CN112332710B - Variable frequency motor linkage control circuit of sand conveying device - Google Patents
Variable frequency motor linkage control circuit of sand conveying device Download PDFInfo
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- CN112332710B CN112332710B CN202011184619.4A CN202011184619A CN112332710B CN 112332710 B CN112332710 B CN 112332710B CN 202011184619 A CN202011184619 A CN 202011184619A CN 112332710 B CN112332710 B CN 112332710B
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- 239000004576 sand Substances 0.000 title claims abstract description 34
- 230000017525 heat dissipation Effects 0.000 claims abstract description 5
- 101000592773 Halobacterium salinarum (strain ATCC 700922 / JCM 11081 / NRC-1) 50S ribosomal protein L22 Proteins 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 claims description 5
- 102100032244 Dynein axonemal heavy chain 1 Human genes 0.000 claims description 3
- 101001016198 Homo sapiens Dynein axonemal heavy chain 1 Proteins 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 230000000630 rising effect Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 30
- 239000006004 Quartz sand Substances 0.000 description 4
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/02—Details of starting control
- H02P1/022—Security devices, e.g. correct phase sequencing
- H02P1/024—Protection against simultaneous starting by two starting devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/02—Details of starting control
- H02P1/04—Means for controlling progress of starting sequence in dependence upon time or upon current, speed, or other motor parameter
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/54—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting two or more dynamo-electric motors
- H02P1/56—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting two or more dynamo-electric motors simultaneously
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Security & Cryptography (AREA)
- Control Of Multiple Motors (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
A frequency conversion motor linkage control circuit of a sand conveying device comprises a frequency converter VF, wherein the frequency converter VF comprises a main loop input end, a main loop output end, a digital signal output end DO1 and a digital signal output end DO2, the main loop output end is used for providing a power supply for a No. 1 motor and a No. 2 motor, the No. 1 motor and the No. 2 motor are controlled by an interlocking control circuit, the No. 1 motor is cooled by a No. 1 motor fan, and the No. 2 motor is cooled by a No. 2 motor fan; no. 1 motor fan is controlled by No. 1 motor fan control circuit, and No. 2 motor fan is controlled by No. 2 motor fan control circuit. The control circuit realizes that one frequency converter controls two variable frequency motors, the two variable frequency motors cannot be started to operate simultaneously, an interlocking function is realized to prevent misoperation, and in addition, in order to prevent the operating temperature of the variable frequency motors from rising, the linkage control of the fan and the variable frequency motors is realized, and the effective heat dissipation of the variable frequency motors in the operating process is ensured.
Description
Technical Field
The invention belongs to the field of oil-gas field oil-gas yield increasing operation circuit control, and particularly relates to a sand conveying device variable frequency motor linkage control circuit.
Background
The shale gas in China has been developed on a large scale, and a reasonable fracturing operation mode is the key for realizing the development with high efficiency and low cost. The sand conveying device is an important part in the fracturing operation process and is mainly responsible for conveying different quartz sands in the sand tank to the sand mixing device. Traditional defeated sand device adopts the dead weight to flow out quartz sand, because the fracturing site operation condition is poor, the condition of wet sand often appears, when quartz sand humidity is great, causes defeated sand pipe of defeated sand device to block up easily, causes the unable sand mixing device of carrying of quartz sand.
In order to improve the reliability and stability of the sand conveying device, an electric sand conveying device is required to be designed, and quartz sand in a sand tank is conveyed to the sand mixing device in a mode of driving a packing auger by a variable frequency motor. The process control requirement of the electric sand conveying device is that one motor runs, the other motor is standby, and the motor can adjust the speed to control the sand conveying amount, so that a large amount of wet sand is prevented from blocking a sand conveying pipeline. At present, no related matched circuit control system exists to realize the control process. The existing motor control circuit, such as the 'one-pass water motor control circuit' disclosed in chinese patent CN201332383Y, cannot obtain the related technical inspiration, so how to design a sand conveying device variable frequency motor linkage control circuit is a problem that needs to be solved urgently.
Disclosure of Invention
In view of the technical problems in the background art, the invention provides a sand conveying device variable frequency motor linkage control circuit, which realizes that one frequency converter controls two variable frequency motors, and the two variable frequency motors can not be started to operate simultaneously, realizes an interlocking function to prevent misoperation, and realizes linkage control of a fan and the variable frequency motors to prevent the operating temperature of the variable frequency motors from rising, thereby ensuring effective heat dissipation of the variable frequency motors in the operating process; the start and stop, the speed regulation control operation and the key electrical parameter display of the two variable frequency motors are communicated and completed on a remote PC.
In order to solve the technical problems, the invention adopts the following technical scheme to realize:
a frequency conversion motor linkage control circuit of a sand conveying device comprises a frequency converter VF, wherein the frequency converter VF comprises a main loop input end, a main loop output end, a digital signal output end DO1 and a digital signal output end DO2, the main loop output end is used for providing a power supply for a No. 1 motor and a No. 2 motor, the No. 1 motor and the No. 2 motor are controlled by an interlocking control circuit, the No. 1 motor is cooled by a No. 1 motor fan, and the No. 2 motor is cooled by a No. 2 motor fan; the No. 1 motor fan is controlled by the No. 1 motor fan control circuit, and the No. 2 motor fan is controlled by the No. 2 motor fan control circuit;
the interlocking control circuit comprises a COM point of a digital signal output end DO1, the COM point of a digital signal output end DO1 is connected with a contactor KM2 normally closed contact and a contactor KM1 coil in series and connected with a zero line, and the COM point of a digital signal output end DO2 is connected with a contactor KM1 normally closed contact and a contactor KM2 coil in series and connected with the zero line; the NO point of the digital signal output end DO1 is connected with the NO point of the digital signal output end DO2, the connected public end is connected with one end of a contactor KM2 normally open contact, the contactor KM1 normally open contact is connected with a contactor KM2 normally open contact in parallel, and a parallel loop formed by the contactor KM1 normally open contact and the contactor KM2 normally open contact is connected with a live wire and a zero wire through a fuse FU 01;
the primary loop of the No. 1 motor fan control circuit comprises a thermal relay FR11, and the No. 1 motor fan is connected with a main contact of the thermal relay FR11, a main contact of a contactor KM11 and a breaker QF1 in series and connected with a power supply; the No. 1 motor fan control circuit secondary loop comprises a change-over switch SA11, a change-over switch SA11, a contactor KM11 coil, a contactor KM1 normally open contact and a thermal relay FR11 auxiliary contact form a series loop, the series loop and the contactor KM11 normally open contact are connected in parallel to form a parallel loop, and the parallel loop is connected with a fuse FU11 in series and is connected with a live wire and a zero wire;
the No. 2 motor fan control circuit primary loop comprises a thermal relay FR22, and the No. 2 motor fan is connected with a main contact of the thermal relay FR22, a main contact of a contactor KM22 and a breaker QF2 in series and connected with a power supply; no. 2 motor fan control circuit secondary circuit includes change over switch SA22, and change over switch SA22 forms the series circuit with contactor KM22 coil, contactor KM2 normally open contact and thermorelay FR22 auxiliary contact, and the parallel circuit forms the parallel circuit with contactor KM22 normally open contact in parallel, and the parallel circuit is established ties with fuse FU22 and is connected live wire and zero line.
In a preferred scheme, a normally open contact of a contactor KM2 in the interlocking control circuit is connected with an indicator lamp HL2 in series; a normally open contact of the contactor KM1 is connected with an indicator lamp HL1 in series; a series circuit formed by the normally open contact of the contactor KM2 and the indicator lamp HL2 is connected in parallel with a series circuit formed by the normally open contact of the contactor KM1 and the indicator lamp HL1, and a series circuit formed by the normally open contact of the contactor KM1 and the indicator lamp HL1 is connected in parallel with the indicator lamp HL 01.
In a preferable scheme, the change-over switch SA11 and the change-over switch SA22 both comprise a local control gear and a remote control gear, and when the change-over switch SA11 is switched to the remote control gear, the on-off of a coil of the contactor KM11 is used for controlling the No. 1 motor fan to automatically start and stop; when the change-over switch SA22 is switched to a remote control gear, the on-off of a coil of the contactor KM22 is used for controlling the automatic start and stop of the No. 2 motor fan.
In a preferable scheme, a normally open contact of a contactor KM11 in the No. 1 motor fan control circuit is connected with an indicator lamp HL12 in series; the series loop formed by the normally open contact of the contactor KM11 and the indicator lamp HL12 is connected with the indicator lamp HL11 in parallel.
In a preferable scheme, a normally open contact of a contactor KM22 in the No. 2 motor fan control circuit is connected with an indicator lamp HL23 in series; a series loop formed by the normally open contact of the contactor KM22 and an indicator lamp HL23 is connected with the indicator lamp HL22 in parallel.
In the preferred scheme, a contactor KM1 main contact is connected in series between the No. 1 motor and the output end of a main loop of a frequency converter VF; and a main contact of a contactor KM2 is connected in series between the No. 2 motor and the output end of a main loop of the frequency converter VF.
In a preferred scheme, the input end of a main loop of the frequency converter VF controls the connection of a power supply through a breaker QF 0.
In a preferred embodiment, the frequency converter VF includes an ethernet interface, and the ethernet interface is in communication connection with the PC through a switch.
This patent can reach following beneficial effect:
1. the frequency converter controls the two variable frequency motors, so that the two variable frequency motors cannot be started and operated simultaneously, misoperation of personnel is prevented, and the whole circuit system is well protected.
2. In order to prevent the operating temperature of the variable frequency motor from rising, the fans are started simultaneously when the variable frequency motor is started, and effective heat dissipation of the variable frequency motor in the operating process is ensured.
3. The data exchange between the frequency converter and the PC is realized through an Ethernet protocol, and the starting and stopping, the speed regulation control operation and the key electrical parameter display of the two variable frequency motors are completed.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic view of a variable frequency motor linkage control circuit of the sand conveying device of the present invention;
FIG. 2 is a schematic view of the linkage operation of the No. 1 motor and the No. 1 motor fan of the present invention;
FIG. 3 is a schematic view of the linkage operation of the blower of the No. 2 motor and the No. 2 motor of the present invention;
FIG. 4 is an enlarged view of the area I in FIG. 1;
FIG. 5 is an enlarged view of area II of FIG. 1;
fig. 6 is an enlarged view of the region III in fig. 1.
In the figure: KM represents a contactor; QF denotes circuit breaker; FU denotes a fuse: FR represents a thermal relay; SA denotes a changeover switch; HL represents an indicator light; VF represents a frequency converter; PE represents a ground terminal; NO represents a normally open contact; COM represents a common point; the numbers following the english code of the electrical components in the figures represent the numbering.
Detailed Description
The preferable scheme is as shown in fig. 1 to 6, the variable frequency motor linkage control circuit of the sand conveying device comprises a frequency converter VF, wherein the frequency converter VF comprises a main loop input end, a main loop output end, a digital signal output end DO1 and a digital signal output end DO2, the main loop output end is used for providing a power supply for a No. 1 motor and a No. 2 motor, the No. 1 motor and the No. 2 motor are controlled by the interlocking control circuit, the No. 1 motor is cooled by a No. 1 motor fan, and the No. 2 motor is cooled by a No. 2 motor fan; the No. 1 motor fan is controlled by the No. 1 motor fan control circuit, and the No. 2 motor fan is controlled by the No. 2 motor fan control circuit;
the interlocking control circuit comprises a COM point of a digital signal output end DO1, the COM point of a digital signal output end DO1 is connected with a contactor KM2 normally closed contact and a contactor KM1 coil in series and connected with a zero line, and the COM point of a digital signal output end DO2 is connected with a contactor KM1 normally closed contact and a contactor KM2 coil in series and connected with the zero line; the NO point of the digital signal output end DO1 is connected with the NO point of the digital signal output end DO2, the connected public end is connected with one end of a contactor KM2 normally open contact, the contactor KM1 normally open contact is connected with a contactor KM2 normally open contact in parallel, and a parallel loop formed by the contactor KM1 normally open contact and the contactor KM2 normally open contact is connected with a live wire and a zero wire through a fuse FU 01;
the primary loop of the No. 1 motor fan control circuit comprises a thermal relay FR11, and the No. 1 motor fan is connected with a main contact of the thermal relay FR11, a main contact of a contactor KM11 and a breaker QF1 in series and connected with a power supply; the No. 1 motor fan control circuit secondary loop comprises a change-over switch SA11, a series loop is formed by the change-over switch SA11, a coil of a contactor KM11, a normally open contact of a contactor KM1 and an auxiliary contact of a thermal relay FR11, the series loop and a normally open contact of a contactor KM11 are connected in parallel to form a parallel loop, and the parallel loop is connected with a fuse FU11 in series and is connected with a live wire and a zero wire;
the No. 2 motor fan control circuit primary loop comprises a thermal relay FR22, and the No. 2 motor fan is connected with a main contact of the thermal relay FR22, a main contact of a contactor KM22 and a breaker QF2 in series and connected with a power supply; no. 2 motor fan control circuit secondary circuit includes change over switch SA22, and change over switch SA22 forms the series circuit with contactor KM22 coil, contactor KM2 normally open contact and thermorelay FR22 auxiliary contact, and the parallel circuit forms the parallel circuit with contactor KM22 normally open contact in parallel, and the parallel circuit is established ties with fuse FU22 and is connected live wire and zero line.
The circuit is mainly realized by the logic interlocking of the operation feedback and the forbidden starting signal in the frequency converter and the core control circuit: the frequency converter VF is connected with 2 motors (namely a No. 1 motor and a No. 2 motor), but the frequency converter drives only the No. 1 motor to operate at any time, namely the No. 1 motor is prohibited from operating; and when the No. 2 motor runs, the No. 1 motor is forbidden to run. When No. 1 motor start operation, No. 1 motor fan is the operation of starting simultaneously, and when No. 2 motor start operation, No. 2 motor fan is the operation of starting simultaneously. In addition, when 2 motors are in a maintenance debugging state, 2 motor fans should have a manual start-stop control function. The power supply in the technical scheme is 380V three-phase alternating current.
As shown in fig. 1, four circuit breakers QF0, QF1, QF2 and QF3 are switched on to connect a main loop power supply, wherein the circuit breaker QF0 supplies power to a frequency converter VF loop, the circuit breaker QF1 supplies power to a motor fan loop No. 1, the circuit breaker QF2 supplies power to a fan loop No. 2, and the circuit breaker QF3 supplies power to a switching power supply loop.
The KM1 contactor is used for switching on and switching off a motor No. 1, the KM2 contactor is used for switching on and switching off a motor No. 2, the KM11 contactor is used for switching on and switching off a motor No. 1 fan, and the KM22 contactor is used for switching on and switching off a motor No. 2 fan.
FR11 thermal relay is used for carrying out thermal overload protection to No. 1 motor fan, and FR22 thermal relay is used for carrying out thermal overload protection to No. 2 motor fan.
The frequency converter VF is used for carrying out speed regulation control on the motors No. 1 and No. 2, and is combined with the contactors KM1 and KM2 to realize that only 1 motor can be started to run at any time for 2 motors.
The switching power supply is used for converting an alternating current 220V power supply into a direct current 24V power supply, and the service voltage of the switch is met.
The switch transmits the key data of the frequency converter to the PC through the Ethernet, and can be connected with a plurality of frequency converters.
The PC machine realizes data exchange between the frequency converter and the PC machine through an Ethernet protocol, and finishes the starting and stopping, the speed regulation control operation and the key electrical parameter display of the two variable frequency motors.
The fuse protects the control circuit from overload and short circuit.
The indicator light is used for indicating whether the corresponding loop is in a power-on operation state or not.
The change-over switch is used for realizing that 2 motors and fans can be manually or automatically controlled.
The variable frequency motor is used for driving the sand conveying device to normally operate.
The motor fan is used for 2 inverter motor dispel the heat at the operation in-process, prevents inverter motor operating temperature rising.
Further, a normally open contact of a contactor KM2 in the interlocking control circuit is connected with an indicator lamp HL2 in series; a normally open contact of the contactor KM1 is connected with an indicator lamp HL1 in series; a series circuit formed by the normally open contact of the contactor KM2 and the indicator lamp HL2 is connected in parallel with a series circuit formed by the normally open contact of the contactor KM1 and the indicator lamp HL1, and a series circuit formed by the normally open contact of the contactor KM1 and the indicator lamp HL1 is connected in parallel with the indicator lamp HL 01.
Further, the change-over switch SA11 and the change-over switch SA22 both comprise a local control gear and a remote control gear, and when the change-over switch SA11 is switched to the remote control gear, the on-off of a coil of the contactor KM11 is used for controlling the No. 1 motor fan to automatically start and stop; when the change-over switch SA22 is switched to a remote control gear, the on-off of a coil of the contactor KM22 is used for controlling the No. 2 motor fan to automatically start and stop.
Further, a normally open contact of a contactor KM11 in the No. 1 motor fan control circuit is connected with an indicator lamp HL12 in series; the series loop formed by the normally open contact of the contactor KM11 and the indicator lamp HL12 is connected with the indicator lamp HL11 in parallel.
Further, a normally open contact of a contactor KM22 in the No. 2 motor fan control circuit is connected with an indicator lamp HL23 in series; the series loop formed by the normally open contact of the contactor KM22 and the indicator lamp HL23 is connected with the indicator lamp HL22 in parallel.
Further, a main contact of a contactor KM1 is connected in series between the No. 1 motor and the output end of a main loop of the frequency converter VF; and a main contact of a contactor KM2 is connected in series between the No. 2 motor and the output end of a main loop of the frequency converter VF.
Further, the main loop input end of the frequency converter VF controls the connection of the power supply through a breaker QF 0.
Further, the frequency converter VF includes an ethernet interface, and the ethernet interface is connected to the PC through the switch.
The working principle of the whole circuit is as follows:
the method comprises the steps of switching on all four breakers of QF0, QF1, QF2 and QF3, rotating two change-over switches of SA11 and SA22 of loops of a No. 1 motor fan and a No. 2 motor fan to an automatic state, enabling a starting frequency converter VF to be in a power-on standby state, sending a starting command for starting the No. 1 motor to the frequency converter through a PC (personal computer), closing a DO1 output normally-open point of the frequency converter VF at the moment, enabling a KM2 contactor (with two ends being 11 and 12) to be in a closed state, enabling coils of a KM1 contactor (with two ends being A1 and A2) to be electrified, closing a KM1 main contact, enabling the No. 1 motor to be started and operated in a power-on mode, enabling normally-open auxiliary contacts of the KM1 contactor (with two ends being 23 and 24) to be closed, indicating that the KM1 is lighted, indicating that the No. 1 motor is in an operating state, and enabling normally-open contacts of the KM1 contactor (with two ends being 13 and 14) to be closed, enabling coils of the KM11 contactor (with two ends being A1 and A2) to be electrified, the KM11 main contact is closed immediately, the fan of the motor No. 1 is electrified to start and operate, meanwhile, the normally closed auxiliary contact of the KM1 contactor (the two ends are 11 and 12) is in an open state, no matter how PC starts the motor No. 2, the coil of the KM2 contactor (the two ends are A1 and A2) cannot be electrified, so that the KM2 main contact cannot be closed, and therefore the motor No. 2 cannot start and operate. The linkage operation of the No. 1 motor and the No. 1 motor fan is as shown in figure 2.
The No. 2 motor of the sand conveying device variable frequency motor linkage control circuit starts to operate, and the No. 1 motor prohibits starting to operate according to the following principle:
the method comprises the steps of switching on all four breakers of QF0, QF1, QF2 and QF3, rotating two change-over switches of SA11 and SA22 of loops of a No. 1 motor fan and a No. 2 motor fan to an automatic state, enabling a starting frequency converter VF to be in a power-on standby state, sending a starting command for starting the No. 2 motor to the frequency converter through a PC (personal computer), closing a DO2 output normally open point of the frequency converter VF at the moment, enabling a KM1 contactor (with two ends being 11 and 12) to be in a closed state, enabling coils of a KM2 contactor (with two ends being A1 and A2) to be electrified, closing a KM2 main contact and enabling the No. 2 motor to be electrified for starting and running, enabling normally open auxiliary contacts of the KM2 contactor (with two ends being 23 and 24) to be closed, indicating that the KM2 is lighted, indicating that the No. 2 motor is in a running state, and enabling normally open contacts of the KM2 contactor (with two ends being 13 and 14) to be closed, enabling coils of the KM22 contactor (with two ends being A1 and A2) to be electrified, the KM22 main contact is closed immediately, the blower of the No. 2 motor is electrified to start and operate, meanwhile, the normally closed auxiliary contact of the KM2 contactor (the two ends are 11 and 12) is in an open state, no matter how the PC starts the No. 1 motor, the coil of the KM1 contactor (the two ends are A1 and A2) cannot be electrified, so that the KM1 main contact cannot be closed, and therefore the No. 1 motor cannot start and operate. The linkage operation of the No. 2 motor and the No. 2 motor fan is as shown in figure 3.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (7)
1. The utility model provides a defeated sand device inverter motor coordinated control circuit, includes converter VF, and converter VF includes major loop input, major loop output, digital signal output DO1 and digital signal output DO2, and the major loop output is used for providing power supply, its characterized in that for No. 1 motor and No. 2 motor: the No. 1 motor and the No. 2 motor are controlled by an interlocking control circuit, the No. 1 motor is subjected to heat dissipation by the No. 1 motor fan, and the No. 2 motor is subjected to heat dissipation by the No. 2 motor fan; the No. 1 motor fan is controlled by the No. 1 motor fan control circuit, and the No. 2 motor fan is controlled by the No. 2 motor fan control circuit;
the interlocking control circuit comprises a COM point of a digital signal output end DO1, the COM point of a digital signal output end DO1 is connected with a contactor KM2 normally closed contact and a contactor KM1 coil in series and connected with a zero line, and the COM point of a digital signal output end DO2 is connected with a contactor KM1 normally closed contact and a contactor KM2 coil in series and connected with the zero line; the NO point of the digital signal output end DO1 is connected with the NO point of the digital signal output end DO2, the connected public end is connected with one end of a contactor KM2 normally open contact, the contactor KM1 normally open contact is connected with a contactor KM2 normally open contact in parallel, and a parallel loop formed by the contactor KM1 normally open contact and the contactor KM2 normally open contact is connected with a live wire and a zero wire through a fuse FU 01;
the primary loop of the No. 1 motor fan control circuit comprises a thermal relay FR11, and the No. 1 motor fan is connected with a main contact of the thermal relay FR11, a main contact of a contactor KM11 and a breaker QF1 in series and connected with a power supply; the No. 1 motor fan control circuit secondary loop comprises a change-over switch SA11, a series loop is formed by the change-over switch SA11, a coil of a contactor KM11, a normally open contact of a contactor KM1 and an auxiliary contact of a thermal relay FR11, the series loop and a normally open contact of a contactor KM11 are connected in parallel to form a parallel loop, and the parallel loop is connected with a fuse FU11 in series and is connected with a live wire and a zero wire;
the No. 2 motor fan control circuit primary loop comprises a thermal relay FR22, and the No. 2 motor fan is connected with a main contact of the thermal relay FR22, a main contact of a contactor KM22 and a breaker QF2 in series and connected with a power supply; the No. 2 motor fan control circuit secondary loop comprises a change-over switch SA22, a series loop is formed by the change-over switch SA22, a coil of a contactor KM22, a normally open contact of a contactor KM2 and an auxiliary contact of a thermal relay FR22, the series loop and a normally open contact of a contactor KM22 are connected in parallel to form a parallel loop, and the parallel loop is connected with a fuse FU22 in series and is connected with a live wire and a zero wire;
the frequency converter VF comprises an Ethernet interface which is in communication connection with the PC through a switch; the switch transmits the frequency converter data to the PC through the Ethernet, and the PC realizes the data exchange between the frequency converter and the PC through an Ethernet protocol to complete the starting and stopping, the speed regulation control operation and the key electrical parameter display of the two variable frequency motors;
and the breaker QF3 is also included, and the breaker QF3 provides power for the switching power supply circuit.
2. The sand conveying device variable frequency motor coordinated control circuit of claim 1, characterized in that: a normally open contact of a contactor KM2 in the interlocking control circuit is connected with an indicator lamp HL2 in series; a normally open contact of the contactor KM1 is connected with an indicator lamp HL1 in series; a series circuit formed by the normally open contact of the contactor KM2 and the indicator lamp HL2 is connected in parallel with a series circuit formed by the normally open contact of the contactor KM1 and the indicator lamp HL1, and a series circuit formed by the normally open contact of the contactor KM1 and the indicator lamp HL1 is connected in parallel with the indicator lamp HL 01.
3. The sand conveying device variable frequency motor coordinated control circuit of claim 1, characterized in that: the change-over switch SA11 and the change-over switch SA22 both comprise a local control gear and a remote control gear, and when the change-over switch SA11 is switched to the remote control gear, the on-off of a coil of the contactor KM11 is used for controlling the No. 1 motor fan to automatically start and stop; when the change-over switch SA22 is switched to a remote control gear, the on-off of a coil of the contactor KM22 is used for controlling the No. 2 motor fan to automatically start and stop.
4. The sand conveying device variable frequency motor coordinated control circuit of claim 3, wherein: a normally open contact of a contactor KM11 in the No. 1 motor fan control circuit is connected with an indicator lamp HL12 in series; a series loop formed by the normally open contact of the contactor KM11 and an indicator lamp HL12 is connected with the indicator lamp HL11 in parallel.
5. The sand conveying device variable frequency motor coordinated control circuit of claim 3, characterized in that: a normally open contact of a contactor KM22 in the No. 2 motor fan control circuit is connected with an indicator lamp HL23 in series; a series loop formed by the normally open contact of the contactor KM22 and an indicator lamp HL23 is connected with the indicator lamp HL22 in parallel.
6. The sand conveying device variable frequency motor coordinated control circuit of claim 1, characterized in that: a contactor KM1 main contact is connected in series between the No. 1 motor and the output end of the main loop of the frequency converter VF; and a main contact of a contactor KM2 is connected in series between the No. 2 motor and the output end of a main loop of the frequency converter VF.
7. The sand conveying device variable frequency motor coordinated control circuit of claim 1, characterized in that: the input end of a main loop of the frequency converter VF controls the connection of a power supply through a breaker QF 0.
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| CN202011184619.4A CN112332710B (en) | 2020-10-29 | 2020-10-29 | Variable frequency motor linkage control circuit of sand conveying device |
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| CN202011184619.4A CN112332710B (en) | 2020-10-29 | 2020-10-29 | Variable frequency motor linkage control circuit of sand conveying device |
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| CN112332710B true CN112332710B (en) | 2022-08-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868744A (en) * | 2015-05-27 | 2015-08-26 | 江苏亨通光纤科技有限公司 | Dual-motor single variable-frequency drive in drive system and control method thereof |
| CN204652269U (en) * | 2015-06-16 | 2015-09-16 | 正和集团股份有限公司 | Motor for subsequent use automatically switches and runs circuit |
| CN110259675A (en) * | 2019-06-21 | 2019-09-20 | 泰豪科技股份有限公司 | Water circulating pump band cooling blower frequency conversion one drag two control circuit and system |
| CN111162695A (en) * | 2020-01-22 | 2020-05-15 | 湖北冠驰智慧科技有限公司 | Method for starting multiple large motors by using PLC to control one frequency converter |
| CN213342053U (en) * | 2020-10-29 | 2021-06-01 | 中石化四机石油机械有限公司 | Variable frequency motor linkage control circuit of sand conveying device |
-
2020
- 2020-10-29 CN CN202011184619.4A patent/CN112332710B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868744A (en) * | 2015-05-27 | 2015-08-26 | 江苏亨通光纤科技有限公司 | Dual-motor single variable-frequency drive in drive system and control method thereof |
| CN204652269U (en) * | 2015-06-16 | 2015-09-16 | 正和集团股份有限公司 | Motor for subsequent use automatically switches and runs circuit |
| CN110259675A (en) * | 2019-06-21 | 2019-09-20 | 泰豪科技股份有限公司 | Water circulating pump band cooling blower frequency conversion one drag two control circuit and system |
| CN111162695A (en) * | 2020-01-22 | 2020-05-15 | 湖北冠驰智慧科技有限公司 | Method for starting multiple large motors by using PLC to control one frequency converter |
| CN213342053U (en) * | 2020-10-29 | 2021-06-01 | 中石化四机石油机械有限公司 | Variable frequency motor linkage control circuit of sand conveying device |
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Effective date of registration: 20220804 Address after: 100020 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Applicant after: CHINA PETROLEUM & CHEMICAL Corp. Applicant after: SINOPEC OILFIELD EQUIPMENT Corp. Address before: 434020 Longshan Temple Street, Jingzhou District, Jingzhou, Hubei Applicant before: SINOPEC SIJI PETROLEUM MACHINERY Co.,Ltd. Applicant before: SINOPEC OILFIELD EQUIPMENT Corp. |
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