EP0728286B1 - Cleaning system for cleaning the inside of fluid conducting tubing and associated apparatus - Google Patents
Cleaning system for cleaning the inside of fluid conducting tubing and associated apparatus Download PDFInfo
- Publication number
- EP0728286B1 EP0728286B1 EP95902659A EP95902659A EP0728286B1 EP 0728286 B1 EP0728286 B1 EP 0728286B1 EP 95902659 A EP95902659 A EP 95902659A EP 95902659 A EP95902659 A EP 95902659A EP 0728286 B1 EP0728286 B1 EP 0728286B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluid
- balls
- sieve
- tubing
- outlet
- 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 - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/12—Fluid-propelled scrapers, bullets, or like solid bodies
Definitions
- a cleaning system for cleaning the inside of fluid conducting tubing, the cleaning system comprising: (a) a plurality of balls entrained by a fluid flowing through the system; (b) separation apparatus for separating the balls from the fluid downstream of the tubing; (c) accumulator apparatus for accumulating the balls downstream of the separation apparatus; characterised by (d) storage apparatus for storing a volume of injection fluid, the storage apparatus being in communication with the accumulator apparatus, the storage apparatus being in communication with a point upstream of the tubing; and by (e) a compressor for selectively providing a supply of compressed air into the storage apparatus for injecting a portion of the volume of injection fluid from the storage apparatus to the point upstream of the tubing, a fraction of the volume of injection fluid passing through the accumulator apparatus for entraining some of the balls therewith for injection upstream of the tubing.
- the apparatus further comprising a second separation apparatus in parallel with the first separation apparatus, the second separation apparatus including a conduit having an inlet in flow communication with the downstream side of the tubing, a ball outlet connected to the inlet of the ball recirculation apparatus and a fluid outlet connected to an outlet fluid line, and a generally cylindrical sieve substantially extending between the inlet and the ball outlet.
- FIGS. 1a-1c are schematic views of a cleaning system, generally designated 10, constructed and operative according to the teachings of the present invention, for cleaning a condenser 12 at different stages of operation.
- Condenser 12 includes fluid conducting tubing 14 through which a cooling liquid, such as water, passes to condense a fluid, such as steam or refrigerant gas, passing through spaces between condenser tubing 14.
- the cooling fluid is pumped by a pump 20 through a closed circuit including an inlet conduit 22 at the upstream side of condenser 12 connected to the inlet header 16 of condenser 12, condenser tubing 14, and an outlet conduit 24 at the downstream side of condenser 12 connected to the outlet header 18 of condenser 12.
- ball recirculation apparatus 30 includes four elements.
- Trap 60 preferably has sufficient storage capacity to accommodate all balls 26 in circulation.
- Tank 62 can be filled either by run-off from trap 60 or from a separate source of fluid (not shown) and preferably has sufficient storage capacity for injecting all the balls stored in trap 60 into the mainstream fluid flow.
- ball recirculation apparatus 30 is activated such that the prevailing pressure in tank 62 suddenly drops below the prevailing pressure within outlet conduit 24.
- the sudden pressure drop causes a relatively abrupt diversion in the flow of cooling fluid through separation apparatus 28 such that most of the cooling fluid is discharged through ball outlet 50 along conduit 32 instead of through fluid outlet 48 along outlet conduit 24.
- balls 26 are evacuated therefrom by an intense vortex of cooling fluid entraining balls 26 through ball outlet 50 toward ball recirculation apparatus 30.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning In General (AREA)
- Cyclones (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Cleaning By Liquid Or Steam (AREA)
Description
Claims (16)
- A cleaning system for cleaning the inside of fluid conducting tubing (14), the cleaning system comprising:(a) a plurality of balls (26) entrained by a fluid flowing through the system;(b) separation apparatus (28; 112, 112A, 112B) for separating the balls from the fluid downstream of the tubing (14); and(c) accumulator apparatus (60) for accumulating the balls (26) downstream of the separation apparatus (28); characterized by(d) storage apparatus (62) for storing a volume of injection fluid, the storage apparatus (62) being in communication with the accumulator apparatus (60), the storage apparatus (62) being in communication with a point (74) upstream of the tubing (14); and by(e) a compressor (64) for selectively providing a supply of compressed air into the storage apparatus (62) for injecting a portion of the volume of injection fluid from the storage apparatus (62) to the point (74), a fraction of the volume of injection fluid passing through the accumulator apparatus (60) for entraining some of the balls (26) therewith for injection upstream of the tubing (14).
- The system of claim 1 wherein the separation apparatus (28) includes a generally cylindrical sieve (58) and a ball outlet (50) located substantially in the center of the sieve (58).
- The system of claims 1 or 2 wherein the accumulator apparatus (60) and the storage apparatus (62) are combined in a single housing (72).
- The system of claims 1 or 2 wherein the accumulator apparatus (60) and the storage apparatus (62) are configured as two separate airtight housings.
- The system of one or more of claims 1-4 wherein the accumulator apparatus (60) includes a further sieve (76) and wherein the storage apparatus (62) is at least partly filled by fluid run-off from the accumulator apparatus (60).
- The system of one or more of claims 1-5 further comprising a pressure decreasing device (70) for decreasing the pressure in the storage apparatus (62).
- The system of claim 6 wherein the pressure decreasing device (70) is a release valve.
- The system of claim 6 wherein the the pressure decreasing device (70) is a pump.
- The system of one or more of claims 1-8 further comprising sensing means (96b) for sensing the level of the volume of fluid in the storage apparatus (62); or further comprising a timer for operating the system.
- The system of claim 1 wherein the separation apparatus (28) includes:a conduit (44) having an inlet (46) in flow communication with the downstream side of the tubing (14), a ball outlet (50) operatively connected to the accumulator apparatus (60) for recirculating the balls (26) to the upstream side of the tubing (14) and a fluid outlet (48) connected to the upstream side of the tubing (14); anda generally cylindrical sieve (58) substantially extending lengthwise between the inlet (46) and the ball outlet (50) in the conduit (44) for trapping the plurality of balls (26) therein as fluid continually flows from the inlet (46) to the fluid outlet (48).
- The system of claim 10 wherein the cross-sectional area of the inlet (46) is substantially equal to the cross-sectional area of an outlet header neck (18a) of the tubing (14); or wherein the cross-sectional area of the sieve (58) is substantially equal to the cross-sectional area of an outlet header neck (18a) of the tubing (14).
- The system of claim 10 wherein the total open area of the sieve (58) is at least approximately five times its cross-sectional area; or wherein the total open area of the sieve (58) is at least approximately five times the cross-sectional area of an outlet header neck (18a) of the tubing (14); or wherein the ball outlet (50) is located substantially center to the sieve (58) .
- The system of one or more of claims 10-12 further comprising means (102) for reducing turbulence in the flow of fluid within the vicinity of the fluid outlet (48); or further comprising means (98) for reducing turbulence in the flow of fluid within the vicinity of the ball outlet (50); or further comprising means (104) for urging the plurality of balls (26) toward the ball outlet (50); or further comprising means (106, 108) for compacting the motion of the plurality of balls (50) such that the excursion of the plurality of balls (26) from the axis of the ball outlet (50) is decreased.
- The system of one or more of claims 10-12 wherein the sieve (58) includes a non-perforated portion (98, 102); or wherein the sieve (58) converges from the inlet (46) towards the ball outlet (50); or wherein the sieve (58) includes a constricted waist portion (110); or further comprising an insert (104) extending from the ball outlet (50) toward the inlet (46).
- The system according to one or more of claims 10-14 further comprising a second separation apparatus (112B) in parallel with the first separation apparatus (112A), the second separation apparatus (112B) including a conduit (44B) having an inlet (46b) in flow communication with the downstream side of the tubing (14), a ball outlet (50B) connected to the inlet of the ball recirculation apparatus and a fluid outlet (48B) connected to an outlet fluid line, and a generally cylindrical sieve (58B) substantially extending between the inlet (46B) and the ball outlet (50B).
- The system of claim 15 wherein the inlet (46B) of the second separation apparatus (112B) is substantially opposite the inlet (46A) of the first separation apparatus (112A); or further comprising first and second valves (114A, 114B) deployed on the first and second fluid outlets (48A, 48B), respectively.
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US154062 | 1971-06-17 | ||
US258887 | 1972-06-01 | ||
US08/154,062 US5388636A (en) | 1993-11-18 | 1993-11-18 | System for cleaning the inside of tubing |
US258888 | 1994-06-13 | ||
US08/258,887 US5450895A (en) | 1993-11-18 | 1994-06-13 | Apparatus for separating balls from fluid, particularly for systems using the balls for cleaning fluid-conducting tubing |
US08/258,888 US5447193A (en) | 1993-11-18 | 1994-06-13 | Apparatus for injecting a volume of liquid into a liquid-conducting system |
PCT/US1994/013469 WO1995014205A1 (en) | 1993-11-18 | 1994-11-18 | Cleaning system for cleaning the inside of fluid conducting tubing and associated apparatus |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0728286A1 EP0728286A1 (en) | 1996-08-28 |
EP0728286A4 EP0728286A4 (en) | 1998-02-25 |
EP0728286B1 true EP0728286B1 (en) | 2001-09-05 |
Family
ID=27387537
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95902659A Expired - Lifetime EP0728286B1 (en) | 1993-11-18 | 1994-11-18 | Cleaning system for cleaning the inside of fluid conducting tubing and associated apparatus |
Country Status (15)
Country | Link |
---|---|
EP (1) | EP0728286B1 (en) |
JP (1) | JP3306829B2 (en) |
KR (1) | KR100346769B1 (en) |
CN (2) | CN1099581C (en) |
AU (1) | AU692203B2 (en) |
BR (1) | BR9408567A (en) |
CA (1) | CA2174555C (en) |
CZ (1) | CZ289247B6 (en) |
DE (1) | DE69428207T2 (en) |
ES (1) | ES2163491T3 (en) |
HU (1) | HU221834B1 (en) |
IL (1) | IL111666A (en) |
PL (1) | PL177797B1 (en) |
RU (1) | RU2137999C1 (en) |
WO (1) | WO1995014205A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100476534B1 (en) * | 2002-05-08 | 2005-03-17 | 설원실 | Heat exchange tube auto cleaning system using fluid flow |
US7036564B2 (en) * | 2002-05-30 | 2006-05-02 | Hydroball Technics Holdings Pte Ltd. | Cleaning system |
FR2871395B1 (en) * | 2004-06-11 | 2006-09-15 | David Weill | SIMPLIFIED CLEANING AND FILLING DEVICE |
UA89198C2 (en) * | 2004-07-29 | 2010-01-11 | Твистер Б.В. | Heat exchange with means for re-circulation of cleaning particles |
CN101504263B (en) * | 2009-03-04 | 2011-11-16 | 沈忠东 | Ball cleaning apparatus of condenser |
SG171739A1 (en) | 2009-03-31 | 2011-07-28 | Hydroball Technics Holdings Pte Ltd | Cleaning system for cleaning tubing |
JP2011145057A (en) * | 2009-12-19 | 2011-07-28 | Mitsubishi Heavy Ind Ltd | Condenser |
CN101839669B (en) * | 2010-05-07 | 2012-07-11 | 深圳市福尔沃机电设备有限公司 | On-line cleaning system for central air-conditioning condenser |
CN102895786A (en) * | 2011-07-27 | 2013-01-30 | 俞天翔 | Energy-saving evaporator |
FR2983106B1 (en) * | 2011-11-24 | 2014-01-10 | Air Liquide | DEVICE FOR DISPENSING CRYOGENIC FLUID JETS WITH A TRANQUILIZING CHAMBER |
KR101511491B1 (en) | 2014-09-04 | 2015-04-13 | 홍현성 | Cleaning equipment for inside duct of ventilation unit |
CN113454003A (en) * | 2019-02-18 | 2021-09-28 | 热带产品公司 | Method for minimizing material mixing during transitions in a material processing system |
CN110788095B (en) * | 2019-11-04 | 2021-12-28 | 陈坚 | Multifunctional pipeline cleaning machine |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE525076A (en) * | ||||
DE1247359B (en) * | 1962-01-22 | 1967-08-17 | Hitachi Ltd | Cleaning device for tube heat exchangers |
JPS5111253B2 (en) * | 1972-03-24 | 1976-04-09 | ||
JPS5066001U (en) * | 1973-10-22 | 1975-06-13 | ||
US3919732A (en) * | 1973-11-08 | 1975-11-18 | Tokyo Shibaura Electric Co | Descaling system for condenser cooling tubes |
US4234993A (en) | 1979-05-30 | 1980-11-25 | Kintner Edwin K | Condenser cleaning system using sponge balls |
JPS5714190A (en) * | 1980-06-30 | 1982-01-25 | Hitachi Ltd | Soaking method for porous cleaning ball |
DE3227708C1 (en) * | 1982-07-24 | 1983-10-20 | Taprogge Gesellschaft mbH, 4000 Düsseldorf | Lock for collecting cleaning bodies |
US4569097A (en) * | 1983-11-23 | 1986-02-11 | Superior I.D. Tube Cleaners Incorporated | Tube cleaners |
DE3460203D1 (en) * | 1984-01-09 | 1986-07-17 | Gea Energiesystemtechnik Gmbh | Cooling water circuit of a tube heat exchanger with an arrangement for introducing and separating spherical cleaning elements |
DE3403198C2 (en) * | 1984-01-31 | 1986-09-11 | Josef Dipl.-Ing. 4006 Erkrath Koller | Device for cleaning the tubes of heat exchangers using cleaning bodies |
DE3406982C1 (en) * | 1984-02-25 | 1985-08-01 | Taprogge GmbH, 5802 Wetter | Lock for cleaning bodies |
JPS61147099A (en) * | 1984-12-19 | 1986-07-04 | Hitachi Ltd | Ball cleaning device |
IL79885A0 (en) | 1986-08-29 | 1986-11-30 | Chaim Ben Dosa | Cleaning system for fluids-conducting tubing |
JPS63238397A (en) * | 1987-03-25 | 1988-10-04 | Toshiba Corp | Condenser cooling pipe cleaning device |
IL94289A (en) * | 1990-05-04 | 1992-12-01 | Balls Technics Ltd | Cleaning system for cleaning fluid-conducting tubing |
JP2887422B2 (en) * | 1991-05-31 | 1999-04-26 | 川重冷熱工業株式会社 | Heat transfer tube automatic cleaning device |
-
1994
- 1994-11-17 IL IL11166694A patent/IL111666A/en not_active IP Right Cessation
- 1994-11-18 RU RU96113140A patent/RU2137999C1/en not_active IP Right Cessation
- 1994-11-18 HU HU9601332A patent/HU221834B1/en not_active IP Right Cessation
- 1994-11-18 EP EP95902659A patent/EP0728286B1/en not_active Expired - Lifetime
- 1994-11-18 BR BR9408567A patent/BR9408567A/en not_active IP Right Cessation
- 1994-11-18 AU AU11847/95A patent/AU692203B2/en not_active Ceased
- 1994-11-18 ES ES95902659T patent/ES2163491T3/en not_active Expired - Lifetime
- 1994-11-18 WO PCT/US1994/013469 patent/WO1995014205A1/en active IP Right Grant
- 1994-11-18 PL PL94314467A patent/PL177797B1/en not_active IP Right Cessation
- 1994-11-18 JP JP51466795A patent/JP3306829B2/en not_active Expired - Fee Related
- 1994-11-18 CZ CZ19961439A patent/CZ289247B6/en not_active IP Right Cessation
- 1994-11-18 CA CA002174555A patent/CA2174555C/en not_active Expired - Fee Related
- 1994-11-18 DE DE69428207T patent/DE69428207T2/en not_active Expired - Lifetime
- 1994-11-18 CN CN94194159A patent/CN1099581C/en not_active Expired - Fee Related
- 1994-11-18 KR KR1019960702722A patent/KR100346769B1/en not_active IP Right Cessation
-
2000
- 2000-11-06 CN CNB00133803XA patent/CN1154834C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
PL314467A1 (en) | 1996-09-16 |
EP0728286A1 (en) | 1996-08-28 |
RU2137999C1 (en) | 1999-09-20 |
KR960706061A (en) | 1996-11-08 |
KR100346769B1 (en) | 2002-11-08 |
WO1995014205A1 (en) | 1995-05-26 |
CA2174555C (en) | 2008-05-20 |
HU9601332D0 (en) | 1996-07-29 |
CZ289247B6 (en) | 2001-12-12 |
CN1135257A (en) | 1996-11-06 |
CA2174555A1 (en) | 1995-05-26 |
CZ143996A3 (en) | 1997-02-12 |
JP3306829B2 (en) | 2002-07-24 |
JPH09509244A (en) | 1997-09-16 |
PL177797B1 (en) | 2000-01-31 |
ES2163491T3 (en) | 2002-02-01 |
CN1154834C (en) | 2004-06-23 |
HU221834B1 (en) | 2003-01-28 |
AU692203B2 (en) | 1998-06-04 |
HUT75003A (en) | 1997-03-28 |
AU1184795A (en) | 1995-06-06 |
EP0728286A4 (en) | 1998-02-25 |
CN1312458A (en) | 2001-09-12 |
DE69428207T2 (en) | 2002-06-13 |
IL111666A0 (en) | 1995-01-24 |
DE69428207D1 (en) | 2001-10-11 |
IL111666A (en) | 1996-10-31 |
BR9408567A (en) | 1997-08-05 |
CN1099581C (en) | 2003-01-22 |
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