CN204270159U - Evaporator level gauging control system - Google Patents
Evaporator level gauging control system Download PDFInfo
- Publication number
- CN204270159U CN204270159U CN201420239171.5U CN201420239171U CN204270159U CN 204270159 U CN204270159 U CN 204270159U CN 201420239171 U CN201420239171 U CN 201420239171U CN 204270159 U CN204270159 U CN 204270159U
- Authority
- CN
- China
- Prior art keywords
- evaporator
- liquid level
- steam drum
- steam
- conductivity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a kind of evaporator level gauging control system, conductivity electrode is mainly installed at evaporator normal production liquid level place syrup liquid level in evaporator is measured; Meanwhile, by setting up pan feeding electromagnetic flowmeter, discharging electromagnetic flowmeter, juice vapour throttling orifice plate flowmeter, discharging automatic regulating valve, evaporation liquid level, evaporator pan feeding flow and juice steam flow amount three impulses is adopted to control; Steam drum steam chest temperature sensor and steam drum dome pressure transmitter are also installed respectively by evaporator steam drum, steam chest place, compensate with reference to steam drum temperature and dome pressure, correct evaporation liquid level; In addition, a conductivity sensor installed by steam drum lower end material, by measuring syrup conductivity and measuring syrup brix according to conductivity-brix relational model.The utility model structure is simple, strong adaptability, can solve the evaporator level gauging problem that operating mode is complicated and changeable, and its Survey control is accurate, safe and reliable, advanced technology, economical rationality.
Description
Technical field
The utility model belongs to evaporator observation and control technology field, particularly relates to a kind of evaporator level gauging control system.
Background technology
Zhi Lian workshop, sugar refinery evaporate station is the center of hot systems, is again the nerve center of sugar refining technology process, not only undertakes the task of concentrated syrup, and the juice vapour produced in evaporation process also will be utilized for heating and boiling the front and back operations such as sugar, and front and back are connected, all linked with one another.Therefore, if evaporation is unstable, production run will be absorbed in vicious cycle.
Vapo(u)rization system operation controls most important link: ensure that in evaporator, syrup is in stable low liquid level state all the time, to play its maximum evaporation performance.Significantly liquid fluctuating, not only affect evaporation performance, cause as liquid level is too low sucrose coking make syrup and finished product painted, have a strong impact on product quality, the too high then hydrostatic pressures losses of liquid level is large, reduce vapo(u)rization system heat transfer effective temperature difference, even can run sugar, to such an extent as to have a strong impact on whole Closed Circulation in Sugar Production working ability, product quality and energy resource consumption." vapo(u)rization system " is called as the second boiler in sugar manufacturing industry, in whole Closed Circulation in Sugar Production line, play decisive role.
Evaporator liquid level on market today generally adopts double flanges differential pressure transmitter or two cover list flange liquid level transmission device to be aided with vapor pressure and measures, this method is only suitable for the tank fill level measuring not high, the liquid level geo-stationary of boiling intensity, and cannot measure that boiling intensity is large, foam is more, syrup brix and density constantly change, boil sugar and bleed and the operating mode evaporator liquid level complicated and changeable such as to change greatly, steam drum temperature and pressure constantly change, and transmitter meter directly contacts syrup fouling and easily damages, safeguard extremely inconvenient.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of structure simple, adaptable evaporator level gauging control system, and the level gauging being mainly used in sugar manufacturing industry shell and tube heating evaporation (tank) system or other industry correlation type evaporator controls.
For solving the problems of the technologies described above, the utility model by the following technical solutions: evaporator level gauging control device, mainly comprises at least one conductivity electrode, for measuring syrup liquid level in evaporator.
Conductivity electrode has two at least, is respectively used to measure production liquid level normal in evaporator syrup liquid level that is minimum and highest point.
Conductivity electrode has four at least, wherein measures for the syrup liquid level between and highest point minimum to production liquid level normal in evaporator for two.
