EP1220722B1 - Methods and apparatus for clearing pipes - Google Patents
Methods and apparatus for clearing pipes Download PDFInfo
- Publication number
- EP1220722B1 EP1220722B1 EP00956733A EP00956733A EP1220722B1 EP 1220722 B1 EP1220722 B1 EP 1220722B1 EP 00956733 A EP00956733 A EP 00956733A EP 00956733 A EP00956733 A EP 00956733A EP 1220722 B1 EP1220722 B1 EP 1220722B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pipe
- gas
- forcing
- contents
- forcing means
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0325—Control mechanisms therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0323—Arrangements specially designed for simultaneous and parallel cleaning of a plurality of conduits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0327—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid the fluid being in the form of a mist
Definitions
- This invention relates to methods and apparatus for clearing pipes.
- Pipes such as water pipes, pipes in industrial plants for transferring liquids, slurries, particulate materials, as well as air ducts, oil pipelines, drains and so forth, are conventionally cleared of the flowable material conveyed in them or of accumulated sediment by means of a pig, a device sent through the pipe, either by hauling or pushing or under its own power.
- DE2629301A there is disclosed a disposal facility for sewage with a pressure conduit, in which contaminated waste water is forced into the pressure conduit by means of a submersible motor-driven pump with a filtrate collection chamber.
- the sewage is supplied more or less continuously with oxygen so that the sewage cannot begin to decompose while it is in the pressure conduit by air compressors at one or more suitable locations in the pressure conduit, which aerate the conduit more or less continuously and at a constant level by injection of measured quantities of air, and/or allow flushing air into the conduit at suitable intervals.
- the flushing air flushes out the sewage in the conduit quickly and is followed by a flow - increasing in speed - of compressible air, which disturbs the deposits so that they are removed.
- US5915395 is disclosed a method of cleaning water mains by, in an isolated section of the main, interspersing slugs of water between sections of compressed air which includes atomized chlorine and a polyphosphate inhibitor.
- the present invention provides methods and apparatus for clearing pipes which represent substantial improvements over pig-associated methods and apparatus.
- the methods and apparatus of the invention use air, or another gas, to clear contents out of pipes, but are adapted to clear many materials other than water or sewage and in a wider variety of circumstances, and to provide ancillary functions not possible with those earlier methods.
- the invention comprises a method for clearing pipes having an inlet end and one or more outlets, comprising discharging the pipe contents by a gas flow, characterised by comprising the steps of:
- the gas forcing means may serve also for the high flow velocity step.
- a cleaning fluid may be introduced into the pipe after the gas forcing steps.
- the cleaning fluid may fill the pipe at least between the inlet and the open outlet or outlets.
- the cleaning fluid will then be discharged from the pipe - which may be done, clearly, by using the gas forcing means again, after which, with the outlet or outlets throttled down, a gas may be forced into the pipe to increase the pressure therein so that the accompanying adiabatic temperature increase dries the pipe of cleaning fluid.
- the gas forced into the pipe in any or all steps may be air, indeed, will conveniently be air, though for certain applications e.g. food and drinks manufacturing of filling plant, nitrogen or carbon dioxide may be preferred, and other gases may be used for special applications.
- water will be the usual choice - water can easily be evaporated with an adiabatic temperature rise up to 100°C, readily attainable with a pipe overpressure of less than 1 bar.
- Other cleaning fluids such as organic solvents, can be used where required, and these will often be easier to dry off than water
- the high velocity blowing step may involve a gas velocity through the pipe of the order of 20 m/s.
- the characteristics of a gas forcing means to achieve such a flow rate will depend upon the geometry of the pipe, and the actual velocity required may well also depend upon pipe geometry as well as on the nature of the material which is required to be cleared, Given this "ball park" figure of 20 m/s, trial and error will readily establish the gas forcing requirements for any given pipe system.
- the amount of overpressure required for an adiabatic heating drying step can be readily calculated from Boyle's law, and the gas forcing requirements adjusted to achieve that, if not already adequate from the pipe clearing considerations, while the throttling can be adjusted to bring about the required pressure increase while ensuring a sufficient flow through of the gas to eliminate the evaporated cleaning fluid.
