CN205638883U - Desulfurizing tower frequency conversion economizer system - Google Patents
Desulfurizing tower frequency conversion economizer system Download PDFInfo
- Publication number
- CN205638883U CN205638883U CN201620506603.3U CN201620506603U CN205638883U CN 205638883 U CN205638883 U CN 205638883U CN 201620506603 U CN201620506603 U CN 201620506603U CN 205638883 U CN205638883 U CN 205638883U
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- China
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- desulfurizing tower
- plc control
- control system
- frequency conversion
- converter
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Abstract
The utility model relates to a desulfurizing tower frequency conversion economizer system, including sulfur dioxide detector, pH value detector, PLC control system, host computer, converter and circulating pump, PLC control system, converter and circulating pump connect gradually, sulfur dioxide detector, pH value detector and host computer all are connected to PLC control system. The utility model provides an instantaneous pick -up current of current desulfurizing tower circulating pump big, problem that operating power consumption is big.
Description
Technical field
This utility model relates to desulfurizing tower systems technology field, is specifically related to a kind of desulfurizing tower energy-saving and frequency-variable system
System.
Background technology
The Starting mode of desulfurizing tower circulating pump for directly initiating, star-angle reduced-voltage starting, auto-coupling voltage-reduction starting
Deng, instantaneous starting electric current is big, big to electric network influencing, is unfavorable for the properly functioning of other equipment.Start with
Rear desulfurizing tower circulating pump, with power frequency operation, absorbs serosity and is transported in desulfurizing tower with constant flow, work as tower
When interior sulfur dioxide concentration reduces, fraction slurries does not absorb the sulfur dioxide in flue gas, desulfurizing tower system
Electric energy will not be the most not only increased according to the circulating load of how many regulation circulating pumps of sulfur dioxide concentration
Consume, shorten the service life of equipment, and also enhance the pollution to electrical network.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of desulfurizing tower frequency conversion energy-saving system, and this is
System uses variable frequency starting mode, and starting current is little, not only makes circulating pump decrease on startup electrical network
Impact, and control circulation according to the concentration of sulfur dioxide in desulfurizing tower and the pH numerical value in circulatory pool
The circulating load of pump, thus reduce energy consumption.
The technical scheme that this utility model solves above-mentioned technical problem is as follows: a kind of desulfurizing tower energy-saving and frequency-variable system
System, including sulfur dioxide detector, pH value detector, PLC control system, host computer, converter and
Circulating pump, described PLC control system, converter and circulating pump be sequentially connected with, and described sulfur dioxide detects
Instrument, pH value detector and host computer are connected to described PLC control system.
The beneficial effects of the utility model are: this utility model is by using the variable frequency starting side of converter
Formula, starting current is little, not only makes circulating pump decrease the impact to electrical network on startup, and can basis
In desulfurizing tower, the pH numerical value in the concentration of sulfur dioxide and circulatory pool controls the circulating load of circulating pump, from
And reduce energy consumption.
On the basis of technique scheme, this utility model can also do following improvement.
Further, the signal output part of described sulfur dioxide detector is connected to the simulation of PLC control system
Signal input part.
Further, the signal output part of described pH value detector is connected to the simulation letter of PLC control system
Number input.
Further, the analog signal output of described PLC control system is connected to the signal of described converter
Input.
Further, described host computer is connected by radio communication with described PLC control system.
Using above-mentioned further scheme to provide the benefit that: by radio communication, host computer may be installed to be done
Public room, it is simple to observe, and reduce on-the-spot cabling, easy to operate.
Further, the incoming line of described converter and line outlet are mounted on magnet ring.
Above-mentioned further scheme is used to provide the benefit that: to not only reduce the harmonic high frequency produced by converter
Ripple is on instrument and the impact of equipment, and reduces cost.
Described host computer is PC, panel computer or mobile phone.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Being described principle of the present utility model and feature below in conjunction with accompanying drawing, example is served only for solving
Release this utility model, be not intended to limit scope of the present utility model.
As it is shown in figure 1, a kind of desulfurizing tower frequency conversion energy-saving system, including sulfur dioxide detector, pH value inspection
Surveying instrument, PLC control system, host computer, converter and circulating pump, sulfur dioxide detector signal is defeated
Go out end and pH value detector signal output part all by holding wire be connected to PLC control system simulation letter
Number input, host computer is connected by radio communication with PLC control system, in the man machine interface of host computer
Module can arrange parameter and control instruction to PLC control system, and meanwhile, scene is adopted by PLC control system
The signal of collection is uploaded to host computer after processing by analysis and shows, in order to observe, the mould of PLC control system
Intending signal output part and be connected to the control signal input of converter, the power input of converter uses
The commercial power of 380V, incoming line and line outlet at converter be mounted on magnet ring, the power supply of converter
Outfan is connected to the input supply terminal of circulating pump.
In this utility model, sulfur dioxide detector is arranged on the chimney breast of desulfurizing tower, detects desulfurizing tower
Interior sulfur dioxide concentration, pH value detector is arranged in circulatory pool, the pH numerical value in detection circulatory pool.
When this utility model uses, this system uses VFC, its operation principle to the control of circulating pump
For, first parameter and control instruction are set in the human-computer interface module of host computer, this parameter is desulfurizing tower
PH numerical value in interior sulfur dioxide concentration and circulatory pool, and control system by wireless communication transmissions to PLC
System, in the desulfurizing tower that PLC control system will detect the pH numerical value in sulfur dioxide concentration and circulatory pool with
Setting value compares, and regulates the frequency of converter and then control the circulating load of circulating pump after PID arithmetic.
Reach again environmental protection standard for economical operation, need to circulate according to sulfur dioxide concentration and pH numerical control
The circulating load of pump, when in desulfurizing tower, sulfur dioxide concentration is high and pH numerical value is low time in circulatory pool, frequency conversion
Device is with power frequency operation, and in desulfurizing tower, sulfur dioxide concentration is low and time in circulatory pool during pH numerical value height, becomes
Frequently device is with converting operation, thus reduces a large amount of energy consumption.Concrete processing procedure is to detect with sulfur dioxide
Sulfur dioxide concentration in instrument detection desulfurizing tower, the pH numerical value in pH value detector detection circulatory pool, and will
The current signal that the current signal of sulfur dioxide detector output and pH value detector export gives PLC control
The Analog input mModule of system processed, obtains and sulfur dioxide concentration and pH after A/D modular converter is changed
The digital quantity that numerical value is proportional, then compares with sulfur dioxide concentration setting value and pH setting value value
Relatively, according to pid control algorithm, error amount is calculated, gives analog output module by operation result,
After D/A modular converter is changed, become current signal, be used for controlling the output frequency of converter, thus control
The circulating load of circulating pump processed, reaches energy-saving effect.
On startup, can arrange converter Starting mode is soft start to this utility model, is opened by converter
Dynamic circulating pump, it is possible to reduce instantaneous starting electric current, the buffering temporary impact to electrical network, safeguard electrical network other
Equipment properly functioning, slows down the desulfurizing agent impact to desulphurization system pipeline in pipeline, making of extension device
Use the life-span.
When this utility model uses, the incoming line of described converter and line outlet are mounted on magnet ring, install additional
Magnet ring not only reduces the high-frequency harmonic produced by converter to instrument and the impact of equipment, and reduces
Cost.During the use of converter, general employing uses reactor to press down in the end of incoming cables of converter
High-frequency harmonic processed, reduces instrument and the interference of equipment, but reactor is for magnet ring, cost
Higher.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all
Within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, all
Within protection domain of the present utility model should be included in.
Claims (7)
1. a desulfurizing tower frequency conversion energy-saving system, it is characterised in that include sulfur dioxide detector, pH
Value detector, PLC control system, host computer, converter and circulating pump, described PLC control system,
Converter and circulating pump are sequentially connected with, and described sulfur dioxide detector, pH value detector and host computer all connect
It is connected to described PLC control system.
A kind of desulfurizing tower frequency conversion energy-saving system, it is characterised in that described
The signal output part of sulfur dioxide detector is connected to the input end of analog signal of PLC control system.
A kind of desulfurizing tower frequency conversion energy-saving system, it is characterised in that described
The signal output part of pH value detector is connected to the input end of analog signal of PLC control system.
A kind of desulfurizing tower frequency conversion energy-saving system, it is characterised in that described
The analog signal output of PLC control system is connected to the signal input part of described converter.
A kind of desulfurizing tower frequency conversion energy-saving system, it is characterised in that described
Host computer is connected by radio communication with described PLC control system.
A kind of desulfurizing tower frequency conversion energy-saving system, it is characterised in that described
The incoming line of converter and line outlet are mounted on magnet ring.
A kind of desulfurizing tower frequency conversion energy-saving system, it is characterised in that described
Host computer is PC, panel computer or mobile phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620506603.3U CN205638883U (en) | 2016-05-27 | 2016-05-27 | Desulfurizing tower frequency conversion economizer system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620506603.3U CN205638883U (en) | 2016-05-27 | 2016-05-27 | Desulfurizing tower frequency conversion economizer system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205638883U true CN205638883U (en) | 2016-10-12 |
Family
ID=57051735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620506603.3U Active CN205638883U (en) | 2016-05-27 | 2016-05-27 | Desulfurizing tower frequency conversion economizer system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205638883U (en) |
-
2016
- 2016-05-27 CN CN201620506603.3U patent/CN205638883U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |