CN107917068B - Full-automatic intelligent controller of three-phase mute oil-free air compressor - Google Patents
Full-automatic intelligent controller of three-phase mute oil-free air compressor Download PDFInfo
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- CN107917068B CN107917068B CN201711499540.9A CN201711499540A CN107917068B CN 107917068 B CN107917068 B CN 107917068B CN 201711499540 A CN201711499540 A CN 201711499540A CN 107917068 B CN107917068 B CN 107917068B
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- 238000005070 sampling Methods 0.000 claims abstract description 56
- 238000000819 phase cycle Methods 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 132
- 230000000087 stabilizing effect Effects 0.000 claims description 20
- 238000004804 winding Methods 0.000 claims description 9
- 239000013078 crystal Substances 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000003111 delayed effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000003321 amplification Effects 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000001012 protector Effects 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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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention relates to a full-automatic intelligent controller for a three-phase mute oil-free air compressor, which is a full-automatic intelligent controller integrating protection control and starting, wherein the full-automatic intelligent controller is controlled by a main circuit of a mute oil-free air compressor main machine to realize full-automatic intelligent control of the three-phase mute oil-free air compressor through processing of a singlechip U1, phase sequence protection, phase interruption protection and voltage protection, working voltage is displayed through a four-bit nixie tube SMG, phase sequence detection and fault current are carried out, LED D11-D22 indicates green operation, red faults are caused, CJ1 and CJ2 switch current transformer sampling signals, and any starting main machine starting button S1 or main machine starting button S2, main machine starting button S3, main machine starting button S4, main machine starting button S5 and main machine starting button S6 can start all the mute oil-free air compressor main machines in sequence delay, all the mute oil-free air compressor main machines are also automatically stopped in sequence delay when the pressure reaches a set value, all the mute oil-free air compressor main machines are automatically started in sequence delay when the pressure is low to a certain value, and a control switch S7 is a total oil-free switch, and the characteristics of stable performance, good protection effect and the like are achieved.
Description
Technical field:
the invention relates to the field of automatic control of low-voltage electric appliances and motor protectors, in particular to a full-automatic intelligent controller of a three-phase mute oil-free air compressor.
The background technology is as follows:
the oil-shortage protection control of the air compressor of the prior air compressor has pressure protection and oil-shortage protection, but has poor simple reliability, and most of motor protection still uses traditional thermal relays or electronic protection, and has the defects that the air compressor is only applicable to general motor protection, the specificity of the motor of the air compressor is not considered, and the air compressor also has a plurality of linked pressure protection and oil-shortage protection.
The invention comprises the following steps:
the invention aims to overcome the defects and discloses a full-automatic intelligent controller of a three-phase mute oil-free air compressor, which is provided with a full-automatic intelligent controller integrating protection control and starting, and solves the problem that a large number of contactors and motors are burnt out due to frequent shaking caused by poor contact of a pressure relay and the contactor. The invention has the characteristics of stable performance, good protection effect and the like.
The technical scheme of the invention is as follows: the full-automatic intelligent controller of the three-phase mute oil-free air compressor comprises an air compressor starting protection control integrated multi-channel signal sampling amplifying circuit, a display circuit, a control circuit, a phase sequence and three-phase voltage sampling circuit, a power supply circuit, a singlechip peripheral circuit, a mute oil-free air compressor host main circuit and an oil-free air compressor equipment structure, and is characterized in that the air compressor starting protection control integrated multi-channel signal sampling amplifying circuit is provided with 6 identical sampling amplifying circuits corresponding to 6 identical mute oil-free air compressors, and is respectively provided with a sampling amplifying circuit FB1, a sampling amplifying circuit FB2, a sampling amplifying circuit FB3, a sampling amplifying circuit FB4, a sampling amplifying circuit FB5 and a sampling amplifying circuit FB6, one ends of a current transformer L1, a current transformer L2, a current transformer L3, a current transformer L4 and a current transformer L5 are connected with a ground wire V0, taking the sampling amplifying circuit FB1 as an example, the other end of the current transformer L1 is respectively connected with a resistor R15, a resistor R16, a resistor R17 and a capacitor C15, the other ends of the resistor R15, the resistor R16 and the capacitor C15 are respectively connected with a ground wire V0, the other ends of the resistor R17, a resistor R18, a diode D2 positive electrode and an operational amplifier U3 negative input end, a diode D2 negative electrode is connected with a positive power supply V+10, the positive input end of the operational amplifier U3 is connected with the ground wire, the power supply of the operational amplifier U3 is respectively connected with the positive power supply V+10 and a negative power supply V-10, the output end of the operational amplifier U3 is connected with the positive electrode of the diode D3, the other ends of the resistor R18 are connected with a resistor R19 and the negative electrode of the diode D3, the other ends of the resistor R19 are connected with the positive electrode of the electrolytic capacitor C7 and the capacitor C16, the negative electrode of the electrolytic capacitor C7 is connected with the ground wire V0, the other ends of the capacitor C16 are connected with the ground wire V0, the positive electrode of the electrolytic capacitor C7 is also used as the output end of the sampling amplifying circuit FB1 to be connected with a pin 25 of the singlechip U1, the output end of the sampling amplification circuit FB2 is connected with the U1 pin 26 of the single-chip microcomputer, the output end of the sampling amplification circuit FB3 is connected with the U1 pin 24 of the single-chip microcomputer, the output end of the sampling amplification circuit FB4 is connected with the U1 pin 22 of the single-chip microcomputer, the output end of the sampling amplification circuit FB5 is connected with the U1 pin 21 of the single-chip microcomputer, and the output end of the sampling amplification circuit FB6 is connected with the U1 pin 20 of the single-chip microcomputer.
