CN201322856Y - Manually automatic switching non-halt control circuit for pumping motor of blower unit - Google Patents
Manually automatic switching non-halt control circuit for pumping motor of blower unit Download PDFInfo
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- CN201322856Y CN201322856Y CNU2008202285265U CN200820228526U CN201322856Y CN 201322856 Y CN201322856 Y CN 201322856Y CN U2008202285265 U CNU2008202285265 U CN U2008202285265U CN 200820228526 U CN200820228526 U CN 200820228526U CN 201322856 Y CN201322856 Y CN 201322856Y
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Abstract
The utility model discloses a manually automatic switching non-halt control circuit for a pumping motor of a blower unit, which comprises a main circuit and a control circuit. The main circuit comprises a low-voltage circuit breaker connected with a three-phase power source; an AC contactor is connected with the output terminal of the low-voltage circuit breaker; a thermal relay is connected with the output terminal of the AC contactor; and the output terminal of the thermal relay is connected with the pumping motor. The control circuit comprises a control circuit breaker connected at the output terminal of the low-voltage circuit breaker, and three branch circuits are connected with the output terminal of the control circuit breaker. The control circuit has the effect that when the pumping motor selects between the on-site manual operation and the automatic operation through an industrial control system by a transfer switch, the power supply of the control circuit of the pumping motor can not be switched off and the pumping motor does not halt, and has the function of pretreating the on-site fault of the pumping motor on the site. Site experiments show that the control circuit has good effect.
Description
Technical field
The utility model belongs to the fan blower field, relates to a kind of control circuit, and especially a kind of hand of blower unit pump class motor automaticallyes switch and selects not shutdown control circuit.
Background technology
In the low pressure auxiliary system of blower unit; pump class motor; especially lube oil pump, power oil pump are a very important equipment; it mainly acts on is exactly when blower unit is moved; for unit provides lubricating oil to guarantee shaft system of unit cooling or provides power oil to guarantee the hydraulic system device security action message that some are important, thereby guarantee unit safety operation.As long as any in power oil or the lubricating oil system goes wrong, all may cause compressor emergency shutdown, production is caused heavy losses.And all be to adopt on-site manual and master-control room industrial control system two kinds of operator schemes of control automatically for the control of blower unit pump class subsidiary engine at present, operation is selected to be finished by switch.
Because there is mechanical breakpoint in switch in the transfer process of selecting execute-in-place and industrial control system to operate automatically; therefore; general control circuit all can cause the control loop outage owing to the mechanical breakpoint of switch when the hand automatic mode is selected conversion; thereby cause pump class motor to be shut down, and then cause fan blower to be shut down because of the shutdown of lubricating oil pump motor or power oil pump motor.
Therefore, general producer all stipulates in working specification, " use when manually control is only for field adjustable or maintenance, use when being controlled at normal running automatically ".But this does not stop to cause because of on-the-spot malfunction selector switch the possibility of maloperation shutdown.And if the personnel that patrol and examine find when patrolling at the scene that there is the possibility of disorderly closedown in the pump class motor that is moving, the personnel of patrolling and examining think pre-service at the scene, avoid force outage can't accomplish at all.Though because there is control box at the scene, switch also is installed in the scene, because the restriction of control circuit, switch is not allow on-the-spot the switching.Artificially with switch at the scene directly by pulling automatically manually, promptly can make the linkage relationship that destroys instrument control internal system, can make the control loop outage of pump class motor again, cause that pump class motor shuts down.
And pulpit distance field distant (generally about 100 meters).Return the pulpit after if pinpoint the problems Deng the personnel of patrolling and examining on industrial control system during the operational processes fault, fault has taken place mostly already, and the time of first handling failure just has been wasted.
Summary of the invention
The purpose of this utility model is; provide a kind of hand automatic switchover of blower unit pump class motor to select not shutdown control circuit; to solve control circuit when the hand automatic mode is changed; pump class motor control loop is owing to the switch breakpoint causes the control loop outage; pump class motor is shut down; and then the stopping accident of initiation unit, the function of realization pump class motor field failure on-site pretreatment.
For realizing above-mentioned task, the utility model is taked following technical solution:
A kind of hand of blower unit pump class motor automaticallyes switch and selects not shutdown control circuit, comprises major loop and control loop, it is characterized in that:
Described major loop includes a low-voltage circuit breaker that is connected with three-phase supply, is connected with A.C. contactor at the output terminal of low-voltage circuit breaker, and the output terminal of A.C. contactor is connected with electrothermal relay, and the output terminal of electrothermal relay is connected with pump class motor;
Described control loop comprises the control loop isolating switch that is connected the low-voltage circuit breaker output terminal, connects three branch roads on the output terminal of control loop isolating switch:
First branch road is a stop button, the remote control of industrial control system remote control output stops normally closed contact, switch, the remote start(ing) signal normally opened contact of industrial control system output, start button, the branch road that the coil of A.C. contactor and electrothermal relay constitute, wherein, stop button stops normally closed contact with the remote control of industrial control system remote control output and connects, the coil of A.C. contactor and electrothermal relay series connection, the output terminal that the remote control of industrial control system output stops normally closed contact connecting the first input end and second input end of switch respectively, first output terminal of switch is connected with start button, second output terminal connects the remote start(ing) signal normally opened contact of industrial control system output, and the output terminal of start button is connected with the coil input end of A.C. contactor; The remote control stop signal normally closed contact of industrial control system remote control output and remote start(ing) signal normally opened contact are all with the pulse signal of time-delay in 1 second; First often leaves the input end that auxiliary contact one terminates at switch A.C. contactor, and the other end is connected the input end of the coil of A.C. contactor;
Second series arm of often opening auxiliary contact and run indicator formation of second route A.C. contactor;
It is first normally closed auxiliary contact of A.C. contactor and the series arm that the stoppage in transit pilot lamp constitutes that Third Road props up;
First branch road, second branch road, the 3rd branch road are parallel with one another, wherein, and the auxiliary normally closed contact output terminal of electrothermal relay, run indicator one end and stoppage in transit pilot lamp one end ground connection in parallel.
The hand of blower unit pump class motor of the present utility model automaticallyes switch and selects not shutdown control circuit; have when the hand automatic mode is changed; pump class motor control loop does not cut off the power supply; pump class motor is not shut down; and at pump class motor scene to the pretreated function of fault; through a plurality of on-site verifications, obtained very desirable effect.
Description of drawings
Fig. 1 is an electrical schematic diagram of the present utility model;
Fig. 2 is a casing front schematic view of the present utility model;
Fig. 3 is the distribution schematic diagrams of components and parts at casing.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Embodiment
Referring to Fig. 1, according to the technical solution of the utility model, blower unit pump class motor hand of the present utility model automaticallyes switch and selects not shutdown control circuit, comprises major loop and control loop.
The device of forming major loop comprises that the output terminal of a low-voltage circuit breaker 2 that is connected with three-phase supply 1, A.C. contactor 3, A.C. contactor 3 is connected with electrothermal relay 4.
The device of forming control loop comprise the remote control stop signal normally closed contact 8 (pulse signal of time-delay in 1 second) of control loop isolating switch 6, stop button 7, industrial control system output, operating selection switch 9, start button 10, industrial control system output remote start(ing) signal normally opened contact 11 (pulse signal of time-delay in 1 second), run indicator 12, stop pilot lamp 13 and form.Low-voltage circuit breaker 2, A.C. contactor 3, electrothermal relay 4, control loop isolating switch 6, stop button 7, operating selection switch 9, start button 10, run indicator 12, stop pilot lamp 13 and be installed in the casing, wherein, stop button 7, operating selection switch 9, start button 10, run indicator 12, stop on the panel that pilot lamp 13 is installed in casing, low-voltage circuit breaker 2, A.C. contactor 3, electrothermal relay 4 and control loop isolating switch 6 in the distribution of casing referring to Fig. 3.
Three-phase power output end 1 is connected with low-voltage circuit breaker 2 input ends, and low-voltage circuit breaker 2 output terminals are connected with A.C. contactor 3 input ends, and A.C. contactor 3 output terminals are connected with electrothermal relay 4 input ends, and the output terminal of electrothermal relay 4 links to each other with pump class motor 5;
Control loop comprises the control loop isolating switch 6 that is connected low-voltage circuit breaker 2 output terminals, connects three branch roads on the output terminal of control loop isolating switch 6:
First branch road is a stop button 7, the remote control of industrial control system remote control output stops normally closed contact 8, switch 9, the remote start(ing) signal normally opened contact 11 of industrial control system output, start button 10, the branch road that the coil of A.C. contactor 3 and electrothermal relay 4 constitute, wherein, stop button 7 is connected with the remote control stop signal normally closed contact 8 of industrial control system remote control output, the coil of A.C. contactor 3 and electrothermal relay 4 series connection, the output terminal of the remote control stop signal normally closed contact 8 of industrial control system output connects the first input end and second input end of switch 9 respectively, first output terminal of switch 9 is connected with start button 10, second output terminal connects the remote start(ing) signal normally opened contact 11 of industrial control system output, and the output terminal of start button 10 is connected with the coil input end of A.C. contactor 3; First often leaves the input end that auxiliary contact one terminates at switch 9 A.C. contactor 3, and the other end is connected the input end of the coil of A.C. contactor 3;
Second series arm of often opening auxiliary contact and run indicator 12 formations of second route A.C. contactor 3;
It is first normally closed auxiliary contact of A.C. contactor 3 and the series arm that stoppage in transit pilot lamp 13 constitutes that Third Road props up;
First branch road, second branch road, the 3rd branch road are parallel with one another, wherein, and an end of the auxiliary normally closed contact output terminal of electrothermal relay 4, an end of run indicator 12 and stoppage in transit pilot lamp 13 ground connection in parallel.
Concrete annexation is: the output terminal of control loop isolating switch 6 is often opened auxiliary contact with the input end of stop button 7 and A.C. contactor 3 second respectively, first normally closed auxiliary contact input end is connected, often open the auxiliary contact output terminal for second of A.C. contactor 3 and link to each other with the input end of run indicator 12, the normally closed auxiliary contact output terminal of first of A.C. contactor 3 links to each other with the input end of stoppage in transit pilot lamp 13; The remote control stop signal normally closed contact 8 of the output terminal of stop button 7 and industrial control system output (pulse signal of time-delay in 1 second) input end links to each other, and first often opens the auxiliary contact input end and links to each other the remote control stop signal normally closed contact 8 of industrial control system output (pulse signal of delaying time in 1 second) output terminal with first, second input end of switch 9 and A.C. contactor 3 respectively; First output terminal of switch 9 links to each other with the input end of start button 10, and second output terminal of switch 9 links to each other with remote start(ing) signal normally opened contact 11 (pulse signal of time-delay in the 1 second) input end of industrial control system output; First often opens the auxiliary contact output terminal and links to each other the input end of A.C. contactor 3 coils with remote start(ing) normally opened contact 11 (pulse signal of time-delay in the 1 second) output terminal of the output terminal of start button 10, industrial control system output and A.C. contactor 3 respectively; The output terminal of A.C. contactor 3 coils links to each other with the auxiliary normally closed contact input end of electrothermal relay 4, and the auxiliary normally closed contact output terminal of electrothermal relay 4 is connected with power supply 1 ground wire, run indicator 12 and the output terminal of stoppage in transit pilot lamp 13 respectively.
Low-voltage circuit breaker 2, A.C. contactor 3, electrothermal relay 4, control loop isolating switch 6 are installed in the casing; " stop " button 7, switch 9, start button 10, run indicator 12, stoppage in transit pilot lamp 13 and be installed on the front panel, and the load dispatcher lock.The switching value remote control output signal that the signal (pulse signal of time-delay in 1 second) of remote control stop signal normally closed contact 8 (pulse signal of time-delay in 1 second) and remote start(ing) signal normally opened contact 11 all comes industrial control system.
Principle of work of the present utility model is as follows:
Power supply 1 is made of A phase, B phase, C phase, zero line N for exchanging three-phase four-wire system power supply (50HZ, 380V).Earlier power supply 1 is sent into this control box, the low-voltage circuit breaker 2 that manually closes then, then main circuit power connection, the control loop isolating switch 6 that manually closes, control loop power connection is then checked and is adjusted low-tension motor institute driven equipment.If no any problem then can be carried out the starting/shut-down operation of pump class motor.
When selector switch 9 being placed manual operation state following time, press start button 10, it is electric that A.C. contactor 3 coils are got, A.C. contactor 3 electric back main contact closure to make that the major loop of pump class motor 5 gets electric, 5 runnings of pump class motor.Meanwhile, the connection of the closed retentive control ring current of the auxiliary normal opened contact of first of A.C. contactor 3, second the closed output of auxiliary normal opened contact run signal is to run indicator 12, and run indicator 12 is lighted.
If need to shut down, then press stop button 7, make A.C. contactor 3 coil losing electricities, the main contact of A.C. contactor 3 disconnect the power supply that primary power 1 is given low pump class motor 5 immediately, low-tension motor 5 is out of service.Meanwhile, the auxiliary normal opened contact of first of A.C. contactor 3 disconnects the connection of control loop power supply, and first auxiliary normal opened contact disconnects the run signal of output, and run indicator 12 is extinguished; The auxiliary normally closed contact closure of A.C. contactor 3, stoppage in transit pilot lamp 13 is lighted.
When selector switch 9 is placed the automatic mode of operation of industrial control system, industrial control system sends the remote start(ing) signal and sends into remote start(ing) signal normally opened contact 11 (pulse signal of 1S time-delay), A.C. contactor 3 coils are got, A.C. contactor 3 electric back main contact closure to make that the motor major loop gets electric, motor operation.Meanwhile, the connection of the closed retentive control ring current of the auxiliary normal opened contact of first of A.C. contactor 3, second the closed output of auxiliary normal opened contact run signal is to run indicator 12, and run indicator 12 is lighted.
Shut down if need; industrial control system sends the remote control stop signal; deliver to the remote control stop signal normally closed contact 8 (pulse signal of 1S time-delay) of industrial control system remote control output; make A.C. contactor 3 coil losing electricities; the main contact of A.C. contactor 3 disconnects the power supply that primary power 1 is given pump class motor 5 immediately, and low-tension motor 5 is out of service.Meanwhile, the auxiliary normal opened contact of first of A.C. contactor 3 disconnects the connection of control loop power supply, and first auxiliary normal opened contact disconnects the run signal of output, and run indicator 12 is extinguished; The auxiliary normally closed contact closure of A.C. contactor 3, stoppage in transit pilot lamp 13 is lighted.
The hand of blower unit pump class motor of the present utility model automaticallyes switch and selects not shutdown control circuit; can prevent effectively that selector switch is when selecting execute-in-place or industrial control system to operate automatically; the pump class motor stopping accident that causes has guaranteed that reaching synchronously of site examining and repairing and equipment safety operation is compatible.Through a plurality of on-site verifications, obtained very desirable effect.
Claims (1)
1, not shutdown control circuit is selected in the automatic switchover of a kind of hand of blower unit pump class motor, comprises major loop and control loop, it is characterized in that:
Described major loop includes a low-voltage circuit breaker (2) that is connected with three-phase supply (1), output terminal at low-voltage circuit breaker (2) is connected with A.C. contactor (3), the output terminal of A.C. contactor (3) is connected with electrothermal relay (4), and the output terminal of electrothermal relay (4) is connected with pump class motor (5);
Described control loop comprises the control loop isolating switch (6) that is connected low-voltage circuit breaker (2) output terminal, connects three branch roads on the output terminal of control loop isolating switch (6):
First branch road is stop button (7), the remote control stop signal normally closed contact (8) of industrial control system remote control output, switch (9), the remote start(ing) signal normally opened contact (11) of industrial control system output, start button (10), the branch road that the coil of A.C. contactor (3) and electrothermal relay (4) constitute, wherein, stop button (7) stops normally closed contact (8) with the remote control of industrial control system remote control output and connects, the coil of A.C. contactor (3) and electrothermal relay (4) series connection, the output terminal that the remote control of industrial control system output stops normally closed contact (8) connects the first input end of switch (9) respectively, second input end, first output terminal of switch (9) is connected with start button (10), second output terminal connects the remote start(ing) normally opened contact (11) of industrial control system output, and the output terminal of start button (10) is connected with the coil input end of A.C. contactor (3); The remote control of industrial control system remote control output stops normally closed contact (8) and remote start(ing) signal normally opened contact (11) all with the pulse signal of delaying time in 1 second; First often leaves the input end that auxiliary contact one terminates at switch (9) A.C. contactor (3), and the other end is connected the input end of the coil of A.C. contactor (3);
