EP1740283A1 - Systeme de commande du traitement de l'eau totalement automatise - Google Patents

Systeme de commande du traitement de l'eau totalement automatise

Info

Publication number
EP1740283A1
EP1740283A1 EP04812499A EP04812499A EP1740283A1 EP 1740283 A1 EP1740283 A1 EP 1740283A1 EP 04812499 A EP04812499 A EP 04812499A EP 04812499 A EP04812499 A EP 04812499A EP 1740283 A1 EP1740283 A1 EP 1740283A1
Authority
EP
European Patent Office
Prior art keywords
water
boiler
control system
control
product
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.)
Withdrawn
Application number
EP04812499A
Other languages
German (de)
English (en)
Other versions
EP1740283A4 (fr
Inventor
Douglas M. Thom
Gary W. Lum
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sylvan Source Inc
Original Assignee
Sylvan Source Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sylvan Source Inc filed Critical Sylvan Source Inc
Publication of EP1740283A1 publication Critical patent/EP1740283A1/fr
Publication of EP1740283A4 publication Critical patent/EP1740283A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
    • G01F23/18—Indicating, recording or alarm devices actuated electrically
    • G01F23/185—Indicating, recording or alarm devices actuated electrically for discrete levels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/42—Regulation; Control
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B35/00—Control systems for steam boilers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
    • F22D5/26—Automatic feed-control systems
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
    • G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means