- the invention also comprises apparatus for clearing pipes by means of a gas flow, characterised by comprising:
- the gas forcing means may comprise a pump.
- the gas forcing means may, however, comprise blower, turbine or compressor means, which may be capable of generating a gas flow velocity through the pipe of the order of 20 m/s.
- the forcing means and valve means may be adapted to the pipe to cooperate to elevate the pressure inside the pipe so as to increase the temperature of the gas in the pipe to evaporate a cleaning liquid while maintaining a flow out of the pipe through said valve means.
- the apparatus may be built into a manufacturing plant, either as a retrofit into an existing plant, or as a custom installation in new plant.
- Portable apparatus may be used, however, for example to provide a service whether for routine or occasional pipe clearing.
- Access for the gas forcing means and connections for the outlet valving may be designed into new plant or may be retrofitted and left after use for future use, or may be improvised as required.
- the apparatus may comprise a control arrangement controlling the gas forcing means.
- the control arrangement may control the gas forcing means in accordance with conditions in the pipe, and may comprise a relief valve and/or a pipe internal pressure measuring device and/or a pipe internal temperature measuring device.
- the control means may control the output of the gas forcing means.
- the gas forcing means may comprise a rotary blower and the control means may control the rate of rotation thereof. If the blower is electrically powered, speed control may be via a frequency converter.
- the control arrangement may comprise a programmed computer, which may be programmed to cause the gas forcing means and all ancillary equipment to operate in accordance with sensed variables and/or to a time regime.
- a major application for the method is in the area of drains from domestic, commercial and industrial premises, which are currently unblocked using rodding or water jet technologies - pigs are not usually feasible.
- drainage systems that may be anything but straight, even broken, with adjacent parts misaligned and possibly of differing cross-section along their length, rodding and jetting systems can be problematical at best, and potentially capable of damaging a pipe, or adding to damage already present.
- Apparatus according to the invention can be trailer-mounted for servicing drains - of course, building drains will not usually require anything beyond the clearing steps, and so fitting a throttled outlet will not usually be required.
- FIG. 1 illustrates methods and apparatus for clearing pipe 11 having an inlet end 11a and one or more outlet ends 11b.
- there are two outlet ends 11b there being a branch 11c in the pipe 11. It is just such a branch, as well as bend 11d in the pipe 11, that gives rise to problems in rodding and jetting.
- the method as illustrated in Figure 1, comprises
- a throttling or relief valve 13 will usually be provided. This will be throttled down or set to open at a given internal pressure in the pipe 11 to protect the same.
- the method is of general applicability, regardless of the length of the pipe - pipelines up to several kilometres in length could be cleared in this way - and regardless, also, of the cross-sectional size or shape of the pipe.
- the method may be used to clear process pipework in industrial plants, hot air and air conditioning ducting, drains and sewers, even if the pipe is damaged or changes in cross-section (whether shape or size) or direction (even if there are right-angle bends), and even if there are sharp steps in the pipe and internal obstructions such as instrument probes, flanges, or tree roots in drains and sewers.
- the high pressure, low velocity step will usually clear away the bulk of material in the pipe, leaving, however, material that may lie in U-formations or be trapped against protuberances - it will, at least, clear a gas flow path through the pipe.
- the low pressure, high velocity step will clear out any such detritus left behind after the high pressure step.
- the lifting power of a fluid flow can be proportional to the fourth power of its velocity - even a small increase in velocity above a nominal 20 m/s can result in a substantially greater ability to pick up and carry out liquids, solids or mixtures thereof left in the pipe after the high pressure, low velocity step.
- the cleaning fluid - which will usually be water, but which may be any other liquid appropriate to the cleaning task in hand, for example an organic solvent - may flow through the pipe and be cleared from the pipe if necessary by re-use of the high pressure, low velocity and low pressure, high velocity gas blowing steps.
- Any film of cleaning fluid left on the walls of the pipe and, of course, any pools of fluid left behind by the blowing operations, will be evaporated by adiabatic heating as the pipe outlet is throttled down, leading to a pressure increase while permitting flow through the pipe to carry away the evaporated cleaning fluid.
- Figure 2 illustrates the method and apparatus of the invention in the context of an industrial plant in which a product, for example, minestrone soup for canning, is mixed in a mixing tank 21 for transfer by pipe 22 to a stock tank 23 whence by pipe 24 to a filler arrangement 25 for the cans or other containers for shipment, retail and so on.
- a product for example, minestrone soup for canning
- Transfer from mixing tank 21 to stock tank 23 is effected by a pump 25, and from stock tank 23 to filler arrangement 25 by a pipe 26.
- a valve 27 allows the product filling operation or product transfer to other receptacles.
- the additional equipment comprises a blower unit 29 and valves 29a, 29b, 29c, 29d, 29e, 29f, 29g.
- the blower unit 29, which is essentially a ducted fan arrangement, is connected to valves 29a and 29b by a gas delivery pipe 31, thence to valve 29e by a gas delivery pipe 32.
- Valves 29c and 29f deliver process water or cleaning fluid.
- the blower unit 29 is turned on with valves 29a and 29b connecting it to the pipe 22.
- the high pressure, low velocity initial flow from the blower unit 29 pushes product out of the pipe 22 into the receiving stock tank 23, and the ensuing low pressure/high velocity flow then cleans out any product not cleared by the high pressure, low volume flow.
- Cleaning liquid e.g. water
- valve 29c the valve 29a being shut off from the blower unit 29 but open to the pipe 22.
- the cleaning liquid can be pumped into and through the pipe 22 by a separate pressure source.
- valve 29c is shut off from the cleaning fluid supply, and valves 29a and 29b opened to connect the pipe 22 to the blower unit 29.
- valve 29d is throttled down so that the gas pressure inside pipe 22 increases to heat the gas adiabatically and evaporate the cleaning liquid, which is expelled from the valve 29d as vapour carried in the gas outflow.
- FIG. 2 shows cleaning liquid connectible via valves 29c and 29f to pipes 22 and 26 in turn.
- the entire arrangement can be made as a retrofit to existing plant, or designed into new plant.
- FIGS 3, 4 and 5 are elevations showing how one arrangement would appear in practice.
- FIG 3 illustrates the blower unit 29, which comprises a motor 41, driving a fan 42.
- a valve tree 43 includes a filter 44 so that the blower unit 29 delivers filtered air to the pipe 22.
- Valve 29a is shown, without connection from the mixing tank 21, connecting to the pipe 22, Figure 2.
- Figure 4 shows a possible arrangement at the outlet end, or an outlet end of a system such as is illustrated in Figure 2, in which the pipe 22 terminates in a riser 22a with an attached section 22b delivering into a receiving tank 51.
- Figure 5 shows the same riser 22a to the pipe 22 adapted for the adiabatic temperature increase by the section 22b being removed and substituted by a valve arrangement 52 which can be opened for passage of a cleaning fluid before being throttled down for the adiabatic heat generation.
- Valve units 52 can be located at different positions in a pipe system so that different sections of pipe can be treated individually.
- the method is adaptable to many different pipe clearing operations covering all lengths and cross-sections (size, shape) of pipe, conveying all manner of products, such as liquids, slurries, powders.
- the apparatus may, according to the invention, be built in to commercial premises or industrial plant, or may be mounted on a trailer for deployment on an ad hoc basis, for example as an alternative or an auxiliary to conventional drain rodding and jetting equipment.
- the method is used, not as a method of cleaning pipes for maintenance purposes, rather as an integral part of a manufacturing process - a pipe can have a definitive volume and that volume of product can be precisely delivered by filling the pipe and then clearing its contents into a receiving tank.
- the method in broad aspect, can also be employed in connection with drains and sewers on a routine basis.
- the second - high velocity, low pressure - part of the process would be particularly beneficial in controlling flow through and levels in drains and sewers, keeping them generally free from accumulation of debris.
- Blowers and valves can be fitted at strategic locations to control flow in sections of sewer.
- gas forcing means any appropriate apparatus for forcing gas or air through the pipe in question.
- An internal combustion engine-powered blower may be suitable for portable apparatus (such as equipment for cleaning sewers and drains). Where heat greater than that which can be produced by adiabatic heating at pressures the pipe can stand or can attain (eg. due to leaks in sewers) for example for pasteurisation, is required, a heating blower can be used or - and especially where large pipes or systems are concerned, even a gas turbine.
