EP0274374A2 - Hydraulische Pumpeinrichtung - Google Patents
Hydraulische Pumpeinrichtung Download PDFInfo
- Publication number
- EP0274374A2 EP0274374A2 EP87870208A EP87870208A EP0274374A2 EP 0274374 A2 EP0274374 A2 EP 0274374A2 EP 87870208 A EP87870208 A EP 87870208A EP 87870208 A EP87870208 A EP 87870208A EP 0274374 A2 EP0274374 A2 EP 0274374A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- air chamber
- discharge
- frame
- valve
- inlet
- 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- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F7/00—Pumps displacing fluids by using inertia thereof, e.g. by generating vibrations therein
- F04F7/02—Hydraulic rams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
Definitions
- the present invention relates to a pumping device for liquid intended to be entrained by a channeled liquid drop and serving to deliver the liquid to a level greater than the height of the channeled drop.
- a known device of this kind is the hydraulic Garvens ram which is distinguished by a small size and reduced weight.
- This apparatus comprises a pump body containing a discharge valve, an air bell fixed above the pump body and a stop valve box fixed in the extension of the pump body.
- Each device model was intended for a certain range of supply rates and to be used with inlet and outlet ducts of specified diameters.
- the discharge line was connected to the pump body downstream of the discharge valve.
- the length of the water supply line was variable as well as the diameters of the supply and delivery lines and the characteristics of the device varied according to the supply flow and the diameters of the lines.
- the disadvantages of the Garvens ram are its poor performance and the noise caused by its operation.
- the quantity of water discharged was defined by the manufacturer as being able to be equal to one tenth of the quantity of water supplied for a high discharge force equal to seven times the height of the driving fall.
- the object of the invention is to provide a hydraulic device which in particular has performances far superior to those of prior devices.
- a delivery device comprising a frame which comprises at least one inlet connected to a liquid supply pipe creating a driving fall, a delivery outlet provided with a delivery valve and an outlet d exhaust provided with a shut-off valve, and an air chamber communicating with a discharge pipe connected in the lower part of the air chamber, this air chamber containing a flexible tight wall to form a hermetic interior enclosure for a gas.
- the device according to the invention then has performances very clearly superior to those of devices according to the prior art and its priming is automatic, which constitutes a considerable practical advantage.
- FIG. 1 there is shown a typical installation of a known hydraulic ram, designated at 10.
- This ram comprises a frame surmounted by an air bell 2.
- the frame 1 has an inlet 11 connected to a pipe supplied with liquid CA putting the apparatus in communication with a supply tank A which may be constituted by a lake, a pond or a river, for example.
- the frame 1 also has an opening 12 provided with a shut-off valve 14.
- the frame 1 has an outlet connected to a discharge line CR which opens into a discharge tank B located, by relative to the frame 1, at a height greater than that of the tank A.
- the height of the level in the tank with respect to the discharge valve is called the height of the driving drop (Hm).
- the hydraulic device 10 operates according to the following cycle.
- the liquid supplied by the line CA drives in its movement the shut-off valve 14 hence the closing thereof, which has the effect of cause a overpressure and open the discharge valve: a quantity of liquid is discharged into the discharge line CR. It then creates the joint action of a depression in the frame and the weight of the stop valve reopens it letting escape a quantity of liquid to the leakage line while the discharge valve-closes. This movement of liquid discharge and discharge is repeated a large number of times per minute.
- a known apparatus of the Garvens type is capable of delivering a maximum of one tenth of the feed rate at a maximum delivery height Hr equal to seven times the height Hm of the driving fall. The rest of the liquid is lost and escapes through the shut-off valve.
- the invention provides a repressor which incorporates a set of improvements such that they unexpectedly improve the performance of the apparatus, opening it to a range of applications for which it has hitherto been excluded from envisaging. the use of such a device.
- FIG. 2 An exemplary embodiment of the apparatus according to the invention is shown in section in Figure 2.
- a frame 1 having an inlet 11 intended for the connection of a liquid supply pipe CA, a discharge opening 13 provided with a valve 15 and an exhaust outlet 12 provided with a stop valve 14.
- an air chamber 2 communicating with the interior of the frame 1 by means of the discharge valve 15 and the opening 13.
- the discharge line CR In the lower part of the air chamber 2 is connected the discharge line CR.
- the pressure prevailing inside this air chamber 2 corresponds to the discharge pressure, in other words to the discharge height. It is therefore very advantageous to be able to vary the internal pressure of the air chamber as desired.
- a flexible waterproof membrane 20 is placed inside the chamber 2 to form an airtight inner enclosure into which is blown an adequate quantity of gas under pressure (rare gas or not) so as to optimize the discharge of liquid. Thanks to this arrangement, the delivery height is considerably increased.
- the accumulator completely eliminates the worry of air supply.
- an air purge must be provided against the diaphragm, to expel the air and so that the liquid continually follows the diaphragm during operation of the pump.
- An adjustable air introduction device 16 is advantageously provided near the discharge opening 13 to ensure an appropriate air intake so as to reduce the risk of cavitation, that is to say the formation within liquid, nests of vapor which would have the effect of attacking and destroying the walls and the organs of the pump.
- a shunt 21 which connects the upper part of the air chamber 2 and the interior volume of the frame 1.
- the device according to the invention is capable of discharging a liquid at the rate of one tenth of the feed rate at a height equal to about nine times at least the height of the driving drop.
- the distance between the discharge valve 15 and the stop valve 14 is as small as possible.
- the device according to the invention constitutes a small pressure pump which can advantageously replace a pump driven by an electric or internal combustion engine. Indeed, for equal performance, an electric pump is undoubtedly more expensive than a device according to the invention due to the consumption of significant electrical energy or fuel and due to the inevitable maintenance and repair of the transmission members.
- the lifespan of motorized devices is relatively limited.
- the frame 1 can be made with a variable cross section between the inlet 11 and the discharge outlet 13 so as to produce a venturi effect.
- FIG. 4 shows a plan view of an arrangement comprising four supply pipes CA1-CA4 associated with a single air chamber 2
- FIG. 5 shows a view in elevation.
- the delivery is made by a common delivery pipe CR.
- FIG. 6 schematically shows two apparatuses 10A, 10B in cascade.
- the leakage outlet 12 of the first device 10A is connected to the inlet 11 of the next device 10B by a line CA2 having a cross section dimensioned in proportion to the leakage rate Q f1 of the device 10A and having a length equal to the less than ten times the height of the drop between the two devices.
- a balance chimney 18 is connected on the CA2 pipe.
- the delivery device according to the invention can advantageously be installed in a floating manner as illustrated diagrammatically in FIG. 7.
- the frame 1 of the device is fixed on a floating base 22 and the supply line CA is mounted with a hinged device 23. From the fate, the device can be installed on rivers with variable speed and level and it can operate even in periods of flood.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
- Processing Of Solid Wastes (AREA)
- Preliminary Treatment Of Fibers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE217656 | 1986-12-30 | ||
BE0/217656A BE906113A (fr) | 1986-12-30 | 1986-12-30 | Appareil refoulant hydraulique. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0274374A2 true EP0274374A2 (de) | 1988-07-13 |
EP0274374A3 EP0274374A3 (de) | 1988-12-07 |
Family
ID=3844115
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87870208A Withdrawn EP0274374A3 (de) | 1986-12-30 | 1987-12-29 | Hydraulische Pumpeinrichtung |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0274374A3 (de) |
BE (1) | BE906113A (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2161450A1 (de) * | 2008-09-03 | 2010-03-10 | UAB "Alnora" | Wasserschlag betriebener Luftverdichter |
RU2484312C1 (ru) * | 2011-12-26 | 2013-06-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Казанский государственный энергетический университет" (ФГБОУ ВПО "КГЭУ") | Гидравлический таран |
RU2528795C1 (ru) * | 2013-07-30 | 2014-09-20 | Олег Викторович Якимов | Гидравлический таран |
RU2542192C1 (ru) * | 2014-02-25 | 2015-02-20 | Негосударственное образовательное учреждение "Саранский Дом науки и техники Российского Союза научных и инженерных общественных организаций" (НОУ "Саранский Дом науки и техники РСНИИОО") | Прибойный гидравлический таран |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE137997C (de) * | ||||
FR370727A (fr) * | 1906-10-24 | 1907-02-18 | Niagara Hydraulic Engine C | Bélier hydraulique |
FR453150A (fr) * | 1912-01-03 | 1913-05-31 | Sidney Merils Stevens | Perfectionnements dans les appareils pour pomper l'eau |
US1364617A (en) * | 1920-04-05 | 1921-01-04 | John C Daynix | Hydrokinetic mechanism |
FR2219694A5 (de) * | 1973-02-23 | 1974-09-20 | Roman Jean | |
DE3149841A1 (de) * | 1981-12-16 | 1983-06-30 | Pfister & Langhanß, 8500 Nürnberg | Hydraulischer widder |
-
1986
- 1986-12-30 BE BE0/217656A patent/BE906113A/fr not_active IP Right Cessation
-
1987
- 1987-12-29 EP EP87870208A patent/EP0274374A3/de not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE137997C (de) * | ||||
FR370727A (fr) * | 1906-10-24 | 1907-02-18 | Niagara Hydraulic Engine C | Bélier hydraulique |
FR453150A (fr) * | 1912-01-03 | 1913-05-31 | Sidney Merils Stevens | Perfectionnements dans les appareils pour pomper l'eau |
US1364617A (en) * | 1920-04-05 | 1921-01-04 | John C Daynix | Hydrokinetic mechanism |
FR2219694A5 (de) * | 1973-02-23 | 1974-09-20 | Roman Jean | |
DE3149841A1 (de) * | 1981-12-16 | 1983-06-30 | Pfister & Langhanß, 8500 Nürnberg | Hydraulischer widder |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2161450A1 (de) * | 2008-09-03 | 2010-03-10 | UAB "Alnora" | Wasserschlag betriebener Luftverdichter |
RU2484312C1 (ru) * | 2011-12-26 | 2013-06-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Казанский государственный энергетический университет" (ФГБОУ ВПО "КГЭУ") | Гидравлический таран |
RU2528795C1 (ru) * | 2013-07-30 | 2014-09-20 | Олег Викторович Якимов | Гидравлический таран |
RU2542192C1 (ru) * | 2014-02-25 | 2015-02-20 | Негосударственное образовательное учреждение "Саранский Дом науки и техники Российского Союза научных и инженерных общественных организаций" (НОУ "Саранский Дом науки и техники РСНИИОО") | Прибойный гидравлический таран |
Also Published As
Publication number | Publication date |
---|---|
BE906113A (fr) | 1987-06-30 |
EP0274374A3 (de) | 1988-12-07 |
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18D | Application deemed to be withdrawn |
Effective date: 19890608 |