CA2047055A1 - Pump system - Google Patents
Pump systemInfo
- Publication number
- CA2047055A1 CA2047055A1 CA 2047055 CA2047055A CA2047055A1 CA 2047055 A1 CA2047055 A1 CA 2047055A1 CA 2047055 CA2047055 CA 2047055 CA 2047055 A CA2047055 A CA 2047055A CA 2047055 A1 CA2047055 A1 CA 2047055A1
- Authority
- CA
- Canada
- Prior art keywords
- pipe
- pump
- commuting
- medium
- pump system
- 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.)
- Abandoned
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/141—Intermediate liquid piston between the driving piston and the pumped liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/04—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being hot or corrosive
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
A B S T R A C T
Pump system provided with a displacement pump with a horizontal commuting-pipe, which commuting-pipe is connected on one side to a feed-pipe via a primary one-way valve for the purpose of sucking a quantity of medium into the commu-ting-pipe, and which commuting-pipe is likewise connected on that side to a removal-pipe via a second one-way valve for the purpose of pushing a corresponding quantity of medium cut of the commuting-pipe. The said pump system also possesses a bent pipe, which bent pipe is connected to the other side of the commuting-pipe and also to the displacement pump, aswell as a vertical pipe and heat exchanging media. The said dis-placement pump is a plunger-membrane pump which is mounted in the vertical pipe, and the said heat exchanging media are mounted around the vertical pipe.
Pump system provided with a displacement pump with a horizontal commuting-pipe, which commuting-pipe is connected on one side to a feed-pipe via a primary one-way valve for the purpose of sucking a quantity of medium into the commu-ting-pipe, and which commuting-pipe is likewise connected on that side to a removal-pipe via a second one-way valve for the purpose of pushing a corresponding quantity of medium cut of the commuting-pipe. The said pump system also possesses a bent pipe, which bent pipe is connected to the other side of the commuting-pipe and also to the displacement pump, aswell as a vertical pipe and heat exchanging media. The said dis-placement pump is a plunger-membrane pump which is mounted in the vertical pipe, and the said heat exchanging media are mounted around the vertical pipe.
Description
2~4~10~
Title: Pump System Description.
The invention concerns a pump syste~ provided with a displacement pump with a horizontal commuting-pipe, said commuting-pipe being connected on one side to a feed-pipe via a primary one-way valve to allow sucking of a quantity of medium from the feed-pipe into the commuting-pipe, said 10 commuting-pipe being likewise connected Oll that side to a r~moval-pipe via a second one-way valve in order to allo~
pushing of a corresponding quantity of medium out of -the commuting-pipe, whereby said pump system possesses a bent pipe which is connected to the other side of the commwting-15 pipe and which is coupled to the displacement pump, and thesaid pump system also possesses a vertical pipe and heat-ex-changing media.
Such a pump system is known from EP-A-0048535. The known pump system is provided ~Jith a displacement pump in the 20 form of a cylinder-plunger pump, said cylinder-plunger pump being connected to a horizontal pipe, around which pipe heat exchanging media have been placed. The horizontal pipe is connected to a vertical pipe. The uppermost part of said vertical pipe is provided with a valve, said valve functio-25 ning as a gas-pressure exhaust and being of service in taking samples for the purpose of checking the degree of pollution of the medium in the vertical pipe, said valve also functi-oning as the means by which li~uid can be locally in~ected and, furthermore, serving as a liquid-exhaust for working 30 media injected into the cylinder-plunger pump. The undermost part of the said vertical pipe is connected to the bent pipe via an expansion chamber~ The expansion chamber, ~hich pos-sesses a relatively large cross-section, is provided wi-~h a stabilising device in order to limit Reynolds' Number for the 35 flow in the said chamber to 2000. The cross-section of the expansion chamber is greater than the cross-section of the vertical pipe, and the cross-section of the vertical pipe is smaller than that of the horizontal pipe.
2~70~
With the aid of the liquid injection-system, a quanti-ty of working medium is injected into the cylinder-p:Lunger pump, this quantity being continually greater than the leaka-ge~losses which occur along the displacement body which moves 5 back and forth in the plunger pump. The iniection of fresh and cool working medium maintains the necessary low working temperature in the displacement pump, and ensures that the medium to be pumped, which is generally aggressive and hot, does not come into contact with the pump.
The known pump system is complicated.
The purpose of the invention is the provision of a pump system in which a plunger-membrane pump can be used to transport hot, erosive media (in particular, sludges which, due to inadequate flow-rate, deposit sediment in the system) 15 and in which injection of a working medium into the medium to be pumped does not have to occur at the installation site of the pump system.
~ o this end, the pump system according to the inventi-on is characterised by the fact that the displacement pump is ;~ 20 a plunger-membrane pump, that the said plunger-membrane pump is mounted in the vertical pipe, and that the heat exchanging media are mounted around the said vertical pipe.
At this point, it should be stated that the term "membrane pump" ought to be interpreted as referring to a 25 pump whose operation is based on the motion of a hermetically sealed element. The motion of this element, which, for e~am-ple, can take the form of a me~ran~, bellows, hose, etc., can be effected by a pneumatically or mechanically driven organ which is directly coupled to the said element. The said 30 motion can also be effected indirectly, meaning that the motion of a displacement-body, such as a plunger, is trans-ferred to the hermetically sealed element via an intervening medium, often a liquid.
The advantage of the pump system according to the 35 invention is that, by using the membrane pump, any pump fluid which has to be injected cannot leak through the membrane. In this way, the vertical pipe in particular remains free of injected medium. The embodiment of the pump system according .
2~7~
to the invention is also simpler because of the fact that the plunger-membrane pump is directly fitted into the vertical pipe, around which the heat exchanging media are also moun-ted. The result is that a horizontal pipe which, in the known 5 system, led from the pump to the vertical pipe, becomes de~
funct. Moreover, insulation of the vertical pipe is unneces-sary, and an expansion chamber with associated stabilisation device is no longer required.
The pump system according to the invention does not lO require any special working medium. If a very hot medium is being pumped, one can still inject a cooling medium if one wishes. This cooling medium can, ~Jithout any problem, itself be part of the medium to be pumped (~hence the cooling medium will, of course, have to be pre-cooled somewhat). Use of a 15 working medium different from the medium to be pumped is not really necessary.
A further advantage of the pump system according to the invention is that the somewhat elastically deformable angular pipe-section which includes the commuting-pipe, the 20 bent pipe and the additional pipe, can, in the event of temperature-changes, withstand expansion ~nd contraction.
This means that, ~hen pumping media with widely varying temperatures, the occurrance of large forces and deformations is avoided at locations in the pump system where these would 25 be undesirable.
The said pump system according to the invention takes up little floor space, thanks to the construction and place-ment of the distinct components. As a result, the costs of constructing and maintaining a housing for placement of the 30 said pump system are limited.
In addition, it is advantageous that the cross-secti-ons of the horizontal pipe, the bent pipe and the vertical pipe can remain the same, since, in this way, the probability o~ blockages occurring in the pump system according to the 35 invention is considerably reduced.
A preferential embodiment of the pump system according to the invention is characterised by the fact that the capa-city of the commuting-pipe is larger than the stroke-volume 2g~7~
of the plunger-membrane pump by a factor which is dependent on Reynolds' Number for the medium to be pumped.
The advantage of this embodiment of the pump system according to the invention is that the so-called turning 5 point (i.e. that point nearest the membrane pump which demar-cates the internal volume of the commuting-pipe, said commu-ting-pipe being filled time after time with sucked-in medium) is located in the commuting-pipe itself. ~s a result, the ~uantity of heat given off by the hot medium will only be 10 significant in the commuting-pipe itself, and the additional pipe does not come into direct contact with the hot medium.
In this way, the heat capacity of the heat e~changing media can be further limited, in order to accomplish a sufficiently low temperature near the membrane pump.
In practice, the said factor lies in the range 1.2 to 5, usually around 1.5.
It is preferable to have the radius of the bent pipe equal to at least about 1.5 times the internal diameter of the bent pipe.
The invention, along with its other advantages, shall be further elucidated using the accompanying figure, which figure shows a prelerential embodiment of the pump system according to the invention.