- Figures 6 and 7 shown a drain clearing arrangement according to the invention.
- an appropriately geared prime mover 72 shown as a petrol engine with a fuel tank 73
- the fitting 65 is connectible to a flexible hose 67 from the unit 61, and has a valved inlet 67 for a supply of water - other valved openings may also be fitted, e.g. for a water spray.
- the end 63b of the drain or sewer 63 is fitted with a connector 69 held in by another adjuster 66.
- the collector can be exchanged for a valve arrangement to control flow of cleaning fluid and air for adiabatic heating, if desired, though this will not always be a requirement in drain and sewer clearing.
- the prime mover 72 has a central panel 76 and there is a separate control panel 77 for setting up and controlling the blowing arrangements, valving and so forth.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Cleaning By Liquid Or Steam (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9920876A GB2353837B (en) | 1999-09-04 | 1999-09-04 | Methods and apparatus for clearing pipes |
GB9920876 | 1999-09-04 | ||
PCT/GB2000/003394 WO2001017700A1 (en) | 1999-09-04 | 2000-09-04 | Methods and apparatus for clearing pipes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1220722A1 EP1220722A1 (en) | 2002-07-10 |
EP1220722B1 true EP1220722B1 (en) | 2005-08-24 |
Family
ID=10860323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00956733A Expired - Lifetime EP1220722B1 (en) | 1999-09-04 | 2000-09-04 | Methods and apparatus for clearing pipes |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1220722B1 (ja) |
JP (1) | JP4854898B2 (ja) |
AT (1) | ATE302656T1 (ja) |
AU (1) | AU6859600A (ja) |
DE (1) | DE60022213T2 (ja) |
DK (1) | DK1220722T3 (ja) |
ES (1) | ES2248105T3 (ja) |
GB (1) | GB2353837B (ja) |
WO (1) | WO2001017700A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7950403B2 (en) | 2007-03-08 | 2011-05-31 | The Coca-Cola Company | Pipe clearing systems |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6385810B1 (en) * | 2000-05-05 | 2002-05-14 | The Hoover Company | Latch arrangement for a vacuum cleaner dirt receptacle |
GB0226794D0 (en) * | 2002-11-16 | 2002-12-24 | Whirlwind By Air Ltd | Method and apparatus for treating pipes |
GB0326653D0 (en) * | 2003-11-15 | 2003-12-17 | Whirlwind By Air Ltd | Cleaning wall deposits from ducts |
WO2005105331A1 (en) | 2004-05-05 | 2005-11-10 | Whirlwind By-Air Limited | Clearing pipework in oil refineries and other plant having extensive pipework |
ITPD20040256A1 (it) | 2004-10-15 | 2005-01-15 | Griggio Francesco | Metodo per la rigenerazione di condotte per il trasporto o il trattamento di aria |
GB0510021D0 (en) * | 2005-05-17 | 2005-06-22 | Roscoe Keith | Liquid injection into gas stream |
EP1872877B1 (en) * | 2006-06-29 | 2010-07-28 | Fluidor Equipment B.V. | Method and apparatus for clearing pipes |
CN102527679A (zh) * | 2011-12-08 | 2012-07-04 | 常州市龙豪车辆配件厂 | 汽车动力转向管的清洁装置 |
RU2590547C1 (ru) * | 2015-01-20 | 2016-07-10 | Александр Николаевич Ряшенцев | Способ очистки систем теплоснабжения, водоснабжения и водоотведения от загрязнений |
NL2015613B1 (en) * | 2015-10-14 | 2017-05-08 | Fluidor Equipment B V | Method and system for clearing a pipe system. |
RU2674103C1 (ru) * | 2017-12-25 | 2018-12-04 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный технический университет" | Способ промывки системы водяного отопления, оборудованной емкостными отопительными приборами |
US11214450B1 (en) * | 2021-03-11 | 2022-01-04 | Cciip Llc | Method of proofing an innerduct/microduct and proofing manifold |
KR102348009B1 (ko) * | 2021-05-13 | 2022-01-06 | 한밭대학교 산학협력단 | 상수관로 세척장치 및 그 장치를 이용한 상수관로 세척방법 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2629301A1 (de) * | 1976-06-30 | 1978-01-05 | Enneking Heinz Dr Rer Nat | Entsorgungsvorrichtung fuer abfallwasser mit einer druckwasserleitung |
JPS5380763A (en) * | 1976-12-24 | 1978-07-17 | Fuji Electric Co Ltd | Cleaning system for raw wastes conveyer facilties using pneumatic conveyer |
DE2948201C2 (de) * | 1979-11-30 | 1985-09-26 | Degussa Ag, 6000 Frankfurt | Vorrichtung und Verfahren zum periodischen Abreinigen von Wärmeaustauscherrohren von Feststoffablagerungen und Verwendung dieser Vorrichtung |
JPS5827679A (ja) * | 1981-08-13 | 1983-02-18 | 早川 末吉 | パイプクリ−ニング方法及び装置 |
JPS59189981A (ja) * | 1983-04-11 | 1984-10-27 | 株式会社日本プラントサ−ビスセンタ− | パイプのクリ−ニング方法 |
US5724701A (en) * | 1994-08-15 | 1998-03-10 | Jones; Edward Ames | H.V.A.C. duct cleaning system |
US5915395A (en) * | 1996-05-29 | 1999-06-29 | St Environmental Services | Method for the cleaning of water mains |
-
1999
- 1999-09-04 GB GB9920876A patent/GB2353837B/en not_active Revoked
-
2000
- 2000-09-04 ES ES00956733T patent/ES2248105T3/es not_active Expired - Lifetime
- 2000-09-04 DK DK00956733T patent/DK1220722T3/da active
- 2000-09-04 DE DE60022213T patent/DE60022213T2/de not_active Expired - Fee Related
- 2000-09-04 AU AU68596/00A patent/AU6859600A/en not_active Abandoned
- 2000-09-04 JP JP2001521478A patent/JP4854898B2/ja not_active Expired - Lifetime
- 2000-09-04 AT AT00956733T patent/ATE302656T1/de not_active IP Right Cessation
- 2000-09-04 WO PCT/GB2000/003394 patent/WO2001017700A1/en active IP Right Grant
- 2000-09-04 EP EP00956733A patent/EP1220722B1/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7950403B2 (en) | 2007-03-08 | 2011-05-31 | The Coca-Cola Company | Pipe clearing systems |
CN101626844B (zh) * | 2007-03-08 | 2013-04-10 | 可口可乐公司 | 管道清洁系统 |
US9085018B2 (en) | 2007-03-08 | 2015-07-21 | The Coca-Cola Company | Pipe clearing systems |
Also Published As
Publication number | Publication date |
---|---|
ES2248105T3 (es) | 2006-03-16 |
GB2353837A (en) | 2001-03-07 |
EP1220722A1 (en) | 2002-07-10 |
AU6859600A (en) | 2001-04-10 |
GB2353837A8 (en) | 2004-05-19 |
JP4854898B2 (ja) | 2012-01-18 |
GB9920876D0 (en) | 1999-11-10 |
DE60022213T2 (de) | 2006-06-01 |
DE60022213D1 (de) | 2005-09-29 |
GB2353837B (en) | 2003-02-26 |
ATE302656T1 (de) | 2005-09-15 |
JP2003508220A (ja) | 2003-03-04 |
WO2001017700A1 (en) | 2001-03-15 |
DK1220722T3 (da) | 2005-11-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1220722B1 (en) | Methods and apparatus for clearing pipes | |
US5680877A (en) | System for and method of cleaning water distribution pipes | |
US4986311A (en) | Apparatus for clearing frozen water lines | |
US9932114B2 (en) | Method for controlling the vacuum generator(s) in a vacuum sewage system | |
US5575304A (en) | Vacuum sewer system | |
US7152618B2 (en) | Vacuum station and the method for operating the same | |
CN1913983B (zh) | 用以清洁泥浆输送管的设备和方法 | |
EP1872877B1 (en) | Method and apparatus for clearing pipes | |
CN110431367B (zh) | 积聚和排泄来自制冷和冷却装置的除霜水和冷凝水的装置 | |
WO2005049239A1 (en) | Cleaning duct walls | |
CN110735477A (zh) | 一种便于疏通的排污管道 | |
CA2513084C (en) | Cleaning apparatus for exhaust system and method | |
JP4915496B2 (ja) | 排水管のクリーニング装置におけるクリーニング補助具 | |
US4229852A (en) | Portable pipe cleaning apparatus | |
KR101039255B1 (ko) | 보수 및 관리가 용이한 대구경의 관로시스템 | |
US5498141A (en) | Hygienic tank lorry pump and tank truck | |
KR200431713Y1 (ko) | 잔류물 제거 기능을 갖는 농약방제기 | |
JP4023026B2 (ja) | ガス管からのドレン排出設備 | |
NO875471L (no) | Fremgangsmaate for tankrengjoering og en traktor for bruk deri. | |
US20090014036A1 (en) | Clearing pipework in oil refineries and other plant having extensive pipework | |
RU2735960C1 (ru) | Комплекс для приема сточных вод с автоматизированным устройством гидросмыва | |
SU1696340A1 (ru) | Автоцистерна дл жидкости | |
KR102556192B1 (ko) | 복수개의 가압 펌프를 포함한 관로 세척 장치 및 세척 방법 | |
US2297756A (en) | Dredging apparatus | |
JP2017089995A (ja) | 自動排液装置及び排液方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20020328 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
17Q | First examination report despatched |
Effective date: 20031029 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: WHIRLWIND TECHNOLOGIES LIMITED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20050904 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REF | Corresponds to: |
Ref document number: 60022213 Country of ref document: DE Date of ref document: 20050929 Kind code of ref document: P |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050930 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: E. BLUM & CO. PATENTANWAELTE |
|
REG | Reference to a national code |
Ref country code: GR Ref legal event code: EP Ref document number: 20050403251 Country of ref document: GR |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2248105 Country of ref document: ES Kind code of ref document: T3 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20060526 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PFA Owner name: WHIRLWIND TECHNOLOGIES LIMITED Free format text: WHIRLWIND TECHNOLOGIES LIMITED#93 WELLINGTON ROAD NORTH STOCKPORT,#CHESHIRE SK4 2LR (GB) -TRANSFER TO- WHIRLWIND TECHNOLOGIES LIMITED#EARL STREET WORKS,EARL STREET#STOCKPORT, CHESHIRE SK3 9JZ (GB) |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: TE4A Owner name: WHIRLWIND TECHNOLOGIES LIMITED, GB Effective date: 20070226 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: CA |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20080925 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20081130 Year of fee payment: 9 Ref country code: DE Payment date: 20081127 Year of fee payment: 9 Ref country code: DK Payment date: 20081128 Year of fee payment: 9 Ref country code: IE Payment date: 20081216 Year of fee payment: 9 Ref country code: LU Payment date: 20081203 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20081127 Year of fee payment: 9 Ref country code: FI Payment date: 20081212 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20081224 Year of fee payment: 9 Ref country code: SE Payment date: 20081128 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20081128 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GR Payment date: 20081217 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20090112 Year of fee payment: 9 |
|
BERE | Be: lapsed |
Owner name: *WHIRLWIND TECHNOLOGIES LTD Effective date: 20090930 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E Free format text: REGISTERED BETWEEN 20100311 AND 20100317 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: V1 Effective date: 20100401 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090904 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
EUG | Se: european patent has lapsed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E Free format text: REGISTERED BETWEEN 20100408 AND 20100414 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: S28 Free format text: APPLICATION FILED |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20090904 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20100531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090904 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100401 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100401 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090930 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090904 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090930 Ref country code: GR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100406 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090904 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090930 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: S28 Free format text: RESTORATION ALLOWED Effective date: 20110202 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090904 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090904 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090905 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: PT Payment date: 20110916 Year of fee payment: 12 |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: MM4A Free format text: LAPSE DUE TO NON-PAYMENT OF FEES Effective date: 20130304 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20130304 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20200330 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: PE20 Expiry date: 20200903 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20200903 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20200630 Year of fee payment: 20 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20200905 |