Second series arm of often opening auxiliary contact and run indicator (12) formation of second route A.C. contactor (3);
It is first normally closed auxiliary contact of A.C. contactor (3) and the series arm that stoppage in transit pilot lamp (13) constitutes that Third Road props up;
First branch road, second branch road, the 3rd branch road are parallel with one another, wherein, and the auxiliary normally closed contact output terminal of electrothermal relay (4), run indicator (12) one ends and stoppage in transit pilot lamp (13) one ends ground connection in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202285265U CN201322856Y (en) | 2008-12-29 | 2008-12-29 | Manually automatic switching non-halt control circuit for pumping motor of blower unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202285265U CN201322856Y (en) | 2008-12-29 | 2008-12-29 | Manually automatic switching non-halt control circuit for pumping motor of blower unit |
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| Publication Number | Publication Date |
|---|---|
| CN201322856Y true CN201322856Y (en) | 2009-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202285265U Expired - Fee Related CN201322856Y (en) | 2008-12-29 | 2008-12-29 | Manually automatic switching non-halt control circuit for pumping motor of blower unit |
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|---|---|
| CN (1) | CN201322856Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975660A (en) * | 2010-09-01 | 2011-02-16 | 南通大学 | Control device for bearing ball contact fatigue testing machine and control method thereof |
| CN102635542A (en) * | 2012-04-13 | 2012-08-15 | 中冶南方工程技术有限公司 | Undisturbed switching water pump control system |
| CN102635543A (en) * | 2012-04-13 | 2012-08-15 | 中冶南方工程技术有限公司 | Non-disturbance switching water pump control method |
| CN102916624A (en) * | 2012-10-24 | 2013-02-06 | 四川省电力公司达州电业局 | Motor start and stop control device |
| CN102916628A (en) * | 2012-10-24 | 2013-02-06 | 四川省电力公司达州电业局 | Motor control device |
| CN103352835A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Water pumping control circuit with remote control function |
| CN103607140A (en) * | 2013-11-20 | 2014-02-26 | 桂林机床电器有限公司 | Motor control apparatus |
| CN107947678A (en) * | 2017-10-30 | 2018-04-20 | 华润电力（贺州）有限公司 | A kind of variable-frequency motor transforms circuit |
| CN110950393A (en) * | 2019-12-31 | 2020-04-03 | 清水源（上海）环保科技有限公司 | Integration sewage treatment device automatic control device |
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2008
- 2008-12-29 CN CNU2008202285265U patent/CN201322856Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975660A (en) * | 2010-09-01 | 2011-02-16 | 南通大学 | Control device for bearing ball contact fatigue testing machine and control method thereof |
| CN101975660B (en) * | 2010-09-01 | 2015-10-21 | 南通大学 | The control device of bearing ball contact fatigue testing machine and control method thereof |
| CN102635542A (en) * | 2012-04-13 | 2012-08-15 | 中冶南方工程技术有限公司 | Undisturbed switching water pump control system |
| CN102635543A (en) * | 2012-04-13 | 2012-08-15 | 中冶南方工程技术有限公司 | Non-disturbance switching water pump control method |
| CN102635542B (en) * | 2012-04-13 | 2015-09-30 | 中冶南方工程技术有限公司 | No-harass switch control system of water pump |
| CN102635543B (en) * | 2012-04-13 | 2015-11-04 | 中冶南方工程技术有限公司 | No-harass switch water pump control method |
| CN102916624A (en) * | 2012-10-24 | 2013-02-06 | 四川省电力公司达州电业局 | Motor start and stop control device |
| CN102916628A (en) * | 2012-10-24 | 2013-02-06 | 四川省电力公司达州电业局 | Motor control device |
| CN103352835A (en) * | 2013-06-19 | 2013-10-16 | 国家电网公司 | Water pumping control circuit with remote control function |
| CN103607140A (en) * | 2013-11-20 | 2014-02-26 | 桂林机床电器有限公司 | Motor control apparatus |
| CN107947678A (en) * | 2017-10-30 | 2018-04-20 | 华润电力（贺州）有限公司 | A kind of variable-frequency motor transforms circuit |
| CN110950393A (en) * | 2019-12-31 | 2020-04-03 | 清水源（上海）环保科技有限公司 | Integration sewage treatment device automatic control device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091007 Termination date: 20111229 |