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WO2024196243A1 - An apparatus for increasing the pressure of a fluid - Google Patents

An apparatus for increasing the pressure of a fluid Download PDF

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Publication number
WO2024196243A1
WO2024196243A1 PCT/MY2023/050017 MY2023050017W WO2024196243A1 WO 2024196243 A1 WO2024196243 A1 WO 2024196243A1 MY 2023050017 W MY2023050017 W MY 2023050017W WO 2024196243 A1 WO2024196243 A1 WO 2024196243A1
Authority
WO
WIPO (PCT)
Prior art keywords
slave
fluid
pressure
piston
temperature
Prior art date
Application number
PCT/MY2023/050017
Other languages
French (fr)
Inventor
Teng Hoe KU
Original Assignee
Dms Biodegradable Sdn. Bhd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dms Biodegradable Sdn. Bhd. filed Critical Dms Biodegradable Sdn. Bhd.
Priority to PCT/MY2023/050017 priority Critical patent/WO2024196243A1/en
Publication of WO2024196243A1 publication Critical patent/WO2024196243A1/en

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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
    • F04B9/111—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members
    • F04B9/113—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members reciprocating movement of the pumping members being obtained by a double-acting liquid motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K19/00—Regenerating or otherwise treating steam exhausted from steam engine plant
    • F01K19/02—Regenerating by compression
    • F01K19/04—Regenerating by compression in combination with cooling or heating
    • 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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/008—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being a fluid transmission link
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
    • F04B9/105—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting liquid motor
    • 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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/003—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors with multiple outputs
    • 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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/06—Details
    • F15B7/08—Input units; Master units
    • 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
    • F04B2203/00—Motor parameters
    • F04B2203/09—Motor parameters of linear hydraulic motors
    • 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
    • F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids

Definitions

  • the present invention relates generally to an apparatus for increasing the pressure of a fluid, and more specifically to one for increasing the pressure of steam.
  • a fluid such as steam is required for use at a higher pressure to that at which it is available.
  • the steam produced by the boiler feeding the incinerator is typically at a pressure of around 15 bar, whereas a pressure of higher than 25 bar is more optimal for the processing of certain types of waste.
  • Steam pressurizers that are known in the art are indeed able to increase the pressure of the steam by the amount required, but they do that along with a natural increase in the temperature of the steam. It is known that increasing the pressure of a fluid typically causes its temperature to also increase. In some uses of steam, such as in waste processing, it is desirable to have the steam at a high pressure but at a lower temperature than what it would be at given the natural increase in heat during pressurization.
  • the present invention seeks to overcome the above disadvantages by providing an apparatus that increases the pressure of a fluid such as steam by compressing quantities of the fluid in batches using a plurality of reciprocating pistons, and simultaneously removing any heat caused by the increase in pressure so that the overall temperature of the fluid remains the same or lower to what it was before the increase in pressure.
  • a fluid such as steam
  • the novelty and inventiveness of this invention lies with the specific nature of the apparatus of this invention that can increase the pressure of a quantity of fluid while maintaining or even lowering its temperature.
  • This invention thus relates to an apparatus for increasing the pressure of a fluid, comprising: a reciprocating master piston; a slave piston reciprocally mounted within a slave cylinder and connected mechanically to an end of the master piston such that an axial movement of the master piston translates to an axial movement of the slave piston, the slave cylinder providing a volume, within which volume the said quantity of fluid can be pressurized by the said axial movement of the slave piston from a proximal position to a distal position of the slave piston within the slave cylinder, whereby the quantity of fluid in the volume with the slave piston at the proximal position being at a first pressure P 1 and a first temperature T 1 , and said quantity of fluid in the volume with the slave piston at the distal position being at a second pressure P 2 and a second temperature T 2 , where P 2 is higher than P 1 and T 2 is lower or the same as T 1 .
  • the temperature T 2 being lower than or the same as T 1 is due to heat dissipation via the slave cylinder surface to an ambient environment.
  • the temperature T 2 being lower than T 1 is due to heat dissipation via the slave cylinder surface to a coolant, said coolant comprising water at a temperature of between 10°C and 24°C, and said coolant immersing at least a portion of the said slave cylinder surface.
  • the temperature T 2 being lower than T 1 is due to heat dissipation via the slave cylinder surface to a coolant, said coolant comprising propylene glycol at a temperature of between -21°C and 5°C, and said coolant immersing at least a portion of the said slave cylinder surface.
  • the dissipation of heat via the slave cylinders during each compression stroke of the respective slave pistons is controlled by the temperature of the coolant used.
  • the temperature T 2 of the fluid that is achieved can thus be controlled by adjusting the temperature of the coolant used, depending on the requirements of the particular use of the fluid.
  • the coolant recirculates through a chiller or other heat exchange device, which keeps the coolant at a desired temperature.
  • the master piston is driven by a hydraulic system, which causes it to reciprocate in a cyclic fashion.
  • a second set of slave piston, slave cylinder and slave volume which are instead connected to an opposite end of the master piston in a mirrored fashion, but identical in other respects, to the first described above, so that each stroke of the reciprocating master piston pushes one set and pulls the other, in a cyclic fashion, and so a high level of efficiency is achieved in the pressurization of the fluid.
  • This invention thus provides an elegant solution to the problem of elevated temperatures in a fluid after it has been pressurized.
  • Another advantage of this invention is the efficiency produced by the usage of each stroke of the master piston.
  • FIG. 1 shows a front cross-sectional view of an apparatus in a first state in an embodiment of the present invention.
  • FIG. 1 shows an isometric view of an apparatus in a first state in an embodiment of the present invention.
  • FIG. 1 shows a front cross-sectional view of an apparatus in a second state in an embodiment of the present invention.
  • the novelty and inventiveness of this invention lies with the specific nature of the apparatus of this invention that is able to increase the pressure of a quantity of fluid while maintaining or even lowering its temperature.
  • a reciprocating master piston (10) is provided inside a master cylinder (12).
  • Two openings, a first opening (14) and a second opening (16) are provided on the master cylinder (12), one each on each side of the master piston (10).
  • These openings (14, 16) are connected to a hydraulic machine, and allow for pressurized hydraulic fluid to enter into and exit out of the master cylinder (12) on each side of the master piston (10) in a controlled manner such that the master cylinder (10) can be powered along its axial stroke in a reciprocating fashion.
  • the master piston (10) is provided with a connecting rod (18) extending from both of its sides.
  • the connecting rod (18) at a first end (181) is fixed to a center of a rectangular first plate (182), which in turn is connected at each of its corners to a total of four first slave rods (21). Each of these slave rods (21) is then connected to a first slave piston (20).
  • Each first slave piston (20) is contained within a first slave cylinder (22).
  • Each first slave cylinder (22) forms a first slave volume (24) with its first slave piston (20). It is in these volumes (24) that the quantity of fluid is pressurized.
  • Each first slave cylinder (22) is in fluid communication with a first pipe (25), which runs between a first ingress valve (26) and a first exhaust valve (28).
  • the pipe extending beyond the first ingress valve (26) is in fluid communication with a boiler or other equipment that heats and pressurizes a fluid, like steam, above ambient.
  • the pipe extending beyond the first exhaust valve (28) dispenses the fluid to its intended use.
  • each of these slave rods (31) is then connected to a second slave piston (30).
  • Each second slave piston (30) is contained within a second slave cylinder (32).
  • Each second slave cylinder (32) forms a volume (34) with its second slave piston (30). It is in these volumes (34) that the quantity of fluid is pressurized.
  • Each second slave cylinder (32) is in fluid communication with a second pipe (35), which runs between a second ingress valve (36) and a second exhaust valve (38).
  • the pipe extending beyond the second ingress valve (36) is in fluid communication with a boiler or other equipment that heats and pressurizes a fluid, like steam, above ambient.
  • the pipe extending beyond the second exhaust valve (38) dispenses the fluid to its intended use.
  • Figures 1 and 2 show the apparatus in a first state, that is when the master piston (10) is at its rightmost position.
  • the first slave pistons (20) are at the proximal ends of their strokes
  • the second slave pistons (30) are at the distal ends of their strokes.
  • the first slave pistons (20) have just pulled into said cylinders (22), and thus first slave volume (24), a quantity of fluid from the first pipe (25), with the first ingress valve (26) open and the first exhaust valve (28) closed.
  • the pressure P 1 and temperature T 1 of the quantity of fluid within the first slave volume (24) is roughly the same as when the fluid left the boilers, which is typically around 10 bar and 180°C.
  • This compression also increases the heat density within the first slave volumes (24), but this heat is dissipated via the surfaces of the first slave cylinders (22), which are in contact with a coolant (40).
  • This coolant is either water at a temperature of between 10°C and 24°C, or propylene glycol at a temperature of between -21°C and 5°C. The coolant immerses the slave cylinder surface and in this way absorbs heat from the slave cylinder, thus lowering the temperature of the fluid within.
  • the temperature T 2 of the quantity of fluid within the first slave volume (24) after compression is the same as or less than it was before the compression. In other words, T 2 is the same as or less than T 1 , or less than 150°C.
  • the second slave cylinders (32) and pistons (30) operate in the same way, in a mirrored fashion. In this way, each stroke of the master piston (10) pushes one set of slave pistons and pulls on the other, and so a high level of efficiency is achieved in the pressurization of the fluid.
  • the dissipation of heat via the slave cylinders (22, 32) during each compression stroke of the respective slave pistons (20, 30) is controlled by the temperature of the coolant (40).
  • the temperature T 2 of the fluid that is achieved can thus be controlled by adjusting the temperature of the coolant used.
  • the temperature T 2 of the fluid that is achieved can thus be controlled by adjusting the temperature of the coolant used, depending on the requirements of the particular use of the fluid.
  • the coolant ideally recirculates through a chiller, which keeps the coolant at a desired temperature.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

An apparatus that increases the pressure of a fluid such as steam by compressing quantities of the fluid in batches using a plurality of reciprocating pistons, and simultaneously removing any heat caused by the increase in pressure so that the overall temperature of the fluid remains the same or lower to what it was before the increase in pressure.

Description

An Apparatus For Increasing The Pressure Of A Fluid
The present invention relates generally to an apparatus for increasing the pressure of a fluid, and more specifically to one for increasing the pressure of steam.
There are many instances where a fluid such as steam is required for use at a higher pressure to that at which it is available. For example, in a steam incinerator used to process waste, the steam produced by the boiler feeding the incinerator is typically at a pressure of around 15 bar, whereas a pressure of higher than 25 bar is more optimal for the processing of certain types of waste.
Steam pressurizers that are known in the art are indeed able to increase the pressure of the steam by the amount required, but they do that along with a natural increase in the temperature of the steam. It is known that increasing the pressure of a fluid typically causes its temperature to also increase. In some uses of steam, such as in waste processing, it is desirable to have the steam at a high pressure but at a lower temperature than what it would be at given the natural increase in heat during pressurization.
What is needed in the art is an apparatus that can increase the pressure of steam and other fluids without a concomitant increase in its temperature.
The present invention seeks to overcome the above disadvantages by providing an apparatus that increases the pressure of a fluid such as steam by compressing quantities of the fluid in batches using a plurality of reciprocating pistons, and simultaneously removing any heat caused by the increase in pressure so that the overall temperature of the fluid remains the same or lower to what it was before the increase in pressure.
The novelty and inventiveness of this invention lies with the specific nature of the apparatus of this invention that can increase the pressure of a quantity of fluid while maintaining or even lowering its temperature.
This invention thus relates to an apparatus for increasing the pressure of a fluid, comprising: a reciprocating master piston; a slave piston reciprocally mounted within a slave cylinder and connected mechanically to an end of the master piston such that an axial movement of the master piston translates to an axial movement of the slave piston, the slave cylinder providing a volume, within which volume the said quantity of fluid can be pressurized by the said axial movement of the slave piston from a proximal position to a distal position of the slave piston within the slave cylinder, whereby the quantity of fluid in the volume with the slave piston at the proximal position being at a first pressure P1 and a first temperature T1, and said quantity of fluid in the volume with the slave piston at the distal position being at a second pressure P2 and a second temperature T2, where P2 is higher than P1 and T2 is lower or the same as T1.
In a preferred embodiment, the temperature T2 being lower than or the same as T1 is due to heat dissipation via the slave cylinder surface to an ambient environment.
In another preferred embodiment, the temperature T2 being lower than T1 is due to heat dissipation via the slave cylinder surface to a coolant, said coolant comprising water at a temperature of between 10°C and 24°C, and said coolant immersing at least a portion of the said slave cylinder surface.
In yet another preferred embodiment, the temperature T2 being lower than T1 is due to heat dissipation via the slave cylinder surface to a coolant, said coolant comprising propylene glycol at a temperature of between -21°C and 5°C, and said coolant immersing at least a portion of the said slave cylinder surface.
The dissipation of heat via the slave cylinders during each compression stroke of the respective slave pistons is controlled by the temperature of the coolant used. The temperature T2 of the fluid that is achieved can thus be controlled by adjusting the temperature of the coolant used, depending on the requirements of the particular use of the fluid. The coolant recirculates through a chiller or other heat exchange device, which keeps the coolant at a desired temperature.
The master piston is driven by a hydraulic system, which causes it to reciprocate in a cyclic fashion. A second set of slave piston, slave cylinder and slave volume, which are instead connected to an opposite end of the master piston in a mirrored fashion, but identical in other respects, to the first described above, so that each stroke of the reciprocating master piston pushes one set and pulls the other, in a cyclic fashion, and so a high level of efficiency is achieved in the pressurization of the fluid.
This invention thus provides an elegant solution to the problem of elevated temperatures in a fluid after it has been pressurized.
Another advantage of this invention is the efficiency produced by the usage of each stroke of the master piston.
Other objects and advantages will be more fully apparent from the following disclosure and appended claims.
Increasing the pressure of a fluid also increases its temperature.
Current pressure increasing devices for a fluid provides the fluid at too high a temperature.
Cool down the fluid as it is compressed.
shows a front cross-sectional view of an apparatus in a first state in an embodiment of the present invention.
shows an isometric view of an apparatus in a first state in an embodiment of the present invention.
shows a front cross-sectional view of an apparatus in a second state in an embodiment of the present invention.
It should be noted that the following detailed description is directed to an apparatus for increasing the pressure of a fluid such as steam, and is not limited to any particular size or configuration but in fact a multitude of sizes and configurations within the general scope of the following description.
The novelty and inventiveness of this invention lies with the specific nature of the apparatus of this invention that is able to increase the pressure of a quantity of fluid while maintaining or even lowering its temperature.
Referring to Figures 1 and 2, there can be seen different views of an apparatus of this invention in a first state. A reciprocating master piston (10) is provided inside a master cylinder (12). Two openings, a first opening (14) and a second opening (16) are provided on the master cylinder (12), one each on each side of the master piston (10). These openings (14, 16) are connected to a hydraulic machine, and allow for pressurized hydraulic fluid to enter into and exit out of the master cylinder (12) on each side of the master piston (10) in a controlled manner such that the master cylinder (10) can be powered along its axial stroke in a reciprocating fashion. The master piston (10) is provided with a connecting rod (18) extending from both of its sides.
The connecting rod (18) at a first end (181) is fixed to a center of a rectangular first plate (182), which in turn is connected at each of its corners to a total of four first slave rods (21). Each of these slave rods (21) is then connected to a first slave piston (20). Each first slave piston (20) is contained within a first slave cylinder (22). Each first slave cylinder (22) forms a first slave volume (24) with its first slave piston (20). It is in these volumes (24) that the quantity of fluid is pressurized. Each first slave cylinder (22) is in fluid communication with a first pipe (25), which runs between a first ingress valve (26) and a first exhaust valve (28). The pipe extending beyond the first ingress valve (26) is in fluid communication with a boiler or other equipment that heats and pressurizes a fluid, like steam, above ambient. The pipe extending beyond the first exhaust valve (28) dispenses the fluid to its intended use.
In a mirrored fashion, the connecting rod (18) at a second end (183) is fixed to a center of a rectangular second plate (184), which in turn is connected at each of its corners to a total of four second slave rods (31). Each of these slave rods (31) is then connected to a second slave piston (30). Each second slave piston (30) is contained within a second slave cylinder (32). Each second slave cylinder (32) forms a volume (34) with its second slave piston (30). It is in these volumes (34) that the quantity of fluid is pressurized. Each second slave cylinder (32) is in fluid communication with a second pipe (35), which runs between a second ingress valve (36) and a second exhaust valve (38). The pipe extending beyond the second ingress valve (36) is in fluid communication with a boiler or other equipment that heats and pressurizes a fluid, like steam, above ambient. The pipe extending beyond the second exhaust valve (38) dispenses the fluid to its intended use.
Figures 1 and 2 show the apparatus in a first state, that is when the master piston (10) is at its rightmost position. In this first state, the first slave pistons (20) are at the proximal ends of their strokes, and the second slave pistons (30) are at the distal ends of their strokes. Looking at the first slave cylinders (22), the first slave pistons (20) have just pulled into said cylinders (22), and thus first slave volume (24), a quantity of fluid from the first pipe (25), with the first ingress valve (26) open and the first exhaust valve (28) closed. The pressure P1 and temperature T1 of the quantity of fluid within the first slave volume (24) is roughly the same as when the fluid left the boilers, which is typically around 10 bar and 180°C. Once the first slave pistons (20) have reached the proximal ends of their strokes as shown in , the first ingress valve (26) closes, and the first exhaust valve (28) remains closed, locking in the quantity of fluid within the first slave volume (24).
What happens next is shown in , which shows the apparatus in a second state, that is when the master piston (10) is at its leftmost position. To get from the state shown in to the state shown in , the second opening (16) on the master cylinder (12) ingresses pressurized hydraulic fluid into the master cylinder (12), which causes the master piston (10) to move to its leftmost position. This causes the first slave pistons (20) to move to their distal positions, and in doing so, they compress the quantity of fluid contained within the first slave volumes (24) in each first slave cylinder (22). The pressure of the quantity of fluid in the first slave volumes (24) increases to a pressure P2 of roughly 25 bars or more due to this compression. This compression also increases the heat density within the first slave volumes (24), but this heat is dissipated via the surfaces of the first slave cylinders (22), which are in contact with a coolant (40). This coolant is either water at a temperature of between 10°C and 24°C, or propylene glycol at a temperature of between -21°C and 5°C. The coolant immerses the slave cylinder surface and in this way absorbs heat from the slave cylinder, thus lowering the temperature of the fluid within.
In this way, the temperature T2 of the quantity of fluid within the first slave volume (24) after compression is the same as or less than it was before the compression. In other words, T2 is the same as or less than T1, or less than 150°C. Once the first slave pistons (20) have reached the distal ends of their strokes as shown in , the first exhaust valve (28) opens, and the first ingress valve (26) remains closed, thus releasing the quantity of fluid through the first exhaust valve (28) for further use.
The second slave cylinders (32) and pistons (30) operate in the same way, in a mirrored fashion. In this way, each stroke of the master piston (10) pushes one set of slave pistons and pulls on the other, and so a high level of efficiency is achieved in the pressurization of the fluid.
The dissipation of heat via the slave cylinders (22, 32) during each compression stroke of the respective slave pistons (20, 30) is controlled by the temperature of the coolant (40). The temperature T2 of the fluid that is achieved can thus be controlled by adjusting the temperature of the coolant used. The temperature T2 of the fluid that is achieved can thus be controlled by adjusting the temperature of the coolant used, depending on the requirements of the particular use of the fluid. The coolant ideally recirculates through a chiller, which keeps the coolant at a desired temperature.
While several particularly preferred embodiments of the present invention have been described and illustrated, it should now be apparent to those skilled in the art that various changes and modifications can be made without departing from the scope of the invention. Accordingly, the following claims are intended to embrace such changes, modifications, and areas of application that are within the scope of this invention.
Master piston (10)
Master Cylinder (12)
Master cylinder first opening (14)
Master cylinder second opening (16)
Connecting rod (18)
Connecting rod first end (181)
First plate (182)
Connecting rod second end (183)
Second plate (184)
Hydraulic machine (19)
First slave piston (20)
First slave rod (21)
First slave cylinder (22)
First slave volume (24)
First pipe (25)
First ingress valve (26)
First exhaust valve (28)
Second slave piston (30)
Second slave rod (31)
Second slave cylinder (32)
Second slave volume (34)
Second pipe (35)
Second ingress valve (36)
Second exhaust valve (38)
Coolant (40)

Claims (7)

  1. An apparatus for increasing the pressure of a fluid, comprising:
    a reciprocating master piston (10);
    a slave piston (20) reciprocally mounted within a slave cylinder (22) and connected to an end of the master piston (10) such that an axial movement of the master piston (10) translates to an axial movement of the slave piston (20), the slave cylinder (22) providing a volume (24), within which volume the said quantity of fluid can be pressurized by the said axial movement of the slave piston (20) from a proximal position to a distal position of the slave piston (20) within the slave cylinder (22)
    whereby the quantity of fluid in the volume (24) with the slave piston (20) at the proximal position being at a first pressure P1 and a first temperature T1, and said quantity of fluid in the volume (24) with the slave piston (20) at the distal position being at a second pressure P2 and a second temperature T2, where P2 is higher than P1 and T2 is lower or the same as T1.
  2. An apparatus for increasing the pressure of a fluid according to Claim 1, wherein the temperature T2 being lower than T1 is due to heat dissipation via the slave cylinder (22) surface to an ambient environment.
  3. An apparatus for increasing the pressure of a fluid according to Claim 1, wherein the temperature T2 being lower than T1 is due to heat dissipation via the slave cylinder (22) surface to a coolant (40), said coolant immersing at least a portion of the said slave cylinder surface.
  4. An apparatus for increasing the pressure of a fluid according to Claim 3, wherein the coolant (40) is water at a temperature of between 10°C and 24°C.
  5. An apparatus for increasing the pressure of a fluid according to Claim 3, wherein the coolant (40) is propylene glycol at a temperature of between -21°C and 5°C.
  6. An apparatus for increasing the pressure of a fluid according to Claim 1, wherein the master piston (10) is driven by a hydraulic system, which causes it to reciprocate in a cyclic fashion.
  7. An apparatus for increasing the pressure of a fluid according to Claim 6, further comprising a second set of slave piston (30), slave cylinder (32) and slave volume (34), which are instead connected to an opposite end of the master piston (10) in a mirrored fashion, but identical in other respects, to the first, so that each stroke of the reciprocating master piston (10) pushes one set and pulls the other, in a cyclic fashion.
PCT/MY2023/050017 2023-03-21 2023-03-21 An apparatus for increasing the pressure of a fluid WO2024196243A1 (en)

Priority Applications (1)

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PCT/MY2023/050017 WO2024196243A1 (en) 2023-03-21 2023-03-21 An apparatus for increasing the pressure of a fluid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/MY2023/050017 WO2024196243A1 (en) 2023-03-21 2023-03-21 An apparatus for increasing the pressure of a fluid

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4334833A (en) * 1980-10-28 1982-06-15 Antonio Gozzi Four-stage gas compressor
EP0064481A1 (en) * 1981-04-30 1982-11-10 SAFE S.r.l. A reciprocating, hydraulically operated, positive displacement compressor
US4761118A (en) * 1985-02-22 1988-08-02 Franco Zanarini Positive displacement hydraulic-drive reciprocating compressor
US6062828A (en) * 1998-06-04 2000-05-16 Raytheon Company Compressor for liquefied gas applications
US6077053A (en) * 1997-04-10 2000-06-20 Kabushiki Kaisha Kobe Seiko Sho Piston type gas compressor
US20200040882A1 (en) * 2016-10-07 2020-02-06 Metener Oy Gas intensifier with lubrication
CN111140459A (en) * 2019-12-27 2020-05-12 江苏万川液压机械设备有限公司 Double-cylinder single-feeding hydraulic piston pump

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4334833A (en) * 1980-10-28 1982-06-15 Antonio Gozzi Four-stage gas compressor
EP0064481A1 (en) * 1981-04-30 1982-11-10 SAFE S.r.l. A reciprocating, hydraulically operated, positive displacement compressor
US4761118A (en) * 1985-02-22 1988-08-02 Franco Zanarini Positive displacement hydraulic-drive reciprocating compressor
US6077053A (en) * 1997-04-10 2000-06-20 Kabushiki Kaisha Kobe Seiko Sho Piston type gas compressor
US6062828A (en) * 1998-06-04 2000-05-16 Raytheon Company Compressor for liquefied gas applications
US20200040882A1 (en) * 2016-10-07 2020-02-06 Metener Oy Gas intensifier with lubrication
CN111140459A (en) * 2019-12-27 2020-05-12 江苏万川液压机械设备有限公司 Double-cylinder single-feeding hydraulic piston pump

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