The single chip microcomputer pin U1/44 of the single chip microcomputer U1 is connected with the shift latch pin U7/11 of the shift latch U7 and the shift latch pin U8/11 of the shift latch U8, the single chip microcomputer pin U1/43 of the single chip microcomputer U1 is connected with the shift latch pin U7/12 of the shift latch U7 and the shift latch pin U8/12 of the shift latch U8, the single chip microcomputer pin U1/37 of the single chip microcomputer U1 is connected with the shift latch pin U7/14 of the shift latch U7, the shift latch pin U7/3 of the shift latch U7 is connected with the bit pin of the four-bit nixie tube SMG, the shift latch pin U7/2 of the shift latch U7 is connected with the ten-bit pin of the four-bit nixie tube SMG, the shift latch pin U7/1 of the shift latch U7 is connected with the hundred-bit pin of the four-bit nixie tube SMG, the shift latch pin U7/15 of the shift latch U7 is connected with the kilobit pin of the four-bit nixie tube SMG, the shift latch pin U7/9 and the shift latch pin U7/16 of the shift latch U7 are connected with the positive power supply V+5, the shift latch pin U7/8 and the shift latch pin U7/13 of the shift latch U7 are connected with the ground wire VV0, the shift latch pin U8/15 of the shift latch U8 is connected with the resistor R34, the other end of the resistor R34 is connected with the light emitting diode D11, the light emitting diode D12 and the pin a of the four-bit nixie tube SMG, the shift latch pin U8/1 of the resistor R33 is connected with the light emitting diode D13, the light emitting diode D14 and the pin b of the four-bit nixie tube SMG, the other end of the resistor R32 is connected with the light emitting diode D15, the light emitting diode D16 and the pin c of the four-bit nixie tube SMG, the shift latch pin U8/3 of the shift latch U8 is connected with the resistor R31, the other end of the resistor R31 is connected with the light emitting diode D17, the light emitting diode D18 and the pin D of the four-bit nixie tube SMG, the shift latch pin U8/4 of the shift latch U8 is connected with the resistor R30, the other end of the resistor R30 is connected with the light emitting diode D19, the light emitting diode D20 and the pin e of the four-bit nixie tube SMG, the shift latch pin U8/5 of the shift latch U8 is connected with the resistor R29, the other end of the resistor R29 is connected with the light emitting diode D21, the light emitting diode D22 and the pin f of the four-bit nixie tube SMG, the shift latch U8 is connected with the resistor R28, the other end of the resistor R28 is connected with the pin g of the four-bit nixie tube SMG, the shift latch U8/7 is connected with the shift latch pin U8/7 of the resistor R27, the shift latch U7 is connected with the other end of the four-bit nixie tube SMG, and the power supply pin 7/7 is connected with the shift latch U7/7 is connected with the power supply pin 7.
The single-chip microcomputer U1/8 of the single-chip microcomputer U1 in the control circuit is connected with a resistor R40, the other end of the resistor R40 is connected with a resistor R49 and a host starting button S1, the single-chip microcomputer U1/8 of the single-chip microcomputer U1 is connected with a resistor R39, the other end of the resistor R39 is connected with a resistor R48 and a host starting button S2, the single-chip microcomputer U1/8 of the single-chip microcomputer U1 is connected with a resistor R38, the other end of the resistor R38 is connected with a host starting button S3, the single-chip microcomputer U1/8 of the single-chip microcomputer U1 is connected with a resistor R37, the other end of the resistor R37 is connected with a resistor R46 and a host starting button S4, the single-chip microcomputer U1/8 of the single-chip microcomputer U1 is connected with a resistor R36, the other end of the resistor R45 is connected with a host starting button S5, the single-chip microcomputer U1/8 of the single-chip microcomputer U1 is connected with a resistor R35, the other end of the resistor R35 is connected with the resistor R44 and the host starting button S6, A single-chip microcomputer pin U1/4 of a single-chip microcomputer U1 is connected with a resistor R41, the other end of the resistor R41 is connected with a base electrode of a triode BG1, a collector electrode of the triode BG1 is connected with a relay K1, a diode D5 and an electrolytic capacitor C22, the other end of the relay K1, the diode D5 and the other end of the electrolytic capacitor C22 are connected with a positive power supply V+12, an emitter electrode of the triode BG1 is connected with a ground wire V0, a single-chip microcomputer pin U1/3 of the single-chip microcomputer U1 is connected with a resistor R42, the other end of the resistor R41 is connected with a base electrode of a triode BG2, a collector electrode of the triode BG2 is connected with a relay K2, a diode D6 and an electrolytic capacitor C23, the other end of the relay K2, the diode D6 and the other end of the electrolytic capacitor C23 are connected with a positive power supply V+12, an emitter electrode of the triode BG2 is connected with a ground wire V0, a single-chip microcomputer pin U1/2 of the single-chip microcomputer is connected with a resistor R43, the other end of the resistor R43 is connected with a base electrode of the triode BG3, the triode BG3 is connected with the relay K3, diode D7 and electrolytic capacitor C24, relay K3, diode D7 and electrolytic capacitor C24's the other end is connected positive power V+12, triode BG3 projecting pole is connected ground line V0, singlechip pin U1/40 of singlechip U1 is connected resistance R50, triode BG4 base is connected to the other end of resistance R50, triode BG4 collecting electrode is connected with relay K4, diode D8 and electrolytic capacitor C25, relay K4, diode D8 and electrolytic capacitor C24's the other end is connected positive power V+12, triode BG4 projecting pole is connected ground line V0, singlechip pin U1/39 of singlechip U1 is connected resistance R51, triode BG5 base is connected to the other end of resistance R51, triode BG5 collecting electrode is connected with relay K5, diode D9 and electrolytic capacitor C26, relay K5, diode D9 and electrolytic capacitor C26's the other end is connected positive power V+12, the emitter of the triode BG5 is connected with a ground wire V0, the U1/38 of the U1 single chip microcomputer is connected with a resistor R52, the other end of the resistor R52 is connected with the base electrode of the triode BG6, the collector electrode of the triode BG6 is connected with a relay K6, a diode D10 and an electrolytic capacitor C27, the other ends of the relay K6, the diode D10 and the electrolytic capacitor C27 are connected with a positive power supply V+12, the emitter of the triode BG6 is connected with the ground wire V0, the U1/1 of the U1 single chip microcomputer is connected with a resistor R21, the U1/32 of the U1 single chip microcomputer is connected with a resistor R20, the U1/41 of the U1 single chip microcomputer is connected with a resistor R22, the U1/23 of the U1 single chip microcomputer is connected with a resistor R23, the other end of the resistor R23 is connected with a resistor 24, the anode of the D4, the capacitor C18, the capacitor C19 and an inductor PL1, the resistor R20, the resistor R21, the resistor 24 and the cathode of the D4 are connected with a positive power supply V+5, the other ends of the capacitor C18 and the capacitor C19 are connected to the ground line V0, and the other end of the inductor PL1 is connected to the air pressure switch 11 together with the ground line V0.
A phase power supply U in the phase sequence circuit is connected with a resistor R7, the other end of the resistor R7 is connected with a capacitor C28, a resistor R9 and the positive electrode of a light emitting diode of an optocoupler U5, a W C phase power supply is connected with a resistor R8, the other end of the resistor R8 is connected with a capacitor C29, a resistor R10 and the negative electrode of a light emitting diode of the optocoupler U6, a B phase power supply V is connected with the other end of the resistor R10 and the negative electrode of the light emitting diode of the optocoupler U5 and the positive electrode of the light emitting diode of the optocoupler U6, the collector of the optocoupler U5 is connected with a resistor R13 and a resistor R11, the other end of the resistor R13 is connected with a positive power supply V+5, and the other end of the resistor R11 is connected with a single chip microcomputer pin U1/35 of the single chip microcomputer U1.
In the power circuit, a primary winding of a power transformer T is respectively connected with a B-phase power supply V and a C-phase power supply W, a secondary winding of the power transformer is respectively connected with a pin DB1/1 of a bridge rectifier DB1 and a pin DB1/2 of the bridge rectifier DB1, the center line of the secondary winding of the power transformer is connected with a ground wire V0, the pin DB1/3 of the bridge rectifier DB1 is an output positive power supply V+12 and is simultaneously connected with the positive pole of the electrolytic capacitor C1, a capacitor C8, a resistor R1 and a voltage stabilizing integrated block U3 pin DB1/1 of the voltage stabilizing integrated block U3, the pin DB1/4 of the bridge rectifier DB1 is connected with the negative pole of the electrolytic capacitor C2 and a resistor R2, the other end of the resistor R1 is connected with the positive pole of the electrolytic capacitor C5, the negative pole of the capacitor C11 and the negative pole of the voltage stabilizing tube WD1 are connected with the output positive power supply V+10, the negative pole of the electrolytic capacitor C5 and the other end of the capacitor C11 are connected with the negative pole of the capacitor C4, the positive pole of the resistor R2 is connected with the positive pole of the electrolytic capacitor C10 and the voltage stabilizing tube WD2, and the positive pole of the voltage stabilizing tube WD1 is connected with the positive ground wire of the positive pole of the voltage stabilizing capacitor WD2 is connected with the voltage stabilizing tube WD 0.
The single chip microcomputer peripheral circuit is provided with a capacitor C12, a crystal oscillator Y1 and a single chip microcomputer pin U1/31 of the single chip microcomputer U1, the capacitor C12 is connected with the other end of the crystal oscillator Y1 and the single chip microcomputer pin U1/30 of the single chip microcomputer U1, the capacitor C12 and the other end of the capacitor C13 are connected with a ground wire VV0, the single chip microcomputer pin U1/7 of the single chip microcomputer U1 and the single chip microcomputer pin U1/28 of the single chip microcomputer U1 are connected with a capacitor C20, a capacitor C21 and a positive power supply V+5, the single chip microcomputer pin U1/6 of the single chip microcomputer U1 and the single chip microcomputer pin U1/29 of the single chip microcomputer U1 are connected with the other end of the capacitor C20, the other end of the capacitor C21 and the ground wire VV0, the other end of the CJ1-CJ2 current transformer signal switching plug is connected with a resistor R25, the other end of the resistor R26 is connected with the single chip microcomputer pin U1/5 of the single chip microcomputer U1, and the current transformer signal switching plug CJ1 is connected with the ground wire VV0.
A three-phase power supply A phase power supply U in a main circuit of a main machine of the mute oil-free air compressor is respectively connected with a contactor KM1, a contactor KM2, a contactor KM3, a contactor KM4, a contactor KM5, an upper contact of a contactor KM6, a contactor KM1, a contactor KM2, a contactor KM3, a contactor KM4, a contactor KM5 and a coil of a contactor KM6, a B phase power supply V is respectively connected with the contactor KM1, the contactor KM2, the contactor KM3, the contactor KM4, the contactor KM5 and the upper contact of the contactor KM6, C phase power W connects contactor KM1, contactor KM2, contactor KM3, contactor KM4, contactor KM5, contactor KM 6's upper contact and relay K1, relay K2, relay K3, relay K4, relay K5 and relay K6 respectively, the other end of K1 is connected to the other end of contactor KM1 coil, the other end of K2 is connected to the other end of contactor KM2 coil, the other end of K3 is connected to the other end of contactor KM3 coil, the other end of K4 is connected to the other end of contactor KM4 coil, the other end of K5 is connected to the other end of contactor KM5 coil, the other end of K6 is connected to the other end of contactor KM6 coil.
In the oil-free air compressor device structure, a first mute oil-free air compressor host (1), a second mute oil-free air compressor host (2), a third mute oil-free air compressor host (3), a fourth mute oil-free air compressor host (4), a fifth mute oil-free air compressor host (5) and a sixth mute oil-free air compressor host (6) are distributed on the upper part of an air storage tank (8), a pressure gauge (9), a safety valve (10), an air pressure switch (11), an air outlet pipe (13) of the storage tank and an air outlet ball valve (14) are combined into a whole, an intelligent controller (7) is arranged on one side of the air storage tank (8), a control switch (S7), a four-bit nixie tube SMG, a host start button and a light-emitting diode are arranged on a panel of the intelligent controller (7), the single chip microcomputer U1 processes and realizes full-automatic intelligent control of the three-phase mute oil-free air compressor through the main circuit control of the mute oil-free air compressor, phase sequence protection, phase interruption protection and voltage protection are carried out, the working voltage, phase sequence detection and fault current are displayed through the four-bit nixie tube SMG, the LED D11-D22 indicates green operation and red fault, the CJ1 and the CJ2 switch current transformer sampling signals, the host start button S1 or the host start button S2, the host start button S3, the host start button S4, the host start button S5 and the host start button S6 are started in sequence in time delay, and when the pressure reaches a set value, all the mute oil-free air compressor hosts can be automatically stopped in sequence in time delay, when the pressure is low to a certain value, all the silent oilless air compressor main machines are automatically started in sequence in a delayed mode, and the control switch S7 is a master switch.
The invention relates to a full-automatic intelligent controller for a three-phase mute oil-free air compressor, which is a full-automatic intelligent controller integrating protection control and starting, wherein the full-automatic intelligent controller is controlled by a main circuit of a mute oil-free air compressor main machine to realize full-automatic intelligent control of the three-phase mute oil-free air compressor through processing of a singlechip U1, phase sequence protection, phase interruption protection and voltage protection, working voltage is displayed through a four-bit nixie tube SMG, phase sequence detection and fault current are carried out, LED D11-D22 indicates green operation, red faults are caused, CJ1 and CJ2 switch current transformer sampling signals, and any starting main machine starting button S1 or main machine starting button S2, main machine starting button S3, main machine starting button S4, main machine starting button S5 and main machine starting button S6 can start all the mute oil-free air compressor main machines in sequence delay, all the mute oil-free air compressor main machines are also automatically stopped in sequence delay when the pressure reaches a set value, all the mute oil-free air compressor main machines are automatically started in sequence delay when the pressure is low to a certain value, and a control switch S7 is a total oil-free switch, and the characteristics of stable performance, good protection effect and the like are achieved.
Drawings
Fig. 1 is a schematic diagram of a circuit of a full-automatic intelligent controller of a three-phase mute oil-free air compressor
Fig. 2 is a schematic diagram of a main circuit of a full-automatic intelligent controller of a three-phase mute oil-free air compressor
Fig. 3 is a schematic diagram of a full-automatic intelligent controller device structure of a three-phase mute oil-free air compressor
In the figure: L1-L6 current transformer, R1-R52 resistor, C1-C7 electrolytic capacitor, C22-C27 electrolytic capacitor, C8-C21 capacitor, C28-C29 capacitor, D1-D10 diode, D11-D22 LED, WD1-WD2 zener diode, BG1-BG6 triode, FB1-FB6 sampling amplifying circuit, U1 SCM, U1/1-U1/44 SCM pin, U2-U3 operational amplifier, U4 voltage stabilizing integrated block, U5-U6 optocoupler, U7-U8 shift latch, U7/1-U7/16 shift latch pin, U8/1-U8/16 shift latch pin, SMG four-bit digital tube T1 power transformer, DB1 bridge rectifier, Y1 crystal oscillator, CJ1-CJ2 current transformer signal switching plug, V+5 positive power supply, V+10 positive power supply, V-10 negative power supply, V0 ground wire, V V ground wire, PL1 inductor, S1-S6 host start button, S7-control switch, K1-K6 relay, KM1-KM6 contactor, M1-M6 air compressor host motor, U A phase power supply, V B phase power supply, W C phase power supply, 1-6 mute oil-free air compressor host, 7 intelligent controller, 8 air storage tank, 9 pressure gauge, 10 safety valve, 11 air pressure switch, 12 storage tank air outlet pipe, 13-14 air outlet ball valve.
Detailed Description
Fig. 1 is a schematic diagram of a circuit of a full-automatic intelligent controller of a three-phase mute oil-free air compressor, fig. 2 is a schematic diagram of a main circuit of the full-automatic intelligent controller of the three-phase mute oil-free air compressor, fig. 3 is a schematic diagram of a device of the full-automatic intelligent controller of the three-phase mute oil-free air compressor, the working principle is that a current signal is sampled by a current transformer L1 or a current transformer L2, a current transformer L3, a current transformer L4, a current transformer L5 and a current transformer L6, a sampling amplifying circuit FB1 is taken as an example to perform signal processing and amplifying to enter the single-chip microcomputer U1, a three-phase power supply enters the single-chip microcomputer U1 through a phase sequence and a three-phase voltage sampling circuit, the three-phase mute oil-free air compressor is controlled by a main circuit of the single-chip microcomputer U1 to realize full-automatic intelligent control of the three-phase mute oil-free air compressor, phase sequence protection and phase interruption protection and voltage protection are performed, a four-position nixie tube SMG displays working voltage, phase sequence detection and fault current, light emitting diodes D11-D22 indicate green running, red faults are switched by the current transformer sampling signals, any starting button S1 or host starting button S2, host starting button S3, oil-free button S4 and host computer starting button S6 can be automatically stopped according to a certain value when all the host starting sequence is started by the automatic host computer starting time delay time, and all the host computer is automatically delayed by the host computer is in a certain value, and the host machine is automatically started when the host machine is in a certain order, and the host machine is started.
The specific implementation scheme is that the air compressor starting protection control integrated multipath signal sampling amplifying circuit is provided with 6 identical sampling amplifying circuits corresponding to the same mute oil-free air compressor, the sampling amplifying circuits FB1, the sampling amplifying circuits FB2, the sampling amplifying circuits FB3, the sampling amplifying circuits FB4, the sampling amplifying circuits FB5 and the sampling amplifying circuits FB6 are respectively connected with a ground wire V0 at one ends of a current transformer L1, a current transformer L2, a current transformer L3, a current transformer L4 and a current transformer L5 and the current transformer L6, the other ends of the sampling amplifying circuits FB1 are respectively connected with a resistor R15, a resistor R16, a resistor R17 and a capacitor C15, the other ends of the resistor R15, the resistor R16 and the capacitor C15 are respectively connected with a ground wire V0, the other ends of the resistor R17 are respectively connected with the positive electrode of a diode D2 and the negative input end of an operational amplifier U3, the cathode of the diode D2 is connected with the positive power supply V+10, the positive input end of the operational amplifier U3 is connected with the ground wire, the power supply of the operational amplifier U3 is respectively connected with the positive power supply V+10 and the negative power supply V-10, the output end of the operational amplifier U3 is connected with the anode of the diode D3, the other end of the resistor R18 is connected with the resistor R19 and the cathode of the diode D3, the other end of the resistor R19 is connected with the anode of the electrolytic capacitor C7 and the capacitor C16, the cathode of the electrolytic capacitor C7 is connected with the ground wire V0, the other end of the capacitor C16 is connected with the ground wire V0, the anode of the electrolytic capacitor C7 is also connected with the U1 pin 25 of the single chip microcomputer as the output end of the sampling amplifying circuit FB1, the output end of the sampling amplifying circuit FB2 is connected with the U1 pin 26 of the single chip microcomputer U1 pin 24, the output end of the sampling amplifying circuit FB4 is connected with the U1 pin 22 of the single chip microcomputer U1 pin 21, the output end of the sampling amplifying circuit FB6 is connected with a U1 pin 20 of the singlechip; the single chip microcomputer pin U1/44 of the single chip microcomputer U1 is connected with the shift latch pin U7/11 of the shift latch U7 and the shift latch pin U8/11 of the shift latch U8, the single chip microcomputer pin U1/43 of the single chip microcomputer U1 is connected with the shift latch pin U7/12 of the shift latch U7 and the shift latch pin U8/12 of the shift latch U8, the single chip microcomputer pin U1/37 of the single chip microcomputer U1 is connected with the shift latch pin U7/14 of the shift latch U7, the shift latch pin U7/3 of the shift latch U7 is connected with the bit pin of the four-bit nixie tube SMG, the shift latch pin U7/2 of the shift latch U7 is connected with the ten-bit pin of the four-bit nixie tube SMG, the shift latch pin U7/1 of the shift latch U7 is connected with the hundred-bit pin of the four-bit nixie tube SMG, the shift latch pin U7/15 of the shift latch U7 is connected with the kilobit pin of the four-bit nixie tube SMG, the shift latch pin U7/9 and the shift latch pin U7/16 of the shift latch U7 are connected with the positive power supply V+5, the shift latch pin U7/8 and the shift latch pin U7/13 of the shift latch U7 are connected with the ground wire VV0, the shift latch pin U8/15 of the shift latch U8 is connected with the resistor R34, the other end of the resistor R34 is connected with the light emitting diode D11, the light emitting diode D12 and the pin a of the four-bit nixie tube SMG, the shift latch pin U8/1 of the resistor R33 is connected with the light emitting diode D13, the light emitting diode D14 and the pin b of the four-bit nixie tube SMG, the other end of the resistor R32 is connected with a light emitting diode D15, a light emitting diode D16 and a pin C of a four-bit nixie tube SMG, the shift latch pin U8/3 of the shift latch U8 is connected with a resistor R31, the other end of the resistor R31 is connected with a light emitting diode D17, a light emitting diode D18 and a pin D of a four-bit nixie tube SMG, the shift latch pin U8/4 of the shift latch U8 is connected with a resistor R30, the other end of the resistor R30 is connected with a light emitting diode D19, a light emitting diode D20 and a pin e of the four-bit nixie tube SMG, the shift latch pin U8/5 of the shift latch U8 is connected with a resistor R29, the other end of the resistor R29 is connected with a light emitting diode D21, a light emitting diode D22 and a pin f of the four-bit nixie tube SMG, the shift latch U8 is connected with a resistor R28, the other end of the resistor R28 is connected with a pin g of the four-bit nixie tube SMG, the shift latch U8/7 is connected with a shift latch U8/7 of the shift latch U27, the shift latch U7 is connected with a pin V7/7 of the shift latch U7 and the four-bit nixie tube SMG, and the other end of the shift latch 7 is connected with a power supply pin 7; the control circuit is characterized in that a singlechip pin U1/8 of the singlechip U1 in the control circuit is connected with a resistor R40, the other end of the resistor R40 is connected with a resistor R49 and a host starting button S1, the singlechip pin U1/8 of the singlechip U1 is connected with a resistor R39, the other end of the resistor R39 is connected with a resistor R48 and a host starting button S2, the singlechip pin U1/8 of the singlechip U1 is connected with a resistor R38, the other end of the resistor R38 is connected with a resistor R47 and a host starting button S3, the singlechip pin U1/8 of the singlechip U1 is connected with a resistor R37, the other end of the resistor R37 is connected with a resistor R46 and a host starting button S4, the singlechip pin U1/8 of the singlechip U1 is connected with a resistor R36, the other end of the resistor R36 is connected with a resistor R45 and a host starting button S5, the singlechip pin U1/8 of the singlechip U1 is connected with a resistor R35, the other end of the resistor R35 is connected with a resistor R44 and a host starting button S6, the single-chip microcomputer U1 pin U1/4 of the single-chip microcomputer U1 is connected with a resistor R41, the other end of the resistor R41 is connected with a base electrode of a triode BG1, a collector electrode of the triode BG1 is connected with a relay K1, a diode D5 and an electrolytic capacitor C22, the other ends of the relay K1, the diode D5 and the electrolytic capacitor C22 are connected with a positive power supply V+12, an emitter electrode of the triode BG1 is connected with a ground wire V0, the single-chip microcomputer U1/3 of the single-chip microcomputer U1 is connected with a resistor R42, the other end of the resistor R41 is connected with a base electrode of a triode BG2, a collector electrode of the triode BG2 is connected with a relay K2, a diode D6 and an electrolytic capacitor C23, the other ends of the relay K2, the diode D6 and the electrolytic capacitor C23 are connected with a positive power supply V+12, an emitter electrode of the triode BG2 is connected with a ground wire V0, the single-chip microcomputer U1/2 of the single-chip microcomputer U1 is connected with a resistor R43, the other end of the resistor R43 is connected with a base electrode of the triode BG3, the collector of the triode BG3 is connected with the relay K3, the diode D7 and the electrolytic capacitor C24, the other ends of the relay K3, the diode D7 and the electrolytic capacitor C24 are connected with the positive power supply V+12, the emitter of the triode BG3 is connected with the ground wire V0, the pin U1/40 of the singlechip U1 is connected with the resistor R50, the other end of the resistor R50 is connected with the base of the triode BG4, the collector of the triode BG4 is connected with the relay K4, the diode D8 and the electrolytic capacitor C25, the other ends of the relay K4, the diode D8 and the electrolytic capacitor C24 are connected with the positive power supply V+12, the emitter of the triode B64 is connected with the ground wire V0, the pin U1/39 of the singlechip U1 is connected with the resistor R51, the other end of the resistor R51 is connected with the base of the triode BG5, the collector of the triode BG5 is connected with the relay K5, the diode D9 and the electrolytic capacitor C26, the other ends of the relay K5, the diode D9 and the electrolytic capacitor C26 are connected with the positive power supply V+12, the emitter of the triode BG5 is connected with a ground wire V0, the U1/38 of the U1 single chip microcomputer is connected with a resistor R52, the other end of the resistor R52 is connected with the base electrode of the triode BG6, the collector of the triode BG6 is connected with a relay K6, a diode D10 and an electrolytic capacitor C27, the other end of the relay K6, the diode D10 and the other end of the electrolytic capacitor C27 are connected with a positive power supply V+12, the emitter of the triode BG6 is connected with the ground wire V0, the U1/1 of the U1 single chip microcomputer is connected with a resistor R21, the U1/32 of the U1 single chip microcomputer is connected with a resistor R20, the U1/41 of the U1 single chip microcomputer is connected with a resistor R22, the U1/23 of the U1 single chip microcomputer is connected with a resistor R23, the other end of the resistor R23 is connected with a resistor 24, the diode D4 is positive, a capacitor C18, a capacitor C19 and an inductor PL1, a resistor R20, a resistor R21, a resistor R22, resistor 24 and diode D4 negative electrode connect positive power supply V+5, capacitor C18 and capacitor C19 other end connect ground line V0, inductor PL1 other end connect and ground line V0 together to connect air pressure switch 11; the phase sequence circuit is characterized in that an A-phase power supply U is connected with a resistor R7, the other end of the resistor R7 is connected with a capacitor C28, a resistor R9 and the positive electrode of a light emitting diode of an optocoupler U5, a W C-phase power supply is connected with a resistor R8, the other end of the resistor R8 is connected with a capacitor C29, a resistor R10 and the negative electrode of a light emitting diode of the optocoupler U6, a B-phase power supply V is connected with the other end of the resistor R10 and the negative electrode of the light emitting diode of the optocoupler U5 and the positive electrode of the light emitting diode of the optocoupler U6, the collector of the optocoupler U5 is connected with a resistor R13 and a resistor R11, the other end of the resistor R13 is connected with a positive power supply V+5, and the other end of the resistor R11 is connected with a single chip microcomputer pin U1/35 of a single chip microcomputer U1; in the power circuit, a primary winding of a power transformer T is respectively connected with a B-phase power supply V and a C-phase power supply W, a secondary winding of the power transformer is respectively connected with a pin DB1/1 of a bridge rectifier DB1 and a pin DB1/2 of the bridge rectifier DB1, the center line of the secondary winding of the power transformer is connected with a ground wire V0, the pin DB1/3 of the bridge rectifier DB1 is an output positive power supply V+12 and is simultaneously connected with the positive pole of an electrolytic capacitor C1, a capacitor C8, a resistor R1 and a voltage stabilizing integrated block U3 pin DB1/1 of a voltage stabilizing integrated block U3, the pin DB1/4 of the bridge rectifier DB1 is connected with the negative pole of an electrolytic capacitor C2 and a resistor R2, the other end of the resistor R1 is connected with the positive pole of an electrolytic capacitor C5, the negative pole of the capacitor C11 and the negative pole of a voltage stabilizing tube WD1 are connected with the positive pole of the electrolytic capacitor C4, the negative pole of the resistor R2 is connected with the other end of the capacitor C0, the positive pole of the electrolytic capacitor C4 is connected with the negative pole of the voltage stabilizing tube WD1, and the positive pole of the voltage stabilizing tube WD2 is connected with the positive ground wire of the voltage stabilizing tube WD 0; the single-chip microcomputer peripheral circuit is provided with a capacitor C12, a crystal oscillator Y1 and a single-chip microcomputer pin U1/31 of the single-chip microcomputer U1, the capacitor C12 is connected with the other end of the crystal oscillator Y1 and the single-chip microcomputer pin U1/30 of the single-chip microcomputer U1, the capacitor C12 and the other end of the capacitor C13 are connected with a ground wire VV+5, the single-chip microcomputer pin U1/7 of the single-chip microcomputer U1 and the single-chip microcomputer pin U1/28 of the single-chip microcomputer U1 are connected with a capacitor C20, a capacitor C21 and a positive power supply V+5, the single-chip microcomputer pin U1/6 of the single-chip microcomputer U1 and the single-chip microcomputer pin U1/29 of the single-chip microcomputer U1 are connected with the other end of the capacitor C20, the other end of the capacitor C21 and the ground wire VV0, the CJ1-CJ2 current transformer signal switching plug-in the resistor R25 is connected with a positive power supply V+5, the current transformer signal switching plug-in the CJ1 is connected with the 2 pin connecting resistor R26, and the other end of the resistor R26 is connected with the single-chip microcomputer U1 and the single-chip microcomputer pin U1/5, and the current transformer pin signal switching plug-in CJ1 is connected with the ground wire 3; a three-phase power supply A phase power supply U in a main circuit of a main machine of the mute oil-free air compressor is respectively connected with a contactor KM1, a contactor KM2, a contactor KM3, a contactor KM4, a contactor KM5, an upper contact of a contactor KM6, a contactor KM1, a contactor KM2, a contactor KM3, a contactor KM4, a contactor KM5 and a coil of a contactor KM6, a B phase power supply V is respectively connected with the contactor KM1, the contactor KM2, the contactor KM3, the contactor KM4, the contactor KM5 and the upper contact of the contactor KM6, the C-phase power supply W is respectively connected with upper contacts of a contactor KM1, a contactor KM2, a contactor KM3, a contactor KM4, a contactor KM5 and a contactor KM6, and a relay K1, a relay K2, a relay K3, a relay K4, a relay K5 and a relay K6, wherein the other end of a coil of the contactor KM1 is connected with the other end of the K1, the other end of a coil of the contactor KM2 is connected with the other end of the K2, the other end of a coil of the contactor KM3 is connected with the other end of the K3, the other end of a coil of the contactor KM4 is connected with the other end of the K4, the other end of a coil of the contactor KM5 is connected with the other end of the K5, and the other end of a coil of the contactor KM6 is connected with the other end of the K6; in the mute oil-free air compressor device structure, a first mute oil-free air compressor host machine (1), a second mute oil-free air compressor host machine (2), a third mute oil-free air compressor host machine (3), a fourth mute oil-free air compressor host machine (4), a fifth mute oil-free air compressor host machine (5) and a sixth mute oil-free air compressor host machine (6) are distributed on the upper part of an air storage tank (8), a pressure gauge (9), a safety valve (10), an air pressure switch (11), a storage tank air outlet pipe (13) and an air outlet ball valve (14) are combined into a whole, an intelligent controller (7) is arranged on one side of the air storage tank (8), a control switch (S7), a four-bit nixie tube SMG, a host start button and a light emitting diode are arranged on a panel of the intelligent controller (7), the single chip microcomputer U1 processes and realizes full-automatic intelligent control of the three-phase mute oil-free air compressor through the main circuit control of the mute oil-free air compressor, phase sequence protection, phase interruption protection and voltage protection are carried out, the working voltage, phase sequence detection and fault current are displayed through the four-bit nixie tube SMG, the LED D11-D22 indicates green operation and red fault, the CJ1 and the CJ2 switch current transformer sampling signals, the host start button S1 or the host start button S2, the host start button S3, the host start button S4, the host start button S5 and the host start button S6 are started in sequence in time delay, and when the pressure reaches a set value, all the mute oil-free air compressor hosts can be automatically stopped in sequence in time delay, when the pressure is low to a certain value, all the silent oilless air compressor main machines are automatically started in sequence in a delayed mode, and the control switch S7 is a master switch.
Claims (1)
1. The full-automatic intelligent controller of the three-phase mute oil-free air compressor comprises an air compressor starting protection control integrated multi-channel signal sampling amplifying circuit, a display circuit, a control circuit, a phase sequence and three-phase voltage sampling circuit, a power supply circuit, a singlechip peripheral circuit, a mute oil-free air compressor host main circuit and an oil-free air compressor equipment structure, and is characterized in that the air compressor starting protection control integrated multi-channel signal sampling amplifying circuit is provided with 6 identical sampling amplifying circuits corresponding to 6 identical mute oil-free air compressors, and is respectively provided with a sampling amplifying circuit FB1, a sampling amplifying circuit FB2, a sampling amplifying circuit FB3, a sampling amplifying circuit FB4, a sampling amplifying circuit FB5 and a sampling amplifying circuit FB6, one ends of a current transformer L1, a current transformer L2, a current transformer L3, a current transformer L4 and a current transformer L5 are connected with a ground wire V0, taking the sampling amplifying circuit FB1 as an example, the other end of the current transformer L1 is respectively connected with a resistor R15, a resistor R16, a resistor R17 and a capacitor C15, the other ends of the resistor R15, the resistor R16 and the capacitor C15 are respectively connected with a ground wire V0, the other ends of the resistor R17, a positive electrode of a diode D2 and a negative input end of an operational amplifier U3 are respectively connected with a positive power supply V+10, the positive input end of the operational amplifier U3 is connected with the ground wire, the power supply of the operational amplifier U3 is respectively connected with the positive power supply V+10 and a negative power supply V-10, the output end of the operational amplifier U3 is connected with the positive electrode of the diode D3, the other ends of the resistor R18 are connected with a resistor R19 and the negative electrode of the diode D3, the other ends of the resistor R19 are connected with the positive electrode of an electrolytic capacitor C7 and the capacitor C16, the negative electrode of the electrolytic capacitor C7 is connected with the ground wire V0, and the other ends of the capacitor C16 are connected with the ground wire V0, the positive electrode of the electrolytic capacitor C7 is also used as the output end of the sampling amplifying circuit FB1 to be connected with the U1 pin 25 of the single chip microcomputer, the output end of the sampling amplifying circuit FB2 is connected with the U1 pin 26 of the single chip microcomputer, the output end of the sampling amplifying circuit FB3 is connected with the U1 pin 24 of the single chip microcomputer, the output end of the sampling amplifying circuit FB4 is connected with the U1 pin 22 of the single chip microcomputer, the output end of the sampling amplifying circuit FB5 is connected with the U1 pin 21 of the single chip microcomputer, the output end of the sampling amplifying circuit FB6 is connected with the U1 pin 20 of the single chip microcomputer,
the single chip microcomputer pin U1/44 of the single chip microcomputer U1 is connected with the shift latch pin U7/11 of the shift latch U7 and the shift latch pin U8/11 of the shift latch U8, the single chip microcomputer pin U1/43 of the single chip microcomputer U1 is connected with the shift latch pin U7/12 of the shift latch U7 and the shift latch pin U8/12 of the shift latch U8, the single chip microcomputer pin U1/37 of the single chip microcomputer U1 is connected with the shift latch pin U7/14 of the shift latch U7, the shift latch pin U7/3 of the shift latch U7 is connected with the bit pin of the four-bit nixie tube SMG, the shift latch pin U7/2 of the shift latch U7 is connected with the ten-bit pin of the four-bit nixie tube SMG, the shift latch pin U7/1 of the shift latch U7 is connected with the hundred-bit pin of the four-bit nixie tube SMG, the shift latch pin U7/15 of the shift latch U7 is connected with the kilobit pin of the four-bit nixie tube SMG, the shift latch pin U7/9 and the shift latch pin U7/16 of the shift latch U7 are connected with the positive power supply V+5, the shift latch pin U7/8 and the shift latch pin U7/13 of the shift latch U7 are connected with the ground wire VV0, the shift latch pin U8/15 of the shift latch U8 is connected with the resistor R34, the other end of the resistor R34 is connected with the light emitting diode D11, the light emitting diode D12 and the pin a of the four-bit nixie tube SMG, the shift latch pin U8/1 of the resistor R33 is connected with the light emitting diode D13, the light emitting diode D14 and the pin b of the four-bit nixie tube SMG, the shift latch pin U8/2 of the shift latch U8 is connected with a resistor R32, the other end of the resistor R32 is connected with a light emitting diode D15, a light emitting diode D16 and a pin c of a four-bit nixie tube SMG, the shift latch pin U8/3 of the shift latch U8 is connected with a resistor R31, the other end of the resistor R31 is connected with a light emitting diode D17, a light emitting diode D18 and a pin D of a four-bit nixie tube SMG, the shift latch pin U8/4 of the shift latch U8 is connected with a resistor R30, the other end of the resistor R30 is connected with a light emitting diode D19, a light emitting diode D20 and a pin e of the four-bit nixie tube SMG, the shift latch U8/5 of the shift latch U29 is connected with a light emitting diode D21, a light emitting diode D22 and a pin f of the four-bit nixie tube SMG, the other end of the shift latch U8 is connected with a resistor R28, the other end of the resistor R28 is connected with a pin g of the four-bit nixie tube SMG, the shift latch U8/7 of the shift latch U8 is connected with a resistor R27, the shift latch U7/7 of the shift latch U7 is connected with a pin 7 and the other end of the shift latch U7/7 of the shift latch U7 is connected with a power supply pin 7,
the control circuit is characterized in that a singlechip pin U1/8 of the singlechip U1 in the control circuit is connected with a resistor R40, the other end of the resistor R40 is connected with a resistor R49 and a host starting button S1, the singlechip pin U1/8 of the singlechip U1 is connected with a resistor R39, the other end of the resistor R39 is connected with a resistor R48 and a host starting button S2, the singlechip pin U1/8 of the singlechip U1 is connected with a resistor R38, the other end of the resistor R38 is connected with a resistor R47 and a host starting button S3, the singlechip pin U1/8 of the singlechip U1 is connected with a resistor R37, the other end of the resistor R37 is connected with a resistor R46 and a host starting button S4, the singlechip pin U1/8 of the singlechip U1 is connected with a resistor R36, the other end of the resistor R36 is connected with a resistor R45 and a host starting button S5, the singlechip pin U1/8 of the singlechip U1 is connected with a resistor R35, the other end of the resistor R35 is connected with a resistor R44 and a host starting button S6, the single-chip microcomputer U1 pin U1/4 of the single-chip microcomputer U1 is connected with a resistor R41, the other end of the resistor R41 is connected with a base electrode of a triode BG1, a collector electrode of the triode BG1 is connected with a relay K1, a diode D5 and an electrolytic capacitor C22, the other ends of the relay K1, the diode D5 and the electrolytic capacitor C22 are connected with a positive power supply V+12, an emitter electrode of the triode BG1 is connected with a ground wire V0, the single-chip microcomputer U1/3 of the single-chip microcomputer U1 is connected with a resistor R42, the other end of the resistor R41 is connected with a base electrode of a triode BG2, a collector electrode of the triode BG2 is connected with a relay K2, a diode D6 and an electrolytic capacitor C23, the other ends of the relay K2, the diode D6 and the electrolytic capacitor C23 are connected with a positive power supply V+12, an emitter electrode of the triode BG2 is connected with a ground wire V0, the single-chip microcomputer U1/2 of the single-chip microcomputer U1 is connected with a resistor R43, the other end of the resistor R43 is connected with a base electrode of the triode BG3, the collector of the triode BG3 is connected with the relay K3, the diode D7 and the electrolytic capacitor C24, the other ends of the relay K3, the diode D7 and the electrolytic capacitor C24 are connected with the positive power supply V+12, the emitter of the triode BG3 is connected with the ground wire V0, the pin U1/40 of the singlechip U1 is connected with the resistor R50, the other end of the resistor R50 is connected with the base of the triode BG4, the collector of the triode BG4 is connected with the relay K4, the diode D8 and the electrolytic capacitor C25, the other ends of the relay K4, the diode D8 and the electrolytic capacitor C24 are connected with the positive power supply V+12, the emitter of the triode BG4 is connected with the ground wire V0, the pin U1/39 of the singlechip U1 is connected with the resistor R51, the other end of the resistor R51 is connected with the base of the triode BG5, the collector of the triode BG5 is connected with the relay K5, the diode D9 and the electrolytic capacitor C26, the other ends of the relay K5, the diode D9 and the electrolytic capacitor C26 are connected with the positive power supply V+12, the emitter of the triode BG5 is connected with a ground wire V0, the U1/38 of the U1 single chip microcomputer is connected with a resistor R52, the other end of the resistor R52 is connected with the base electrode of the triode BG6, the collector of the triode BG6 is connected with a relay K6, a diode D10 and an electrolytic capacitor C27, the other end of the relay K6, the diode D10 and the other end of the electrolytic capacitor C27 are connected with a positive power supply V+12, the emitter of the triode BG6 is connected with the ground wire V0, the U1/1 of the U1 single chip microcomputer is connected with a resistor R21, the U1/32 of the U1 single chip microcomputer is connected with a resistor R20, the U1/41 of the U1 single chip microcomputer is connected with a resistor R22, the U1/23 of the U1 single chip microcomputer is connected with a resistor R23, the other end of the resistor R23 is connected with a resistor 24, the diode D4 is positive, a capacitor C18, a capacitor C19 and an inductor PL1, a resistor R20, a resistor R21, a resistor R22, resistor 24 and diode D4 are connected at their negative terminals to positive power supply V +5, capacitor C18 and capacitor C19 are connected at their other terminals to ground line V0, inductor PL1 is connected at its other terminal to ground line V0 for connection to air pressure switch 11,
a phase power supply U in the phase sequence circuit is connected with a resistor R7, the other end of the resistor R7 is connected with a capacitor C28, a resistor R9 and the positive electrode of a light emitting diode of an optocoupler U5, a W C phase power supply is connected with a resistor R8, the other end of the resistor R8 is connected with a capacitor C29, a resistor R10 and the negative electrode of a light emitting diode of the optocoupler U6, a B phase power supply V is connected with the capacitor C28, the capacitor C29, the resistor R9, the other end of the resistor R10 and the negative electrode of the light emitting diode of the optocoupler U5 and the positive electrode of the light emitting diode of the optocoupler U6, the collector of the optocoupler U5 is connected with a resistor R13 and a resistor R11, the other end of the resistor R13 is connected with a positive power supply V+5, the other end of the resistor R11 is connected with a single chip microcomputer pin U1/35 of the single chip microcomputer U1,
in the power circuit, a primary winding of a power transformer T is respectively connected with a B-phase power supply V and a C-phase power supply W, a secondary winding of the power transformer is respectively connected with a pin DB1/1 of a bridge rectifier DB1 and a pin DB1/2 of the bridge rectifier DB1, a central line of the secondary winding of the power transformer is connected with a ground wire V0, the pin DB1/3 of the bridge rectifier DB1 is an output positive power supply V+12 and is simultaneously connected with the positive pole of an electrolytic capacitor C1, a capacitor C8, a resistor R1 and a voltage stabilizing integrated block U3 pin DB1/1 of a voltage stabilizing integrated block U3, the pin DB1/4 of the bridge rectifier DB1 is connected with the negative pole of an electrolytic capacitor C2 and a resistor R2, the other end of the resistor R1 is connected with the positive pole of an electrolytic capacitor C5, the negative pole of the capacitor C11 and the negative pole of a voltage stabilizing tube WD1 are connected with the output positive power supply V+10, the negative pole of the electrolytic capacitor C5 and the other end of the capacitor C11 are connected with the negative pole of the capacitor C4, the positive pole of the resistor R2 is connected with the positive pole of the voltage stabilizing tube WD1 and the positive pole of the voltage stabilizing tube WD2 is connected with the positive ground wire of the voltage stabilizing capacitor C0,
the peripheral circuit of the singlechip is provided with a capacitor C12 which is connected with a crystal oscillator Y1 and a singlechip pin U1/31 of the singlechip U1, the other end of the capacitor C12 is connected with the other end of the crystal oscillator Y1 and the singlechip pin U1/30 of the singlechip U1, the other end of the capacitor C12 and the capacitor C13 are connected with a ground wire VV0, the singlechip pin U1/7 of the singlechip U1 and the singlechip pin U1/28 of the singlechip U1 are connected with a capacitor C20, a capacitor C21 and a positive power supply V+5, the singlechip pin U1/6 of the singlechip U1 and the singlechip pin U1/29 of the singlechip U1 are connected with the other end of the capacitor C20, the other end of the capacitor C21 and the ground wire VV0, the other end of the CJ1-CJ2 current transformer signal switching plug-in CJ1 is connected with a resistor R25, the other end of the resistor R26 is connected with the singlechip pin U1/5 of the singlechip U1, the current transformer signal switching plug-in CJ1 is connected with the ground wire VV0,
a three-phase power supply A phase power supply U in a main circuit of a main machine of the mute oil-free air compressor is respectively connected with a contactor KM1, a contactor KM2, a contactor KM3, a contactor KM4, a contactor KM5, an upper contact of a contactor KM6, a contactor KM1, a contactor KM2, a contactor KM3, a contactor KM4, a contactor KM5 and a coil of a contactor KM6, a B phase power supply V is respectively connected with the contactor KM1, the contactor KM2, the contactor KM3, the contactor KM4, the contactor KM5 and the upper contact of the contactor KM6, the C-phase power supply W is respectively connected with the upper contacts of the contactor KM1, the contactor KM2, the contactor KM3, the contactor KM4, the contactor KM5 and the contactor KM6 and the relay K1, the relay K2, the relay K3, the relay K4, the relay K5 and the relay K6, the other end of the coil of the contactor KM1 is connected with the other end of the K1, the other end of the coil of the contactor KM2 is connected with the other end of the K2, the other end of the coil of the contactor KM3 is connected with the other end of the K3, the other end of the coil of the contactor KM4 is connected with the other end of the K4, the other end of the coil of the contactor KM5 is connected with the other end of the K5, the other end of the coil of the contactor KM6 is connected with the other end of the coil of the K6,
in the oil-free air compressor device structure, a first mute oil-free air compressor host (1), a second mute oil-free air compressor host (2), a third mute oil-free air compressor host (3), a fourth mute oil-free air compressor host (4), a fifth mute oil-free air compressor host (5) and a sixth mute oil-free air compressor host (6) are distributed on the upper part of an air storage tank (8), a pressure gauge (9), a safety valve (10), an air pressure switch (11), a storage tank air outlet pipe (13) and an air outlet ball valve (14) are combined into a whole, an intelligent controller (7) is arranged on one side of the air storage tank (8), a control switch (S7), a four-bit nixie tube SMG, a host starting button and a light emitting diode are arranged on a panel of the intelligent controller (7), the single chip microcomputer U1 processes and realizes full-automatic intelligent control of the three-phase mute oil-free air compressor through the main circuit control of the mute oil-free air compressor, phase sequence protection, phase interruption protection and voltage protection are carried out, the working voltage, phase sequence detection and fault current are displayed through the four-bit nixie tube SMG, the LED D11-D22 indicates green operation and red fault, the CJ1 and the CJ2 switch current transformer sampling signals, the host start button S1 or the host start button S2, the host start button S3, the host start button S4, the host start button S5 and the host start button S6 are started in sequence in time delay, and when the pressure reaches a set value, all the mute oil-free air compressor hosts can be automatically stopped in sequence in time delay, when the pressure is low to a certain value, all the silent oilless air compressor main machines are automatically started in sequence in a delayed mode, and the control switch S7 is a master switch.
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Effective date of registration: 20191230 Address after: 325200, Zhejiang, Ruian Province on the south side of the street, Jiang River standard factory building, light industrial zone ninth East first four floor Tai Tai Electrical Appliance Co., Ltd. Applicant after: Gongtai Electric Co.,Ltd. Address before: 325200, Zhejiang, Ruian Province on the south side of the street, Jiang River standard factory building, light industrial zone ninth East first four floor Tai Tai Electrical Appliance Co., Ltd. Applicant before: Cai Fuhan |
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