CA2170779A1 - Device for accumulating or guiding liquid - Google Patents
Device for accumulating or guiding liquidInfo
- Publication number
- CA2170779A1 CA2170779A1 CA 2170779 CA2170779A CA2170779A1 CA 2170779 A1 CA2170779 A1 CA 2170779A1 CA 2170779 CA2170779 CA 2170779 CA 2170779 A CA2170779 A CA 2170779A CA 2170779 A1 CA2170779 A1 CA 2170779A1
- Authority
- CA
- Canada
- Prior art keywords
- container
- tube
- foregoing
- pressure
- expansion tank
- 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
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
- F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
- F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
- F15B1/18—Anti-extrusion means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
- F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
- F15B1/086—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor the gas cushion being entirely enclosed by the separating means, e.g. foam or gas-filled balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/20—Accumulator cushioning means
- F15B2201/205—Accumulator cushioning means using gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/30—Accumulator separating means
- F15B2201/315—Accumulator separating means having flexible separating means
- F15B2201/3154—Accumulator separating means having flexible separating means the flexible separating means being completely enclosed, e.g. using gas-filled balls or foam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/40—Constructional details of accumulators not otherwise provided for
- F15B2201/41—Liquid ports
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pipe Accessories (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The invention relates to a device (1) for accumulating or guiding a liquid under varying pressure, which comprises a container (2) connected to an inlet (4) and an outlet (5). The device (1) comprises at least one elastically compressible body (6) in the container (2). The device comprises enclosing means for enclosing the or each body in the container (2).
Description
2 ~ 7 0 7 7 ~ PCT~ng5/00233 DEVICE ~OR ACCUMUhATING OR GUIDING LIQUID
The invention relates to a device for accumulating or 10 guiding a liquid under varying pressure, which comprises a container connected to an inlet and an outlet.
In a first embodiment such a device forms an accumulator, or expansion tank, which is generally applied in systems in which flows of liquid under pressure are 15 used. Examples hereof are hydraulic installations and cooling and heating installations. Such an accumulator is used in these cases as storage container for the liquid under pressure or to damp pressure peaks.
In a normal central heating device the accumulator is 20 used to absorb the volume changes in the heating water as resulting from variations in temperature of that water. In - cooling installations the expansion tank likewise functions to absorb the volume changes in the cooling medium resulting from variations in the temperature of 25 that medium.
Pressure accumulators are usually embodied with a flexible membrane which closes off on one side a space in which the liquid can be absorbed and on the other side is loaded with spring or gas pressure.
It is known that the life-span of usual accumulators, particularly of the membrane thereof, is limited. During the total life-span of a central heating installation therefore, the expansion tank has to be replaced a nùmber ; of times because the membrane has developed a leak.
In another embodiment such a device forms a tube in a piping system in which flows of liquid under pressure are again used. In such a system the tubes can for instance be 2~7~79 WO96/01~75 ; PCT~sS/00233 connected to other tubes or flow control elements, such as valves, taps and vents.
A known phenomenon in piping systems comprising valves, taps or vents is the so-called water shock. This 5 phenomenon involves a shock wave moving through the liquid, and therefore through the system, when a valve, tap or vent is abruptly closed or opened.
A drawback hereof is that it results in a loud noise.
Another drawback is that disturbances can be caused in any lO measuring or control equipment present in the system as a result of the water shock. The structural reliability of the system can also be adversely affected if the water shock occurs regularly over a period of time.
In order to obviate the above stated drawbacks, a 15 device is provided according to the invention which is distinguished by at least one elastic compressible body in the container.
With increasing pressure of the liquid for accumulating or guiding, the volume of the body decreases 20 so that the free volume available for the liquid increases. As the pressure decreases the body again expands.
In a preferred embodiment of the invention the container forms a heat exchanger, for example a convector 25 in a heating installation or a condenser in a cooling installation. When a heat exchanger with the properties of a device according to the invention is incorporated in such a system, it fulfills the function of the accumulator or expansion tank, thus doing away with the need for a 30 separate accumulator or expansion tank. This provides a particular advantage with regard to the cost and complexity of the system.
The body is preferably manufactured from a foam material with a closed cell structure. Materials suitable 35 for application in the invention are polyethylene foam, ethylene-vinyl-acetate foam and foamed silicone rubber and the like. The choice of the material depends inter alia on the operating temperature, the compatibility with the {
217077~
WO96/01375 PcT~n95100233 lic~uid for accumulating and the maximum pressure occurring.
The invention will be further elucidated in the following description with reference to the annexed 5 figures.
., Figure l shows in partly broken away perspective view a device according to the invention embodied as expansion tank in a heating installation.
Figure 2 shows a diagram of a central heating system in which is incorporated the expansion tank shown in figure l.
Fi~ure 3 shows the graph of the expansion of CH water plotted against the temperature.
Figure 4 shows a partly broken away perspective view of a device according to the invention, which is embodied as heating convector.
Fi~ure 5 shows schematically an example of a hydraulic device in which a device according to the 20 invention is applied.
The accumulator l shown in figure l is intended to function as expansion tank in a CH installation. The device l consists of tank 2 which encloses a space 3. By 25 means of a connection 4 CH water can flow via the inlet/outlet 5 into this space 3 and then out again therefrom.
In the preferred embodiment of the invention shown here the body is formed by a block of foam material 6 with 30 a closecl cell structure, which block of foam material 6 is receivecl in space 3 and fixed to the inlet/outlet 5, wherein the block of foam material 6 hangs in the space 3 so that in the embodiment shown here the inlet/outlet 5 forms the fixing means for the block of foam material 6.
35 This foam material 6 is for example polyethylene foam with a closed cell structure. Because the foam material 6 has a closed cell structure, it does not absorb any significant amount of water, so that it remains ope~ational as 2~77~
WO96/01375 PcT~ns5loo233 expansion body for a long period. The foam material 6 has a structure, in particular a cell size, such that it can be compressed well with the occurring pressures.
~ igure 2 shows schematically a CH installation 10 with a heating boiler 11, to which a piping system 13 is connected. The CH water is pumped round the piping system 13 by means of a pump 12. A plurality of heating convectors 14 is incorporated in the piping system in the usual manner.
If the accumulator 1 is arranged at or close to the highest point of the installation 10, the pressure of the CH water at this location will vary between a minimum of 0.5 bar and a maximum of 3 bar. With placing at a lower level these pressures are higher, corresponding with the height of the water column above the expansion tank.
As shown in figure 3, the water expands by about 3%
with an increase in temperature from 10 to 80-C. The accumulator must therefore have a capacity which is at least equal to 3% of the volume of the CH system. If it is further given that, as described above, the minimum pressure amounts to about 0.5 bar and the maximum pressure amounts to 3 bar, the desired elasticity and the desired volume of the foam material are simple to calculate.
As figure 4 shows, the accumulator according to the invention can be embodied in favourable manner as heating convector. A separate expansion tank can then be dispensed with. The convector 20 of figure 4 comprises in the usual manner a feed connection 21 which is connected to a feed pipe via a tap 22, and a drain connection 23. Defined in the convector 20 is a space 24 through which the heating water flows. A body formed from a quantity of foam material 25 with a closed cell structure is received in this space.
By embodying the accumulator according to the invention in this manner, it becomes possible to arrange a very large volume of foam material in the system in simple manner. The requirement of the smallest possible volume, which must be met by a separate expansion tank, is hereby ~ WO96/0137~ 2 1 7 0 7 7 ~ PcT~ns5loo233 no longer of any importance. The foam material can in that case be optimized in respect of other requirements, such as cost price.
Depending on the choice of the foam material, the 5 device according to the invention can operate at a diversity of pressures. The device according to the invention can thus also be applied as accumulator 36 in a hydraulic system 30 as shown schematically in figure 5. In this hydraulic system 30 a pump 32 carries hydraulic oil lO under pressure out of a reservoir 3l. The oil under pressure is stored in the accumulator 36 according to the invention. The maximum pressure is limited using a pressure-relief valve 35. By operating a valve 34 a hydraulic motor 33 can be fed uniformly with oil under 15 pressure.
This hydraulic system is only given as an indication.
In any installation operating with liquid under pressure, wherein it is desired to store this liquid under pressure, an accumulator can be used which forms an accumulator 20 according to the invention with the said advantages.
It is self-evident that the invention is not limited to the above described embodiments.
In the above described embodiments of the invention the container comprises one body placed in the interior 25 thereof which is manufactured from foam material with a closed cell structure and occupies a large part of the available volume in the container. It is however also possible for a large number of smaller elements to be placed in the container. In this latter case the device 30 comprises enclosing means for the elements in order to prevent these elements falling into the liquid system.
These enclosing means can be formed by a partition between the space in the tank and the outlet through which the liquid can flow unobstructed.
In an embodiment (not shown) of a device according to the invention the container comprises one or more than one body, wherein the or each body is placed in an elastically expandable shell closed off from the li~uid as embodiment 217077~
WO96/0137S pcT~s5loo233 ~
of the enclosing means, which shell is fixed to the inner wall of the container. In this case it is not required that the or each elastically compressible body be manufactured from foam material with a closed cell 5 structure, whereby a larger number of materials are suitable for use.
When such a shell forms a tensioned partition in the container, this fulfills the function of membrane, such as in known expansion tanks, wherein the or each body lO provides the necessary counter-pressure as a result of the elastic compressibility thereof. Also in this case the or each body does not have to be made from a foam material with a closed cell structure, provided the membrane is water-tight.
The body can be arranged in the container in pre-compressed state. In this case the compression of the body begins above a determined minimum pressure corresponding to the degree of pre-compression.
When a device according to the invention is applied 20 in the embodiment of a tube through which liquid flows and which is incorporated in a system with flow control elements, the body is preferably placed close to a connection to such a flow control element or to another element in the tube to damp water shock. The body herein 25 preferably forms a layer which is fixed to the inner wall of the tube, which covers the inner surface wholly or partially in radial direction at that location and which extends from the connection in axial direction over a distance which is at most equal to the length of the tube.
30 When such a layer extends in axial and radial direction over the entire inner surface of the tube, it is suitable to serve as thermal insulation, in addition to the use as insulation against shock waves manifesting themselves for instance as water shock.
Alternatively or additionally, a body can have an elongate form and be arranged in floating suspension in the flow to the inside wall of the tube.
The invention relates to a device for accumulating or 10 guiding a liquid under varying pressure, which comprises a container connected to an inlet and an outlet.
In a first embodiment such a device forms an accumulator, or expansion tank, which is generally applied in systems in which flows of liquid under pressure are 15 used. Examples hereof are hydraulic installations and cooling and heating installations. Such an accumulator is used in these cases as storage container for the liquid under pressure or to damp pressure peaks.
In a normal central heating device the accumulator is 20 used to absorb the volume changes in the heating water as resulting from variations in temperature of that water. In - cooling installations the expansion tank likewise functions to absorb the volume changes in the cooling medium resulting from variations in the temperature of 25 that medium.
Pressure accumulators are usually embodied with a flexible membrane which closes off on one side a space in which the liquid can be absorbed and on the other side is loaded with spring or gas pressure.
It is known that the life-span of usual accumulators, particularly of the membrane thereof, is limited. During the total life-span of a central heating installation therefore, the expansion tank has to be replaced a nùmber ; of times because the membrane has developed a leak.
In another embodiment such a device forms a tube in a piping system in which flows of liquid under pressure are again used. In such a system the tubes can for instance be 2~7~79 WO96/01~75 ; PCT~sS/00233 connected to other tubes or flow control elements, such as valves, taps and vents.
A known phenomenon in piping systems comprising valves, taps or vents is the so-called water shock. This 5 phenomenon involves a shock wave moving through the liquid, and therefore through the system, when a valve, tap or vent is abruptly closed or opened.
A drawback hereof is that it results in a loud noise.
Another drawback is that disturbances can be caused in any lO measuring or control equipment present in the system as a result of the water shock. The structural reliability of the system can also be adversely affected if the water shock occurs regularly over a period of time.
In order to obviate the above stated drawbacks, a 15 device is provided according to the invention which is distinguished by at least one elastic compressible body in the container.
With increasing pressure of the liquid for accumulating or guiding, the volume of the body decreases 20 so that the free volume available for the liquid increases. As the pressure decreases the body again expands.
In a preferred embodiment of the invention the container forms a heat exchanger, for example a convector 25 in a heating installation or a condenser in a cooling installation. When a heat exchanger with the properties of a device according to the invention is incorporated in such a system, it fulfills the function of the accumulator or expansion tank, thus doing away with the need for a 30 separate accumulator or expansion tank. This provides a particular advantage with regard to the cost and complexity of the system.
The body is preferably manufactured from a foam material with a closed cell structure. Materials suitable 35 for application in the invention are polyethylene foam, ethylene-vinyl-acetate foam and foamed silicone rubber and the like. The choice of the material depends inter alia on the operating temperature, the compatibility with the {
217077~
WO96/01375 PcT~n95100233 lic~uid for accumulating and the maximum pressure occurring.
The invention will be further elucidated in the following description with reference to the annexed 5 figures.
., Figure l shows in partly broken away perspective view a device according to the invention embodied as expansion tank in a heating installation.
Figure 2 shows a diagram of a central heating system in which is incorporated the expansion tank shown in figure l.
Fi~ure 3 shows the graph of the expansion of CH water plotted against the temperature.
Figure 4 shows a partly broken away perspective view of a device according to the invention, which is embodied as heating convector.
Fi~ure 5 shows schematically an example of a hydraulic device in which a device according to the 20 invention is applied.
The accumulator l shown in figure l is intended to function as expansion tank in a CH installation. The device l consists of tank 2 which encloses a space 3. By 25 means of a connection 4 CH water can flow via the inlet/outlet 5 into this space 3 and then out again therefrom.
In the preferred embodiment of the invention shown here the body is formed by a block of foam material 6 with 30 a closecl cell structure, which block of foam material 6 is receivecl in space 3 and fixed to the inlet/outlet 5, wherein the block of foam material 6 hangs in the space 3 so that in the embodiment shown here the inlet/outlet 5 forms the fixing means for the block of foam material 6.
35 This foam material 6 is for example polyethylene foam with a closed cell structure. Because the foam material 6 has a closed cell structure, it does not absorb any significant amount of water, so that it remains ope~ational as 2~77~
WO96/01375 PcT~ns5loo233 expansion body for a long period. The foam material 6 has a structure, in particular a cell size, such that it can be compressed well with the occurring pressures.
~ igure 2 shows schematically a CH installation 10 with a heating boiler 11, to which a piping system 13 is connected. The CH water is pumped round the piping system 13 by means of a pump 12. A plurality of heating convectors 14 is incorporated in the piping system in the usual manner.
If the accumulator 1 is arranged at or close to the highest point of the installation 10, the pressure of the CH water at this location will vary between a minimum of 0.5 bar and a maximum of 3 bar. With placing at a lower level these pressures are higher, corresponding with the height of the water column above the expansion tank.
As shown in figure 3, the water expands by about 3%
with an increase in temperature from 10 to 80-C. The accumulator must therefore have a capacity which is at least equal to 3% of the volume of the CH system. If it is further given that, as described above, the minimum pressure amounts to about 0.5 bar and the maximum pressure amounts to 3 bar, the desired elasticity and the desired volume of the foam material are simple to calculate.
As figure 4 shows, the accumulator according to the invention can be embodied in favourable manner as heating convector. A separate expansion tank can then be dispensed with. The convector 20 of figure 4 comprises in the usual manner a feed connection 21 which is connected to a feed pipe via a tap 22, and a drain connection 23. Defined in the convector 20 is a space 24 through which the heating water flows. A body formed from a quantity of foam material 25 with a closed cell structure is received in this space.
By embodying the accumulator according to the invention in this manner, it becomes possible to arrange a very large volume of foam material in the system in simple manner. The requirement of the smallest possible volume, which must be met by a separate expansion tank, is hereby ~ WO96/0137~ 2 1 7 0 7 7 ~ PcT~ns5loo233 no longer of any importance. The foam material can in that case be optimized in respect of other requirements, such as cost price.
Depending on the choice of the foam material, the 5 device according to the invention can operate at a diversity of pressures. The device according to the invention can thus also be applied as accumulator 36 in a hydraulic system 30 as shown schematically in figure 5. In this hydraulic system 30 a pump 32 carries hydraulic oil lO under pressure out of a reservoir 3l. The oil under pressure is stored in the accumulator 36 according to the invention. The maximum pressure is limited using a pressure-relief valve 35. By operating a valve 34 a hydraulic motor 33 can be fed uniformly with oil under 15 pressure.
This hydraulic system is only given as an indication.
In any installation operating with liquid under pressure, wherein it is desired to store this liquid under pressure, an accumulator can be used which forms an accumulator 20 according to the invention with the said advantages.
It is self-evident that the invention is not limited to the above described embodiments.
In the above described embodiments of the invention the container comprises one body placed in the interior 25 thereof which is manufactured from foam material with a closed cell structure and occupies a large part of the available volume in the container. It is however also possible for a large number of smaller elements to be placed in the container. In this latter case the device 30 comprises enclosing means for the elements in order to prevent these elements falling into the liquid system.
These enclosing means can be formed by a partition between the space in the tank and the outlet through which the liquid can flow unobstructed.
In an embodiment (not shown) of a device according to the invention the container comprises one or more than one body, wherein the or each body is placed in an elastically expandable shell closed off from the li~uid as embodiment 217077~
WO96/0137S pcT~s5loo233 ~
of the enclosing means, which shell is fixed to the inner wall of the container. In this case it is not required that the or each elastically compressible body be manufactured from foam material with a closed cell 5 structure, whereby a larger number of materials are suitable for use.
When such a shell forms a tensioned partition in the container, this fulfills the function of membrane, such as in known expansion tanks, wherein the or each body lO provides the necessary counter-pressure as a result of the elastic compressibility thereof. Also in this case the or each body does not have to be made from a foam material with a closed cell structure, provided the membrane is water-tight.
The body can be arranged in the container in pre-compressed state. In this case the compression of the body begins above a determined minimum pressure corresponding to the degree of pre-compression.
When a device according to the invention is applied 20 in the embodiment of a tube through which liquid flows and which is incorporated in a system with flow control elements, the body is preferably placed close to a connection to such a flow control element or to another element in the tube to damp water shock. The body herein 25 preferably forms a layer which is fixed to the inner wall of the tube, which covers the inner surface wholly or partially in radial direction at that location and which extends from the connection in axial direction over a distance which is at most equal to the length of the tube.
30 When such a layer extends in axial and radial direction over the entire inner surface of the tube, it is suitable to serve as thermal insulation, in addition to the use as insulation against shock waves manifesting themselves for instance as water shock.
Alternatively or additionally, a body can have an elongate form and be arranged in floating suspension in the flow to the inside wall of the tube.
Claims (14)
1. Device for accumulating or guiding a liquid under varying pressure, which comprises a container connected to an inlet and an outlet, characterized by at least one elastically compressible body in the container.
2. Device as claimed in claim 1, characterized by enclosing means for enclosing the or each body in the container.
3. Device as claimed in claim 1 or 2, characterized by fixing means for fixing at least one body at a fixed position in the container.
4. Device as claimed in any of the foregoing claims, characterized in that the body is in a pre-compressed state in order to be compressible only above a threshold value of the pressure.
5. Device as claimed in any of the foregoing claims, characterized in that the body takes the form of a layer at least partially covering the inner wall of the container.
6. Device as claimed in any of the foregoing claims, characterized in that the container forms an expansion tank in a temperature control system.
7. Device as claimed in claim 6, characterized in that the expansion tank forms a heat exchanging element.
8. Device as claimed in any of the foregoing claims, characterized in that the container forms a tube in a tube assembly, wherein at least one body extending in axial direction is fixed at least close to an end of the tube.
9. Device as claimed in claim 8, characterized in that the body takes the form of a layer at least partially covering the inner surface of the tube in radial direction.
10. Device as claimed in any of the foregoing claims, characterized in that the body comprises foam material with a closed cell structure.
11. Device as claimed in claim 10, characterized in that the body contains ethylene-vinyl-acetate foam.
12. Device as claimed in claim 10 or 11, characterized in that the body contains silicone rubber.
13. Device as claimed in claim 10, 11 or 12, characterized in that the body contains polyethylene foam.
14. Tube assembly for transporting a liquid which comprises at least one tube, characterized in that the tube comprises a device as claimed in any of the claims 1 to 13.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL9401106 | 1994-07-01 | ||
| NL9401106 | 1994-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2170779A1 true CA2170779A1 (en) | 1996-01-18 |
Family
ID=19864399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2170779 Abandoned CA2170779A1 (en) | 1994-07-01 | 1995-07-03 | Device for accumulating or guiding liquid |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0716725A1 (en) |
| CA (1) | CA2170779A1 (en) |
| WO (1) | WO1996001375A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006084748A1 (en) * | 2005-02-10 | 2006-08-17 | Westphal Werner | Pressure tank |
| GB2566094B (en) * | 2017-09-04 | 2021-07-14 | Ideal Boilers Ltd | Expansion vessel incorporating a foam core |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1197524A (en) * | 1968-03-25 | 1970-07-08 | Automotive Prod Co Ltd | Improvements in or relating to Liquid Pressure Storage Devices |
| DE1963709A1 (en) * | 1969-12-19 | 1971-07-15 | Rheinische Metallwerk Gmbh Arm | Device for preventing or reducing pressure surges in pipeline networks |
| DE3302448A1 (en) * | 1983-01-26 | 1984-07-26 | Karlheinz 5800 Hagen Menkhoff | Elastomer hydraulic accumulator |
| DE3333597A1 (en) * | 1983-09-16 | 1985-04-18 | Wilkhahn Wilkening + Hahne GmbH + Co, 3252 Bad Münder | Accumulator |
| US4651781A (en) * | 1984-02-02 | 1987-03-24 | Northrop Corporation | Distributed accumulator |
-
1995
- 1995-07-03 WO PCT/NL1995/000233 patent/WO1996001375A1/en not_active Application Discontinuation
- 1995-07-03 EP EP95923590A patent/EP0716725A1/en not_active Withdrawn
- 1995-07-03 CA CA 2170779 patent/CA2170779A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP0716725A1 (en) | 1996-06-19 |
| WO1996001375A1 (en) | 1996-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2695753A (en) | Hot-water heating system | |
| CA2190824C (en) | Flexible insert for heat pipe freeze protection | |
| CN102057232B (en) | Hot water heater | |
| US5551590A (en) | Non-metallic pressure vessel fitting | |
| US10247347B2 (en) | Multi-layered gas-filled bladder for accommodating changes in fluid characteristics within a fluid delivery system | |
| US9777880B2 (en) | Pressure absorber for a fluid system and method of use | |
| GB2042158A (en) | Thermally insulated heat accumulator | |
| WO2012082042A1 (en) | A water heater | |
| CA2170779A1 (en) | Device for accumulating or guiding liquid | |
| US3880193A (en) | Surge absorber for cryogenic fluids | |
| US20070186873A1 (en) | Pressure control isolation and flood preventative tank for a hot water based heating system | |
| RU2158882C2 (en) | Method of control of expansion in closed liquid circulating system and closed liquid circulating system for realization of this method | |
| CA2993308C (en) | Multi-layered gas-filled bladder for accommodating changes in fluid characteristics within a fluid delivery system | |
| US5097862A (en) | Accumulator with a valve connected float | |
| US2697450A (en) | Alleviator | |
| WO2003002915A1 (en) | Arrangement in a heating or cooling system | |
| FI69672B (en) | DISTRIBUTIONSSYSTEM FOER BRUKSVATTEN | |
| CN219346853U (en) | Water side rust-proof flat expansion tank | |
| GB2103716A (en) | Hydraulic accumulator | |
| WO2004014763A1 (en) | Apparatus for absorbing a volume expansive force of a liquid | |
| KR200351948Y1 (en) | Apparatus for absorbing a volume expansive force of a liquid | |
| WO2021146686A1 (en) | Reactive fluid system accounting for thermal expansion in replacement of nitrogen within charged pulsation control equipment | |
| CA2227368A1 (en) | Expansion bladder for hot water tank | |
| SU1377468A1 (en) | General service pumping plant | |
| CA2190025A1 (en) | Apparatus for stabilizing pressure of a fluid flowing through a pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |