CN109751231A - A kind of pressure oil pump electrical control gear and method - Google Patents
A kind of pressure oil pump electrical control gear and method Download PDFInfo
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- CN109751231A CN109751231A CN201910130585.1A CN201910130585A CN109751231A CN 109751231 A CN109751231 A CN 109751231A CN 201910130585 A CN201910130585 A CN 201910130585A CN 109751231 A CN109751231 A CN 109751231A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005086 pumping Methods 0.000 claims abstract description 56
- 239000012190 activator Substances 0.000 claims abstract description 37
- 238000000819 phase cycle Methods 0.000 claims abstract description 29
- 210000003746 feather Anatomy 0.000 claims abstract description 28
- 230000001681 protective effect Effects 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims description 48
- 230000005415 magnetization Effects 0.000 claims description 22
- 230000005284 excitation Effects 0.000 claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 5
- 239000007858 starting material Substances 0.000 claims description 3
- 238000005457 optimization Methods 0.000 abstract description 4
- 238000011160 research Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
A kind of pressure oil pump electrical control gear and method, including primary circuit, secondary circuit.The primary circuit includes circuit breaker Q F01, phase sequence protective device of computer KVS, positive sequence contactor KM02, inverted sequence contactor KM03, main contactor KM00, bypass contactor KM01, soft activator RQ；The secondary circuit includes start button SB01, stop button SB02, load button SB03, unloading button SB04, opens pump relay K01, termination of pumping relay K00, load relay K02, unloading relay K03, positive sequence contactor KM02, inverted sequence contactor KM03, charge valve 1EV, feather valve 2EV, start and stop switching handle SW1 plus unloading switching handle SW2, control cabinet failure point relay K06.The present invention carries out technical optimization and research to governor oil gear pressure oil pump control mode, to improve pressure oil pump operational reliability.
Description
Technical field
The present invention relates to pressure oil pump control technology field, specifically a kind of pressure oil pump electrical control gear and method.
Background technique
Pressure oil pump is power equipment important in most of industrial productions and daily life, governor oil pressure device pressure
Oil pump is the important ancillary equipment of power plant, to maintenance pressure oil tank oil pressure, it is ensured that governor action message plays a decisive role, it is desirable that compared with
High reliability.In actual production, the control system of pressure oil pump has the following deficiencies: in terms of design and operation
(1), pressure oil pump energy consumption is larger, due to the method for operation of its long-time total pressure power frequency, causes energy waste, and aggravate to pump
Abrasion.
(2), cause that oil impact occurs in pipeline when pump start, generate biggish shaking impact and noise, influence fuel feeding
The service life of pump.Pressure oil pump generates biggish rush of current when starting, and to oil pump and entire control system, there are certain wind
Danger, does not have overcurrent protection measure.
(3), pressure oil pump control mode, which is designed without, considers phase sequence measure, is easy to cause oil pump to invert, loads
Failure.Pressure oil pump is easy to appear the reversed situation of phase sequence when overhauling, and causes pump to turn to not right, and pressure oil is worked as in motor reversion
Pump startup is unable to normal load when loading, oil pump load failure, pipeline pressure cannot boost for a long time will will appear pressure oil tank
The case where low oil pressure, it will unit failure low oil pressure is caused to be shut down.
(4), when oil pump control mode designs, the voltage and current of detection Oil pump electrical machinery power inleting terminal is not accounted for.
Summary of the invention
In order to overcome the shortcomings of prior art, the present invention provides a kind of pressure oil pump electrical control gear and method,
Technical optimization and research are carried out to governor oil gear pressure oil pump control mode, to improve pressure oil pump operational reliability.
The technical scheme adopted by the invention is as follows:
A kind of pressure oil pump electrical control gear, including primary circuit, secondary circuit.
The primary circuit includes circuit breaker Q F01, phase sequence protective device of computer KVS, positive sequence contactor KM02, inverted sequence contactor
KM03, main contactor KM00, bypass contactor KM01, soft activator RQ；
The secondary circuit includes start button SB01, stop button SB02, load button SB03, unloading button SB04, opens pump
Relay K01, termination of pumping relay K00, load relay K02, unloading relay K03, positive sequence contactor KM02, inverted sequence contactor
KM03, charge valve 1EV, feather valve 2EV, start and stop switching handle SW1 plus unloading switching handle SW2, control cabinet failure point relay
K06；
Whether three-phase L1, L2, L3 are respectively connected to phase sequence protective device of computer KVS, correct for detecting phase sequence；
Any two, which are in parallel, accesses voltmeter PV, for detecting the voltage of main control loop；
Single-phase series access ammeter PA, for detecting electric current when Oil pump electrical machinery operation；
Soft activator RQ is by being spaced apart QF02 connection 220V power supply；
The power transfer relay node SS1 connection main contactor KM00 of soft activator RQ, for disconnecting electrical return when breaking down
Road；
The starting of soft activator RQ bypasses relay SS2 connection bypass contactor KM01, starts from low to high according to voltage, is used for
Control starting current；
Start and stop switching handle SW1, it start button SB01, termination of pumping relay K00, opens pump relay K01 and is sequentially connected in series to be formed
Pump control loop is opened manually；
The start and stop switching handle SW1, start button SB01 first connects and then and then and termination of pumping in parallel with pump relay K01 is opened
Pump self-holding circuit is opened in relay K00 series connection locking, formation；
Start and stop switching handle SW1, stop button SB02, termination of pumping relay K00, which are sequentially connected in series, to be formed manual termination of pumping and controls back
Road；
Start and stop switching handle SW1, monitoring start command electricity-saving appliance node J1, control cabinet failure point relay K06, termination of pumping after
Electric appliance K00, it opens pump relay K01 and is sequentially connected in series, form a monitoring distant place and start control loop；
The start and stop switch handle SW1, control cabinet start command electricity-saving appliance node Z1, control cabinet failure point relay K06, termination of pumping
Relay K01, open pump relay K00 be sequentially connected in series to be formed a control cabinet distant place starting control loop,
Start and stop switching handle SW1, monitoring cease and desist order electricity-saving appliance node J2, control cabinet failure point relay K06, termination of pumping after
Electric appliance K00 is sequentially connected in series to form monitoring distant place stopping control loop；
Start and stop switching handle SW1, control cabinet are ceased and desisted order electricity-saving appliance node Z2, control cabinet failure point relay K06, termination of pumping
Relay K00 is sequentially connected in series to form control cabinet distant place stopping control loop；
Pump relay K01, inverted sequence contactor KM03, phase sequence protective device of computer KVS, the positive phase sequence relay KM02 of opening is sequentially connected in series shape
At positive phase protection control loop；
Pump relay K01, positive sequence contactor KM02, phase sequence protective device of computer KVS, the inverted sequence contactor KM03 of opening is sequentially connected in series shape
Control loop is protected at inverted sequence；
It is described plus unloading switching handle SW2, load button SB03, open pump relay K01, load relay K02 be sequentially connected in series shape
At manual loading control loop；
Described plus unloading switching handle SW2, unloading button SB04, unloading starter K03 are sequentially connected in series to form manual Unloading Control
Circuit；
Described plus unloading switching handle SW2, monitoring loading command electricity-saving appliance node J3, control cabinet failure point relay K06, pump is opened
Relay K01, load relay K02 are sequentially connected in series to form monitoring distant place load control loop；
Described plus unloading switching handle SW2, it control cabinet loading command electricity-saving appliance node Z3, control cabinet failure point relay K06, opens
Pump relay K01, load relay K02 are sequentially connected in series to form control cabinet distant place load control loop；
Described plus unloading switching handle SW2, monitoring unloading order electricity-saving appliance node J4, control cabinet failure point relay K06, unloading
Relay K03 is sequentially connected in series to form monitoring distant place Unloading Control circuit；
Described plus unloading switching handle SW2, it control cabinet unloading order electricity-saving appliance node Z4, control cabinet failure point relay K06, unloads
Relay K03 is carried to be sequentially connected in series to form control cabinet distant place Unloading Control circuit；
Pump relay K01, load relay K02, the charge valve 1EV of opening connects to form charge valve control loop；
It is described open pump relay K01, unloading relay K03 first connect, and then formation feather valve in parallel with feather valve 2EV control back
Road.
A kind of pressure oil pump electrical control gear of the present invention and method, technical effect are as follows:
1, the present invention is designed optimization to pressure oil pump control system, utilizes soft activator itself by introducing soft activator
Soft-start feature, greatly reduce impact and the noise of pressure oil pump when starting, improve the service life of oil feed pump.
2, the present invention passes through the closed-loop control system using phase sequence protective device of computer, positive sequence contactor and inverted sequence contactor composition
Adjusting the phase sequence of oil pump, making pump start and loading normal, it is ensured that pressure oil tank and pipeline pressure are in the normal range, it is ensured that
The reliability of system, fuel feeding is stable and energy-saving effect is obvious.
3, the power supply quality to motor is effectively improved using the characteristic of soft activator, improves power factor, thus most
Limits improve the efficiency of motor, realize fuel feeding stabilization, energy saving purpose, and improve the quality of fuel feeding, reduce
The operating cost of equipment.
4, using oil pump secondary control principle, to oil pump and the control mode of feather valve is added to do optimization and perfect, equal energy
The start and stop of oil pump are realized under manually and automatically control model and add unloading, it is ensured that can preferentially stop oil under any circumstance
Pump.
5, using the concept of control cabinet fault point, the priority acccess control to oil pump controlling cabinet and monitoring system is adequately achieved
Power, monitoring system only control cabinet break down Shi Caineng possess to oil pump and plus feather valve control authority.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 is a control loop control figure of the invention.
Fig. 2 is secondary control loop control figure of the invention.
Fig. 3 is the device of the invention structural schematic diagram.
Fig. 4 is the device of the invention control schematic diagram.
Specific embodiment
A kind of pressure oil pump electrical control gear, including primary circuit, secondary circuit, subsidiary control loop.
The primary circuit includes circuit breaker Q F01, phase sequence protective device of computer KVS, positive sequence contactor KM02, inverted sequence contactor
KM03, main contactor KM00, bypass contactor KM01, soft activator RQ；
The secondary circuit includes start button SB01, stop button SB02, load button SB03, unloading button SB04, opens pump
Relay K01, termination of pumping relay K00, load relay K02, unloading relay K03, positive sequence contactor KM02, inverted sequence contactor
KM03, charge valve 1EV, feather valve 2EV, start and stop switching handle SW1 plus unloading switching handle SW2, control cabinet failure point relay
K06；
Whether three-phase L1, L2, L3 are respectively connected to phase sequence protective device of computer KVS, correct for detecting phase sequence；
Any two, which are in parallel, accesses voltmeter PV, for detecting the voltage of main control loop；
Single-phase series access ammeter PA, for detecting electric current when Oil pump electrical machinery operation；
Soft activator RQ is by being spaced apart QF02 connection 220V power supply；
The power transfer relay node SS1 connection main contactor KM00 of soft activator RQ, for disconnecting electrical return when breaking down
Road；
The starting of soft activator RQ bypasses relay SS2 connection bypass contactor KM01, starts from low to high according to voltage and (drops
Pressure starting), to control starting current, prevent electric motor starting electric current excessive.
It is spaced apart QF02 to be directly powered with the control section of soft activator RQ (CL1-CL2), powers for soft activator RQ, it is main
Power unit no power and do not provide operation order.
RUN (operation) and STOP (stopping) order for opening pump relay K01 connection soft activator RQ, if any
Necessity should also connect other input/output terminals.When the Stop that ceases and desist order be 1 (connection) and operation order RUN be 1
(connection) sends out starting command at present；When the Stop that ceases and desist order is 0 (disconnection) and operation order RUN be 1(connection) or 0
Halt command is issued when (disconnection).Operation and shutdown are controlled by state 1 (operation) and 0 (shutdown), RUN
Consider simultaneously with STOP input state.When powering on or failure hand-reset if there is then motor can rise again for RUN order
It is dynamic.
Secondary circuit, which mainly has, to be opened pump control loop manually, manual termination of pumping control loop, opens pump control loop automatically, is automatic
Termination of pumping control loop, positive phase protection control loop, inverted sequence protect control loop, manual loading control loop, manual Unloading Control
Circuit loads control loop, automatic Unloading Control circuit, charge valve control loop and feather valve control loop automatically；
It is described manually open pump control loop, automatically open pump control loop composition open pump control circuit；
The manual termination of pumping control loop and pump trip control loop constitute termination of pumping control circuit；
The manual loading control loop and automatic load control loop constitute load control circuit；
The manual Unloading Control circuit and automatic Unloading Control circuit constitute Unloading Control circuit.
Start and stop switching handle SW1 plus unloading switching handle SW2 has now with distant place handoff functionality, and handle is switched to
Manual control circuit works when now, and automatic control circuit works when being switched to a distant place.
Start and stop switching handle SW1, it start button SB01, termination of pumping relay K00, opens pump relay K01 and is sequentially connected in series
It is formed and opens pump control loop manually；Termination of pumping relay K00 is latched in the condition of the control loop to be started for pressure oil pump
With stop oil pump in loading procedure at any time, once oil pump of ceasing and desisting order is out of service.
Start and stop switching handle SW1, start button SB01 first connect it is then in parallel with pump relay K01 is opened then with
Pump self-holding circuit is opened in termination of pumping relay K00 series connection locking, formation.
The start and stop switching handle SW1, stop button SB02, termination of pumping relay K00 are sequentially connected in series to form manual termination of pumping control
Circuit processed.The circuit does not have any barring condition, stops oil pump priority higher than other controls.
The start and stop switching handle SW1, monitoring start command electricity-saving appliance node J1(start command relay node, relay
Device model Schneider brand, RXM4AB2P7+RXZE2S114M+RXM021FP), control cabinet failure point relay K06, termination of pumping
Relay K00, it opens pump relay K01 and is sequentially connected in series, form a monitoring distant place and start control loop.It is closed in the condition of the control loop
The normally closed node of lock control cabinet failure point relay K06, be in order to when control cabinet control loop breaks down, Cai monitoring system
It has permission the start and stop of control oil pump and adds unloading.
The start and stop switch handle SW1, control cabinet start command electricity-saving appliance node Z1(start command relay node, after
Electric appliance model Schneider brand, RXM4AB2P7+RXZE2S114M+RXM021FP), control cabinet failure point relay K06, stop
Pump relay K01, open pump relay K00 be sequentially connected in series to be formed a control cabinet distant place starting control loop, the condition of the control loop
The normally opened node of middle control cabinet failure point relay K06 is to indicate that control cabinet just has only when control cabinet control loop is normal
The start and stop of permission control oil pump and plus unloading.
Start and stop switching handle SW1, monitoring the electricity-saving appliance node J2(that ceases and desist order cease and desist order relay node, relay
Device model Schneider brand, RXM4AB2P7+RXZE2S114M+RXM021FP), control cabinet failure point relay K06, termination of pumping
Relay K00 is sequentially connected in series to form monitoring distant place stopping control loop.
Start and stop switching handle SW1, control cabinet the electricity-saving appliance node Z2(that ceases and desist order cease and desist order relay node, after
Electric appliance model Schneider brand, RXM4AB2P7+RXZE2S114M+RXM021FP), control cabinet failure point relay K06, stop
Pump relay K00 is sequentially connected in series to form control cabinet distant place stopping control loop.
Pump relay K01, inverted sequence contactor KM03, phase sequence protective device of computer KVS, the positive phase sequence relay KM02 of opening successively goes here and there
Connection forms positive phase protection control loop.
Pump relay K01, positive sequence contactor KM02, phase sequence protective device of computer KVS, the inverted sequence contactor KM03 of opening successively goes here and there
Connection forms inverted sequence protection control loop.
It is described plus unloading switching handle SW2, load button SB03, open pump relay K01, load relay K02 successively go here and there
Connection forms manual loading control loop.
Described plus unloading switching handle SW2, unloading button SB04, unloading starter K03 are sequentially connected in series to form manual unloading
Control loop.
Described plus unloading switching handle SW2, monitoring loading command electricity-saving appliance node J3(loading command relay node, after
Electric appliance model Schneider brand, RXM4AB2P7+RXZE2S114M+RXM021FP), control cabinet failure point relay K06, open
Pump relay K01, load relay K02 are sequentially connected in series to form monitoring distant place load control loop.The circuit is for monitoring system
A distant place controls the load of pressure oil pump when system hair loading command, and pump relay K01 is opened in locking in the control condition of the control loop
It is that indicate only could control oil pump in the case where oil pump has been started up.
Described plus unloading switching handle SW2, control cabinet loading command electricity-saving appliance node Z3(loading command relay node,
Relay model Schneider brand, RXM4AB2P7+RXZE2S114M+RXM021FP), control cabinet failure point relay K06,
Open pump relay K01, load relay K02 is sequentially connected in series to form control cabinet distant place load control loop.The circuit is for controlling
The load of loading command control pressure oil pump is sent out when cabinet fault-free processed, pump relay is opened in locking in the control condition of the control loop
K01 is to indicate the ability control oil pump only after oil pump has been started up.
Described plus unloading switching handle SW2, monitoring unloading order electricity-saving appliance node J4(unload order relay node, after
Electric appliance model Schneider brand, RXM4AB2P7+RXZE2S114M+RXM021FP), control cabinet failure point relay K06, unload
Relay K03 is carried to be sequentially connected in series to form monitoring distant place Unloading Control circuit.
Described plus unloading switching handle SW2, control cabinet unloading order electricity-saving appliance node Z4(unload order relay node,
Relay model Schneider brand, RXM4AB2P7+RXZE2S114M+RXM021FP), control cabinet failure point relay K06,
Unloading relay K03 is sequentially connected in series to form control cabinet distant place Unloading Control circuit.
Pump relay K01, load relay K02, the charge valve 1EV of opening connects to form charge valve control loop；In oil
Pump just can control charge valve in operating status, while under conditions of meeting oil pump and having loading command.
It is described open pump relay K01, unloading relay K03 first connect, and then formation feather valve control in parallel with feather valve 2EV
Circuit processed.It forces to be unloaded when for pump start, as long as there is the i.e. controllable feather valve 2EV of oil pump unloading order, avoids oil
Pump bringing onto load starting brings damage to oil pump.
The subsidiary control loop, including it is spaced apart QF03, fan FAN2, socket CZ, light bulb PL, mainly wind in control cabinet
The power supply of fan, socket and cabinet intraoral illumination.
(1), a control loop control principle: closing circuit breaker Q F01, and any method is selected to make to open pump control electricity
(such as press start button SB01 or a distant place issues start command) in road opens pump relay K01 coil magnetization, opens pump self-sustaining
Control loop opens the normally opened node closure of pump relay K01, and the normally opened node of pump relay K01 that opens of positive phase protection control circuit closes
It closes；If power phase is correct, the normally opened node of the phase sequence protective device of computer KVS in positive phase protection control loop is closed, and positive sequence connects
Tentaculum KM02 coil magnetization, the positive sequence contactor KM02 main contacts closure in primary circuit, is connected to the operation of soft activator RQ
With the normally opened node closure for opening pump relay K01 ceased and desisted order on terminal, soft activator RQ hair start command makes a secondary control
Main contactor KM00 main contacts closure in circuit, the normally opened node closure of starting bypass relay SS2 of subsequent soft activator RQ,
Start bypass contactor KM01 coil magnetization, the main contacts closure of the bypass contactor KM01 in a control loop, soft start
The operation of device RQ reduced-voltage starting Oil pump electrical machinery.If power phase is on the contrary, phase sequence protective device of computer KVS in positive phase protection control loop
Normally opened node disconnect, positive sequence contactor KM02 coil loss of excitation, inverted sequence protect control loop in phase sequence protective device of computer KVS it is normal
Close node is closed, inverted sequence contactor KM03 coil magnetization, the inverted sequence contactor KM03 main contacts closure in a control loop, even
It connects and is closed in the operation of soft activator RQ and the normally opened node for opening pump relay K01 on terminal of ceasing and desisting order, soft activator RQ
Hair start command be closed the main contactor KM00 main contacts in control loop, the starting of subsequent soft activator RQ bypass after
The normally opened node closure of electric appliance SS2, starts bypass contactor KM01 coil magnetization, the bypass contactor KM01 in a control loop
Main contacts closure, soft activator RQ reduced-voltage starting Oil pump electrical machinery operation.
When soft activator RQ breaks down, the normally opened node of the malfunctioning node SS1 of soft activator RQ is disconnected, termination of pumping relay
The main contacts of K00 coil loss of excitation, the termination of pumping relay K00 in a control loop disconnects, and makes a secondary control of entire Oil pump electrical machinery
Circuit processed disconnects power supply.
(2), secondary control loop control principle: the secondary control loop includes opening pump control circuit, termination of pumping control electricity
Road, load control circuit, Unloading Control circuit, can complete under manually and automatically two kinds of control models.
(1) MANUAL CONTROL mode: start and stop switch handle SW1 and unloading switching handle SW2 are added to be switched to existing ground mode, press
Start button SB01 opens pump control loop manually and obtains electric, opens pump relay K01 coil magnetization, the normally opened node closure of K01, self-insurance
Hold control loop obtain it is electric, according to the starting Oil pump electrical machinery operation of the principle of control loop；Meanwhile in feather valve control loop
Opening the normally opened node closure of pump relay K01 makes feather valve 2EV coil obtain electrical excitation, carries out forcing to unload to oil pump before opening pump
It carries, avoids starting under load Oil pump electrical machinery；
Load button SB03 is pressed, opening pump relay K01 normally opened node closure, to obtain manual loading control loop electric, opens pump relay
The normally opened node closure of device K01, loads relay K02 coil magnetization, the normally opened section of load relay K02 in charge valve control loop
The auxiliary contact KM01-AX of point closure, oil pump bypass contactor KM01 in run mode is connected, adding in charge valve control loop
It carries valve 1EV coil and obtains electrical excitation, oil pump is made to be in stress state；
Unloading button SB04 is pressed, the unloading relay K03 coil in Unloading Control circuit obtains electrical excitation, feather valve control loop
In unloading relay K03 normally opened node closure, feather valve 2EV obtains electrical excitation, and oil pump is unloaded；
Stop button SB02 is pressed, the termination of pumping relay K00 coil in termination of pumping control loop obtains electrical excitation, opens pump manually and controls back
The normally closed node of termination of pumping relay K00 in road disconnects, and opens pump relay K01 coil losing electricity loss of excitation, opening pump control circuit power loss makes
Oil pump electrical machinery is out of service.
(2) automatic control mode: this is sentenced for control cabinet breaks down, and explains Oil pump electrical machinery distant place automatic control mode
Control principle.
Oil pump start and stop switch handle SW1 and unloading switching handle SW2 are added to be switched to distant place mode, when control cabinet breaks down
When the normally opened node of control cabinet failure point relay K06 disconnect, normally closed node closure, at this time a control cabinet distant place open pump control loop,
Control cabinet distant place termination of pumping control loop, a control cabinet distant place load the control cabinet of control loop, control cabinet distant place Unloading Control circuit
The normally opened node of power transfer relay K06 disconnects, and pump control loop, monitoring distant place termination of pumping control loop, a monitoring distant place are opened in a monitoring distant place
The normally closed node connection of control cabinet failure point relay K06 for loading control loop, monitoring distant place Unloading Control circuit.
When pressure oil pump control system receives monitoring start command electricity-saving appliance node J1, pump control loop is opened in a monitoring distant place
The normally closed node of control cabinet failure point relay K06 connect, after the normally closed node of termination of pumping relay K00 connects series connection, to make
Pump relay K01 coil magnetization is opened, according to the starting Oil pump electrical machinery operation of the control principle of a control loop.
When pressure oil pump control system receives monitoring loading command electricity-saving appliance node J3, a monitoring distant place loads control loop
The normally closed node of control cabinet failure point relay K06 connect, open after the normally opened node of pump relay K01 connects series connection, thus make plus
It carries relay K02 coil and obtains electrical excitation；The auxiliary contact KM01- of bypass contactor KM01 in charge valve load control loop
AX is connected, and the normally opened node closure of load relay K02, to make charge valve 1EV coil magnetization, oil pump is loaded.
When pressure oil pump control system receives monitoring unloading order electricity-saving appliance node J4, distant place Unloading Control circuit is monitored
The normally closed node of control cabinet failure point relay K06 connect, electrical excitation is obtained to make to unload relay K03 coil, in feather valve
The normally opened node closure of unloading relay K03 in control loop, to make feather valve 2EV coil magnetization, oil pump is unloaded.
When pressure oil pump control system receives monitoring termination of pumping order J2, the control cabinet event of distant place termination of pumping control loop is monitored
Hinder the normally closed node of point relay K06 to connect, to make termination of pumping relay K00 coil magnetization, disconnect in pump start control loop
Termination of pumping relay K00 normally closed node, disconnect the starting control loop power supply of oil pump, disconnect the electricity of control loop of oil pump
Source keeps Oil pump electrical machinery out of service.
Fig. 3 is the device of the invention structural schematic diagram, as shown in figure 3, a kind of pressure oil pump electrical control gear, including control
Cabinet shell 1 processed, the upper surface of the control cabinet shell 1 are inlaid with meter 5, indicator light 6, switching handle 7 and button 8, control cabinet
The back side of shell 1 is welded with stationary backplate 2, and the quadrangle of the stationary backplate 2, which is dug, threaded mounting hole 3, is used for control cabinet
Shell 1 is fixed, and the control cabinet shell 1 is made of insulative water-proof material, can circuit structure inside effective protection, control
The right side design of cabinet shell 1 has heat release hole, and for heat caused by electric components to be discharged, the meter 5 can be real-time
Display electric current and voltage analog parameter, the indicator light 6 can show the state and indicating fault of oil pump, the switching handle
7 can switch oil pump and add the hand automatic control mode of feather valve, and the button 8 is able to carry out the starting, stopping, load of equipment
With stop operation, the stationary backplate 5 and 1 integrally weldedization structure of control cabinet shell, and stationary backplate 5 is worn by screw
Threaded mounting hole 2 is crossed to be fixed on control cabinet shell 1；The inside of the control cabinet shell 1 is equipped with radiator fan, power supply is inserted
Seat, headlamp and CPU module 9.
Fig. 4 is the device of the invention control schematic diagram, as shown in figure 4, the power pins of the CPU module 9 are connected with electricity
Source module 16, the data input pin of the CPU module 9, which is connected with, to be opened into module 10, and data output end, which is connected with, outputs module 11,
It outputs module 11 and is connected separately with indicator light 6 and relay 12；The auxiliary node of relay 12 directly drives oil pump, and with load
Valve 13 and feather valve 14 connect；The mould of the CPU module 9 goes out module 15 and connect with meter 5, and the CPU module 9 is according to receiving
Current data is analyzed and processed by instruction, and real-time Transmission is to meter 5；
The CPU module 9 selects 140 CPU 67260 of Schneider；
Described open selects 140 DDI35300 of Schneider into module 10；
The module 11 of outputing selects 140 DDO35300 of Schneider；
The mould goes out module 15 and selects 140 ACO13000 of Schneider；
The power module 16 selects 140 CPS 22400 of Schneider；
The meter 5 select KLY-C96-G 4 ~ 20m 0 ~ 100% 240 °；
The indicator light 6 selects Schneider XB2-BVB3LC；
The relay 12 selects Schneider brand, RXM4AB2P7+RXZE2S114M+RXM021FP；
The switching handle 7 select Schneider LW39-16B-6KE-3333X 6-G.
Claims (3)
1. a kind of pressure oil pump electrical control gear, including primary circuit, secondary circuit, it is characterised in that:
The primary circuit include circuit breaker Q F01, phase sequence protective device of computer KVS, positive sequence contactor KM02, inverted sequence contactor KM03,
Main contactor KM00, bypass contactor KM01, soft activator RQ；
The secondary circuit includes start button SB01, stop button SB02, load button SB03, unloading button SB04, opens pump
Relay K01, termination of pumping relay K00, load relay K02, unloading relay K03, positive sequence contactor KM02, inverted sequence contactor
KM03, charge valve 1EV, feather valve 2EV, start and stop switching handle SW1 plus unloading switching handle SW2, control cabinet failure point relay
K06；
Whether three-phase L1, L2, L3 are respectively connected to phase sequence protective device of computer KVS, correct for detecting phase sequence；
Any two, which are in parallel, accesses voltmeter PV, for detecting the voltage of main control loop；
Single-phase series access ammeter PA, for detecting electric current when Oil pump electrical machinery operation；
Soft activator RQ is by being spaced apart QF02 connection 220V power supply；
The power transfer relay node SS1 connection main contactor KM00 of soft activator RQ, for disconnecting electrical return when breaking down
Road；
The starting of soft activator RQ bypasses relay SS2 connection bypass contactor KM01, starts from low to high according to voltage, is used for
Control starting current；
Start and stop switching handle SW1, it start button SB01, termination of pumping relay K00, opens pump relay K01 and is sequentially connected in series to be formed
Pump control loop is opened manually；
The start and stop switching handle SW1, start button SB01 first connects and then and then and termination of pumping in parallel with pump relay K01 is opened
Pump self-holding circuit is opened in relay K00 series connection locking, formation；
Start and stop switching handle SW1, stop button SB02, termination of pumping relay K00, which are sequentially connected in series, to be formed manual termination of pumping and controls back
Road；
Start and stop switching handle SW1, monitoring start command electricity-saving appliance node J1, control cabinet failure point relay K06, termination of pumping after
Electric appliance K00, it opens pump relay K01 and is sequentially connected in series, form a monitoring distant place and start control loop；
The start and stop switch handle SW1, control cabinet start command electricity-saving appliance node Z1, control cabinet failure point relay K06, termination of pumping
Relay K01, open pump relay K00 be sequentially connected in series to be formed a control cabinet distant place starting control loop,
Start and stop switching handle SW1, monitoring cease and desist order electricity-saving appliance node J2, control cabinet failure point relay K06, termination of pumping after
Electric appliance K00 is sequentially connected in series to form monitoring distant place stopping control loop；
Start and stop switching handle SW1, control cabinet are ceased and desisted order electricity-saving appliance node Z2, control cabinet failure point relay K06, termination of pumping
Relay K00 is sequentially connected in series to form control cabinet distant place stopping control loop；
Pump relay K01, inverted sequence contactor KM03, phase sequence protective device of computer KVS, the positive phase sequence relay KM02 of opening is sequentially connected in series shape
At positive phase protection control loop；
Pump relay K01, positive sequence contactor KM02, phase sequence protective device of computer KVS, the inverted sequence contactor KM03 of opening is sequentially connected in series shape
Control loop is protected at inverted sequence；
It is described plus unloading switching handle SW2, load button SB03, open pump relay K01, load relay K02 be sequentially connected in series shape
At manual loading control loop；
Described plus unloading switching handle SW2, unloading button SB04, unloading starter K03 are sequentially connected in series to form manual Unloading Control
Circuit；
Described plus unloading switching handle SW2, monitoring loading command electricity-saving appliance node J3, control cabinet failure point relay K06, pump is opened
Relay K01, load relay K02 are sequentially connected in series to form monitoring distant place load control loop；
Described plus unloading switching handle SW2, it control cabinet loading command electricity-saving appliance node Z3, control cabinet failure point relay K06, opens
Pump relay K01, load relay K02 are sequentially connected in series to form control cabinet distant place load control loop；
Described plus unloading switching handle SW2, monitoring unloading order electricity-saving appliance node J4, control cabinet failure point relay K06, unloading
Relay K03 is sequentially connected in series to form monitoring distant place Unloading Control circuit；
Described plus unloading switching handle SW2, it control cabinet unloading order electricity-saving appliance node Z4, control cabinet failure point relay K06, unloads
Relay K03 is carried to be sequentially connected in series to form control cabinet distant place Unloading Control circuit；
Pump relay K01, load relay K02, the charge valve 1EV of opening connects to form charge valve control loop；
It is described open pump relay K01, unloading relay K03 first connect, and then formation feather valve in parallel with feather valve 2EV control back
Road.
2. using a kind of control loop controlling party of pressure oil pump of pressure oil pump electrical control gear as described in claim 1
Method, it is characterised in that: close circuit breaker Q F01, any method of selection, which makes to open in pump control circuit, opens pump relay K01
Coil magnetization, that opens pump self-sustaining control loop opens the normally opened node closure of pump relay K01, and positive phase protection control circuit opens pump
The normally opened node closure of relay K01；If power phase is correct, phase sequence protective device of computer KVS's in positive phase protection control loop
Normally opened node is closed, positive sequence contactor KM02 coil magnetization, the positive sequence contactor KM02 main contacts closure in primary circuit, connection
It is closed in the operation of soft activator RQ and the normally opened node for opening pump relay K01 on terminal of ceasing and desisting order, soft activator RQ hair
Start command is closed the main contactor KM00 main contacts in a control loop, and the starting of subsequent soft activator RQ bypasses relay
The normally opened node closure of device SS2, starts bypass contactor KM01 coil magnetization, the bypass contactor KM01's in a control loop
Main contacts closure, the operation of soft activator RQ reduced-voltage starting Oil pump electrical machinery；
If power phase is on the contrary, the normally opened node of the phase sequence protective device of computer KVS in positive phase protection control loop disconnects, positive sequence is connect
Tentaculum KM02 coil loss of excitation, inverted sequence protect the normally closed node closure of the phase sequence protective device of computer KVS in control loop, inverted sequence contactor
KM03 coil magnetization, the inverted sequence contactor KM03 main contacts closure in a control loop, is connected to the operation of soft activator RQ
With the normally opened node closure for opening pump relay K01 ceased and desisted order on terminal, soft activator RQ hair start command makes a secondary control
Main contactor KM00 main contacts closure in circuit, the normally opened node closure of starting bypass relay SS2 of subsequent soft activator RQ,
Start bypass contactor KM01 coil magnetization, the main contacts closure of the bypass contactor KM01 in a control loop, soft start
The operation of device RQ reduced-voltage starting Oil pump electrical machinery；
When soft activator RQ breaks down, the normally opened node of the malfunctioning node SS1 of soft activator RQ is disconnected, termination of pumping relay K00
The main contacts of coil loss of excitation, the termination of pumping relay K00 in a control loop disconnects, and returns a secondary control of entire Oil pump electrical machinery
Road disconnects power supply.
3. using a kind of pressure oil pump secondary control loop controlling party of pressure oil pump electrical control gear as described in claim 1
Method, it is characterised in that:
The secondary control loop includes opening pump control circuit, termination of pumping control circuit, load control circuit, Unloading Control circuit,
It can be completed under manually and automatically two kinds of control models；
(1) MANUAL CONTROL mode: start and stop switch handle SW1 and unloading switching handle SW2 are added to be switched to existing ground mode, press starting
Button SB01 opens pump control loop manually and obtains electric, opens pump relay K01 coil magnetization, the normally opened node closure of K01, self-sustaining control
Circuit processed obtain it is electric, according to the starting Oil pump electrical machinery operation of the principle of control loop；Meanwhile pump is opened in feather valve control loop
The normally opened node closure of relay K01 makes feather valve 2EV coil obtain electrical excitation, carries out forced unloading to oil pump before opening pump, keeps away
Exempt from starting under load Oil pump electrical machinery；
Load button SB03 is pressed, opening pump relay K01 normally opened node closure, to obtain manual loading control loop electric, opens pump relay
The normally opened node closure of device K01, loads relay K02 coil magnetization, the normally opened section of load relay K02 in charge valve control loop
The auxiliary contact KM01-AX of point closure, oil pump bypass contactor KM01 in run mode is connected, adding in charge valve control loop
It carries valve 1EV coil and obtains electrical excitation, oil pump is made to be in stress state；
Unloading button SB04 is pressed, the unloading relay K03 coil in Unloading Control circuit obtains electrical excitation, feather valve control loop
In unloading relay K03 normally opened node closure, feather valve 2EV obtains electrical excitation, and oil pump is unloaded；
Stop button SB02 is pressed, the termination of pumping relay K00 coil in termination of pumping control loop obtains electrical excitation, opens pump manually and controls back
The normally closed node of termination of pumping relay K00 in road disconnects, and opens pump relay K01 coil losing electricity loss of excitation, opening pump control circuit power loss makes
Oil pump electrical machinery is out of service；
(2) automatic control mode: oil pump start and stop switch handle SW1 and unloading switching handle SW2 are added to be switched to distant place mode, work as control
The normally opened node of control cabinet failure point relay K06 disconnects when cabinet processed breaks down, and normally closed node closure, a control cabinet distant place is opened at this time
Control loop, control cabinet distant place termination of pumping control loop, control cabinet distant place load control loop, control cabinet distant place Unloading Control is pumped to return
The normally opened node of the control cabinet power transfer relay K06 on road disconnects, and pump control loop is opened in a monitoring distant place, monitoring distant place termination of pumping controls back
Road, a monitoring distant place load control loop, the normally closed node of control cabinet failure point relay K06 in monitoring distant place Unloading Control circuit connects
It is logical；
When pressure oil pump control system receives monitoring start command electricity-saving appliance node J1, the control of pump control loop is opened in a monitoring distant place
The normally closed node of cabinet failure point relay K06 processed is connected, after the normally closed node of termination of pumping relay K00 connects series connection, to make to open pump
Relay K01 coil magnetization, according to the starting Oil pump electrical machinery operation of the control principle of a control loop；
When pressure oil pump control system receives monitoring loading command electricity-saving appliance node J3, the control of monitoring distant place load control loop
The normally closed node of cabinet failure point relay K06 processed is connected, and is opened after the normally opened node of pump relay K01 connects series connection, thus make load after
Electric appliance K02 coil obtains electrical excitation；The auxiliary contact KM01-AX of bypass contactor KM01 in charge valve load control loop connects
Logical, the normally opened node closure of load relay K02, to make charge valve 1EV coil magnetization, oil pump is loaded；
When pressure oil pump control system receives monitoring unloading order electricity-saving appliance node J4, the control in distant place Unloading Control circuit is monitored
The normally closed node of cabinet failure point relay K06 processed is connected, so that unloading relay K03 coil be made to obtain electrical excitation, is controlled in feather valve
The normally opened node closure of unloading relay K03 in circuit, to make feather valve 2EV coil magnetization, oil pump is unloaded；
When pressure oil pump control system receives monitoring termination of pumping order J2, the control cabinet fault point of distant place termination of pumping control loop is monitored
The normally closed node of relay K06 is connected, to make termination of pumping relay K00 coil magnetization, is disconnected and being stopped in pump start control loop
The normally closed node of pump relay K00 disconnects the starting control loop power supply of oil pump, and the power supply for disconnecting control loop of oil pump makes
Oil pump electrical machinery is out of service.
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| WO2021017858A1 (en) * | 2019-07-29 | 2021-02-04 | 浙江鸿友压缩机制造有限公司 | Electronic pressure switch having delay closing electromagnetic unloading valve |
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