CN201557068U - Control device of electromotor lift-up oil pump for fan - Google Patents
Control device of electromotor lift-up oil pump for fan Download PDFInfo
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- CN201557068U CN201557068U CN200920034529XU CN200920034529U CN201557068U CN 201557068 U CN201557068 U CN 201557068U CN 200920034529X U CN200920034529X U CN 200920034529XU CN 200920034529 U CN200920034529 U CN 200920034529U CN 201557068 U CN201557068 U CN 201557068U
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Abstract
A control device of an electromotor lift-up oil pump for a fan comprises a control device body 37, wherein a control device body 37 is provided with a main loop 1 and a control loop 2, wherein the main loop 1 comprises a low voltage circuit breaker 4 connected with a three-phase power supply 3, an output end of the low voltage circuit breaker 4 is connected with two branches, the control loop 2 comprises a control loop circuit breaker 11 which is connected at the output end of the low voltage circuit breaker 4, five branches are connected at the output end of the control loop circuit breaker 11, the power supply is sent into the control circuit, the low voltage circuit breaker 4 is manually closed, the main loop power supply is switched on, the control loop circuit breaker 11 is manually closed, the control loop power supply is switched on, the starting or stopping operation of the lift-up oil pump motor can be carried out, and the oil pump is characterized that the main motor shafting safety can be protected.
Description
Technical field
The utility model relates to a kind of control device of oil pump, particularly a kind of blower fan control device of motor jacking oil pump.
Background technology
In the low pressure auxiliary system of blower fan; the jacking oil pump is a very important equipment; its main effect is exactly before fan starting or after shutting down; for the axle system of unit provides high pressure jacking oil; thereby guarantee that the axle with unit is a jack-up; between axle system and bearing, set up oil film, make lighter, the safety of the startup of unit and jiggering.And the effect of motor (hereinafter referred to as main motor) jacking oil pump also is this reason.
For 30MW and the main motor of above blower fan; electrical machinery plant generally all is furnished with the jacking oil pump of two jacking macro-axis; be distributed in two axle heads of main motor respectively; be used for the jacking motor rotor before main motor starts or during shutdown; prevent owing to lack oil film direct mechanical friction between main rotor and the bearing and main motor shaft system or bearing are caused a devastating effect.
At present, industrial controlling Design for motor jacking oil pump is the separate unit oil pump and controls separately, two table oil pump independence start-stops.This control idea lack the main motor separate unit of comprehensive consideration jacking oil pump rise respectively/stop and any overload trip after, the imbalance of jacking oil pressure causes the lever destruction of unidirectional jacking to main motor macro-axis and tooth case, influence the useful life of main rotor macro-axis and tooth case and the dynamic balance performance of unit, the long-term safety of unit is moved brought threat.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art; the purpose of this utility model is to provide the control device of a kind of blower fan with motor jacking oil pump; with two jacking pump starts solving main motor or stop asynchronous problem; have prevent main motor separate unit jacking oil pump rise respectively/stop and any overload trip after the lever destruction of oil pressure unidirectional jacking that main motor macro-axis and tooth case are caused; avoiding main motor shaft is the damage of the asymmetric jacking oil pressure on both sides to damaging property of main motor shaft system, the characteristics of protection main motor shaft system safety.
For achieving the above object, the technical scheme that the utility model is taked is: a kind of blower fan includes control device body 37 with the control device of motor jacking oil pump, and control device body 37 is provided with major loop 1 and control loop 2, it is characterized in that:
Described major loop 1 includes a low-voltage circuit breaker 4 that is connected with three phase mains 3, the output of low-voltage circuit breaker 4 is connected with two branch roads: first branch road includes A.C. contactor 5, the output of A.C. contactor 5 is connected with thermal relay 7, and the output of thermal relay 7 is connected with motor 9; Second branch road includes A.C. contactor 6, and the output of A.C. contactor 6 is connected with thermal relay 8, and the output of thermal relay 8 is connected with motor 10;
Described control loop 2 comprises the control loop circuit breaker 11 that is connected low-voltage circuit breaker 4 outputs, connect five branch roads on the output of control loop circuit breaker 11: first branch road is: first output 13 of operating selection switch 12 links to each other with the input of stop button 15, the output of stop button 15 links to each other with the input of start button 16 and first input of often opening auxiliary contact 21 of 1# Oil pump electrical machinery 9 usefulness A.C. contactors 5 respectively, and first of 1# Oil pump electrical machinery 9 usefulness A.C. contactors 5 are often opened auxiliary contact 21 outputs and often opened auxiliary contact 22 inputs with first of 2# Oil pump electrical machinery 10 usefulness A.C. contactors 6 and link to each other; Second output 14 of operating selection switch 12 is connected with the input of the stop signal normally-closed contact 23 of industrial control system remote control output, the output of the stop signal normally-closed contact 23 of industrial control system remote control output links to each other with the input of the initiating signal normally opened contact 24 of industrial control system remote control output and second input of often opening auxiliary contact 25 of 1# Oil pump electrical machinery 9 usefulness A.C. contactors 5 respectively, and second of 1# Oil pump electrical machinery 9 usefulness A.C. contactors 5 are often opened auxiliary contact 25 outputs and often opened auxiliary contact 26 inputs with second of 2# Oil pump electrical machinery 10 usefulness A.C. contactors 6 and link to each other; The output of start button 16 is often opened the output of auxiliary contact 22 respectively with first of 2# Oil pump electrical machinery 10 usefulness A.C. contactors 6, the output of the initiating signal normally opened contact 24 of industrial control system remote control output, second output of often opening auxiliary contact 26 of 2# Oil pump electrical machinery 10 usefulness A.C. contactors 6 is in parallel, and then connect with the input of the coil 18 of the coil 17 of 1# Oil pump electrical machinery 9 usefulness A.C. contactors 5 and 2# Oil pump electrical machinery 10 usefulness A.C. contactors 6 respectively, connect the input series connection of the normally closed contact 20 of the output of the normally closed contact 19 of 1# Oil pump electrical machinery 9 usefulness thermal relays 7 and 2# Oil pump electrical machinery 10 usefulness thermal relays 8 after the output parallel connection of the coil 18 of the coil 17 of 1# Oil pump electrical machinery 9 usefulness A.C. contactors 5 and 2# Oil pump electrical machinery 10 usefulness A.C. contactors 6 again with normally closed contact 19 inputs of 1# Oil pump electrical machinery 9 usefulness thermal relays 7;
Second branch road is: the 3rd series arm of often opening auxiliary contact 27 and run indicator 28 formations of 1# Oil pump electrical machinery 9 usefulness A.C. contactors 5;
Third Road props up and is: the series arm that first normally closed auxiliary contact 29 of 1# Oil pump electrical machinery 9 usefulness A.C. contactors 5 and stoppage in transit indicator light 30 constitute;
The 4th branch road is: the 3rd series arm of often opening auxiliary contact 31 and run indicator 32 formations of 2# Oil pump electrical machinery 10 usefulness A.C. contactors 6;
The five the tunnel props up and is: the series arm that first normally closed auxiliary contact 33 of 2# Oil pump electrical machinery 10 usefulness A.C. contactors and stoppage in transit indicator light 34 constitute;
First branch road, second branch road, the 3rd branch road, the 4th branch road, the 5th branch road are parallel with one another, wherein, an end of the output of the normally closed contact 20 of 2# Oil pump electrical machinery 10 usefulness thermal relays 8, run indicator 15 1 ends, stoppage in transit indicator light 16 1 ends, run indicator 17 1 ends and stoppage in transit indicator light 18 ground connection in parallel.
The utility model is owing to adopted the thinking of system design, and having fully taken into account main motor jacking oil circuit balance is the significance of safe operation to motor shaft, so have practical characteristics; Because electric control loop has adopted two jacking Oil pump electrical machineries chain, the structural design that rises simultaneously/stop is so have the advantages that two motor synchronous rise/stop.Therefore, the utlity model has prevent main motor separate unit jacking oil pump rise respectively/stop and any overload trip after the lever destruction of oil pressure unidirectional jacking that main motor macro-axis and tooth case are caused, realized that the protection main motor shaft is a purpose of safety.
Description of drawings
Accompanying drawing is an electrical principle schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Referring to accompanying drawing, a kind of control device of fan electromotor jacking oil pump includes control device body 37, and control device body 37 is provided with major loop 1 and control loop 2, it is characterized in that:
Described major loop 1 includes a low-voltage circuit breaker 4 that is connected with three phase mains 3, the output of low-voltage circuit breaker 4 is connected with two branch roads: first branch road includes A.C. contactor 5, the output of A.C. contactor 5 is connected with thermal relay 7, and the output of thermal relay 7 is connected with motor 9; Second branch road includes A.C. contactor 6, and the output of A.C. contactor 6 is connected with thermal relay 8, and the output of thermal relay 8 is connected with motor 10;
Described control loop 2 comprises the control loop circuit breaker 11 that is connected low-voltage circuit breaker 4 outputs, connect five branch roads on the output of control loop circuit breaker 11: first branch road is: first output 13 of operating selection switch 12 links to each other with the input of stop button 15, the output of stop button 15 links to each other with the input of start button 16 and first input of often opening auxiliary contact 21 of 1# Oil pump electrical machinery 9 usefulness A.C. contactors 5 respectively, and first of 1# Oil pump electrical machinery 9 usefulness A.C. contactors 5 are often opened auxiliary contact 21 outputs and often opened auxiliary contact 22 inputs with first of 2# Oil pump electrical machinery 10 usefulness A.C. contactors 6 and link to each other; Second output 14 of operating selection switch 12 is connected with the input of the stop signal normally-closed contact 23 of industrial control system remote control output, the output of the stop signal normally-closed contact 23 of industrial control system remote control output links to each other with the input of the initiating signal normally opened contact 24 of industrial control system remote control output and second input of often opening auxiliary contact 25 of 1# Oil pump electrical machinery 9 usefulness A.C. contactors 5 respectively, and second of 1# Oil pump electrical machinery 9 usefulness A.C. contactors 5 are often opened auxiliary contact 25 outputs and often opened auxiliary contact 26 inputs with second of 2# Oil pump electrical machinery 10 usefulness A.C. contactors 6 and link to each other; The output of start button 16 is often opened the output of auxiliary contact 22 respectively with first of 2# Oil pump electrical machinery 10 usefulness A.C. contactors 6, the output of the initiating signal normally opened contact 24 of industrial control system remote control output, second output of often opening auxiliary contact 26 of 2# Oil pump electrical machinery 10 usefulness A.C. contactors 6 is in parallel, and then connect with the input of the coil 18 of the coil 17 of 1# Oil pump electrical machinery 9 usefulness A.C. contactors 5 and 2# Oil pump electrical machinery 10 usefulness A.C. contactors 6 respectively, connect the input series connection of the normally closed contact 20 of the output of the normally closed contact 19 of 1# Oil pump electrical machinery 9 usefulness thermal relays 7 and 2# Oil pump electrical machinery 10 usefulness thermal relays 8 after the output parallel connection of the coil 18 of the coil 17 of 1# Oil pump electrical machinery 9 usefulness A.C. contactors 5 and 2# Oil pump electrical machinery 10 usefulness A.C. contactors 6 again with normally closed contact 19 inputs of 1# Oil pump electrical machinery 9 usefulness thermal relays 7;
Second branch road is: the 3rd series arm of often opening auxiliary contact 27 and run indicator 28 formations of 1# Oil pump electrical machinery 9 usefulness A.C. contactors 5;
Third Road props up and is: the series arm that first normally closed auxiliary contact 29 of 1# Oil pump electrical machinery 9 usefulness A.C. contactors 5 and stoppage in transit indicator light 30 constitute;
The 4th branch road is: the 3rd series arm of often opening auxiliary contact 31 and run indicator 32 formations of 2# Oil pump electrical machinery 10 usefulness A.C. contactors 6;
The five the tunnel props up and is: the series arm that first normally closed auxiliary contact 33 of 2# Oil pump electrical machinery 10 usefulness A.C. contactors and stoppage in transit indicator light 34 constitute;
First branch road, second branch road, the 3rd branch road, the 4th branch road, the 5th branch road are parallel with one another, wherein, an end of the output of the normally closed contact 20 of 2# Oil pump electrical machinery 10 usefulness thermal relays 8, run indicator 15 1 ends, stoppage in transit indicator light 16 1 ends, run indicator 17 1 ends and stoppage in transit indicator light 18 ground connection in parallel.
Operation principle of the present utility model is as follows:
Power supply is sent into this control circuit, the low-voltage circuit breaker 4 that manually closes, then main circuit power is connected, the control loop circuit breaker 11 that manually closes, control loop power connection is then checked and is adjusted motor jacking oil system.If no any problem can be carried out the starting/shut-down operation of jacking Oil pump electrical machinery.
When first output, 13 closures with operating selection switch 12, place manual operation state following time, if needed pump, press starting button 16, the coil 18 that makes the coil 17 of A.C. contactor 5 and A.C. contactor 6 simultaneously, the coil of A.C. contactor 5 and A.C. contactor 6 gets the corresponding main contact 35 in electric back and main contact 36 is closed simultaneously, the major loop that makes 1# Oil pump electrical machinery 9 and 2# Oil pump electrical machinery 10 simultaneously electric, and starting operation.Meanwhile, the connection of closed retentive control ring current simultaneously of the auxiliary normal opened contact 22 of first of the auxiliary normal opened contact 21 of first of A.C. contactor 5, A.C. contactor 6, the 3rd auxiliary normal opened contact 27 closures of A.C. contactor 5, run indicator 28 is lighted; The auxiliary normally closed contact 29 of first of A.C. contactor 5 disconnects, and stoppage in transit indicator light 30 extinguishes; The 3rd auxiliary normal opened contact 31 closures of A.C. contactor 6, run indicator 32 is lighted; The auxiliary normally closed contact 33 of first of A.C. contactor 6 disconnects, and stoppage in transit indicator light 34 extinguishes.
Shut down if need; then press stop button 15; make 18 while of the coil dead electricity of the coil 17 and the A.C. contactor 6 of A.C. contactor 5; make the main contact 35 and the main contact 36 of A.C. contactor 5 and A.C. contactor 6 correspondences disconnect simultaneously; disconnect main power source 1, make 1# Oil pump electrical machinery 9 and 2# Oil pump electrical machinery 10 stop simultaneously.Meanwhile, first auxiliary normal opened contact 22 of auxiliary normal opened contact 21 of first of A.C. contactor 5 and A.C. contactor 6 disconnects simultaneously, the control loop power cut-off, and the 3rd auxiliary normal opened contact 27 of A.C. contactor 5 disconnects, and run indicator 28 is extinguished; Auxiliary normally closed contact 29 closures of first of A.C. contactor 5, stoppage in transit indicator light 30 is lighted; The 3rd auxiliary normal opened contact 31 of A.C. contactor 6 disconnects, and run indicator 32 is extinguished; Auxiliary normally closed contact 33 closures of first of A.C. contactor 6, stoppage in transit indicator light 34 is lighted.
When second output, 14 closures with selector switch 12, when placing automatic mode of operation, if needed pump, send starting command (pulse signal of delaying time 1 second) by operating personnel by industrial control system, initiating signal normally opened contact 24 closures of industrial control system remote control output, the coil 18 that makes the coil 17 of A.C. contactor 5 and A.C. contactor 6 simultaneously, the coil of A.C. contactor 5 and A.C. contactor 6 gets corresponding main contact 35 in electric back and 36 while of main contact closure, the major loop that makes 1# Oil pump electrical machinery 9 and 2# Oil pump electrical machinery 10 simultaneously electric, and starting operation.Meanwhile, second auxiliary normal opened contact 26 connection of closed retentive control ring current simultaneously of second auxiliary normal opened contact 25 of A.C. contactor 5, A.C. contactor 6, the 3rd auxiliary normal opened contact 27 closures of A.C. contactor 5, run indicator 28 is lighted; The auxiliary normally closed contact 29 of first of A.C. contactor 5 disconnects, and stoppage in transit indicator light 30 extinguishes; The 3rd auxiliary normal opened contact 31 closures of A.C. contactor 6, run indicator 32 is lighted; The auxiliary normally closed contact 33 of first of A.C. contactor 6 disconnects, and stoppage in transit indicator light 34 extinguishes.
Shut down if need; send cease and desist order (pulse signal of delaying time 1 second) by industrial control system by operating personnel; the stop signal normally-closed contact 23 of industrial control system remote control output disconnects; make 18 while of the coil dead electricity of the coil 17 and the A.C. contactor 6 of A.C. contactor 5; make the main contact 35 and the main contact 36 of A.C. contactor 5 and A.C. contactor 6 correspondences disconnect simultaneously; disconnect main power source 1, make 1# Oil pump electrical machinery 9 and 2# Oil pump electrical machinery 10 stop simultaneously.Meanwhile, second auxiliary normal opened contact 25 of A.C. contactor 5 and second auxiliary normal opened contact 26 of A.C. contactor 6 disconnect simultaneously, the control loop power cut-off, and the 3rd auxiliary normal opened contact 27 of A.C. contactor 5 disconnects, and run indicator 28 is extinguished; Auxiliary normally closed contact 29 closures of first of A.C. contactor 5, stoppage in transit indicator light 30 is lighted; The 3rd auxiliary normal opened contact 31 of A.C. contactor 6 disconnects, and run indicator 32 is extinguished; Auxiliary normally closed contact 33 closures of first of A.C. contactor 6, stoppage in transit indicator light 34 is lighted.
The blower fan of the present utility model control of motor jacking oil pump, can prevent effectively main motor separate unit jacking oil pump rise respectively/stop and any overload trip after the lever destruction of oil pressure unidirectional jacking that main motor macro-axis and tooth case are caused, guaranteed the safety of main motor shaft system.Through a plurality of on-site verifications, reached very desirable effect.
Claims (3)
1. a blower fan is with the control device of motor jacking oil pump, include control device body (37), control device body (37) is provided with major loop (1) and control loop (2), it is characterized in that: major loop (1) includes a low-voltage circuit breaker (4) that is connected with three phase mains (3), the output of low-voltage circuit breaker (4) is connected with two branch roads: first branch road includes A.C. contactor (5), the output of A.C. contactor (5) is connected with thermal relay (7), and the output of thermal relay (7) is connected with motor (9); Second branch road includes A.C. contactor (6), and the output of A.C. contactor (6) is connected with thermal relay (8), and the output of thermal relay (8) is connected with motor (10).
2. a kind of blower fan according to claim 1 control device of motor jacking oil pump, it is characterized in that, described control loop (2) comprises the control loop circuit breaker (11) that is connected low-voltage circuit breaker (4) output, connect five branch roads on the output of control loop circuit breaker (11): first branch road is: first output (13) of operating selection switch (12) links to each other with the input of stop button (15), the output of stop button (15) links to each other with the input that the input and the 1# Oil pump electrical machinery (9) of start button (16) are often opened auxiliary contact (21) with first of A.C. contactor (5) respectively, and 1# Oil pump electrical machinery (9) is often opened auxiliary contact (21) output with first of A.C. contactor (5) and often opened auxiliary contact (22) input with 2# Oil pump electrical machinery (10) with first of A.C. contactor (6) and link to each other; Second output (14) of operating selection switch (12) is connected with the input of the stop signal normally-closed contact (23) of industrial control system remote control output, the output of the stop signal normally-closed contact (23) of industrial control system remote control output links to each other with the input of the initiating signal normally opened contact (24) of industrial control system remote control output and the input that 1# Oil pump electrical machinery (9) is often opened auxiliary contact (25) with second of A.C. contactor (5) respectively, and 1# Oil pump electrical machinery (9) is often opened auxiliary contact (25) output with second of A.C. contactor (5) and often opened auxiliary contact (26) input with 2# Oil pump electrical machinery (10) with second of A.C. contactor (6) and link to each other; The output of start button (16) is often opened the output of auxiliary contact (22) with 2# Oil pump electrical machinery (10) with first of A.C. contactor (6) respectively, the output of the initiating signal normally opened contact (24) of industrial control system remote control output, the output that 2# Oil pump electrical machinery (10) is often opened auxiliary contact (26) with second of A.C. contactor (6) is in parallel, and then connect with the input of the coil (18) of A.C. contactor (6) with the coil (17) and the 2# Oil pump electrical machinery (10) of A.C. contactor (5) with 1# Oil pump electrical machinery (9) respectively, connect with normally closed contact (19) input of thermal relay (7) with 1# Oil pump electrical machinery (9) again after the output parallel connection of the coil (18) of the coil (17) of 1# Oil pump electrical machinery (9) usefulness A.C. contactor (5) and 2# Oil pump electrical machinery (10) usefulness A.C. contactor (6), 1# Oil pump electrical machinery (9) is connected with the input of the normally closed contact (20) of thermal relay (8) with the output and the 2# Oil pump electrical machinery (10) of the normally closed contact (19) of thermal relay (7), second branch road is: 1# Oil pump electrical machinery (9) is often opened the series arm that auxiliary contact (27) and run indicator (28) constitute with the 3rd of A.C. contactor 5, Third Road props up and is: 1# Oil pump electrical machinery (9) first normally closed auxiliary contact (29) of A.C. contactor (5) and the series arm that stoppage in transit indicator light (30) constitutes, the 4th branch road is: 2# Oil pump electrical machinery (10) is often opened the series arm that auxiliary contact (31) and run indicator (32) constitute with the 3rd of A.C. contactor (6), and the five the tunnel props up and be: 2# Oil pump electrical machinery (10) is with first the normally closed auxiliary contact (33) of A.C. contactor and the series arm of stoppage in transit indicator light (34) formation.
3. a kind of blower fan according to claim 2 control device of motor jacking oil pump, it is characterized in that, first branch road, second branch road, the 3rd branch road, the 4th branch road, the 5th branch road are parallel with one another, wherein, an end of output, run indicator (15) one ends, stoppage in transit indicator light (16) one ends, run indicator (17) one ends and the stoppage in transit indicator light (18) of the normally closed contact (20) of 2# Oil pump electrical machinery (10) usefulness thermal relay (8) ground connection in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920034529XU CN201557068U (en) | 2009-09-15 | 2009-09-15 | Control device of electromotor lift-up oil pump for fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920034529XU CN201557068U (en) | 2009-09-15 | 2009-09-15 | Control device of electromotor lift-up oil pump for fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201557068U true CN201557068U (en) | 2010-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920034529XU Expired - Lifetime CN201557068U (en) | 2009-09-15 | 2009-09-15 | Control device of electromotor lift-up oil pump for fan |
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| Country | Link |
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| CN (1) | CN201557068U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102710215A (en) * | 2012-06-19 | 2012-10-03 | 山东恒阳重工科技有限公司 | Control circuit of oil pump motor for mobile garbage compression transfer station |
| CN102878415A (en) * | 2012-10-11 | 2013-01-16 | 大唐黄岛发电有限责任公司 | Improved fan oil station electrical control system |
| CN109751231A (en) * | 2019-02-21 | 2019-05-14 | 中国长江电力股份有限公司 | A kind of pressure oil pump electrical control gear and method |
-
2009
- 2009-09-15 CN CN200920034529XU patent/CN201557068U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102710215A (en) * | 2012-06-19 | 2012-10-03 | 山东恒阳重工科技有限公司 | Control circuit of oil pump motor for mobile garbage compression transfer station |
| CN102710215B (en) * | 2012-06-19 | 2014-10-01 | 山东恒阳重工科技有限公司 | Control circuit of oil pump motor for mobile garbage compression transfer station |
| CN102878415A (en) * | 2012-10-11 | 2013-01-16 | 大唐黄岛发电有限责任公司 | Improved fan oil station electrical control system |
| CN109751231A (en) * | 2019-02-21 | 2019-05-14 | 中国长江电力股份有限公司 | A kind of pressure oil pump electrical control gear and method |
| CN109751231B (en) * | 2019-02-21 | 2023-11-21 | 中国长江电力股份有限公司 | Electric control device and method for pressure oil pump |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20100818 |