistrip, promotes transformer safety and reliability.
Third, structure are simplified, easy construction, and adaptable and experiment is very convenient.
Claims (10)
1. a kind of automatic control loop of forced-oil-air cooling Transformer Down Oil Pump characterized by comprising
The first control loop equipped with the first cooling oil pump, first control loop include: that can manually control starting or pass
Stop the first manual circuit of first cooling oil pump and is connected to the first choice switching circuit of first cooling oil pump；Institute
It states first choice switching circuit to include at least: to control whether that the first oil stream for connecting the first choice switching circuit indicates
Control unit and the first circuit being connected in the first oil stream instruction control unit and second servo loop, and
The second control loop equipped with the second cooling oil pump, second control loop include: that can manually control starting or pass
Stop the second manual loop of second cooling oil pump and is connected to the second selection switching circuit of second cooling oil pump: institute
It states the second selection switching circuit to include at least: to control whether that the second oil stream for connecting the second selection switching circuit indicates
Control unit and the tertiary circuit being connected in the second oil stream instruction control unit and the 4th circuit；Wherein:
It is cut by control first manual circuit, the first choice switching circuit, second manual loop, second selection
The state for gaining in road at least primary Ioops on/off makes forced-oil-air cooling Transformer Down Oil Pump the of the first control loop
One cooling oil pump generates to be cut between oil stream, the second cooling oil pump generation oil stream of the second control loop or tripping off-position
It changes.
2. the automatic control loop of forced-oil-air cooling Transformer Down Oil Pump as described in claim 1, which is characterized in that
The first oil stream instruction control unit is connected with second oil stream instruction control unit, and the first choice switches back into
Road switches the first circuit conducting, and the second selection switching circuit switches the 4th circuit conducting, and described first is cooling
Pump start simultaneously generates oil stream, and the second oil stream instruction control unit, which disconnects, is latched second control loop.
3. the automatic control loop of forced-oil-air cooling Transformer Down Oil Pump as claimed in claim 2, which is characterized in that
When first cooling oil pump stops oil stream, the second oil stream instruction control unit is connected, the second selection switching
The conducting of tertiary circuit described in loop switch, second cooling oil pump start and generate oil stream, the first oil stream instruction control
Unit, which disconnects, is latched first control loop.
4. the automatic control loop of forced-oil-air cooling Transformer Down Oil Pump as described in any one of claims 1-3, feature exist
In equipped with to control the first time that first control loop is connected in first circuit and/or the second servo loop
Relay；
Be equipped in the tertiary circuit or the 4th circuit to control be connected the second time of second control loop after
Electric appliance.
5. the automatic control loop of forced-oil-air cooling Transformer Down Oil Pump as claimed in claim 4, which is characterized in that described
One control loop further includes the first actuation coil being connected respectively with first cooling oil pump and the first time relay；
Second control loop further includes to be connected respectively with second cooling oil pump and second time relay
Two actuation coils.
6. the automatic control loop of forced-oil-air cooling Transformer Down Oil Pump as claimed in claim 5, which is characterized in that described
Two selection switching circuits switch the tertiary circuit conducting, second time relay excitation, second time relay
Normal opened contact is closed after of short duration delay, makes the second actuation coil excitation, and second cooling oil pump starts and generates oil stream.
7. the automatic control loop of forced-oil-air cooling Transformer Down Oil Pump as claimed in claim 5, which is characterized in that
The first oil stream instruction control unit is connected with second oil stream instruction control unit, and second selection switches back into
Road switches the tertiary circuit conducting, and the first choice switching circuit switches the second servo loop conducting, and described second is cooling
Pump start simultaneously generates oil stream, and the first oil stream instruction control unit, which disconnects, is latched first control loop.
8. the automatic control loop of forced-oil-air cooling Transformer Down Oil Pump as claimed in claim 7, which is characterized in that
When second cooling oil pump stops oil stream, the first oil stream instruction control unit is connected, the first choice switching
The conducting of first circuit described in loop switch, first cooling oil pump start and generate oil stream, the second oil stream instruction control
Unit, which disconnects, is latched second control loop.
9. the automatic control loop of forced-oil-air cooling Transformer Down Oil Pump as claimed in claim 8, which is characterized in that described
One selection switching circuit switches the first circuit conducting, the first time relay excitation, the first time relay
Normal opened contact is closed after of short duration delay, makes the first actuation coil excitation, and first cooling oil pump starts and generates oil stream.
10. the automatic control loop of forced-oil-air cooling Transformer Down Oil Pump as described in claim 1, which is characterized in that also wrap
It includes:
To control the fault trip circuit of forced-oil-air cooling transformer delay tripping, the fault trip circuit includes at least and mutually goes here and there
First oil stream instruction control unit, second oil stream instruction control unit and the alarm of connection and delay tripping list
Member, in which:
Normally closed contact closure, second oil stream of the first oil stream instruction control unit indicate control unit normally closed contact
When to be closed, the alarm and delay tripping unit carry out alarm and/or delay tripping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811042071.2A CN109356833B (en) | 2018-09-07 | 2018-09-07 | Automatic control loop of forced oil air-cooled transformer cooling oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811042071.2A CN109356833B (en) | 2018-09-07 | 2018-09-07 | Automatic control loop of forced oil air-cooled transformer cooling oil pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109356833A true CN109356833A (en) | 2019-02-19 |
| CN109356833B CN109356833B (en) | 2020-07-21 |
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ID=65350436
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811042071.2A Active CN109356833B (en) | 2018-09-07 | 2018-09-07 | Automatic control loop of forced oil air-cooled transformer cooling oil pump |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1556193C (en) * | 1988-06-20 | 1995-02-09 | Акционерное общество "УРАЛТРАК" | Electric system for actuating device for heating internal combustion engine before starting |
| JP2002075693A (en) * | 2000-08-29 | 2002-03-15 | Nissin High Voltage Co Ltd | Load driving control equipment in high-voltage terminal of accelerator |
| CN202076074U (en) * | 2011-04-29 | 2011-12-14 | 程战斌 | Cooling system for forced oil circulation air-cooled oil immersion transformer |
| CN204536790U (en) * | 2015-05-04 | 2015-08-05 | 东北石油大学 | Cellar drainagepump automatic control circuit |
| CN204900217U (en) * | 2015-08-21 | 2015-12-23 | 珠海市航粤正泰成套电气设备有限公司 | Blowdown pump control circuit |
-
2018
- 2018-09-07 CN CN201811042071.2A patent/CN109356833B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1556193C (en) * | 1988-06-20 | 1995-02-09 | Акционерное общество "УРАЛТРАК" | Electric system for actuating device for heating internal combustion engine before starting |
| JP2002075693A (en) * | 2000-08-29 | 2002-03-15 | Nissin High Voltage Co Ltd | Load driving control equipment in high-voltage terminal of accelerator |
| CN202076074U (en) * | 2011-04-29 | 2011-12-14 | 程战斌 | Cooling system for forced oil circulation air-cooled oil immersion transformer |
| CN204536790U (en) * | 2015-05-04 | 2015-08-05 | 东北石油大学 | Cellar drainagepump automatic control circuit |
| CN204900217U (en) * | 2015-08-21 | 2015-12-23 | 珠海市航粤正泰成套电气设备有限公司 | Blowdown pump control circuit |
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| Publication number | Publication date |
|---|---|
| CN109356833B (en) | 2020-07-21 |
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