Definitions

  • Water purification technology is rapidly becoming an essential aspect of modem life as conventional water resources become increasingly scarce; as municipal distribution systems for potable water deteriorate with age; as increased water usage depletes wells and reservoirs, causing saline water contamination; and as further contamination occurs in conventional resources from intensive agriculture, from gasoline additives, and even from heavy toxic metals, leading to increasing and objectionable levels of germs and bacteria, salts, MTBE, chlorates and perchlorates, arsenic, mercury, and chemicals used to disinfect potable water, such as chlorinated compounds.
  • RO reverse osmosis
  • filtration and chemical treatment rarely are able to handle the diverse range of water contaminants, and even though they are commercially available, they often require multiple treatment stages or combination of various technologies to achieve acceptable water quality.
  • UV light irradiation or ozone treatment can be effective against viruses and bacteria, but seldom remove other contaminants, such as dissolved gases, many salts, hydrocarbons, and insoluble solids.
  • Most distillation technologies are generally superior at removing multiple contaminants, but unless they include selective steam separation systems, are still unable to handle all types of contaminants.
  • the feed solenoid valve described in US Patent 6,663,770 is connected to a float valve in the boiler, instead of a pressure differential sensor as in the present invention.
  • float valves Being mechanico-electrical devices that operate at boiling temperature, float valves suffer from reliability issues related to abrasion, fatigue, and dimensional stability.
  • U.S. Patent 5,968,321 effects the control of the boiler level by means of a vertical sight-tube, which requires either visual monitoring of that function and is, thus, not a fully automated operation, or actuates an electrical photo-sensor signal that controls the inlet water valve.
  • U.S. Patent 6,582,563 describes an inlet solenoid valve that controls the inflow of water into a control tank that regulates the boiler level in a distillation system, and an electronically controlled drain valve that is operated by means of a timer.
  • Both, U.S. Patents 6,358,371 and 6,030,504 describe an electrical control system that includes a heater thermostat to control the boiler heater and a fan thermostat to control the cooling of a condenser.
  • U.S. Patent 6,009,238 describes an automatic shut-off thermostat to prevent a boiler in a distillation system from going dry.
  • U.S. Patent 5,833,812 describes a power unit for applying a voltage potential to heating probes immersed in a boiler, and a selector control for maintaining the water level in a boiler.
  • U.S. Patent 5,609,732 describes a thermostatic control to prevent the boiler from running dry during distillation.
  • U.S. Patent 5,286,350 describes float valves for controlling the water level in the boiler.
  • U.S. Patent 5,059,287 describes a temperature sensor above the water in the boiler to interrupt power input to the boiler.
  • U.S. Patent 4,415,075 describes a float switch and a low-level safety switch to control the level of water in a boiler.
  • U.S. Patent 4,110,170 describes a temperature sensor at the outlet of a boiler to control the inlet flow of water into the boiler.
  • U.S. Patent 3,980,526 describes a float sensor that is not directly linked to the inlet water flow into the boiler, but to a tubular stem.
  • the objective of the present invention is to provide a fully automated water processing control system, particularly one designed to operate with sophisticated water distillation systems that are continuous and that include degassing as well as selective steam separation features.
  • the operation of the boiler has three separate controls. It is controlled against running dry by a thermal overload switch. The proper level of water in the boiler is controlled by a boiler pressure switch that actuates a solenoid that controls the flow of inlet water. And the boiler is periodically drained by means of a boiler drain solenoid.
  • the operation of the product water tank is subject to three additional controls. There is a product level switch that prevents the product tank against overflow. A timer delay relay prevents water produced during transient conditions from entering the product container by means of a product output solenoid that directs product water either to the product container or a waste stream.
  • the overall system has a manual reset switch that resets the whole system to an initial state and three indicator lights that provide continuous operation al status. And to protect against electrical shorts, there is an overall power input fuse that protects against electrical shorts.
  • FIGURE 1 is a schematic and assembly diagram of the invention.
  • FIGURE 2 lists the control system input signals (INPUTS) and output controls (OUTPUTS) used by the system.
  • FIGURE 3 is the control system state diagram.
  • the invention comprises a fully automated system for controlling water purification units, particularly those that utilize distillation technology. Adequate control of distillation units is not trivial when such type of equipment operates continuously and must ensure proper product quality regardless of the contaminants present in the input water.
  • the controls required in a sophisticated water distillation system must address each individual treatment stage in the distillation unit, which normally comprise a boiler for generating steam, a selective steam separation stage, and condensation of clean steam into final pure water. Given the sequence of treatment stages, the controls provided in the present invention are mechanical, electrical, and electro-mechanical in nature.
  • Figure 1 illustrates the embodiment of multiple controls in the present invention and provides an example of an assembly diagram.
  • AC power is supplied by a standard three-pronged "AC PLUG”.
  • the "FUSE” (2) protects the overall circuit from shorts.
  • a manual "RESET SWITCH” (3) enables the user to override the automatic controls and reset the system to an initial state.
  • a "THERMAL OVERLOAD SWITCH” (1) normally osed, is located on the BOILER near the HEATER and will open circuit if the BOILER reaches an over- temperature condition.
  • the "PRODUCT LEVEL SWITCH” (4) monitors the output water container level and will open when the container is full.
  • the "BOILER PRESSURE SWITCH” (5) is a differential pressure switch which maintains the correct level in the BOILER.
  • the "INLET WATER SOLENOID” (6) controls the flow of inlet water into the system.
  • the "HEATER” (7) is an electrical heating element that heats water in the BOILER to boiling temperature.
  • the “BOILER DRAIN SOLENOID” (8) controls the draining of water from the BOILER.
  • the “TIMING DELAY RELAY” (9) generates a delayed timing pulse upon application of power to the input. The pulse delay time is set by a variable resistor.
  • the "PRODUCT OUTPUT SOLENOID” (10) controls the flow of water to either the OUTPUT WATER CONTAINER or to a waste container or tube.
  • the water processing unit is composed of a BOILER, STEAM STRIPPER AND SEPARATOR, AND CONDENSER units. Output water from the OUTPUT WATER CONTAINER is dispensed by the OUTPUT WATER FAUCET.
  • the Control System operates in 3 distinct states: "OFF”. This is the “Control state,” when no power is applied, RESET SWITCH is activated, or output water container is full (PRODUCT LEVEL SWITCH opened). In this state, the HEATER is turned off, the inlet water is shut ⁇ ff (INLET WATER SOLENOID is closed), and the BOILER DRAIN SOLENOID is opened, thereby draining the BOILER. This is the non- operational state of the system, which is indicated when the POWER INDICATOR is not lit.
  • HEAT This is the Control state when power is applied or RESET SWITCH is released and water processing is initiated.
  • the HEATER is turned on, the inlet water is turned on (INLET WATER SOLENOID is opened), and the BOILER DRAIN SOLENOID is closed (thereby filling the BOILER), and product output from the condenser is directed to the waste container or tube (PRODUCT OUTPUT SOLENOID is opened).
  • the BOILER PRESSURE SWITCH operates independently, and monitors pressure difference from the BOILER DRAIN and BOILER to control the water level in the BOILER.
  • the BOILER PRESSURE SWITCH controls the INLET WATER SOLENOID, so that water level in the BOILER is actively monitored. This state is indicated when the HEAT INDICATOR is lit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Fluid Mechanics (AREA)
  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

L'invention concerne un système complètement automatisé permettant de commander des unités de purification de l'eau en fonction de la distillation. Des paramètres de commande dans le système comprennent un fusible d'entrée d'alimentation globale (2) servant de protection contre des courts-circuits, un commutateur de remise à zéro manuel (3) remettant l'ensemble du système dans un état initial, un commutateur de rupture thermique (1) empêchant le brûleur d'être sec, un commutateur de niveau de produit (4) empêchant le réservoir de produit de déborder, un commutateur de pression du brûleur (5) maintenant le niveau adéquat dans le brûleur, un solénoïde d'admission (6) commandant l'écoulement de l'eau de l'admission, un solénoïde de vidange du brûleur (8) commandant la vidange périodique du brûleur, un relais de retard temporel (9) empêchant l'eau produite pendant des conditions transitoires d'entrer dans le contenant de produit, un solénoïde de sortie de produit (10) dirigeant l'eau produite soit dans le contenant de produit, soit dans un flux de déchets et trois lumières d'indicateur (11,12,13) indiquant l'état de fonctionnement en continu.
EP04812499A 2003-12-02 2004-12-01 Systeme de commande du traitement de l'eau totalement automatise Withdrawn EP1740283A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US52653003P 2003-12-02 2003-12-02
PCT/US2004/039991 WO2005056154A1 (fr) 2003-12-02 2004-12-01 Systeme de commande du traitement de l'eau totalement automatise

Publications (2)

Publication Number Publication Date
EP1740283A1 true EP1740283A1 (fr) 2007-01-10
EP1740283A4 EP1740283A4 (fr) 2008-03-12

Family

ID=34676626

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04812499A Withdrawn EP1740283A4 (fr) 2003-12-02 2004-12-01 Systeme de commande du traitement de l'eau totalement automatise

Country Status (4)

Country Link
EP (1) EP1740283A4 (fr)
JP (1) JP2007512953A (fr)
CA (1) CA2553655A1 (fr)
WO (1) WO2005056154A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114661074A (zh) * 2022-05-24 2022-06-24 深圳市家家分类科技有限公司 一种液位控制方法及装置

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7678235B2 (en) 2005-10-19 2010-03-16 Sylvan Source, Inc. Water purification system
WO2007103117A2 (fr) 2006-03-03 2007-09-13 Sylvan Source, Inc. Prevention contre les contaminants
EP2417070A4 (fr) * 2009-04-10 2012-08-22 Sylvan Source Inc Procédé et système de réduction de la formation de tartre dans la purification des solutions aqueuses
CN101881038B (zh) * 2010-06-28 2012-08-22 兰如根 带超压保护的水位控制器
WO2013036804A1 (fr) 2011-09-09 2013-03-14 Sylvan Source, Inc. Purification et dessalement des eaux industrielles
WO2017189969A1 (fr) * 2016-04-28 2017-11-02 Fluid Handling Llc Ensemble commutateur e-11m
CN105955323B (zh) * 2016-06-15 2019-03-19 山东华联矿业股份有限公司 自控泵水位控制装置
CN108452593B (zh) * 2018-03-05 2023-11-17 国网浙江省电力有限公司台州供电公司 一种低阻高效流化除雾器装置及其除雾方法

Citations (3)

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Publication number Priority date Publication date Assignee Title
GB1384390A (en) * 1971-11-16 1975-02-19 Sensors Systems Ltd Electronic surveillance apparatus
US4336825A (en) * 1980-06-17 1982-06-29 Factory Mutual Research Corporation Liquid level control system
US5355840A (en) * 1991-06-10 1994-10-18 Societe Cooperative Deproduction Bourgeois Steam generator controlled by pressure switch

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US3980526A (en) 1975-08-11 1976-09-14 Kirschmann John D Liquid distillation apparatus
JPS5436123Y2 (fr) * 1975-10-04 1979-11-01
US4110170A (en) 1976-04-28 1978-08-29 Kirschman Fred C Home water distiller
US4415075A (en) 1981-09-16 1983-11-15 General Molding, Inc. Wall mounted light weight automatic water distiller
JPS62250901A (ja) * 1986-04-25 1987-10-31 Toshiba Corp 濃縮器制御装置
US5021128A (en) 1988-02-25 1991-06-04 Pure Water, Inc. Water distillation system and method with controls
US4943353A (en) 1988-03-10 1990-07-24 Pure Water, Inc. Control for modular water distiller
US5348623A (en) 1988-12-09 1994-09-20 Terrill Designs, Inc. Water heating and distilling apparatus
US4946558A (en) 1988-12-09 1990-08-07 Terrill Designs, Inc. Water distilling apparatus
US5059287A (en) 1989-06-16 1991-10-22 Charles W. Harkey, Sr. Portable water distiller
US5286350A (en) 1992-12-14 1994-02-15 Huang Shan Meng Water distiller
US5609732A (en) 1995-03-14 1997-03-11 Genesis, An Environmental Corp. Distilling apparatus
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US6117275A (en) * 1996-03-01 2000-09-12 Didda Maria Janina Baumann Process and device for regenerating a contaminated solvent
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JPH11216459A (ja) * 1998-01-29 1999-08-10 Nishishiba Electric Co Ltd 海水淡水化装置
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CA2429262C (fr) 2000-11-17 2006-09-05 Stephan B. Sears Dispositif de traitement d'eau
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Publication number Priority date Publication date Assignee Title
GB1384390A (en) * 1971-11-16 1975-02-19 Sensors Systems Ltd Electronic surveillance apparatus
US4336825A (en) * 1980-06-17 1982-06-29 Factory Mutual Research Corporation Liquid level control system
US5355840A (en) * 1991-06-10 1994-10-18 Societe Cooperative Deproduction Bourgeois Steam generator controlled by pressure switch

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Title
See also references of WO2005056154A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114661074A (zh) * 2022-05-24 2022-06-24 深圳市家家分类科技有限公司 一种液位控制方法及装置
CN114661074B (zh) * 2022-05-24 2022-09-20 深圳市家家分类科技有限公司 一种液位控制方法及装置

Also Published As

Publication number Publication date
WO2005056154A1 (fr) 2005-06-23
JP2007512953A (ja) 2007-05-24
EP1740283A4 (fr) 2008-03-12
CA2553655A1 (fr) 2005-06-23

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