The figure shows a pump system 1 which contains a 25 feed-pipe 2 and a removal pipe 3. The pump system 1 also contains a partially sketched displacement pump ~ for suckin~
in a medium 5 (e.g. a sludge) from the feed-pipe 2 via a primary one-way valve 6 in a commuting-pipe 7, which commu-ting-pipe 7 is usually horizontally placed. The sucking-in of 3~ ths medium 5 occurs in a suction phase, which is followed by a compression phase in which the medium 5 which has accumula-ted in the commuting-pipe 7 is pushed via a second one-way valve ~ into the removal-pipe 3, said removal-pipe being directly connected to the commuting-pipe 7. Both one-way 35 valves 6 and 8 ta~e the form of ball valves in the depicted embodiment; in the suction phase, valve 6 opens and valve 8 closes, whereas in the compression phase, valve 6 is closed and valve 8 is opened.
20~7~
Point A indicates the position oE the turning point or boundary in the commuting-pipe, ~hich point marks the positi-on in the commuting-pipe to which medium 5 is sucked before being removed again.
A bent pipe 9 i5 coupled to the commuting-pipe, and coupled to the bent pipe 9 is a pipe 10 which is preferably placed vertically. Heat exchanging media 11 are located around the pipe 10, which media shall, in general, include a heat exchanger through which cooling fluid can flow (in a 10 manner and with the aid of media which are not depicted in the figure).
By placing the pipe 10 vertically, one ensures that the turning point A in the commuting-pipe 7 stays still, and does not move through the bent pipe 9 in the direction of the 15 heat exchanging media 11 and the pump ~. Due to the action of gravity, the medium near the displacement pump ~ will have a greater tendency to sink downward, thereby pushing the turning point A toward the commuting-pipe 7, thus guaranteeing a good and long-lasting performance of the 20 displacement pump (embodied as a plunger-membrane pump).
The membrane pump 4 possesses a membrane 12 which is mounted in a pump housing 13, said pump housing being connec-ted to the pipe 10. The membrane pump is provided with a ; plunger-rod 14 which is moved back and forth by fitting 25 driving media. Attached to the plunger-rod 14 ia a displace-ment body 15 which is movable in a cylinder 16. If so desi-red, the plunger-rod 14 can directly bring the membrane 12 into a back-and-forth motion, but this motion can also be effected via an intervening medium 17 (shown in the figure), 30 which medium is brought into back-and-forth motion by the displacement body 15 and which transfers this motion to the membrane 12. The back-and-forth motion of the membrane 12 gives rise to the respective suction and compression phases whereby the medi~m 5 is transported from the feed-pipe 2 into 35 the removal-pipe 3. The quantity of heat ~hich hereby reaches the membrane 12 (which membrane is to be protected against this heat) is minimal, this being due to the fact that the relatively hot medium 5 remains at a relatively large distan-2~7~
ce from this membrane 12. In this way, the heat ~hich iscontained in the hot medium 5 to the right of A can only reach the area to the left of A by conduction. If the medium to the left of A is heated, this surplus heat will be removed 5 via the heat exchanging media 11, whereby the membrane 12 will show only a slight temperature-rise as a result of addition of the hot medium.
The membrane pump can be of the single type, working in the manner just ~escribed, but can also be of the dual 10 type, in which case there is also an intervening medium to the left of the displacement body 15, which medium is capable of moving a membrane (not depicted) and driving a further pump system. If so desired, it is of course possible to employ multiple plunger-rods (not depicted) in parallel, with 15 single or dual type displacement pumps.
In general, the stroke-volume of the displacement pump 4 will be smaller than the internal volume of the commuting-pipe 7, so that the boundary A shall remain situated in the commuting-pipe 7. How much smaller depends on a factor which, 20 given the temperature of the sludge, is determined empirical-ly via ~eynolds' Number. In practice, this factor lies in general between 1.2 and 5. If so desired, a cooling medium can be introduced at the upper face of the pump housing 13 (which cooling medium can be the same as the medium 5), with 25 the purpose of ensuring that the boundary ~ remains situated sufficiently deep within the commuting-pipe and of preventing too much heat from reaching the media 11 and the pump 4.
