CN109519361B - Controller of one-star triangle fire-fighting water pump - Google Patents
Controller of one-star triangle fire-fighting water pump Download PDFInfo
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- CN109519361B CN109519361B CN201810680438.7A CN201810680438A CN109519361B CN 109519361 B CN109519361 B CN 109519361B CN 201810680438 A CN201810680438 A CN 201810680438A CN 109519361 B CN109519361 B CN 109519361B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 17
- 238000001514 detection method Methods 0.000 claims abstract description 136
- 230000003750 conditioning effect Effects 0.000 claims abstract description 60
- 238000002955 isolation Methods 0.000 claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000030279 gene silencing Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000000007 visual effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The application discloses a controller of a star-delta fire pump, which comprises a controller circuit, a first current detection signal conditioning circuit, a first current detection protection circuit, a second current detection signal conditioning circuit, a second current detection protection circuit, a voltage detection signal conditioning circuit, a voltage detection protection circuit, an external signal input isolation circuit, a key circuit, a relay output circuit, a display circuit, an indicator lamp circuit, a buzzer circuit and a control panel, wherein the first current detection signal conditioning circuit is connected with the first current detection protection circuit, the second current detection signal conditioning circuit is connected with the second current detection protection circuit, and the first current detection protection circuit, the second current detection protection circuit, the voltage detection protection circuit, the external signal input isolation circuit, the key circuit, the relay output circuit, the display circuit, the indicator lamp circuit, the buzzer circuit and the control panel are respectively connected with the controller circuit.
Description
Technical Field
The application relates to the field of fire-fighting water pump controllers, in particular to a controller of a one-star triangle fire-fighting water pump.
Background
The traditional fire pump is generally operated in a single manual control operation or a single automatic control operation, the operation mode is quite single in selection, the functions are quite single, the operation mode cannot be intelligently selected according to the high and low conditions of the water level, the wheel throwing operation cannot be performed according to the change condition of the water level, the functions of fault indication and audible and visual alarm are not provided, the power consumption of the fire pump in the working process is high, the safety performance is poor, and the intelligent degree and the automation degree are low. Therefore, the inventor develops a fire pump with two fire pumps being standby each other, having a manual control or automatic control mode selection function, when an operator adopts manual control operation, the button can control the start and stop of two fire pump devices, and the function of wheel throwing work is provided, any fire pump can be started, when the working pump breaks down, the standby pump is delayed to automatically put into work, when the water level of the water pump pool is low, the pump can be automatically stopped, the water shortage protection function is provided, meanwhile, fault signals and start and stop signals are fed back to the fire center external control module, and an audible and visual alarm is provided.
Disclosure of Invention
In order to solve the above problems, the present application provides a controller for a star delta fire pump, which is characterized by comprising a controller circuit, a first current detection signal conditioning circuit, a first current detection protection circuit, a second current detection signal conditioning circuit, a second current detection protection circuit, a voltage detection signal conditioning circuit, a voltage detection protection circuit, an external signal input isolation circuit, a key circuit, a relay output circuit, a display circuit, an indicator light circuit, a buzzer circuit and a control panel;
the input ends of the first current detection signal conditioning circuit and the second current detection signal conditioning circuit are used for being connected with a current transformer, the output end of the first current detection signal conditioning circuit is connected with a first signal input port of the controller circuit through the first current detection protection circuit, and the output end of the second current detection signal conditioning circuit is connected with a first signal input port of the controller circuit through the second current detection protection circuit;
the input end of the voltage detection signal conditioning circuit is used for being connected with the input end of the three-phase alternating voltage, and the output end of the voltage detection signal conditioning circuit is connected with the second signal input port of the controller circuit through the voltage detection protection circuit;
the external signal is connected with a third signal input port of the controller circuit through the external signal input isolation circuit;
the control panel is provided with keys, and the keys on the control panel are connected with a fourth signal input port of the controller circuit through the key circuit;
the first signal output port of the controller is connected with the relay output circuit, the relay output circuit comprises a first relay control circuit, a second relay control circuit, a third relay control circuit, a fourth relay control circuit, a fifth relay control circuit and a sixth relay control circuit, the first relay control circuit is used for controlling the triangular state signal output of the main motor, the second relay control circuit is used for controlling the triangular state signal output of the standby motor, the third relay control circuit is used for controlling the overload working state signal output of the main motor, the fourth relay control circuit is used for controlling the overload working state signal output of the standby motor, the fifth relay control circuit is used for controlling the star state signal output of the main motor, the sixth relay control circuit is used for controlling the star state signal output of the standby motor, and the fifth relay control circuit is used for controlling the triangular state signal output of the main motor;
the output end of the relay output circuit is connected with a fifth signal input port of the controller circuit;
a second signal output port of the controller is connected with the display circuit;
and a third signal output port of the controller is connected with the buzzer circuit.
Further, the first current detection signal conditioning circuit and the second current detection signal conditioning circuit are used for converting signals acquired by the current transformer into voltage signals, and the current detection protection circuit is used for clamping the converted voltage signals.
Further, the voltage detection signal conditioning circuit is used for reducing the input three-phase alternating voltage and converting the three-phase alternating voltage into a voltage signal which can be used for detection, and the voltage detection protection circuit is used for clamping the converted voltage signal.
Further, the external signal includes: the remote control system comprises a first remote pulse starting signal, a second remote pulse starting signal, a first remote pulse stopping signal, a second remote pulse stopping signal, a first continuous start-stop active signal, a second continuous start-stop active signal, a first continuous start-stop passive signal, a second continuous start-stop passive signal, a main motor overload detection signal, a standby motor overload detection signal, a main motor operation detection, a standby motor operation detection, a first fire valve detection signal, a second fire valve detection signal, a fire hydrant signal and a water shortage signal, wherein an external signal input isolation circuit comprises an optical coupler and is used for isolating the input of an external signal.
Further, the keys on the control panel include: the device comprises a silencing key, a manual key, an automatic key, a main motor high-speed starting key, a main motor stopping key, a standby motor high-speed starting key and a standby motor stopping key.
Further, the relay output circuit further comprises a seventh relay control circuit, an eighth relay control circuit, a ninth relay control circuit and a tenth relay control circuit, wherein the seventh relay control circuit is used for controlling the first fire-fighting linkage signal output, the eighth relay control circuit is used for controlling the second fire-fighting linkage signal output, the ninth relay control circuit is used for controlling the manual/automatic signal output, and the tenth relay control circuit is used for controlling the power failure signal output.
Further, the display circuit comprises a nixie tube display circuit and an indicator lamp circuit, wherein the nixie tube display circuit is used for displaying the running state, the operation prompt and the detection values of current and voltage, and the indicator lamp circuit comprises a normal power indicator lamp, a power failure indicator lamp, a manual indicator lamp, an automatic indicator lamp, a first linkage indicator lamp, a second linkage indicator lamp, a main motor low-speed running indicator lamp, a standby motor low-speed running indicator lamp, a main motor high-speed running indicator lamp, a standby motor high-speed running indicator lamp, a main motor overload indicator lamp, a standby motor overload indicator lamp, a main motor stop indicator lamp and a standby motor stop indicator lamp.
Further, the first current detection signal conditioning circuit, the second current detection signal conditioning circuit, the first current detection protection circuit, the second current detection protection circuit, the voltage detection signal conditioning circuit, the voltage detection protection circuit, the external signal input isolation circuit and the relay output circuit are arranged on a main circuit board, the controller circuit, the key circuit, the display circuit, the indicator light circuit and the buzzer circuit are arranged on a display circuit board, and the main circuit board is connected with the display circuit board through a contact pin.
Further, the current transformer sensing signal, the input end signal of the three-phase alternating voltage and the external signal are input to the main circuit board through an external input signal terminal.
The application has the beneficial effects that:
(1) The miniature design is adopted, the control precision is high, the multifunctional, the standard (GB 16806-2006) is completely executed, the method is simple and practical, the installation is convenient, the traditional relay control mode is completely replaced, the assembly efficiency is greatly improved in a program, and the cost of labor, wire box shell frames and the like is saved.
(2) The three-phase alternating voltage and the three-phase alternating current of the controlled equipment are detected in real time in a rolling way, and the intelligent fire pump has the audible and visual alarm and protection functions of overvoltage, undervoltage, phase failure and overload, and has the passive feedback output of power failure and the overload feedback output of the controlled equipment, so that the power failure can be effectively detected, related personnel can be timely reminded to process, and the safe operation of the fire pump can be effectively ensured.
(3) The automatic, manual and remote start-stop control is carried out on the controlled equipment of the fire-fighting waterproof pump in real time, the continuous start-stop control of the fire-fighting remote and on-site active DC24V direct current power supply can be provided, the pulse start-stop control of the fire-fighting remote active DC24V direct current power supply is carried out, and the start-stop control of the fire-fighting remote passive signal is carried out; the fire-fighting control system also has fire-fighting linkage feedback output, and starts and stops passive signal feedback output; the double-motor control device can meet and adapt to the requirements of linkage control of various fire-fighting equipment.
Drawings
FIG. 1 is a schematic diagram of a controller for a star-delta fire pump according to the present application;
fig. 2 is a schematic structural diagram of a first current detection signal conditioning circuit or a first current detection signal conditioning circuit of a controller of a star delta fire pump according to the present application;
FIG. 3 is a schematic diagram of a current detection protection circuit of a controller of a star delta fire pump according to the present application;
FIG. 4 is a block diagram of a signal input isolation circuit of a controller of a star delta fire pump according to the present application;
FIG. 5 is a schematic diagram of a first relay controller circuit or a second relay controller circuit of a controller for a star delta fire pump according to the present application;
FIG. 6 is a schematic diagram of any one of the third to sixth relay control circuits of the controller for a star delta fire pump according to the present application;
FIG. 7 is a schematic diagram of a control panel of a controller for a star delta fire pump according to the present application.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present application, a specific embodiment of the present application will be described with reference to the accompanying drawings.
The controller of the one-star triangle fire pump shown in fig. 1 is characterized by comprising a controller circuit, a first current detection signal conditioning circuit, a first current detection protection circuit, a second current detection signal conditioning circuit, a second current detection protection circuit, a voltage detection signal conditioning circuit, a voltage detection protection circuit, an external signal input isolation circuit, a key circuit, a relay output circuit, a display circuit, an indicator light circuit, a buzzer circuit and a control panel;
the input ends of the first current detection signal conditioning circuit and the second current detection signal conditioning circuit are used for being connected with a current transformer, the output end of the first current detection signal conditioning circuit is connected with a first signal input port of the controller circuit through the first current detection protection circuit, and the output end of the second current detection signal conditioning circuit is connected with a first signal input port of the controller circuit through the second current detection protection circuit;
the input end of the voltage detection signal conditioning circuit is used for being connected with the input end of the three-phase alternating voltage, and the output end of the voltage detection signal conditioning circuit is connected with the second signal input port of the controller circuit through the voltage detection protection circuit;
the external signal is connected with a third signal input port of the controller circuit through the external signal input isolation circuit;
the control panel is provided with keys, and the keys on the control panel are connected with a fourth signal input port of the controller circuit through the key circuit;
the first signal output port of the controller is connected with the relay output circuit, the relay output circuit comprises a first relay control circuit, a second relay control circuit, a third relay control circuit, a fourth relay control circuit, a fifth relay control circuit and a sixth relay control circuit, the first relay control circuit is used for controlling the triangular state signal output of the main motor, the second relay control circuit is used for controlling the triangular state signal output of the standby motor, the third relay control circuit is used for controlling the overload working state signal output of the main motor, the fourth relay control circuit is used for controlling the overload working state signal output of the standby motor, the fifth relay control circuit is used for controlling the star state signal output of the main motor, the sixth relay control circuit is used for controlling the star state signal output of the standby motor, and the fifth relay control circuit is used for controlling the triangular state signal output of the main motor;
the output end of the relay output circuit is connected with a fifth signal input port of the controller circuit;
a second signal output port of the controller is connected with the display circuit;
and a third signal output port of the controller is connected with the buzzer circuit.
Further, the first current detection signal conditioning circuit and the second current detection signal conditioning circuit are used for converting signals acquired by the current transformers into voltage signals, clamping the converted voltage signals, setting 6 current transformers, and respectively installing the current transformers at each phase of two three-phase alternating current input lines for detecting currents of each phase of the two three-phase alternating current input lines.
The first current detection signal conditioning circuit and the second current detection signal conditioning circuit have structures as shown in fig. 2, and comprise a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first capacitor C1, a second capacitor C2 and a first operational amplifier U1, wherein a current transformer is connected to two ends of the first resistor R1 through a slot, the first end of the first resistor R1 is connected with the first end of the second resistor R2, the second end of the first resistor R1 is connected with the first end of the third resistor R3, the second end of the second resistor R2 is respectively connected with the first end of the first capacitor C1, the first end of the fourth resistor R4 and the positive input end of the first operational amplifier U1, the second end of the first capacitor C1 and the second end of the fourth resistor R4 are connected with a reference voltage Vref, the second end of the third resistor R3 is respectively connected with the first end of the second capacitor C2, the first end of the fifth resistor R5 and the negative end of the first operational amplifier U1, and the second end of the second resistor R2 is connected with the second end of the second operational amplifier U1 as an output end of the first signal conditioning circuit.
The input end of the voltage detection signal conditioning circuit is connected with the input of the three-phase alternating current power supply, and the output end of the voltage detection signal conditioning circuit is connected with the second signal input port of the controller circuit through the voltage detection protection circuit.
The voltage detection signal conditioning circuit is used for reducing the input three-phase alternating current voltage and converting the three-phase alternating current voltage into a voltage signal which can be used for detection. The voltage detection signal conditioning circuit is shown in fig. 3, and includes a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R113, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a third capacitor C3, a fourth capacitor C4, and a second operational amplifier U2, wherein a series line of the third phase ac power supply is connected to a first end of the fourteenth resistor R14 through a series line of the sixth resistor R6, the seventh resistor R7, the eighth resistor R8, and the ninth resistor R9, an N-phase of the third phase ac power supply is connected to a first end of the fifteenth resistor R15 through a series line of the tenth resistor R10, the eleventh resistor R11, the twelfth resistor R12, and the thirteenth resistor R113, a second end of the fourteenth resistor R14 is connected to a first end of the third capacitor C3, a first end of the sixteenth resistor R16 and a second operational amplifier U2, a first end of the sixteenth resistor R16 and a second end of the fourth operational amplifier U2 are connected to a first end of the fourth capacitor C4, and a sixteenth end of the fourth resistor R16 is connected to a second end of the fourth resistor R16, and a sixteenth signal is amplified by a fourth end of the fourth resistor R16 is connected to a fourth end of the fourth resistor R16, and a negative end of the fourth resistor is connected to the fourth end of the fourth resistor R16.
The first current detection protection circuit and the second current detection protection circuit are used for clamping the converted voltage signal, the structure is shown in fig. 2, the circuit comprises a seventeenth resistor R17, a fifth capacitor C5 and a double diode U3, the double diode U3 comprises a first diode and a second diode, the positive electrode of the first diode is used as the first end of the double diode U3, the negative electrode of the second diode is used as the second end of the diode U3, and the negative electrode of the first diode and the positive electrode of the second diode are connected to be used as the third end of the double diode U3; the output end of the current detection signal conditioning circuit or the voltage detection signal conditioning circuit is connected with the first end of a seventeenth resistor R17, the second end of the seventeenth resistor R17 is connected with the first end of a fifth capacitor C5 and the third end of a double diode U3 to serve as the output end of the current detection protection circuit or the voltage detection protection circuit, the second end of the fifth capacitor C5 and the first end of the double diode U3 are grounded, and the second end of the double diode U3 is connected with a +3.3V direct current power supply.
The external signal is connected with a third signal input port of the controller circuit through the external signal input isolation circuit. The external signals include: the remote control system comprises a first remote pulse starting signal, a second remote pulse starting signal, a first remote pulse stopping signal, a second remote pulse stopping signal, a first continuous start-stop active signal, a second continuous start-stop active signal, a first continuous start-stop passive signal, a second continuous start-stop passive signal, a main motor overload detection signal, a standby motor overload detection signal, a main motor operation detection, a standby motor operation detection, a first fire valve detection signal, a second fire valve detection signal, a fire hydrant signal and a water shortage signal, wherein an external signal input isolation circuit comprises an optical coupler and is used for isolating the input of an external signal.
The first remote pulse starting signal, the second remote pulse starting signal, the first remote pulse stopping signal and the second remote pulse stopping signal come from signals outside the control cabinet, consist of DC24V active voltage, are started in a clicking mode, and are stopped in a clicking mode and are sent out by two external buttons.
The first continuous start-stop passive signal and the second continuous start-stop passive signal come from automatic control signals outside the control cabinet, when the controller is connected with the starting loop, the water pump operates, and when the signal is disconnected, the water pump stops.
The first continuous start-stop active signal and the second continuous start-stop active signal are from DC24V direct current signals of a fire control center and are used for forced start in fire control.
The overload detection signal of the main motor and the overload detection signal of the standby motor come from a relay for controlling the overload signal output in a water pump power supply loop, and if the relay is overloaded, an auxiliary normally-closed contact of the relay for controlling the overload signal output becomes a normally-open contact and sends out the motor overload detection signal to a controller.
The main motor operation detection and the standby motor operation detection come from an alternating current contactor in a water pump power supply loop, an initial state of an auxiliary contact of the alternating current contactor is a normally open contact, the alternating current contactor becomes a normally closed contact after working, and a motor operation detection signal is sent to a controller through the auxiliary contact of the alternating current contactor. And if the AC contactor is automatically released in the running process, the controller considers that the AC contactor is faulty, and detects that the automatic released AC contactor sends out a shutdown instruction command and alarms.
The first fire valve detection signal and the second fire valve detection signal are necessary signals for the fire pump to work, the controller detects that the fire valve is not connected and alarms, and the controller cannot start the water pump through manual or automatic signals in any state.
The signal input isolation circuit is used for isolating the input of external signals, and has a structure shown in fig. 5, and comprises an eighteenth resistor R18, a nineteenth resistor R19 and an optocoupler U4, wherein the positive electrode of a light emitting device in the optocoupler U4 is used as the first end of the optocoupler U4, the negative electrode of the light emitting device in the optocoupler U4 is used as the second end of the optocoupler U4, the output end of a receiving device in the optocoupler U4 is used as the fourth end of the optocoupler U4, the input end of the receiving device in the optocoupler U4 is used as the third end of the optocoupler U4, the external signals are input from the first end of the nineteenth resistor R19, the second end of the nineteenth resistor R19 is connected with the first end of the optocoupler U4, the second end of the optocoupler U4 is connected with an external signal ground wire, the third end of the optocoupler U4 is connected with the ground wire of the controller, the third end of the optocoupler U4 is connected with the first end of the eighteenth resistor R18 and is used as the output end of the external signal input isolation circuit, and the second end of the eighteenth resistor R18 is connected with a +5V direct current power supply.
The first signal output port of the controller is connected with the relay output circuit, the relay output circuit comprises a first relay control circuit, a second relay control circuit, a third relay control circuit, a fourth relay control circuit, a fifth relay control circuit and a sixth relay control circuit, the first relay control circuit is used for controlling overload working state signal output of a main motor, the second relay control circuit is used for controlling overload working state signal output of a standby motor, the third relay control circuit is used for controlling star state signal output of the main motor, the fourth motor is used for controlling star state signal output of the standby motor, the fifth relay control circuit is used for controlling triangle state signal output of the main motor, and the sixth relay control circuit is used for controlling triangle state signal output of the standby motor;
the relay output circuit further comprises a seventh relay control circuit, an eighth relay control circuit, a ninth relay control circuit and a tenth relay control circuit, wherein the seventh relay control circuit is used for controlling the first fire-fighting linkage signal output, the eighth relay control circuit is used for controlling the second fire-fighting linkage signal output, the ninth relay control circuit is used for controlling the manual/automatic signal output, and the tenth relay control circuit is used for controlling the power failure signal output.
The first relay controller circuit or the second relay control circuit shown in fig. 5 is a schematic structural diagram, and comprises a twentieth resistor R123, a twenty-first resistor R126, a first triode, a third diode and a double-pole double-throw relay, wherein a first end of the twentieth resistor R123 and a signal input end of the double-pole double-throw relay are connected with a first signal output port of the controller, a first end of the twenty-first resistor R126 and a base electrode of the first triode are respectively connected with a second end of the twentieth resistor R123, an emitter electrode of the twenty-first resistor R126 and an emitter electrode of the first triode are connected with an external signal ground wire, a positive electrode of the third diode and a first end of the double-pole double-throw relay are connected with a collector electrode of the first triode, a negative electrode of the third diode and a second end of the double-pole double-throw relay are connected with a +5v direct current power supply, an auxiliary contact of the first set of the double-throw relay is used for driving an external contact, and a contact interface of the second set of the double-throw relay is used for externally connecting a fire pump.
The schematic structure of any one of the third to sixth relay control circuits shown in fig. 6 includes a twenty-second resistor, a twenty-third resistor, a second triode, a fourth diode and a single-pole double-throw relay, wherein a first end of the twenty-second resistor and a normally open pin of the single-pole double-throw relay are respectively connected with a first signal output port of the controller, a first end of the twenty-third resistor and a base electrode of the second triode are respectively connected with a second end of the twenty-second resistor, an emitter electrode of the second triode and a second end of the twenty-third resistor are respectively connected with an external signal ground wire, a first end of the single-pole single-throw relay and an anode of the fourth diode are respectively connected with a collector electrode of the second triode, a second end of the single-pole single-throw relay and a cathode of the fourth diode are respectively connected with a +5v direct current power supply, and a control signal output end of the single-pole double-throw relay is externally connected with an external contactor or a motor through an external output signal end.
The keys on the control panel include: silencing key, manual key, automatic key, main motor high-speed starting key, main motor stopping key, standby motor high-speed starting key and standby motor stopping key
The display circuit comprises a nixie tube display circuit and an indicator lamp circuit, wherein the nixie tube display circuit is used for displaying the running state, the operation prompt and the detection values of current and voltage, and the indicator lamp circuit comprises a normal power supply indicator lamp, a power failure indicator lamp, a manual indicator lamp, an automatic indicator lamp, a first linkage indicator lamp, a second linkage indicator lamp, a main motor low-speed running indicator lamp, a standby motor low-speed running indicator lamp, a main motor high-speed running indicator lamp, a standby motor high-speed running indicator lamp, a main motor overload indicator lamp, a standby motor overload indicator lamp, a main motor stop indicator lamp and a standby motor stop indicator lamp.
The first current detection signal conditioning circuit, the second current detection signal conditioning circuit, the first current detection protection circuit, the second current detection protection circuit, the voltage detection signal conditioning circuit, the voltage detection protection circuit, the external signal input isolation circuit and the relay output circuit are arranged on a main circuit board, the controller circuit, the key circuit, the display circuit, the indicator light circuit and the buzzer circuit are arranged on a display circuit board, and the main circuit board is connected with the display circuit board through a contact pin.
The current transformer sensing signal, the input end signal of the three-phase alternating voltage and the external signal are input to the main circuit board through an external input signal terminal.
It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of action combinations, but it should be understood by those skilled in the art that the present application is not limited by the order of action described, as some steps may be performed in other order or simultaneously according to the present application. Further, it should be understood by those skilled in the art that the embodiments described in the specification are all preferred embodiments, and the acts and elements referred to are not necessarily required for the present application.
In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments.
Those skilled in the art will appreciate that implementing all or part of the above-described methods in the embodiments may be accomplished by computer programs stored in a computer-readable storage medium, which when executed, may include the steps of the embodiments of the methods described above. Wherein the storage medium may be a magnetic disk, an optical disk, a ROM, a RAM, etc.
The foregoing disclosure is illustrative of the present application and is not to be construed as limiting the scope of the application, which is defined by the appended claims.
Claims (7)
1. The controller of the star-equipped triangle fire pump is characterized by comprising a controller circuit, a first current detection signal conditioning circuit, a first current detection protection circuit, a second current detection signal conditioning circuit, a second current detection protection circuit, a voltage detection signal conditioning circuit, a voltage detection protection circuit, an external signal input isolation circuit, a key circuit, a relay output circuit, a display circuit, an indicator light circuit, a buzzer circuit and a control panel;
the input ends of the first current detection signal conditioning circuit and the second current detection signal conditioning circuit are used for being connected with a current transformer, the output end of the first current detection signal conditioning circuit is connected with a first signal input port of the controller circuit through the first current detection protection circuit, and the output end of the second current detection signal conditioning circuit is connected with a first signal input port of the controller circuit through the second current detection protection circuit;
the input end of the voltage detection signal conditioning circuit is used for being connected with the input end of the three-phase alternating voltage, and the output end of the voltage detection signal conditioning circuit is connected with the second signal input port of the controller circuit through the voltage detection protection circuit;
an external signal is connected with a third signal input port of the controller circuit through the external signal input isolation circuit; the external signal includes: the system comprises a first remote pulse starting signal, a second remote pulse starting signal, a first remote pulse stopping signal, a second remote pulse stopping signal, a first continuous start-stop active signal, a second continuous start-stop active signal, a first continuous start-stop passive signal, a second continuous start-stop passive signal, a main motor overload detection signal, a standby motor overload detection signal, a main motor operation detection, a standby motor operation detection, a first fire valve detection signal, a second fire valve detection signal, a fire hydrant signal and a water shortage signal, wherein an external signal input isolation circuit comprises an optical coupler for isolating the input of external signals;
the control panel is provided with keys, and the keys on the control panel are connected with a fourth signal input port of the controller circuit through the key circuit;
the first signal output port of the controller is connected with the relay output circuit, the relay output circuit comprises a first relay control circuit, a second relay control circuit, a third relay control circuit, a fourth relay control circuit, a fifth relay control circuit and a sixth relay control circuit, the first relay control circuit is used for controlling the triangular state signal output of the main motor, the second relay control circuit is used for controlling the triangular state signal output of the standby motor, the third relay control circuit is used for controlling the overload working state signal output of the main motor, the fourth relay control circuit is used for controlling the overload working state signal output of the standby motor, the fifth relay control circuit is used for controlling the star state signal output of the main motor, the sixth relay control circuit is used for controlling the star state signal output of the standby motor, and the fifth relay control circuit is used for controlling the triangular state signal output of the main motor;
the output end of the relay output circuit is connected with a fifth signal input port of the controller circuit;
a second signal output port of the controller is connected with the display circuit; the display circuit comprises a nixie tube display circuit and an indicator lamp circuit, wherein the nixie tube display circuit is used for displaying the running state, the operation prompt and the detection values of current and voltage, and the indicator lamp circuit comprises a normal power supply indicator lamp, a power failure indicator lamp, a manual indicator lamp, an automatic indicator lamp, a first linkage indicator lamp, a second linkage indicator lamp, a main motor low-speed running indicator lamp, a standby motor low-speed running indicator lamp, a main motor high-speed running indicator lamp, a standby motor high-speed running indicator lamp, a main motor overload indicator lamp, a standby motor overload indicator lamp, a main motor stop indicator lamp and a standby motor stop indicator lamp;
and a third signal output port of the controller is connected with the buzzer circuit.
2. The controller for a star-delta fire pump as set forth in claim 1, wherein the first current detection signal conditioning circuit and the second current detection signal conditioning circuit are configured to convert signals collected by the current transformer into voltage signals, and the current detection protection circuit is configured to clamp the converted voltage signals.
3. The controller for a star-delta fire pump as defined in claim 1, wherein the voltage detection signal conditioning circuit is configured to step down an input three-phase ac voltage and convert the three-phase ac voltage into a voltage signal that can be used for detection, and the voltage detection protection circuit is configured to clamp the converted voltage signal.
4. A controller for a star-delta fire pump as defined in claim 1, wherein said keys on said control panel comprise: the device comprises a silencing key, a manual key, an automatic key, a main motor high-speed starting key, a main motor stopping key, a standby motor high-speed starting key and a standby motor stopping key.
5. The controller for a star-ready triangle fire pump of claim 1, wherein the relay output circuit further comprises a seventh relay control circuit, an eighth relay control circuit, a ninth relay control circuit and a tenth relay control circuit, wherein the seventh relay control circuit is used for controlling the first fire-fighting linkage signal output, the eighth relay control circuit is used for controlling the second fire-fighting linkage signal output, the ninth relay control circuit is used for controlling the manual/automatic signal output, and the tenth relay control circuit is used for controlling the power failure signal output.
6. The controller for a star-delta fire pump as set forth in any one of claims 1 to 5, wherein the first current detection signal conditioning circuit, the second current detection signal conditioning circuit, the first current detection protection circuit, the second current detection protection circuit, the voltage detection signal conditioning circuit, the voltage detection protection circuit, the external signal input isolation circuit and the relay output circuit are provided on a main circuit board, and the controller circuit, the key circuit, the display circuit, the indicator light circuit, and the buzzer circuit are provided on a display circuit board, and the main circuit board is connected to the display circuit board through pins.
7. The controller of a star-delta fire pump as set forth in claim 6, wherein the sensing signal of the current transformer, the input terminal signal of the three-phase ac voltage, and the external signal are inputted to the main circuit board through external input signal terminals.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810680438.7A CN109519361B (en) | 2018-06-27 | 2018-06-27 | Controller of one-star triangle fire-fighting water pump |
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| CN201810680438.7A CN109519361B (en) | 2018-06-27 | 2018-06-27 | Controller of one-star triangle fire-fighting water pump |
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| CN109519361B true CN109519361B (en) | 2023-11-14 |
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| CN110649929B (en) * | 2019-09-30 | 2021-04-27 | 郑州力通水务有限公司 | Pump station energy consumption data frequency modulation transmitting circuit |
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