Above-mentioned evaporator level gauging control device, also comprises evaporator pan feeding electromagnetic flowmeter, evaporator discharging electromagnetic flowmeter, juice vapour throttling orifice plate flowmeter, evaporator discharging automatic regulating valve, evaporator steam drum steam chest temperature sensor and evaporator steam drum dome pressure transmitter, evaporator material conductivity concentration meter.
Conductivity electrode, evaporator pan feeding electromagnetic flowmeter, evaporator discharging electromagnetic flowmeter, juice vapour throttling orifice plate flowmeter, evaporator discharging automatic regulating valve, evaporator steam drum steam chest temperature sensor are all connected with PLC or DCS system with evaporator steam drum dome pressure transmitter, evaporator material conductivity concentration meter.
Evaporator level gauging control system, mainly comprises evaporator and the conductivity electrode being arranged on evaporator normal production liquid level place; Evaporator feeding mouth and discharging opening install pan feeding electromagnetic flowmeter, discharging electromagnetic flowmeter respectively, evaporator juice vapour outlet installs juice vapour throttling orifice plate flowmeter, evaporator discharging opening installs discharging automatic regulating valve, and evaporator steam drum, steam chest place install steam drum steam chest temperature sensor and steam drum dome pressure transmitter, evaporator material conductivity concentration meter respectively; Conductivity electrode, pan feeding electromagnetic flowmeter, discharging electromagnetic flowmeter, juice vapour throttling orifice plate flowmeter, discharging automatic regulating valve, steam drum steam chest temperature sensor are all connected with PLC or DCS system with steam drum dome pressure transmitter, evaporator material conductivity concentration meter.
Conductivity electrode has four at least, wherein two are respectively used to measure production liquid level normal in evaporator syrup liquid level that is minimum and highest point, measure for other two for the syrup liquid level between and highest point minimum to production liquid level normal in evaporator.
The problems existed are controlled for current evaporator level gauging, inventor has devised a kind of evaporator level gauging control system, conductivity electrode (electric contact) is mainly installed at evaporator normal production liquid level place syrup liquid level in evaporator is measured; Meanwhile, by setting up pan feeding electromagnetic flowmeter, discharging electromagnetic flowmeter, juice vapour throttling orifice plate flowmeter, discharging automatic regulating valve, evaporation liquid level, evaporator pan feeding flow and juice steam flow amount three impulses is adopted to control; Steam drum steam chest temperature sensor and steam drum dome pressure transmitter are also installed respectively by evaporator steam drum, steam chest place, compensate with reference to steam drum temperature and dome pressure, correct evaporation liquid level; In addition, a conductivity concentration meter installed by steam drum lower end material, by measuring syrup conductivity and measuring syrup brix according to conductivity-brix relational model.
The utility model has following outstanding advantages:
<1> adopts conductivity type contact electrode pair syrup actual liquid level to carry out directly accurately measuring, can solve seethe with excitement that intensity is large, foam is more, syrup brix and density constantly change, boil sugar bleeds and the operating mode evaporator level gauging problem complicated and changeable such as to change greatly, steam drum temperature and pressure constantly change;
<2> conductivity electrode is placed in evaporator outside, and conductivity electrode both end voltage is safe voltage, prevent instrument fouling malfunctioning or damage, safe and reliable, easy to maintenance;
<3> conductance rod directly contacts evaporator actual liquid level, and measure safe and reliable, electric contact is sturdy and durable, Maintenance free;
<4> tradition Three-value control evaporator liquid level is unstable, and the utility model adopts evaporator pan feeding flow, liquid level and steam flow three impulses to control evaporator liquid level, control accuracy is high, safe and reliable, advanced technology, economical rationality;
<5> sets up boiling mathematical model with steam drum and juice room temperature, pressure and carries out level fluctuation compensation, and level gauging is accurate;
<6> is converted to brix unit by syrup conductivity measurement, each tank can install conductivity rod, enforcement is simple, measurement is accurate, very big saving cost, cost performance is high, also solves sugar refinery evaporator now and only installs the problems such as concentration meter cost is higher, installation inconvenience in end effect;
<7> adopts PLC or DCS system measure instrument signal and control, advanced technology.
Accompanying drawing explanation
Fig. 1 is the using state schematic diagram of the utility model evaporator level gauging control system (single tank).
Fig. 2 is the using state schematic diagram of the utility model evaporator level gauging control system (evaporator is imitated in sugar refinery I ~ V).
In figure: 1 evaporator, 2 conductivity electrode, 3 conductivity concentration meters, 4 pan feeding electromagnetic flowmeters, 5 discharging electromagnetic flowmeters, 6 juice vapour throttling orifice plate flowmeters, 7 automatic regulating valves, 8 steam drum steam chest temperature sensors, 9 steam drum dome pressure transmitters.
Embodiment
As depicted in figs. 1 and 2, evaporator level gauging control system, mainly comprise evaporator 1 and be arranged on the conductivity electrode 2 that I ~ V imitates evaporator normal production liquid level place, conductivity electrode is used for measuring syrup liquid level in evaporator, because containing impurity in the massecuite of purity lower than 90, can conduct electricity, the size of conductive capability is relevant with concentration, viscosity again.During without liquid level, conductivity is 0, when having a syrup liquid level, conductivity is a certain numerical value, and by conductivity electrode liquid level (switching value) signal by setting up D/A number revolving die mathematical model, electric contact liquid level signal is converted to continuous print analog quantity liquid level quantities 0 ~ 100%, liquid level is true and reliable, to adopt FUZZY ALGORITHMS FOR CONTROL accurately to control evaporator liquid level.Evaporator feeding mouth and discharging opening install pan feeding electromagnetic flowmeter 4, discharging electromagnetic flowmeter 5 respectively, evaporator juice vapour outlet installs juice vapour throttling orifice plate flowmeter 6, evaporator discharging opening is installed discharging automatic regulating valve 7 pairs of liquid levels and is automatically controlled, and adopts evaporation liquid level, evaporator pan feeding flow and juice steam flow amount three impulses to control; Evaporator steam drum, steam chest place install steam drum steam chest temperature sensor 8 and steam drum dome pressure transmitter 9 respectively, measure respectively to steam drum, steam chest temperature and pressure, compensate evaporation liquid level, correct; Steam drum lower end syrup installs a conductivity concentration meter 3, by measuring syrup conductivity and according to conductivity-brix relational model, measuring syrup brix; Conductivity electrode, pan feeding electromagnetic flowmeter, discharging electromagnetic flowmeter, juice vapour throttling orifice plate flowmeter, discharging automatic regulating valve, steam drum steam chest temperature sensor are all connected with PLC or DCS system with steam drum dome pressure transmitter, conductivity concentration meter, and Real-time Collection conductance liquid level signal, flow signal, automatic regulating valve, temperature and pressure signal are to realize accurately controlling liquid level.
Wherein, conductivity electrode can install many according to I ~ V effect evaporator actual liquid level situation, as conductivity electrode has four, wherein two are respectively used to measure production liquid level normal in evaporator syrup liquid level that is minimum and highest point, measure for other two for the syrup liquid level between and highest point minimum to production liquid level normal in evaporator.
Claims (2)
1. an evaporator level gauging control system, is characterized in that the conductivity electrode mainly comprising evaporator He be arranged on evaporator normal production liquid level place; Evaporator feeding mouth and discharging opening install pan feeding electromagnetic flowmeter, discharging electromagnetic flowmeter respectively, evaporator juice vapour outlet installs juice vapour throttling orifice plate flowmeter, evaporator discharging opening installs discharging automatic regulating valve, and evaporator steam drum, steam chest place install steam drum steam chest temperature sensor and steam drum dome pressure transmitter, evaporator material conductivity concentration meter respectively; Described conductivity electrode, pan feeding electromagnetic flowmeter, discharging electromagnetic flowmeter, juice vapour throttling orifice plate flowmeter, discharging automatic regulating valve, steam drum steam chest temperature sensor are all connected with PLC or DCS system with steam drum dome pressure transmitter, evaporator material conductivity concentration meter.
2. evaporator level gauging control system according to claim 1, it is characterized in that: described conductivity electrode has four at least, wherein two are respectively used to measure production liquid level normal in evaporator syrup liquid level that is minimum and highest point, measure for other two for the syrup liquid level between and highest point minimum to production liquid level normal in evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420239171.5U CN204270159U (en) | 2014-05-12 | 2014-05-12 | Evaporator level gauging control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420239171.5U CN204270159U (en) | 2014-05-12 | 2014-05-12 | Evaporator level gauging control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204270159U true CN204270159U (en) | 2015-04-15 |
Family
ID=52805015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420239171.5U Expired - Fee Related CN204270159U (en) | 2014-05-12 | 2014-05-12 | Evaporator level gauging control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204270159U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995545A (en) * | 2014-05-30 | 2014-08-20 | 广西南宁协糖数控科技有限公司 | Automatic evaporation control system |
| CN107702749A (en) * | 2017-10-16 | 2018-02-16 | 中国核动力研究设计院 | A kind of liquid waste evaporator multiparameter measuring device and measuring method |
-
2014
- 2014-05-12 CN CN201420239171.5U patent/CN204270159U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995545A (en) * | 2014-05-30 | 2014-08-20 | 广西南宁协糖数控科技有限公司 | Automatic evaporation control system |
| CN107702749A (en) * | 2017-10-16 | 2018-02-16 | 中国核动力研究设计院 | A kind of liquid waste evaporator multiparameter measuring device and measuring method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204270159U (en) | Evaporator level gauging control system | |
| CN104474988A (en) | Neutralization reaction device and automatic control method | |
| CN203287064U (en) | Power plant heating steam supply flow measuring device based on heat balance | |
| CN102175351A (en) | Device for testing thermal performance and fluid resistance of liquid-liquid heat exchanger | |
| CN211476789U (en) | Real-time control system for end difference of low-pressure heater | |
| CN107028494A (en) | A kind of intelligent drinking machine based on water detecting system | |
| CN207704285U (en) | The device of outer circulation automatic measuring and controlling pH | |
| CN104571161A (en) | Automatic liquid level control system for sugarcane juice steaming tank | |
| CN203799249U (en) | Control system used for balancing infiltration water in press production process | |
| CN205094170U (en) | Drinkable automation of family ware of heating up water | |
| CN205879907U (en) | Multi -functional on -line monitoring device of thermal power factory heat exchanger | |
| CN201680567U (en) | Thermostatic medium hot water system for lysozyme fermentation liquid dispensing cylinder | |
| CN203259205U (en) | Measuring device for turbine high and medium pressure cylinder shaft seal overflowed steam flow | |
| CN207337232U (en) | One kind control hydraulic pressure device | |
| CN209147425U (en) | A kind of storage tank | |
| CN208026885U (en) | Semi-automatic evaporation from water surface measuring device | |
| CN209131777U (en) | Indirect type monitors the device of evaporator water level and evaporation capacity automatically | |
| CN112628834A (en) | Air source heat pump central heating intelligent system | |
| CN217931506U (en) | Uninterrupted detection device for hydrogen conductivity of steam and water | |
| CN214540536U (en) | Self-adaptive water inlet control device for water tank | |
| CN205939719U (en) | Constant voltage temperature regulation system | |
| CN201152847Y (en) | Evaporation pot syrup brix detection apparatus | |
| CN219640492U (en) | Novel surface glue cooling device | |
| CN101324457A (en) | Intelligent detection method of steam tiny flow quantity | |
| CN220418536U (en) | Externally-discharged saturated steam flow measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20160512 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |