CN211701903U - Mobile frequency conversion loop switching vehicle - Google Patents
Mobile frequency conversion loop switching vehicle Download PDFInfo
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- CN211701903U CN211701903U CN201922244854.5U CN201922244854U CN211701903U CN 211701903 U CN211701903 U CN 211701903U CN 201922244854 U CN201922244854 U CN 201922244854U CN 211701903 U CN211701903 U CN 211701903U
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Abstract
The utility model discloses a movable frequency conversion loop switching vehicle, which comprises a vehicle body, a frequency converter primary loop and a secondary control loop, wherein the frequency converter primary loop comprises a three-phase live wire, an incoming line breaker, a main loop leading-out live wire, a motor, a frequency converter, a reactor and an isolation switch, wherein the three-phase live wire is led out from external current; the secondary control circuit includes a power-on/restart circuit including the 6 th terminal of the X1 terminal row of the secondary circuit control board, the 7 th terminal of the X1 terminal row of the secondary circuit control board, a stop button, the 8 th terminal of the X1 terminal row of the secondary circuit control board, the 9 th terminal of the X1 terminal row of the secondary circuit control board, a start button, the 10 th terminal of the X1 terminal row of the secondary circuit control board, and a relay. The utility model has the characteristics of equipment treatment efficiency is high, production resumes smoothly, the commonality is strong, can wide application in equipment trouble field of salvageing.
Description
Technical Field
The utility model relates to an equipment trouble salvagees the field, especially relates to a portable frequency conversion return circuit switching car.
Background
The development of petrochemical technology, the process has higher and higher requirements on the running speed regulation of partial pumps, especially for a single important pump such as a blower and an induced draft fan of a heating furnace, when a frequency converter fails and cannot be used continuously, the process operation is extremely complex even if the frequency converter is switched to a power frequency loop, the energy consumption is increased, and the control risk is increased; if no power frequency loop must rely on natural ventilation, this will cause the reduction of the throughput of the production device, and the comprehensive loss outside the equipment is huge.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of above-mentioned background art, provide a portable frequency conversion return circuit switching car, make it have equipment treatment efficiency height, production resume smooth, the characteristics that the commonality is strong.
The utility model provides a pair of portable frequency conversion return circuit switching car, including the automobile body that the bottom is equipped with universal caster, be equipped with converter primary circuit and secondary control loop on the automobile body, converter primary circuit draws forth live wire, motor, converter, reactor and isolation switch including three-phase live wire, inlet wire circuit breaker, the main circuit that draws from external current, the three-phase live wire passes through the inlet wire circuit breaker and links to each other with the converter input, three-phase live wire is drawn forth to converter output port, three-phase live wire loops through the reactor and the isolation switch links to each other with the motor, main circuit draws forth live wire both ends and links to each other with live wire and secondary control loop respectively; the secondary control circuit includes a power-on/restart circuit including a 6 th terminal of an X1 terminal row of a secondary circuit control board, a 7 th terminal of an X1 terminal row of the secondary circuit control board, a stop button, an 8 th terminal of an X1 terminal row of the secondary circuit control board, a 9 th terminal of an X1 terminal row of the secondary circuit control board, a start button, a first normally-on point of a relay, a 10 th terminal of an X1 terminal row of the secondary circuit control board, and a relay, the 6 th terminal of an X1 terminal row of the secondary circuit control board, the stop button, the 7 th terminal of an X1 terminal row of the secondary circuit control board, the 8 th terminal of an X1 terminal row of the secondary circuit control board, the start button, the 9 th terminal of the X1 terminal row of the secondary circuit control board, the 10 th terminal of an X1 terminal row of the secondary circuit control board, and the relay being connected in series in order, the shutdown button is connected with a main loop leading-out live wire through a lead-in circuit breaker, the relay is connected with a zero line, and a first pair of normally open points of the relay is connected with the startup button in parallel.
In the above technical scheme, secondary control circuit still includes the separating brake circuit, the separating brake circuit is including the third of the relay that establishes ties in proper order to the normally closed point, the 5 th terminal of the X1 terminal row of secondary circuit control panel and stop the lamp, the third of relay is to normally closed point one end draw the live wire through inlet wire circuit breaker and major loop and link to each other and with stop the button, the third of relay is to normally closed point other end through the 5 th terminal of the X1 terminal row of secondary circuit control panel and link to each other with stop the lamp, stop the lamp and link to each other with the zero line.
In the above technical solution, the secondary control circuit further includes a frequency conversion operation circuit, the frequency conversion operation circuit includes a second normally open point of the relay and the relay, one end of the second normally open point of the relay is connected to the main circuit outgoing live wire through the incoming line breaker, the other end of the second normally open point of the relay is connected to one end of the relay, the other end of the relay is connected to the zero line, the frequency converter is respectively provided with a3 rd terminal of an interface of a part of a frequency converter I/O board analog quantity XA0 and a4 th terminal of an interface of a part of a frequency converter I/O board analog quantity XD24, the frequency converter is provided with a terminal connected to the terminals, the frequency converter is provided with terminals connected to the terminals, and the terminals are respectively connected to two ends of the first normally open point of the relay.
In the above technical solution, the secondary control circuit further includes a frequency conversion fault circuit, the frequency conversion fault circuit includes a first relay output point of the frequency converter, a second relay output point of the frequency converter, an 11 th terminal of the X1 terminal row of the secondary circuit control board, and a relay, one end of a first normally closed point of the relay is connected with a leading-out live wire of the primary circuit through an incoming line breaker, the other end of the first normally closed point of the relay is connected with a stop button, the first normally closed point of the relay is connected with a third normally closed point of the relay, one end of the first relay output point of the frequency converter is respectively connected with the first normally closed point of the relay and the incoming line breaker, and is connected with the leading-out live wire of the primary circuit through the incoming line breaker, the second relay output point of the frequency converter is connected with an 11 th terminal of the X1 terminal row of the secondary circuit control board, the 11 th terminal of the X1 terminal row of the secondary circuit control board is, the other end of the relay is connected with a zero line, a3 rd terminal of an interface of a frequency converter I/O board analog quantity XR03 part and a2 nd terminal of an interface of a frequency converter I/O board analog quantity XR03 part are respectively arranged on the frequency converter, the terminals are connected with a first output relay point, and the terminals are connected with a second output relay point of the frequency converter.
In the above technical scheme, the secondary control circuit further comprises a power interference circuit, the power interference circuit comprises a power interference relay, a terminal of the power interference relay is connected with the main circuit outgoing live wire through a lead-in circuit breaker, the terminal of the power interference relay is connected with a zero line, and a normally open terminal of the power interference relay is connected with two ends of a first normally open point of the relay respectively.
In the above technical solution, the secondary control circuit further includes a DCS (distributed control system) interlocked shutdown circuit, the DCS interlocked shutdown circuit includes a first control point of a distributed control system DCS and a relay, one end of the first control point of the distributed control system DCS is connected to a live wire led out from the main circuit through an incoming line breaker, the other end of the first control point of the distributed control system DCS is connected to one end of the relay, the other end of the relay is connected to a zero line, and two ends of a first pair of normally closed points of the relay are respectively connected to a 10 th terminal of an X1 terminal row of a secondary circuit control board and the relay; the frequency converter is respectively provided with a 6 th terminal of an interface of a frequency converter I/O board analog quantity XAI part and a 7 th terminal of the interface of the frequency converter I/O board analog quantity XAI part, the frequency converter is provided with a terminal connected with the terminal, the terminal is connected with a distributed control system DCS, a 4-20mA analog quantity signal is introduced, the frequency converter is respectively provided with a3 rd terminal of an interface of a frequency converter I/O board analog quantity XA0 part and a4 th terminal of an interface of a frequency converter I/O board analog quantity XA0 part, the frequency converter is provided with a terminal connected with the terminal, the terminal is connected with the distributed control system DCS and feeds back 4-20mA analog quantity signals to the distributed control system DCS.
In the above technical solution, two ends of the second pair of normally open points of the relay are respectively connected with the distributed control system DCS.
In the above technical solution, two ends of the second pair of normally closed points of the relay are respectively connected to the distributed control system DCS.
In the above technical solution, the start/restart circuit further comprises a start lamp, one end of the start lamp is connected to the 10 th terminal of the X1 terminal row of the secondary circuit control board, and the other end of the start lamp is connected to the zero line; the frequency conversion fault circuit further comprises a fault lamp, one end of the fault lamp is connected with the 11 th terminal of the X1 terminal row of the secondary circuit control board, and the other end of the fault lamp is respectively connected with the relay and the zero line; the starting/restarting circuit further comprises a power lamp, one end of the power lamp is connected with the main loop leading-out live wire, and the other end of the power lamp is connected with the zero line.
In the technical scheme, the primary loop of the frequency converter further comprises a secondary fuse, and two ends of the secondary fuse are respectively connected with the incoming line breaker and the input end of the frequency converter; the secondary control loop is positioned on one side of the vehicle body, and the frequency converter is positioned on one side of the vehicle body adjacent to the secondary control loop.
The utility model discloses portable frequency conversion return circuit switching car has following beneficial effect:
1. the access time of the replacement device is only 0.5-1 hour under the condition of the fault of the variable frequency loop, the original process control mode is quickly recovered, and 7 hours are also needed for the fastest replacement treatment of equipment;
2. the replacing device has strong universality and can be used for replacing any variable frequency loop in a power distribution room;
3. the motor protection function can be realized by inputting the nameplate parameters without considering the power of the motor;
4. the replacement device can easily realize other functions with additional requirements, such as restarting, interlocking on and off of the instrument, fault signals and outputting of the running state of the motor to the DCS and the like.
Drawings
Fig. 1 is a schematic view of the appearance structure of the mobile frequency conversion loop switching vehicle of the present invention;
fig. 2 is a schematic circuit diagram of the mobile frequency conversion loop switching vehicle of the present invention;
fig. 3 is a schematic diagram of a circuit structure of a primary loop of a frequency converter in the mobile frequency conversion loop switching vehicle of the present invention;
fig. 4 is a schematic diagram of a circuit structure of a secondary control loop in the mobile frequency conversion loop switching vehicle of the present invention;
fig. 5 is a circuit configuration of the frequency conversion operation circuit in fig. 4 connected to the distributed control system DCS;
fig. 6 is a circuit configuration of the frequency conversion fault circuit in fig. 4 connected to the distributed control system DCS.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples, but the examples should not be construed as limiting the present invention.
Referring to fig. 1 to 2, the utility model discloses portable frequency conversion return circuit switching car, including the bottom be equipped with the automobile body 1 of universal caster (not shown in the figure), be equipped with converter primary loop 2 and secondary control circuit 3 on the automobile body 1. Referring to fig. 3, the primary circuit 2 of the frequency converter includes three-phase live wires L1, L2, and L3, an incoming line breaker QF1, a primary circuit outgoing live wire L11, a motor M, a frequency converter VVVF, a reactor L, and an isolation switch QA1, where the three-phase live wires L1, L2, and L3 are connected to an input end of the frequency converter VVVF through an incoming line breaker QF1, three-phase live wires U, V and W are led out from output ports U1, V1, and W1 of the frequency converter VVVF, the three-phase live wires U, V and W are connected to the motor M through the reactor L and the isolation switch QA1 in sequence, and two ends of the primary circuit outgoing live wire L11 are connected to the live wire L1 and the secondary control circuit 3, respectively. The secondary control loop 3 is positioned on one side of the vehicle body 1, and the frequency converter VVVF is positioned on one side of the vehicle body 1 adjacent to the secondary control loop 3. The frequency converter primary loop 2 is directly connected to a fault circuit (not shown in the figure) to play an alternative role, and the secondary control loop 3 is used for enhancing the regulation and control effect on the fault circuit and the frequency converter primary loop 2. The main loop outgoing live wire L11 represents the live wire (because the control loop adopts AC220V voltage) led from the primary loop 2 of the frequency converter to the secondary control loop 3, N represents the neutral wire of the control loop, and the front end L11 of the secondary control loop 3 in fig. 4 is marked to indicate that the live wire is led from the main loop outgoing live wire L11 with arrows in fig. 3.
Referring to fig. 4, the secondary control loop 3 includes a power-on/restart circuit 3.2, the power-on/restart circuit 3.2 includes a 6 th terminal X1:6 of an X1 terminal row of a secondary circuit control board, a 7 th terminal X1:7 of an X1 terminal row of the secondary circuit control board, a stop button SB0, an 8 th terminal X1:8 of an X1 terminal row of the secondary circuit control board, a 9 th terminal X1:9 of an X1 terminal row of the secondary circuit control board, a start button SBC, a first normal open point KA1-1 of a relay KA1, a 10 th terminal X8: 10 of an X1 terminal row of the secondary circuit control board, and a relay KA1, a 6 th terminal X1:6 of an X1 terminal row of the secondary circuit control board, a stop button SB0, a 7 th terminal X42: 7 of an X3984 terminal row of the secondary circuit control board, and a 7 th terminal X468: 7 of the X468 terminal row of the secondary circuit control board, The starting button SBC, a 9 th terminal X1:9 of an X1 terminal row of a secondary circuit control board, a 10 th terminal X1:10 of an X1 terminal row of the secondary circuit control board and a relay KA1 are sequentially connected in series, the stopping button SB0 is connected with a main circuit leading-out live wire L11 through an incoming line breaker QF1, the relay KA1 is connected with a zero line N, and a first normally-open point KA1-1 of the relay KA1 is connected with the starting button SBC in parallel. The starting-up/restarting circuit 3.2 further comprises a starting-up lamp HR1, one end of the starting-up lamp HR1 is connected with the 10 th terminal X1:10 of the X1 terminal row of the secondary circuit control board, and the other end of the starting-up lamp HR1 is connected with a zero line N. The start/restart circuit 3.2 is used for starting and stopping the motor M, and can realize the start function of the motor M, and the start lamp HR1 is turned on, so that the device is indicated to be in the running state. If the device is shut down, in the open state, the power-on lamp HR1 is not on.
The secondary control loop 3 further comprises a switching-off circuit 3.1, the switching-off circuit 3.1 comprises a third pair of normally-closed points KA1-3 of a relay KA1, a 5 th terminal X1:5 of an X1 terminal row of a secondary loop control board and a stop lamp HG1 which are sequentially connected in series, one end of the third pair of normally-closed points KA1-3 of the relay KA1 is connected with a main loop leading-out live wire L11 through an incoming line breaker QF1 and is connected with a stop button SB0, the other end of the third pair of normally-closed points KA1-3 of the relay KA1 is connected with the stop lamp HG1 through a 5 th terminal X1:5 of the X1 terminal row of the secondary loop control board, and the stop lamp HG1 is connected with a zero line N. The opening circuit 3.1 indicates that the device is in an opening state, if the device is in operation, the closing point of the third pair of normally-closed points KA1-3 of the relay KA1 is changed into an opening point, and the stop lamp HG1 is not on, namely, the electrical device is in a closing state.
The secondary control loop 3 also comprises a frequency conversion fault circuit 3.3, the frequency conversion fault circuit 3.3 comprises a frequency converter first relay output point NO, a frequency converter second relay output point COM, an 11 th terminal X1:11 of an X1 terminal row of a secondary loop control board and a relay KA2, one end of a first normally-closed point KA2-1 of the relay KA2 is connected with a main loop leading-out live wire L11 through an incoming line breaker QF1, the other end of the first normally-closed point KA2-1 of the relay KA2 is connected with a stop button SB0, one end of the first normally-closed point KA2-1 of the relay KA2 is connected with a third normally-closed point KA1-3 of the relay KA1, one end of the frequency converter first relay output point NO is respectively connected with the first normally-closed point KA2-1 and the incoming line breaker QF1 of the relay KA2 and is connected with a main loop leading-out live wire L11 through the incoming line breaker 1, the output point COM of the second relay of the frequency converter is connected with the 11 th terminal X1:11 of the X1 terminal row of the secondary circuit control board, the 11 th terminal X1:11 of the X1 terminal row of the secondary circuit control board is connected with one end of a relay KA2, the other end of the relay KA2 is connected with a zero line N, and the frequency converter VVVF is respectively provided with a3 rd terminal XR03 of an interface of a frequency converter I/O board analog quantity XR03 part: 3 and 2 nd terminal XR03 of the interface of the converter I/O board analog XR03 part: 2, the terminal XR 03: 3 to the first output relay point NO, said terminal XR 03: 2 is connected with a second output relay point COM of the frequency converter. The terminals XRO3:3 correspond to NO terminals, and the terminals XRO3:2 correspond to COM terminals, and are a pair, and the pair is used for outputting contacts when a fault is detected by a frequency converter VVVF operation body and used as a frequency conversion fault signal for interlocking shutdown. The frequency conversion fault circuit 3.3 further comprises a fault lamp HY1, one end of the fault lamp HY1 is connected with the 11 th terminal X1:11 of the X1 terminal row of the secondary circuit control board, and the other end of the fault lamp HY1 is connected with the relay KA2 and the zero line N respectively. Referring to fig. 6, two ends of the second pair of normally closed points KA2-2 of the relay KA2 are respectively connected with the distributed control system DCS. In the frequency conversion fault circuit 3.3, the first relay output point NO of the frequency converter and the second relay output point COM of the frequency converter are a pair of output relay points of the VVVF of the frequency converter, when the VVVF of the frequency converter is in fault, a fault lamp HY1 is turned on to indicate that the VVVF of the frequency converter is in fault, after a coil of the relay KA2 is powered on, the first normally-off point KA2-1 of the relay KA2 is stopped by a closed point-to-open point interlocking mode, and the second normally-off point KA2-2 of the relay KA2 transmits a signal to the distributed control system DCS to indicate that the VVVF of the frequency converter is in fault. Because the first relay output point NO of the frequency converter and the second relay output point COM of the frequency converter represent a pair of normally open output points of the relay KA2, the normally open output points are two line heads, one end of the two line heads is marked with NO, and the other end of the two line heads is marked with COM, the pair of relay output points can be set to be normally open points or normally closed points through parameters of the frequency converter, and therefore, the normally open points or the normally closed points are not clearly marked like the second normally open point KA1-2 of the relay KA1 and the second normally open point KA3-2 of the relay KA 3.
Referring to fig. 4, the secondary control circuit 3 further includes a brown-out circuit 3.4, the brown-out circuit 3.4 includes a brown-out relay FS-ZD, a terminal 2/8 of the brown-out relay FS-ZD is connected with a main loop outgoing live wire L11 through an incoming line breaker QF1, a terminal 3/9 of the brown-out relay FS-ZD is connected with a zero line N, and normally-open terminals 6/12 and 5/11 of the brown-out relay FS-ZD are respectively connected with two ends of a first normally-open point KA1-1 of a relay KA 1. When the condition is met and the secondary control loop 3 is in a power failure state, the normally open terminals 6/12 and 5/11 of the power failure relay FS-ZD are changed from the open point to the closed point, and the motor M operates again like a manual push of the start button SBC.
The secondary control loop 3 further comprises a DCS interlocking shutdown circuit 3.6, the DCS interlocking shutdown circuit 3.6 comprises a first control point DCS-1 and a relay KA4 of a distributed control system DCS, one end of the first control point DCS-1 of the distributed control system DCS is connected with a leading-out live wire L11 of the main loop through an incoming line breaker QF1, the other end of the first control point DCS-1 of the distributed control system DCS is connected with one end of a relay KA4, the other end of the relay KA4 is connected with a zero line N, and two ends of a first normally-closed point KA4-1 of the relay KA4 are respectively connected with a 10 th terminal X1:10 and a relay KA1 of an X1 terminal row of a secondary loop control board; the frequency converter VVVF is respectively provided with a 6 th terminal XAI of an interface of a frequency converter I/O board analog quantity XAI part: 6 and 7 th terminal XAI of the interface of the converter I/O board analog to digital XAI part: 7, the frequency converter VVVF is provided with a voltage stabilizing circuit connected with a terminal XAI:6, the frequency converter VVVF is provided with a terminal a12+ connected to the terminal XAI:7, the terminals A12-connected with each other, the terminals A12+ and A12-connected with the distributed control system DCS, introducing 4-20mA analog quantity signals, the terminal XAI:6 corresponding to the AI2+ terminal, and the terminal XAI:7 corresponding to the AI 2-terminal, being a pair, having the function of accessing the 4-20mA analog quantity signals, having the function of speed regulation, and determining the output frequency of the frequency converter according to the given quantity of 4-20mA, thereby achieving the purpose of speed regulation. The frequency converter VVVF is respectively provided with a3 rd terminal XA0 of an interface of a frequency converter I/O board analog quantity XA0 part: 3 and 4 th terminal XA0 of interface of converter I/O board analog quantity XA0 part: 4, the frequency converter VVVF is provided with a connection terminal XA0:3, and the frequency converter VVVF is provided with a terminal a02 connected with the terminal XA0: 4, the terminals a02 and AGND are connected with the distributed control system DCS, a 4-20mA analog quantity signal is fed back to the distributed control system DCS, the terminals XAO:3 correspond to the AO2 terminals, and the terminals XAO:4 correspond to the AGND terminals, which are a pair, and are used for outputting a 4-20mA signal to the distributed control system DCS as a feedback signal of the running current or the rotating speed of the motor M. When the distributed control system DCS needs to be electrically stopped, the first control point DCS-1 of the distributed control system DCS is changed from an open point to a closed point, then the relay KA4 acts, the contact point of the first normally closed point KA4-1 of the relay KA4 is changed from the closed point to the open point, the relay KA1 is powered off, and therefore the motor M is stopped.
The power-on/restart circuit 3.2 further comprises a power lamp HW1, one end of the power lamp HW1 is connected with a main loop outgoing live wire L11, and the other end of the power lamp HW1 is connected with a zero wire N.
The frequency converter primary loop 2 further comprises a secondary fuse FU, and two ends of the secondary fuse FU are connected with the incoming line breaker QF1 and the frequency converter VVVF input end respectively.
The switching vehicle of the mobile frequency conversion loop can be used as a mobile frequency conversion distribution loop, and a frequency converter in the replacement device shown in the figure 1 is selected according to the working condition of heavy-load application according to a motor with the maximum capacity of a distribution room. When the capacity of the motor is lower than the rated capacity of the frequency converter, the frequency converter can be set according to the motor parameters, and the loop can be continuously kept to operate in an energy-saving mode in a way of pulling a trolley by a large horse.
The up-converter of the mobile switching vehicle is connected and debugged according to standard control schematic diagrams of the interlocking of the electric or instrument, the feedback of each operation information and the like. The control mode of converter also sets up the parameter in advance and the trial run according to standard schematic diagram, and the trial run is normal back, places the position of the work of no hindrance in the distribution room with replacement device, and regular overhaul, clean.
The replacement device reserves a primary input and output cable and a secondary wiring terminal block. The primary input cable is connected to the output side of the air switch of the circuit in a replacement mode when the original frequency conversion circuit fails, and the primary output cable is directly connected to the upper end of the motor cable. The outer side of the secondary wiring terminal block is connected with an operation column start-stop signal, an instrument 4-20mA speed regulation signal, an instrument interlocking start-stop signal, a rotating speed or current feedback signal and an equipment running state signal lamp of the original circuit through a control cable according to actual conditions, so that the purpose of replacing the variable frequency circuit is achieved.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Those not described in detail in this specification are within the skill of the art.
Claims (10)
1. The utility model provides a portable frequency conversion return circuit switching car which characterized in that: the device comprises a vehicle body (1) with universal casters at the bottom, wherein a frequency converter primary loop (2) and a secondary control loop (3) are arranged on the vehicle body (1), the frequency converter primary loop (2) comprises three-phase live wires L1, L2 and L3, an incoming line breaker QF1, a main loop leading-out live wire L11, a motor M, a frequency converter VVVVF, an electric reactor L and an isolation knife switch QA1, the three-phase live wires L1, L2 and L3 are connected with the input end of the frequency converter VVVF through an incoming line breaker QF1, three-phase live wires U, V and W are led out from the ports of the frequency converter VVVF output end U1, V1 and W1, the three-phase live wires U, V and W are connected with the motor M through the electric reactor L and the isolation knife switch QA1 in sequence, and two ends of the main loop leading-out live wire L11 are connected with a live wire L1 and; the secondary control loop (3) comprises a starting/restarting circuit (3.2), the starting/restarting circuit (3.2) comprises a 6 th terminal X1:6 of an X1 terminal row of a secondary loop control board, a 7 th terminal X1:7 of an X1 terminal row of the secondary loop control board, a stop button SB0, an 8 th terminal X1:8 of an X1 terminal row of the secondary loop control board, a 9 th terminal X1:9 of an X1 terminal row of the secondary loop control board, a start button SBC, a first normal open point KA1-1 of a relay KA1, a 10 th terminal X1:10 of an X1 terminal row of the secondary loop control board and a relay KA1, a 6 th terminal X1:6 of an X1 terminal row of the secondary loop control board, a stop button SB0, a 7 th terminal X42: 7 of an X3984 terminal row of the secondary loop control board, a 7 th terminal X468: 468 of the secondary loop terminal row of the secondary loop control board, The starting button SBC, a 9 th terminal X1:9 of an X1 terminal row of a secondary circuit control board, a 10 th terminal X1:10 of an X1 terminal row of the secondary circuit control board and a relay KA1 are sequentially connected in series, the stopping button SB0 is connected with a main circuit leading-out live wire L11 through an incoming line breaker QF1, the relay KA1 is connected with a zero line N, and a first normally-open point KA1-1 of the relay KA1 is connected with the starting button SBC in parallel.
2. The mobile frequency conversion loop switching cart according to claim 1, wherein: the secondary control loop (3) further comprises a switching-off circuit (3.1), the switching-off circuit (3.1) comprises a third pair of normally-closed points KA1-3 of a relay KA1, a 5 th terminal X1:5 of an X1 terminal row of a secondary loop control board and a stop lamp HG1 which are sequentially connected in series, one end of the third pair of normally-closed points KA1-3 of the relay KA1 is connected with a main loop leading-out live wire L11 through an incoming line breaker QF1 and is connected with a stop button SB0, the other end of the third pair of normally-closed points KA1-3 of the relay KA1 is connected with the stop lamp HG1 through a 5 th terminal X1:5 of the X1 terminal row of the secondary loop control board, and the stop lamp HG1 is connected with a neutral line N.
3. The mobile frequency conversion loop switching cart according to claim 2, wherein: secondary control circuit (3) still include frequency conversion operating circuit (3.5), frequency conversion operating circuit (3.5) include relay KA 1's second normally open point KA1-2 and relay KA3, relay KA 1's second normally open point KA1-2 one end is drawn forth live wire L11 through inlet wire circuit breaker QF1 and main return circuit and is linked to each other, relay KA 1's second normally open point KA 1-2's the other end links to each other with relay KA 3's one end, relay KA 3's the other end links to each other with zero line N, be equipped with 3 rd terminal XA0 of the interface of converter I/O board analog quantity XA0 part on the converter VVVVF respectively: 3 and 4 th terminal XD24 of the interface of the analog quantity XD24 part of the I/O board of the frequency converter: 4, the frequency converter VVVF is provided with a connection terminal XA0:3, and a terminal DI1 connected with the frequency converter VVVF is provided with a terminal XD24:4, and the terminal DI1 and the terminal +24V are respectively connected with two ends of a first normally open point KA3-1 of the relay KA 3.
4. The mobile frequency conversion loop switching cart according to claim 3, wherein: the secondary control loop (3) further comprises a frequency conversion fault circuit (3.3), the frequency conversion fault circuit (3.3) comprises a first relay output point NO of a frequency converter, a second relay output point COM of the frequency converter, an 11 th terminal X1:11 of an X1 terminal row of a secondary loop control board and a relay KA2, one end of a first normally-closed point KA2-1 of the relay KA2 is connected with a main loop leading-out live wire L11 through an incoming line breaker QF1, the other end of the first normally-closed point KA2-1 of the relay KA2 is connected with a stop button SB0, the first normally-closed point KA2-1 of the relay KA2 is connected with a third normally-closed point KA1-3 of the relay KA1, one end of the first relay output point NO of the frequency converter is respectively connected with the first normally-closed point KA2-1 and the incoming line breaker QF1 of the relay KA2, and is connected with a main loop leading-out live wire 11 through the incoming line breaker 1, the output point COM of the second relay of the frequency converter is connected with the 11 th terminal X1:11 of the X1 terminal row of the secondary circuit control board, the 11 th terminal X1:11 of the X1 terminal row of the secondary circuit control board is connected with one end of a relay KA2, the other end of the relay KA2 is connected with a zero line N, and the frequency converter VVVF is respectively provided with a3 rd terminal XR03 of an interface of a frequency converter I/O board analog quantity XR03 part: 3 and 2 nd terminal XR03 of the interface of the converter I/O board analog XR03 part: 2, the terminal XR 03: 3 to the first output relay point NO, said terminal XR 03: 2 is connected with a second output relay point COM of the frequency converter.
5. The mobile frequency conversion loop switching cart according to claim 4, wherein: the secondary control circuit (3) further comprises a blackout circuit (3.4), the blackout circuit (3.4) comprises a blackout relay FS-ZD, a terminal 2/8 of the blackout relay FS-ZD is connected with a main loop leading-out live wire L11 through an incoming line breaker QF1, a terminal 3/9 of the blackout relay FS-ZD is connected with a zero line N, and normally open terminals 6/12 and 5/11 of the blackout relay FS-ZD are respectively connected with two ends of a first pair of normally open points KA1-1 of the relay KA 1.
6. The mobile frequency conversion loop switching cart according to claim 5, wherein: the secondary control loop (3) further comprises a DCS interlocking shutdown circuit (3.6), the DCS interlocking shutdown circuit (3.6) comprises a first control point DCS-1 and a relay KA4 of a distributed control system DCS, one end of the first control point DCS-1 of the distributed control system DCS is connected with a main loop leading-out live wire L11 through an incoming line breaker QF1, the other end of the first control point DCS-1 of the distributed control system DCS is connected with one end of a relay KA4, the other end of the relay KA4 is connected with a zero line N, and two ends of a first normally-off point KA4-1 of the relay KA4 are respectively connected with a 10 th terminal X1:10 and a relay KA1 of an X1 terminal row of a secondary loop control board; the frequency converter VVVF is respectively provided with a 6 th terminal XAI of an interface of a frequency converter I/O board analog quantity XAI part: 6 and 7 th terminal XAI of the interface of the converter I/O board analog to digital XAI part: 7, the frequency converter VVVF is provided with a voltage stabilizing circuit connected with a terminal XAI:6, the frequency converter VVVF is provided with a terminal a12+ connected to the terminal XAI:7, the terminals A12-connected with each other, the terminals A12+ and A12-connected with the distributed control system DCS, introducing 4-20mA analog quantity signals, and the frequency converter VVVF is respectively provided with A3 rd terminal XA0 of an interface of a frequency converter I/O board analog quantity XA0 part: 3 and 4 th terminal XA0 of interface of converter I/O board analog quantity XA0 part: 4, the frequency converter VVVF is provided with a connection terminal XA0:3, and the frequency converter VVVF is provided with a terminal a02 connected with the terminal XA0: 4, the terminal A02 and the terminal AGND are connected with the distributed control system DCS, and a 4-20mA analog quantity signal is fed back to the distributed control system DCS.
7. The mobile frequency conversion loop switching cart according to claim 6, wherein: and two ends of a second normally open point KA3-2 of the relay KA3 are respectively connected with the distributed control system DCS.
8. The mobile frequency conversion loop switching cart according to claim 7, wherein: and two ends of a second normally closed point KA2-2 of the relay KA2 are respectively connected with the distributed control system DCS.
9. The mobile frequency conversion loop switching cart according to claim 8, wherein: the starting-up/restarting circuit (3.2) further comprises a starting-up lamp HR1, one end of the starting-up lamp HR1 is connected with the 10 th terminal X1:10 of the X1 terminal row of the secondary circuit control board, and the other end of the starting-up lamp HR1 is connected with a zero line N; the frequency conversion fault circuit (3.3) further comprises a fault lamp HY1, one end of the fault lamp HY1 is connected with the 11 th terminal X1:11 of an X1 terminal row of the secondary circuit control board, and the other end of the fault lamp HY1 is connected with a relay KA2 and a zero line N respectively; the power-on/restart circuit (3.2) further comprises a power supply lamp HW1, one end of the power supply lamp HW1 is connected with a main loop leading-out live wire L11, and the other end of the power supply lamp HW1 is connected with a zero wire N.
10. The mobile frequency conversion loop switching cart according to claim 9, wherein: the primary loop (2) of the frequency converter further comprises a secondary fuse FU, and two ends of the secondary fuse FU are respectively connected with the incoming line breaker QF1 and the input end of the frequency converter VVVF; the secondary control loop (3) is located on one side of the vehicle body (1), and the frequency converter VVVF is located on one side, adjacent to the secondary control loop (3), of the vehicle body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922244854.5U CN211701903U (en) | 2019-12-13 | 2019-12-13 | Mobile frequency conversion loop switching vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922244854.5U CN211701903U (en) | 2019-12-13 | 2019-12-13 | Mobile frequency conversion loop switching vehicle |
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| CN211701903U true CN211701903U (en) | 2020-10-16 |
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| CN201922244854.5U Active CN211701903U (en) | 2019-12-13 | 2019-12-13 | Mobile frequency conversion loop switching vehicle |
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| CN (1) | CN211701903U (en) |
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Denomination of utility model: Mobile frequency conversion circuit switching vehicle Effective date of registration: 20220124 Granted publication date: 20201016 Pledgee: Qingshan Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: WUHAN JIAN'AN PETROCHEMICAL ENGINEERING Co.,Ltd. Registration number: Y2022420000028 |
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Granted publication date: 20201016 Pledgee: Qingshan Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: WUHAN JIAN'AN PETROCHEMICAL ENGINEERING Co.,Ltd. Registration number: Y2022420000028 |