It is preferable to have the radius of the bent pipe 9 equal to at least about one and a half times the internal 30 diameter of the pipe 9, and, moreover, to have the diameters of the pipes 7, 9 and 10 equal, so that the probability of blockages is very small.
Title: Pump System Description.
The invention concerns a pump syste~ provided with a displacement pump with a horizontal commuting-pipe, said commuting-pipe being connected on one side to a feed-pipe via a primary one-way valve to allow sucking of a quantity of medium from the feed-pipe into the commuting-pipe, said 10 commuting-pipe being likewise connected Oll that side to a r~moval-pipe via a second one-way valve in order to allo~
pushing of a corresponding quantity of medium out of -the commuting-pipe, whereby said pump system possesses a bent pipe which is connected to the other side of the commwting-15 pipe and which is coupled to the displacement pump, and thesaid pump system also possesses a vertical pipe and heat-ex-changing media.
Such a pump system is known from EP-A-0048535. The known pump system is provided ~Jith a displacement pump in the 20 form of a cylinder-plunger pump, said cylinder-plunger pump being connected to a horizontal pipe, around which pipe heat exchanging media have been placed. The horizontal pipe is connected to a vertical pipe. The uppermost part of said vertical pipe is provided with a valve, said valve functio-25 ning as a gas-pressure exhaust and being of service in taking samples for the purpose of checking the degree of pollution of the medium in the vertical pipe, said valve also functi-oning as the means by which li~uid can be locally in~ected and, furthermore, serving as a liquid-exhaust for working 30 media injected into the cylinder-plunger pump. The undermost part of the said vertical pipe is connected to the bent pipe via an expansion chamber~ The expansion chamber, ~hich pos-sesses a relatively large cross-section, is provided wi-~h a stabilising device in order to limit Reynolds' Number for the 35 flow in the said chamber to 2000. The cross-section of the expansion chamber is greater than the cross-section of the vertical pipe, and the cross-section of the vertical pipe is smaller than that of the horizontal pipe.
2~70~
With the aid of the liquid injection-system, a quanti-ty of working medium is injected into the cylinder-p:Lunger pump, this quantity being continually greater than the leaka-ge~losses which occur along the displacement body which moves 5 back and forth in the plunger pump. The iniection of fresh and cool working medium maintains the necessary low working temperature in the displacement pump, and ensures that the medium to be pumped, which is generally aggressive and hot, does not come into contact with the pump.
The known pump system is complicated.
The purpose of the invention is the provision of a pump system in which a plunger-membrane pump can be used to transport hot, erosive media (in particular, sludges which, due to inadequate flow-rate, deposit sediment in the system) 15 and in which injection of a working medium into the medium to be pumped does not have to occur at the installation site of the pump system.
~ o this end, the pump system according to the inventi-on is characterised by the fact that the displacement pump is ;~ 20 a plunger-membrane pump, that the said plunger-membrane pump is mounted in the vertical pipe, and that the heat exchanging media are mounted around the said vertical pipe.
At this point, it should be stated that the term "membrane pump" ought to be interpreted as referring to a 25 pump whose operation is based on the motion of a hermetically sealed element. The motion of this element, which, for e~am-ple, can take the form of a me~ran~, bellows, hose, etc., can be effected by a pneumatically or mechanically driven organ which is directly coupled to the said element. The said 30 motion can also be effected indirectly, meaning that the motion of a displacement-body, such as a plunger, is trans-ferred to the hermetically sealed element via an intervening medium, often a liquid.
The advantage of the pump system according to the 35 invention is that, by using the membrane pump, any pump fluid which has to be injected cannot leak through the membrane. In this way, the vertical pipe in particular remains free of injected medium. The embodiment of the pump system according .
2~7~
to the invention is also simpler because of the fact that the plunger-membrane pump is directly fitted into the vertical pipe, around which the heat exchanging media are also moun-ted. The result is that a horizontal pipe which, in the known 5 system, led from the pump to the vertical pipe, becomes de~
funct. Moreover, insulation of the vertical pipe is unneces-sary, and an expansion chamber with associated stabilisation device is no longer required.
The pump system according to the invention does not lO require any special working medium. If a very hot medium is being pumped, one can still inject a cooling medium if one wishes. This cooling medium can, ~Jithout any problem, itself be part of the medium to be pumped (~hence the cooling medium will, of course, have to be pre-cooled somewhat). Use of a 15 working medium different from the medium to be pumped is not really necessary.
A further advantage of the pump system according to the invention is that the somewhat elastically deformable angular pipe-section which includes the commuting-pipe, the 20 bent pipe and the additional pipe, can, in the event of temperature-changes, withstand expansion ~nd contraction.
This means that, ~hen pumping media with widely varying temperatures, the occurrance of large forces and deformations is avoided at locations in the pump system where these would 25 be undesirable.
The said pump system according to the invention takes up little floor space, thanks to the construction and place-ment of the distinct components. As a result, the costs of constructing and maintaining a housing for placement of the 30 said pump system are limited.
In addition, it is advantageous that the cross-secti-ons of the horizontal pipe, the bent pipe and the vertical pipe can remain the same, since, in this way, the probability o~ blockages occurring in the pump system according to the 35 invention is considerably reduced.
A preferential embodiment of the pump system according to the invention is characterised by the fact that the capa-city of the commuting-pipe is larger than the stroke-volume 2g~7~
of the plunger-membrane pump by a factor which is dependent on Reynolds' Number for the medium to be pumped.
The advantage of this embodiment of the pump system according to the invention is that the so-called turning 5 point (i.e. that point nearest the membrane pump which demar-cates the internal volume of the commuting-pipe, said commu-ting-pipe being filled time after time with sucked-in medium) is located in the commuting-pipe itself. ~s a result, the ~uantity of heat given off by the hot medium will only be 10 significant in the commuting-pipe itself, and the additional pipe does not come into direct contact with the hot medium.
In this way, the heat capacity of the heat e~changing media can be further limited, in order to accomplish a sufficiently low temperature near the membrane pump.
In practice, the said factor lies in the range 1.2 to 5, usually around 1.5.
It is preferable to have the radius of the bent pipe equal to at least about 1.5 times the internal diameter of the bent pipe.
The invention, along with its other advantages, shall be further elucidated using the accompanying figure, which figure shows a prelerential embodiment of the pump system according to the invention.
The figure shows a pump system 1 which contains a 25 feed-pipe 2 and a removal pipe 3. The pump system 1 also contains a partially sketched displacement pump ~ for suckin~
in a medium 5 (e.g. a sludge) from the feed-pipe 2 via a primary one-way valve 6 in a commuting-pipe 7, which commu-ting-pipe 7 is usually horizontally placed. The sucking-in of 3~ ths medium 5 occurs in a suction phase, which is followed by a compression phase in which the medium 5 which has accumula-ted in the commuting-pipe 7 is pushed via a second one-way valve ~ into the removal-pipe 3, said removal-pipe being directly connected to the commuting-pipe 7. Both one-way 35 valves 6 and 8 ta~e the form of ball valves in the depicted embodiment; in the suction phase, valve 6 opens and valve 8 closes, whereas in the compression phase, valve 6 is closed and valve 8 is opened.
20~7~
Point A indicates the position oE the turning point or boundary in the commuting-pipe, ~hich point marks the positi-on in the commuting-pipe to which medium 5 is sucked before being removed again.
A bent pipe 9 i5 coupled to the commuting-pipe, and coupled to the bent pipe 9 is a pipe 10 which is preferably placed vertically. Heat exchanging media 11 are located around the pipe 10, which media shall, in general, include a heat exchanger through which cooling fluid can flow (in a 10 manner and with the aid of media which are not depicted in the figure).
By placing the pipe 10 vertically, one ensures that the turning point A in the commuting-pipe 7 stays still, and does not move through the bent pipe 9 in the direction of the 15 heat exchanging media 11 and the pump ~. Due to the action of gravity, the medium near the displacement pump ~ will have a greater tendency to sink downward, thereby pushing the turning point A toward the commuting-pipe 7, thus guaranteeing a good and long-lasting performance of the 20 displacement pump (embodied as a plunger-membrane pump).
The membrane pump 4 possesses a membrane 12 which is mounted in a pump housing 13, said pump housing being connec-ted to the pipe 10. The membrane pump is provided with a ; plunger-rod 14 which is moved back and forth by fitting 25 driving media. Attached to the plunger-rod 14 ia a displace-ment body 15 which is movable in a cylinder 16. If so desi-red, the plunger-rod 14 can directly bring the membrane 12 into a back-and-forth motion, but this motion can also be effected via an intervening medium 17 (shown in the figure), 30 which medium is brought into back-and-forth motion by the displacement body 15 and which transfers this motion to the membrane 12. The back-and-forth motion of the membrane 12 gives rise to the respective suction and compression phases whereby the medi~m 5 is transported from the feed-pipe 2 into 35 the removal-pipe 3. The quantity of heat ~hich hereby reaches the membrane 12 (which membrane is to be protected against this heat) is minimal, this being due to the fact that the relatively hot medium 5 remains at a relatively large distan-2~7~
ce from this membrane 12. In this way, the heat ~hich iscontained in the hot medium 5 to the right of A can only reach the area to the left of A by conduction. If the medium to the left of A is heated, this surplus heat will be removed 5 via the heat exchanging media 11, whereby the membrane 12 will show only a slight temperature-rise as a result of addition of the hot medium.
The membrane pump can be of the single type, working in the manner just ~escribed, but can also be of the dual 10 type, in which case there is also an intervening medium to the left of the displacement body 15, which medium is capable of moving a membrane (not depicted) and driving a further pump system. If so desired, it is of course possible to employ multiple plunger-rods (not depicted) in parallel, with 15 single or dual type displacement pumps.
In general, the stroke-volume of the displacement pump 4 will be smaller than the internal volume of the commuting-pipe 7, so that the boundary A shall remain situated in the commuting-pipe 7. How much smaller depends on a factor which, 20 given the temperature of the sludge, is determined empirical-ly via ~eynolds' Number. In practice, this factor lies in general between 1.2 and 5. If so desired, a cooling medium can be introduced at the upper face of the pump housing 13 (which cooling medium can be the same as the medium 5), with 25 the purpose of ensuring that the boundary ~ remains situated sufficiently deep within the commuting-pipe and of preventing too much heat from reaching the media 11 and the pump 4.
It is preferable to have the radius of the bent pipe 9 equal to at least about one and a half times the internal 30 diameter of the pipe 9, and, moreover, to have the diameters of the pipes 7, 9 and 10 equal, so that the probability of blockages is very small.
Claims (5)
1. Pump system provided with a displacement pump (4) with a horizontal commuting-pipe (7), which commuting-pipe (7) is connected on one side to a feed-pipe (2) via a primary one-way valve (6) for the purpose of sucking a quantity of medium into the commuting-pipe (7), and which commuting-pipe (7) is likewise connected on that side to a removal-pipe (3) via a second one-way valve (8) for the purpose of pushing a corresponding quantity of medium out of the commuting pipe (7), whereby said pump system possesses a bent pipe (9), which bent pipe (9) is connected to the other side of the commuting-pipe (7) and also to the displacement pump (4), whereby said pump system also possesses a vertical pipe (10) and heat exchanging media (11), characterised in that the displacement pump (4) is a plunger-membrane pump, that the plunger-membrane pump (4) is mounted in the vertical pipe (10) and that the heat exchanging media (11) are mounted around the vertical pipe (10).
2. Pump system according to claim 1, characterised in that the capacity of the commuting-pipe is larger than the stroke-volume of the plunger-membrane pump by a factor which depends on Reynolds' Number for the medium to be pumped.
3. Pump system according to claim 2, characterised in that the said factor lies between 1.2 and 5.
4. Pump system according to claim 3, characterised in that the said factor is approximately 1.5.
5. Pump system according to one of the claims 1.- 4, characterised in that the radius of the bent pipe (9) is at least equal to approximately 1.5 times the internal diameter of the bent pipe (9).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL9001676 | 1990-07-24 | ||
| NL9001676A NL9001676A (en) | 1990-07-24 | 1990-07-24 | PUMP SYSTEM. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2047055A1 true CA2047055A1 (en) | 1992-01-25 |
Family
ID=19857463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2047055 Abandoned CA2047055A1 (en) | 1990-07-24 | 1991-07-15 | Pump system |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA2047055A1 (en) |
| DE (1) | DE4124290A1 (en) |
| NL (1) | NL9001676A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8940250B2 (en) | 2009-07-09 | 2015-01-27 | Basf Se | Method of conveying liquids |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1004890C2 (en) | 1996-12-24 | 1998-06-25 | Envirotech Pumpsystems Netherl | Pump system particularly suitable for pumping hot media. |
| DE102005017476B4 (en) * | 2005-04-16 | 2007-09-06 | Abel Gmbh & Co. Kg | Piston diaphragm or piston pump |
| DE202008010872U1 (en) * | 2008-08-14 | 2010-02-25 | Bran+Luebbe Gmbh | pump device |
| DE102013112476A1 (en) * | 2013-11-13 | 2015-05-13 | Mhwirth Gmbh | Hot sludge pump |
| DE102013114320A1 (en) * | 2013-12-18 | 2015-06-18 | Mhwirth Gmbh | Hot sludge pump |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3012028A1 (en) * | 1980-03-28 | 1981-10-08 | Josef Emmerich Pumpenfabrik GmbH, 5481 Hönningen | DEVICE FOR CONVEYING FLOWABLE MEDIA |
| US4378183A (en) * | 1980-09-18 | 1983-03-29 | The Pittsburgh & Midway Coal Mining Co. | Apparatus and method for pumping hot, erosive slurry of coal solids in coal derived, water immiscible liquid |
-
1990
- 1990-07-24 NL NL9001676A patent/NL9001676A/en active Search and Examination
-
1991
- 1991-07-15 CA CA 2047055 patent/CA2047055A1/en not_active Abandoned
- 1991-07-22 DE DE19914124290 patent/DE4124290A1/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8940250B2 (en) | 2009-07-09 | 2015-01-27 | Basf Se | Method of conveying liquids |
Also Published As
| Publication number | Publication date |
|---|---|
| NL9001676A (en) | 1992-02-17 |
| DE4124290A1 (en) | 1992-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SU1052172A3 (en) | System for conveying secondary liquid fluids | |
| CA2460869C (en) | High pressure pump system for supplying a cryogenic fluid from a storage tank | |
| CN100373040C (en) | Method and apparatus for delivering pressurized gas | |
| JP2005538315A (en) | Liquefied gas and compressed gas refueling station and method of operating the same | |
| BRPI0816656B1 (en) | method for compressing gaseous fuel to fuel vehicle and device for implementation thereof | |
| JPH07111170B2 (en) | Pressure transfer fluid heater | |
| US3951204A (en) | Method and apparatus for thermally circulating a liquid | |
| CA2047055A1 (en) | Pump system | |
| JPS60111893A (en) | Storage tank device | |
| US3632235A (en) | Cryogenic pump system | |
| GB1375429A (en) | ||
| US5575627A (en) | High and low pressure two stage pump and pumping method | |
| US5310321A (en) | Pump system | |
| KR102293712B1 (en) | Air Compression Device including Liquid Piston | |
| JPS6030485A (en) | Piston driven temperature difference pump | |
| SU777261A1 (en) | Heat pump | |
| JPS60173375A (en) | Liquid conveying temperature differential pump making control valve on-off operation into nonelectrification | |
| CN206874412U (en) | Diesel oil feeding pipe | |
| RU2343312C1 (en) | Heat-insulating air-powered drive | |
| SU1019070A1 (en) | Arrangement for pumping a cryogenic fluid | |
| CN110905755B (en) | Metering pump | |
| CN209012011U (en) | A kind of fish oil pumping installations | |
| CN209781358U (en) | Mechanical hydraulic device capable of preventing oil pipe from condensing | |
| US766017A (en) | Compressor. | |
| CN106195271A (en) | A kind of cooling and lubricating device of pump machine envelope |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |