CN201320494Y

CN201320494Y - Electrostatic dedusting controller networked by Ethernet and RS485

Info

Publication number: CN201320494Y
Application number: CNU2008203025918U
Authority: CN
Inventors: 奚永新; 蔡周兵; 郭炎鹏
Original assignee: HANGZHOU TIANMING ELECTRONICS CO Ltd
Current assignee: HANGZHOU TIANMING ELECTRONICS CO Ltd
Priority date: 2008-10-31
Filing date: 2008-10-31
Publication date: 2009-10-07
Anticipated expiration: 2018-10-31

Abstract

The utility model relates to an electrostatic dedusting controller networked by Ethernet and RS485, which comprises a central processing unit (CPU), the CPU is connected with a plurality of DCS/ vibration/heating circuits, a plurality of auxiliary input circuits, a contactor, a circuit breaker, an electric field, light gas/ heavy gas, a low oil level signal input terminal, an output terminal of an arithmetic amplification unit, a controlled silicon, a secondary current/ voltage output terminal, wherein, the input terminal of the arithmetic amplification unit is connected with a plurality of temperature sampling signals, a primary current/ a voltage sampling signal and the secondary current/ the voltage sampling signal; the CPU is also connected with an Ethernet interface circuit and an RS485 interface circuit. The electrostatic dedusting controller networked by Ethernet and RS485 can control the start and stop equipment, the parameter display/setting and the switching of running modes, the alarm/ failure display through the remote terminal monitor and the humanified user device interface so as to realize on-site monitoring, conduct factory-grade monitoring by industrial Ethernet and reduce the maintenance cost.

Description

Electrostatic precipitation controller by Ethernet and RS485 networking

Technical field

The utility model relates to a kind of electric precipitation controller, relates in particular to a kind of electrostatic precipitation controller by Ethernet and RS485 networking.

Background technology

The present dedusting control system that uses of the electric precipitation industry defective that is difficult to overcome below mainly existing based on 16 single-chip microcomputers designs: 1. function singleness, only have the high-pressure dust-cleaning function, must increase the low compression functions that PLC finishes system if think the normal operation of system; 2. the processor response speed is slow, is generally operational in about 8MHz, and the work static electric field of electric precipitation must be handled in the shortest time after puncturing, and facts have proved that 16 single-chip microcomputer Limited resources can't bear these tasks; 3. communication interface is single, is generally the RS485 communication, and no network communication function can not realize group's optimal control; 4. it is single to handle the anti-corona means of electric field, and generating is dizzy to be the main cause that electric field consumes excess energy, and the control system of single-chip microcomputer product does not have the algorithm of optimization to handle anti-corona problem at present, causes energy consumption than higher.

Summary of the invention

The utility model is in order to solve the problems of the technologies described above, a kind of electrostatic precipitation controller by Ethernet and RS485 networking is provided, it has the user device interface of hommization, can be by start and stop, the demonstration/setting of parameter and the switching of the method for operation of remote terminal watch-dog control appliance, the demonstration of warning/fault, the monitoring of realization field level reduces maintenance cost.

Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: the utility model comprises CPU, be connected with several DCS/ rapping/heater circuit on the described CPU, several is assisted input circuit, contactor, breaker, electric field, gently/heavy gas, low oil level status signal input, the output of computing amplifying unit, controllable silicon, secondary current/voltage output end, the input of described computing amplifying unit and several temperature sampling signal, primary current/voltage sampling signal, secondary current/voltage sampling signal links to each other, and also is connected with ethernet interface circuit and RS485 interface circuit on the described CPU.

As preferably, described CPU comprises 32 processor of single chip computer and the 32-bit number signal processor that is connected, described 32 processor of single chip computer link to each other with several DCS/ rapping/heater circuit, the auxiliary input circuit of several, and described ethernet interface circuit and RS485 interface circuit are connected on described 32 processor of single chip computer; Described 32-bit number signal processor is with described contactor, breaker, electric field, gently/heavily gas, low oil level status signal input, described computing amplifying unit, described controllable silicon, described secondary current/voltage output end link to each other.

As preferably, described DCS/ rapping/heater circuit has 15 the tunnel, and described auxiliary input circuit has 6 the tunnel, and described temperature sampling signal has 5 the tunnel.

The beneficial effects of the utility model are: 1, the user device interface of hommization, can be by start and stop, the demonstration/setting of parameter and the switching of the method for operation of remote terminal watch-dog control appliance, the demonstration of warning/fault, the monitoring of realization field level, also can carry out the factory level monitoring, reduce maintenance cost by EPA; 2, disposal ability is strong, response speed is fast, precision is high, good reliability; 3, the automatic measuring ability of electrostatic precipitation applied electric field supply and AC electricity frequency is fit to domestic and international any AC power frequency; 4, can in 1ms, catch flashover signal rapidly and accurately and finish processing according to the situation of change of secondary voltage in the electric field and secondary current; 5, parameter is uploaded download function flexibly, can be saved in local monitor end or current monitored controller in the local data of revising of RTM, also can be saved in other controller, can also download to the local monitor end to the data that controller is preserved.

Description of drawings

Fig. 1 is a kind of circuit catenation principle block diagram of the present utility model.

1.32 processor of single chip computer among the figure, 2.32 bit digital signal processors, 3.DCS/ rapping/heater circuit, 4. auxiliary input circuit, 5. contactor, breaker, electric field, light/heavy gas, low oil level status signal input, 6. computing amplifying unit, 7. temperature sampling signal, 8. primary current/voltage sampling signal, 9. secondary current/voltage sampling signal, 10. controllable silicon, 11. secondary currents/voltage output end, 12. ethernet interface circuit, the 13.RS485 interface circuit.

The specific embodiment

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment 1: a kind of electrostatic precipitation controller by Ethernet and RS485 networking of present embodiment, as shown in Figure 1, comprise 32 processor of single chip computer 1 and the 32-bit number signal processor 2 that are connected, be connected with 15 road DCS/ rapping/heater circuits 3 on 32 processor of

single chip computer

1,6 tunnel auxiliary input circuit 4 and ethernet interface circuit 12 and RS485 interface circuits 13,32-bit number signal processor 2 and contactor, breaker, electric field, gently/heavy gas, low oil level status signal input 5 links to each other, 32-bit number signal processor 2 also links to each other with the output of computing amplifying unit 6, the input of computing amplifying unit 6 and 5 road temperature sampling signals 7, primary current/voltage sampling signal 8, secondary current/voltage sampling signal 9 links to each other, 32-bit number signal processor 2 also with two controllable silicons 10, secondary current/voltage output end 11 links to each other.

The utility model is according to operating voltage and operating current in the detected electric cleaner, analytical calculation through 32 processor of single chip computer and 32-bit number signal processor, the best time output control signal is opened controllable silicon behind industrial frequency AC 380V power supply zero crossing, the process transformer boosts and the rectifier bridge rectification is powered to electric cleaner, on electric cleaner, form the high voltage electric field of 50kV～70kV, in the electric field air ionization under the high pressure effect, form charged particle on the dust of the electric field of flowing through of anion absorption, charged particle pole plate to electric field under the effect of high voltage electric field moves, discharge anion formation electric current after arriving pole plate, dust sticks on the pole plate, is reaching certain thickness after rapping is dropped in the ash bucket of collection dust.

The user device interface of the utility model hommization can realize field level monitoring and factory level monitoring by start and stop, the demonstration/setting of parameter and the switching of the method for operation of remote terminal watch-dog control appliance, the demonstration of warning/fault, reduces maintenance cost.

Claims

1. electrostatic precipitation controller by Ethernet and RS485 networking, it is characterized in that comprising CPU, be connected with several DCS/ rapping/heater circuit (3) on the described CPU, several is assisted input circuit (4), contactor, breaker, electric field, gently/heavy gas, low oil level status signal input (5), the output of computing amplifying unit (6), controllable silicon (10), secondary current/voltage output end (11), the input of described computing amplifying unit (6) and several temperature sampling signal (7), primary current/voltage sampling signal (8), secondary current/voltage sampling signal (9) links to each other, and also is connected with ethernet interface circuit (12) and RS485 interface circuit (13) on the described CPU.

2. the electrostatic precipitation controller by Ethernet and RS485 networking according to claim 1, it is characterized in that described CPU comprises 32 processor of single chip computer (1) and the 32-bit number signal processor (2) that is connected, described 32 processor of single chip computer (1) link to each other with several DCS/ rapping/heater circuit (3), the auxiliary input circuit (4) of several, and described ethernet interface circuit (12) and RS485 interface circuit (13) are connected on described 32 processor of single chip computer (1); Described 32-bit number signal processor (2) is with described contactor, breaker, electric field, gently/heavily gas, low oil level status signal input (5), described computing amplifying unit (6), described controllable silicon (10), described secondary current/voltage output end (11) link to each other.

3. the electrostatic precipitation controller by Ethernet and RS485 networking according to claim 1 and 2, it is characterized in that described DCS/ rapping/heater circuit (3) has 15 the tunnel, described auxiliary input circuit (4) has 6 the tunnel, and described temperature sampling signal (7) has 5 the tunnel.