CN109154286A - Device and method for compression fluid - Google Patents
Device and method for compression fluid Download PDFInfo
- Publication number
- CN109154286A CN109154286A CN201780020544.6A CN201780020544A CN109154286A CN 109154286 A CN109154286 A CN 109154286A CN 201780020544 A CN201780020544 A CN 201780020544A CN 109154286 A CN109154286 A CN 109154286A
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Classifications
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- 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
- F04B25/00—Multi-stage pumps
- F04B25/005—Multi-stage pumps with two cylinders
-
- 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
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/18—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use for specific elastic fluids
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
- F04B39/0011—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons liquid pistons
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- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
- F04B39/0016—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons with valve arranged in the piston
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- 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
- 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
- F04B53/142—Intermediate liquid-piston between a driving piston and a driven piston
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- 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
- F04B9/107—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 rectilinear movement of the pumping member in the working direction being obtained by a single-acting liquid motor, e.g. actuated in the other direction by gravity or a spring
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- 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
- F04B9/107—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 rectilinear movement of the pumping member in the working direction being obtained by a single-acting liquid motor, e.g. actuated in the other direction by gravity or a spring
- F04B9/1073—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 rectilinear movement of the pumping member in the working direction being obtained by a single-acting liquid motor, e.g. actuated in the other direction by gravity or a spring with actuation in the other direction by gravity
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- 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
- F04B9/107—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 rectilinear movement of the pumping member in the working direction being obtained by a single-acting liquid motor, e.g. actuated in the other direction by gravity or a spring
- F04B9/1076—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 rectilinear movement of the pumping member in the working direction being obtained by a single-acting liquid motor, e.g. actuated in the other direction by gravity or a spring with fluid-actuated inlet or outlet valve
-
- 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
- F04B9/117—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 the pumping members not being mechanically connected to each other
- F04B9/1176—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 the pumping members not being mechanically connected to each other the movement of each piston in one direction being obtained by a single-acting piston liquid motor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
One kind includes earthen pipe (6) and the piston component (7) being slidably mounted therein for compressing the equipment of first fluid (14).Piston component (7) includes the first component (10) and second piston component (8) for defining therebetween space.Space is configured to accommodate the second fluid (16) for causing the compression of first fluid (14).Equipment (7) further includes pump (48) and second fluid supplying duct (50,38), with the space for being supplied to second fluid between first piston component and second piston component；Wherein second piston component (8) includes valve (24), is configured to control second fluid and flows into the space between piston element via second fluid supplying duct (50,38).
Description
Technical field
The present invention relates to a kind of equipment for compression fluid.Specifically, the present invention relates to compressor, and it is specific but non-
Oscillation compressor is exclusively related to, and more particularly, to hydraulic-driven compressor.The present invention relates to piston compressor or ion pressures
Contracting machine and single-stage or compound compressor.The invention mainly relates to the sealing element in this compressor, specifically axial seal,
It can be used as the execution of both shaft seal or piston seal.The present invention also extends into the side of compression fluid and especially gas
Method.
Background technique
Seals in compressor equipped with leakage release device bear all gas pressure during compression process
(being equivalent to actual gas pressure), this will inevitably cause to wear during continuous use.In addition, close in compressor
In the case that back pressure rises on sealing, the abrasion on sealing element is also due to prestressing force increases and increases.Experience is shown, in given foot
In the case where enough sizes, the service life of the seals of this stress is born in the range of 2500-3000km.
Accordingly, it is desirable to provide improved compressor design, extends the service life of sealing element.The present invention is originated from inventor
Attempt to overcome the problems, such as work associated with the prior art.
Summary of the invention
According to the first aspect of the invention, provide it is a kind of for compressing the equipment of first fluid, the equipment include compression
Machine piston comprising piston cylinder and the piston component being slidably mounted therein, wherein piston component includes limiting therebetween
The first piston component and second piston component spaced apart in space, which is configured to accommodate the pressure for causing first fluid
The second fluid of contracting, and for supplying second fluid to the dress in the space between first piston component and second piston component
It sets.
In the compressor of the prior art, the fluid seal contacted with compression fluid is exposed to and actual gas pressure phase
Deng pressure, this causes the noticeable wear on sealing element.However, on the contrary, in the apparatus of the present: invention, piston component includes two
Piston element spaced apart causes the fluid seal in compressor to be exposed to the reduced pressure of only 2bar.Therefore, equipment is led
It causes the load on fluid seal to be substantially reduced, causes to wear and be lost to reduce.Therefore, advantageously, because piston component and cylinder
The excellent lubrication generated between pipe, therefore equipment results in the extended wearing- in period of piston seal.This provides the anti-of reinforcement
Corrosion and mechanical protection for compressor pinking, and cause low noise to discharge.Further advantage includes leading to lower maintenance cost
Long service life, this cause improve equipment availability.
Preferably, equipment includes the holding vessel for being configured to for second fluid being stored therein in.Preferably, it is used for second
The device that body is supplied to the space between first piston component and second piston component includes pump, and preferably in holding vessel and work
At least one the second fluid supplying duct of the fluid extended between space between plunger member along its supply.
Preferably, first piston component (herein referred as " floating piston ") is configured to vibrate in earthen pipe, and preferably by
One radial seal and earthen pipe seal.First radial seal can be shaft seal or piston seal.Preferably, first piston
Component is substantially centrally mounted on second piston component, and is thus concentrically guided.Preferably, second piston component (this
Text is known as " main piston ") it is configured to vibrate in earthen pipe, and preferably sealed by the second radial seal and earthen pipe.Second is radial close
Sealing can be shaft seal or piston seal.
Preferably, the side of first fluid to be compressed contact first piston component, and second fluid contacts first piston
The opposite side of component.Preferably, second fluid is being arranged between the first piston component of piston component and second piston component
When be used as lubricating fluid because it is used to reduce the friction between the first radial seal and earthen pipe.Preferably, second fluid exists
It is used as driving fluid when being arranged below piston component, because it is used to that piston component to be caused to vibrate in earthen pipe, to compress
First fluid.
Preferably, be arranged in second fluid in the space between first piston component and second piston component preferably via
At least one second fluid leakage catheter fluid is connected on holding vessel.Therefore, via any the second of second seal leakage
Fluid is supplied to holding vessel.Advantageously, therefore, equipment includes to the space between first piston component and second piston component
Leakage is recycled back to streamline because during the use of compressor piston, any leakage of the second fluid at second seal by
The supplement stream of second fluid automatically balances.
Preferably, second piston component includes valve, is configured to control second fluid and supplies via at least one second fluid
It is flowed into the space between piston element to conduit.Preferably, valve includes biasing device, is configured to valve being biased into second
Closed structure in body supplying duct.Biasing device preferably includes spring, and more preferably helical spring or cupuliform spring.
Preferably, second piston component includes actuating device, the pressure change being constructed to respond in first seal,
Or carry out trigger valve relative to the position for actuating set-point in response to first piston component.Preferably, actuating device is configured to respond to
Pressure change in first seal, or start pump relative to the position for actuating set-point in response to first piston component.
Preferably, actuating device is configured to the opening valve when the pressure in first seal increases, and preferably starting is pumped second
Fluid is pumped across valve.Rather, it is preferred to ground, actuating device is configured to the closure valve when the pressure in first seal reduces, and
And deactivate pump preferably to prevent the pumping of second fluid.
For example, therefore, close since second fluid passes through second when the pressure on the first-class side of first seal
The leakage of sealing and when increasing, first piston component is preferably configured as being pushed towards second piston component, so as to cause dress is actuated
Set opening valve.
In a further advantageous embodiment, actuating device, which is configured to reach in the position of first piston component, actuates set-point
When opening valve and/or actuating device be configured to mobile in the position of first piston component be more than closure valve when actuating set-point.It will
It recognizes, actuates set-point when the position of floating piston is fallen below (this may be due to fluid loss or the compressible gas of entrainment
Body occurs) when, valve and pump can be started by actuating device.This may not necessarily lead to pressure reduction or increasing in first seal
Add.
Preferably, pump is configured to second fluid from holding vessel, via the opening valve started by actuating device, and along one
A or multiple conduits are pumped into the space between first piston component and second piston component.Preferably, second piston component
Including one or more conduits, extend radially outward from valve to the space between piston element.Preferably, one or more
Conduit diagonally extends to the space between piston element from valve.
Advantageously, the constant depth of second fluid is maintained between first piston component and second piston component.The
Two fluids can be pumped into the space between piston element in any stage in compression process.It is preferable, however, that uncompressed
Start pump during stage, that is, when at or near the bottom that earthen pipe is arranged in piston component.
Preferably, equipment is configured so that the pressure between the first-class side of first piston component and second fluid substantially
Balance.Preferably, the prestressing force tension for the biasing device being applied in actuating device corresponds roughly to the weight of first piston component
The friction generated between amount and earthen pipe and first seal.
Preferably, the pressure difference contacted between the side of the first piston component of first fluid and the side of contact second fluid is less than
75Bar, more preferably less than 50Bar, even more preferably less than 25Bar, and still more preferably less than 15Bar.It is highly preferred that contact the
Pressure difference between the side of the first piston component of one fluid and the side for contacting second fluid is less than 10Bar, preferably smaller than 5Bar, and
More preferably less than 3Bar.
As a result, the small radial force between first piston component and the first radial seal leads to less abrasion and loss.
Advantageously, equipment is configured to that first seal is made to be subjected only to the pre-tensioner pressure limited by sealing element, to minimize thereon
Abrasion.
Preferably, compressor piston includes the entrance that unpressed first fluid is supplied in piston via it, and pressure
The outlet that the first fluid of contracting is flowed out via it.Preferably, the pressure of entrance fluid is about 1-200barg；It is more preferably big
About 1-30barg；And most preferably about 3-10barg.
Preferably, compressor piston is configured to the pressure of first fluid increasing to 100bara between 1500bara.More
Preferably, compressor piston is configured to the pressure of first fluid increasing to 150bara between 1250bara.Most preferably,
Compressor piston is configured to the pressure of first fluid increasing to 300bara between 1000bara.Preferably, fluid is exported
Pressure is about 350Bar.
It can be appreciated that the desired pressure of first fluid depends on the first fluid used variation.Therefore, when first fluid is
When hydrogen, compressor piston may be configured to increase to the pressure of first fluid 500bara between 1500bara, more preferably up to
700bara is between 1400bara, and most preferably to 800bara is between 1300bara.
Alternatively, when first fluid is natural gas, compressor piston may be configured to increase to the pressure of gas
100bara is between 700bara, and more preferably up to 200bara is between 600bara, and most preferably to 300bara to 500bara
Between.
First fluid may include liquid.It is preferable, however, that first fluid includes gas, as natural gas, fuel gas, hydrogen,
Or mixtures thereof gaseous hydrocarbon, liquefaction burning gases, nitrogen, helium, oxygen and the inert gas such as argon,.It is highly preferred that first fluid includes
Fuel gas, for example, natural gas or hydrogen.
Second fluid may include liquid, preferably substantially incompressible.Preferably, second fluid includes ionic liquid
Or mixtures thereof body, LOHC (the organic hydrogen carrier of liquid), half heavy water (HDO), deuterium oxide (heavy water), water or hydraulic oil,.Most preferably
Ground, second fluid include LOHC or ionic liquid.Ionic liquid is substantially only made of ion, and is a kind of lower than 100 DEG C
At a temperature of be liquid material.LOHC is the carbon-based liquid that property is very similar to ionic liquid.Ionic liquid and the advantages of LOHC
Be they show it is low or without steam pressure, good lubrication property, there is no gas meltability, high thermal stability and height
Thermal capacity.
In one embodiment, and it is preferably the embodiment that wherein second fluid is ionic liquid, equipment is configured with
Ionic liquid cushion between piston component and first fluid to be compressed is set.Preferably, ionic liquid cushion is set
It sets on the top of first (that is, floating piston component), and fills all dead space (dead when being in compression stage
space).Ionic liquid cushion preferably includes the fluid with low vapor pressure, and may include substantially pure ionic liquid or from
The mixture of sub- liquid and LOHC, or be made of them.
Preferably, equipment includes oscillation compressor.Preferably, equipment includes hydraulic-driven compressor.It is preferred real at one
It applies in example, equipment includes piston compressor.Preferably, equipment includes compressor with liquid piston, wherein second fluid (preferably liquid
Body) for driving the compression of first fluid (preferably gas).In a further advantageous embodiment, equipment includes ion compression machine.
In one embodiment, equipment includes single-stage compressor.Preferably, equipment includes plunger, is functionally connected
To the one or more shift pistons for being configured to vibrate in shell, and the piston is configured to that second fluid is made to be displaced to compressor
Piston and from compressor piston be displaced, to compress first fluid therein.Shift piston can be connected in series.By plunger actuation
The oscillation of the or each shift piston is promoted by being supplied to the lubricant in shell via at least one entrance.In some embodiments
In, for plunger lubricant can be hydraulic oil, LOHC or ionic liquid, or mixtures thereof.
In another embodiment, equipment preferably includes compound compressor (for example, 2 grades, 3 grades or 4 grades), including series connection connects
The multiple compressor stages connect.Preferably, equipment includes the compressor stage between one to 20.It is highly preferred that equipment includes
Compressor stage between two to ten.Most preferably, equipment includes the compressor stage between three to five.Most preferred
In embodiment, equipment includes four compressor stages being connected in series.
Equipment may include compound compressor comprising the multiple compressor stages being connected in parallel.Advantageously, this will improve and compresses
The handling capacity of machine.
Therefore, in one embodiment, equipment may include multiple series, wherein each series includes the multiple of series connection
Compressor stage, and multiple series are connected in parallel.
According to the second aspect of the invention, a kind of method for compressing first fluid is provided, this method comprises:
First fluid is supplied to the compressor piston including piston cylinder and the piston component being slidably mounted therein,
Middle piston component includes the first piston component and second piston component spaced apart for defining therebetween space, which is configured to
Accommodate the second fluid for causing the compression of first fluid；And
Second fluid is supplied to the space between first piston component and second piston component, and compresses first fluid.
Preferably, the method for second aspect includes the equipment using first aspect.
Preferably, this method includes the sky being pumped to second fluid between first piston component and second piston component
Between, at least one second fluid supply preferably extended between the space between second fluid holding vessel and piston element is led
Pipe.
Preferably, this method includes that will let out via the second radial seal being arranged between second piston component and earthen pipe
Any second fluid of leakage is supplied into holding vessel.
Preferably, this method includes control second fluid via the valve being arranged at least one second fluid supplying duct
At least one second fluid supplying duct is flowed through to enter in the space between piston element.Preferably, this method includes that valve is inclined
The closed structure being pressed onto second fluid supplying duct.Biasing device preferably includes spring, and more preferably helical spring.
Preferably, this method includes in response to the pressure change on the first radial seal, or in response to first piston portion
Part carrys out trigger valve relative to the position for actuating set-point.Preferably, this method includes in response to the pressure on the first radial seal
Power variation, or start pump relative to the position for actuating set-point in response to first piston component.Preferably, this method is included in
Opening valve when pressure on first radial seal increases, and second fluid is preferably pumped across valve.Preferably, this method packet
The closure valve when the pressure on the first radial seal reduces is included, and deactivates valve preferably to prevent the pumping of second fluid.
In use, when the pressure on the first-class side of the first radial seal is due to passing through the second radial seal
The leakage of second fluid and when increasing, this method includes that first piston is pushed towards second piston component, so as to cause the unlatching of valve.
This method may include the opening valve when the position of first piston component reaches and actuates set-point, and/or living first
The mobile position of plunger member is more than closure valve when actuating set-point.
Preferably, this method includes being pumped by second fluid from holding vessel via opening valve and along one or more conduits
In space between first piston component and second piston component.Preferably, this method includes pumping along one or more conduits
Second fluid, conduit are extended radially outward from valve to the space between piston element.
Preferably, this method includes keeping the depth of constant between first piston component and second piston component.It should
Method may include in the space that second fluid is pumped between piston element at any stage in compression process.However,
Preferably, this method includes starting pump during the uncompressed stage, that is, at or near the bottom that earthen pipe is arranged in piston component
When.
Preferably, this method includes the pressure balanced between the first-class side and second fluid of first piston component.It is excellent
Selection of land, the pressure difference contacted between the side of the first piston component of first fluid and the side of contact second fluid is less than 75Bar, more excellent
Choosing is less than 50Bar, even more preferably less than 25Bar, and is even more preferably less than 15Bar.It is highly preferred that the of contact first fluid
Pressure difference between the side of one piston element and the side for contacting second fluid is less than 10Bar, preferably smaller than 5Bar, and more preferably less than
3Bar。
Preferably, this method includes supplying unpressed first fluid to compressor piston via entrance, and will compress
Fluid is supplied across outlet.Preferably, this method includes the use of compressor with liquid piston, wherein second fluid (preferably liquid
Body) for driving the compression of first fluid (preferably gas).In a further advantageous embodiment, equipment includes ion compression
Machine.
Preferably, this method includes making second by means of being configured to the one or more shift pistons vibrated in shell
Displacement of fluid is displaced to compressor piston and from compressor piston, to compress first fluid therein.
First fluid may include liquid.Preferably, first fluid includes gas, such as natural gas, fuel gas, hydrogen, gaseous state
Or mixtures thereof hydrocarbon, liquefaction burning gases, nitrogen, helium, oxygen and the inert gas such as argon,.
Second fluid may include liquid, preferably substantially incompressible.Preferably, second fluid includes ionic liquid
Or mixtures thereof body, LOHC (the organic hydrogen carrier of liquid), half heavy water (HDO), deuterium oxide (heavy water), water or hydraulic oil,.Most preferably
Ground, second fluid include LOHC or ionic liquid.
In one embodiment, and it is preferably the embodiment that wherein second fluid is ionic liquid, this method includes using
Ionic liquid cushion between piston component and first fluid to be compressed is set.Preferably, ionic liquid cushion is set
It sets on the top of first piston element, and fills all dead spaces when being in compression stage.Ionic liquid cushion is excellent
Choosing includes the fluid with low vapor pressure, and may include the mixture of substantially pure ionic liquid or ionic liquid and LOHC, or
It is made of them.
Detailed description of the invention
All features as described herein (include any accompanying claims, abstract and drawings) and/or so disclosed
Where all steps of method or process can appointing other than this at least some category feature and/or the mutually exclusive combination of step
What combination is combined with above-mentioned any aspect.Now will only by way of example, embodiment with reference to the accompanying drawings to describe the present invention, attached
In figure:
Fig. 1 is the schematic diagram of the first embodiment of gas compressor according to the present invention, and having respectively has piston component
Two piston compressors (left-hand side and right-hand side) spaced apart, piston component is slidably mounted in earthen pipe；
Fig. 2 is the schematic diagram of the second embodiment of gas compressor according to the present invention, is slidably mounted with being respectively provided with
Piston component two piston compressors (left-hand side and right-hand side) spaced apart.Piston component in each compressor uses
Ionic liquid cushion thereon, and the piston component of left-hand side piston compressor has been moved to the top of its earthen pipe, thus through
Gas therein is compressed by ion cushion, and the piston component of right-hand side piston compressor is positioned towards the middle part of its earthen pipe, is made
It obtains gas and keeps substantially uncompressed；
Fig. 3 is the side cross-sectional view of compressor shown in Fig. 1, and wherein the piston component of left-hand side piston compressor has moved
To the top of its earthen pipe, to compress gas therein, and the piston component of right-hand side piston compressor is located in its earthen pipe
Base position, so that gas keeps uncompressed.Live gas is sucked towards lower dead center；
Fig. 4 is the amplification side cross-sectional view at the top of left-hand side piston compressor shown in Fig. 3, wherein being located in its earthen pipe
Piston component at top compressed gas；And
Fig. 5 is the amplification side cross-sectional view of a piston component of the piston compressor being present in compressor of the invention.
Specific embodiment
Referring to Fig. 1-3, show for compressed gas 14 (e.g., natural gas (CNG), fuel gas, hydrogen, gaseous hydrocarbon, liquefaction
Burning gases, nitrogen, helium, oxygen and as argon inert gas) compressor 2 embodiment.For example, compressor 2 can be used for compressed hydrogen,
Hydrogen is used as the fuel in the vehicle of hydrogen driving.As shown, for example, by means of ion compression machine or by piston compressor come liquid
The driving compression of pressure ground.Accordingly, it will be recognized that compressor 2 is compressor with liquid piston.
Fig. 1 and 2 respectively illustrates the first embodiment and second embodiment of compressor 2.In each example, compressor
2 include two piston compressors 4 in parallel spaced apart, and unpressed gas 14 is supplied in compressor 4 via entrance 40, and
The gas 14 of compression is flowed out from compressor via outlet 41.The pressure of inlet gas 14 is about 6Bar, and the compressed gas exported
The pressure of body 14 is about 350Bar.Entrance 40 and outlet 41 are furnished with multiple valve 44, with low-down frequency desired value
(compressor frequency 0.1 Hz-5 Hz, more preferable 0.5 Hz -1.5 Hz also imply that the low actuation frequency of valve) is to allow gas
14 therebetween through.
As can be seen from the drawing, shown compressor 2 is single-stage compressor (that is, 1 grade).Shown in piston pressure in 1 grade of system
Contracting machine 4 is in parallel, and is driven by single plunger 30, and plunger 30 causes the piston 32 being connected on plunger 30 in shell 58
Reciprocating vibration.Each piston 32 is connected on corresponding pump 42, is arranged to make to be arranged in the hydraulic-driven in reservoir 60
Fluid 16 is displaced to its corresponding compressor piston 4 and is displaced with from its corresponding compressor piston 4, to compress gas therein
14。
However, it is also conceived of compound compressor, wherein at least two series connections in the compressor 2 in Fig. 3, so that
The suction inlet port 40 of elevated pressures grade is connected to via the discharge of the outlet 41 of the compressor 4 of two identical pressure stages
On.For example, 2 grades of four compressors may be present, wherein the pressure for entering the inlet gas 14 of the first compressor 2 is 6bara, and go out
The pressure of mouth compressed gas 14 is 16.6bara；Pressure into the inlet gas 14 of the second compressor 2 is 16.6bara, and is gone out
The pressure of gas 14 is 45.7bara；Pressure into the inlet gas 14 of third compressor 2 is 45.7bara, and is worked off one's feeling vent one's spleen
The pressure of body 14 is 126bara；And the pressure for entering the inlet gas 14 of the 4th compressor 2 is 126bara, and exit gas 14
Pressure be 350bara.
Hydraulic-driven fluid 16 is incompressible, and can be any ionic liquid, LOHC (the organic hydrogen carrier of liquid), again
Or mixtures thereof water, deuterium oxide, water or hydraulic oil,.Overall hydraulic system need for heavy water low lubrication (for example, compared to
Such as the standard lubricant of oil) it designs.The oscillation of the piston 32 driven by plunger 30 is promoted by lubricant 34, lubricant 34 via
Entrance 54 is supplied in shell 58.In some embodiments, for the lubricant 34 of plunger 30 can for hydraulic oil 34, LOHC or from
Or mixtures thereof sub- liquid,.Lubricant 34 should keep separating with fluid 16 is driven, because of its compression for needing to have different
Than.
In figs 2 and 3, compressor 2 is shown, wherein its left-hand side piston compressor 4 is so that its compressed gas 14
Construction, and wherein its right-hand side piston compressor 4 is live gas via wherein gas 14 keeps big after the sucking of inlet valve 40
Cause uncompressed construction.The piston sensor 46 being connected on each pump 42 detects the construction of each piston compressor 4, and promotees
Into corresponding oscillation therein, so that gas 14 is automatically fed in piston compressor 4 via entrance 40, and is compressed, and so
It is discharged under high pressure by by outlet 41.
In the compressor of the prior art, compressed gas 14 is arranged in seals, and piston bears all gas
Pressure, this leads to the abrasion during continuous use.However, compressor 2 of the invention is furnished with mechanism, by this referring to Fig. 3 with 4
Mechanism, service life of the seals 18 in piston compressor 4 by reduce abrasion thereon and loss it is significant extend.Such as
Most clear finding in Fig. 5, each piston compressor 4 include earthen pipe 6, and piston component 7 (also referred to as " balance " piston) is slideably
It is mounted in earthen pipe 6.Each piston component 7 is made of the floating piston 10 being connected on main piston 8 spaced apart.Floating piston
10 are arranged to vibrate in earthen pipe 6, and wherein by the sealing of the radial gas sealing element 18 of such as V-shape piston ring.Floating piston 10
Side (that is, shown in Fig. 1,2 and 5 upside) connect with gas 14 (for example, hydrogen or the natural gas of compression, CNG) to be compressed
Touching.(that is, downside shown in Fig. 1,2 and 5) in its opposite side, floating piston 10 and same incompressible hydraulic-driven stream
The thin layer of body 16 contacts, which is displaced that piston component 7 is caused to vibrate in earthen pipe 6 by piston 32.
Floating piston 10 is medially embedded in main piston 8, and is thus concentrically guided.Main piston 8 is also slideably pacified
It is sealed in earthen pipe 6, and by the hydraulic radial sealing element 20 of such as V-shape piston ring with it.Setting is in floating piston 10 and master
Incompressible hydraulic-driven fluid 16 in space between piston 8 via any leakage for passing through sealing element 20 flow of pressurized
Body along its supply pipe 26 be fluidly connected on holding vessel 28, in holding vessel 28 storage supplement hydraulic-driven fluid 16, this
It is shown in Fig. 1 and 2.
Referring to Fig. 5, the leakage that holding vessel 28 is generated to the space between piston 8,10 is recycled back to streamline, because in compressor
During the use of piston 4, any leakage part of the hydraulic-driven fluid 16 at hydraulic seal 20 can pass through following driving stream
The supplement stream of body 16 balances.There is main piston 8 hydraulic fluid to supplement supply valve 24, is fluidly connected to by conduit 38,50
On holding vessel 28.Valve 24 is biased into closed position by the helical spring 22 or cupuliform spring 22 being applied to it.However, if
The leakage of the driving fluid 16 of pressure on the gas side of one sealing element 18 due to passing through sealing element 20 and increase, then towards main piston
8 push floating piston 10, lead to supplement feed system via the starting of spur units 12 being connected on valve 24.Valve 24 is by actuating list
Member 12 is opened, and hydraulic fluid 16 is pumped from holding vessel 28 along conduit 50,38 by pump 48, passes through opening valve 24, and diagonally lead
Pipe 36, diagonal conduit 36 are directly communicated to the space between main piston 8 and floating piston 10.Therefore, the perseverance of hydraulic-driven fluid 16
Depthkeeping degree is maintained between floating piston 10 and main piston 8.Replacement driving fluid 16 can pump in any stage in this process
It returns in the space between floating piston 10 and main piston 8.However, in embodiment shown in the accompanying drawings, when piston component 7 is arranged
When at the bottom of earthen pipe 6, that is, uncompressed stage, starting pump 48.
Pressure design between the gas side of floating piston 10 and incompressible hydraulic fluid 16 is at constantly balancing.Promote
The prestressing force tension of spring 22 on moving cell 12 corresponds between the weight and earthen pipe 6 and seals 18 of floating piston 10
The friction of generation.The pressure difference contacted between the side of the floating piston 10 of gas 14 and the side of contact hydraulic fluid 16 is less than 2Bar,
And the small radial force between floating piston 10 and sealing element 18 leads to less abrasion and loss.
Therefore, system described above always attempt to make first gas sealing element 18 be subjected only to be limited by sealing element 18 it is pre-
Tensioning pressure, to minimize the abrasion on sealing element 18.In the compressor of the prior art, the gas that is contacted with compressed gas 14
Body sealing element is exposed to the pressure equal to gas pressure, this causes to wear, and by the way that piston component 7 is divided into two (that is, floating
Piston 10 and main piston 8), the seals 18 in compressor 2 of the invention are exposed to the reduced pressure of only 2bar.Cause
This, the present invention leads to being substantially reduced for the load in seals 18.Although hydraulic seal 20 is exposed to the prior art
The similar pressure born in compressor, but it will not influence whole system because any leakage of hydraulic fluid 16 immediately from
Holding vessel 28 reinjects go back to the space between piston 10,12 along conduit 36.The embodiment of compressor 2 shown in Fig. 3 is substantially
With it is shown in Fig. 2 identical, only in Fig. 3, ionic liquid cushion 56 be located at piston component 7 and compression gas 14 it
Between.This is useful in embodiment when hydraulic-driven fluid 16 itself is ionic liquid, and is LOHC in driving fluid 16
When may not be required.Ionic liquid cushion 56 is filled on the top of floating piston 10, and when being in compression stage
All dead spaces.Ionic liquid cushion 56 includes the fluid with low vapor pressure, and can by any pure ionic liquid or from
The mixture of sub- liquid and LOHC are constituted.
Due to the good lubrication generated between piston 8,10 and earthen pipe 6, the advantages of compressor 2, is to extend piston seal
The wearing- in period (> 20000h) of part 18,20.This provides excellent anticorrosion and the mechanical protection for compressor pinking, and
So low noise is caused to discharge.Further advantage includes leading to the long service life of lower maintenance cost.Since lower contact is pressed
Power, this after and minimize maintenance cost, therefore this causes to improve equipment availability, and reduces the requirement on opposite contact surface.
Claims (15)
1. a kind of for compressing the equipment of first fluid, the equipment includes: compressor piston, and the compressor piston includes living
Plug cylinder and the piston component being slidably mounted therein, wherein the piston component includes the first and second pistons spaced apart
Component, first and second piston elements spaced apart define therebetween space, and the space is configured to accommodate for causing
The second fluid of the compression of the first fluid；And for supplying the second fluid to first and second piston portion
The device in the space between part.
2. equipment according to claim 1, which is characterized in that the equipment includes being configured to store the second fluid
In holding vessel wherein, and the space for being supplied to the second fluid between first and second piston element
Described device include pump and at least one second fluid supplying duct, at least one described second fluid supplying duct is described
Extend between the space between holding vessel and the piston element, the fluid is along at least one second fluid supply
Conduit supply preferably wherein starts the pump, and be arranged in first and second piston portion during the uncompressed stage
The second fluid in the space between part is connected to the storage via at least one second fluid leakage catheter fluid
It deposits on tank.
3. equipment according to claim 2, which is characterized in that the second piston component includes valve, and the valve is configured to
Control the sky that the second fluid is flowed into via at least one described second fluid supplying duct between the piston element
Between in, preferably wherein, the valve includes biasing device, and the biasing device is configured to the valve being biased into the second
Closed structure in body supplying duct, more preferably wherein, the biasing device include spring, are optionally helical spring or cup
Shape spring.
4. equipment according to claim 3, which is characterized in that the second piston component includes actuating device, the rush
Dynamic device is constructed to respond to pressure change in the first seal or in response to the first piston component relative to rush
The position of dynamic set-point starts the valve, and preferably wherein, the pump is configured to the second fluid from the holding vessel
First and second piston portion is pumped into via the opening valve started by the actuating device and along one or more conduits
In the space between part.
5. equipment according to claim 4, which is characterized in that the actuating device is configured in the first seal
The pressure open the valve when increasing, and start the pump and second fluid be pumped across the valve and/or described
Actuating device is configured to be closed the valve when the pressure in the first seal reduces, and deactivates the pump to prevent
The pumping of second fluid, and/or wherein, the pressure on the first-class side of the first seal is due to described
When second fluid increases via the leakage of the second seal, the first piston component is configured to towards the second piston
Component is pushed, and opens the valve so as to cause the actuating device, and/or wherein, the institute being applied in the actuating device
The prestressing force tension for stating biasing device corresponds roughly to the weight and earthen pipe and the first seal of the first piston component
Between the friction that generates.
6. equipment according to claim 4, which is characterized in that the actuating device is configured in the first piston component
The position reach described in open the valve when actuating set-point and/or the actuating device be configured to it is living described first
The position movement of plunger member is closed the valve when actuating set-point more than described in.
7. equipment according to any preceding claims, which is characterized in that the first piston component is configured to described
Oscillation in earthen pipe, and the first piston component is sealed by the first radial seal and the earthen pipe, first radial seal
Part is optionally shaft seal or piston seal, and the second piston component is configured to vibrate in the earthen pipe, and institute
It states second piston component to be sealed by the second radial seal and the earthen pipe, second radial seal is optionally bar sealing
Part or piston seal and the first piston component are substantially centrally mounted on the second piston component, and thus
Concentrically guided.
8. equipment according to any preceding claims, which is characterized in that described in first fluid contact to be compressed
The side of first piston component, and the second fluid contacts the opposite side of the first piston component, it is preferably wherein, described
Equipment includes that the leakage to the space between first and second piston element is recycled back to streamline, because in the compression
During the use of machine piston, any leakage of the second fluid at the second seal by second fluid supplement stream from
It balances dynamicly.
9. equipment according to any preceding claims, which is characterized in that the second piston component includes one or more
A conduit, one or more of conduits are radially outward toward the space between the piston element from the valve,
Preferably wherein, one or more of conduits diagonally extend to the space between the piston element from the valve.
10. equipment according to any preceding claims, which is characterized in that contact the first fluid described first is living
Pressure difference between the side of plunger member and the side for contacting the second fluid be less than 75Bar, 50Bar, 25Bar, 15Bar, 10Bar,
5Bar is less than 3Bar, and the compressor piston be configured to increase to the pressure of the first fluid 100bara with
Between 1500bara.
11. equipment according to any preceding claims, which is characterized in that the first fluid includes gas, such as natural
Or mixtures thereof gas, fuel gas, hydrogen, Gaseous Hydrogen, liquefaction burning gases, nitrogen, helium, oxygen and the inert gas such as argon, and it is described
Second fluid includes liquid, and the liquid is generally incompressible, and preferably wherein, the second fluid includes ionic liquid
Or mixtures thereof body, LOHC (the organic hydrogen carrier of liquid), half heavy water (HDO), deuterium oxide (heavy water), water or hydraulic oil,.
12. equipment according to any preceding claims, which is characterized in that it is slow that the equipment is configured with ionic liquid
Rush object, the ionic liquid cushion is arranged between the piston component and the first fluid to be compressed, preferably its
In, the ionic liquid cushion includes the mixture of substantially pure ionic liquid or ionic liquid and LOHC, or by their structures
At.
13. equipment according to any preceding claims, which is characterized in that the equipment includes:
Vibrate compressor and/or hydraulic-driven compressor；And/or
Compressor with liquid piston and/or ion compression machine；And/or
Single-stage compressor or compound compressor；And/or
Plunger is functionally connected to the one or more shift pistons for being configured to vibrate in shell, and one
Or multiple shift pistons are configured to that the second fluid is made to be displaced to the compressor piston and be displaced from the compressor piston,
To compressing the first fluid therein, preferably wherein, as described in the plunger actuation or the vibration of each shift piston
It swings and is promoted by the lubricant being supplied to via at least one entrance in the shell, wherein the lubricant is lubricating oil, LOHC
Or mixtures thereof or ionic liquid,.
14. a kind of method for compressing first fluid, which comprises
First fluid is supplied in compressor piston, the compressor piston includes piston cylinder and is slidably mounted in it
In piston component, wherein the piston component includes the first and second piston elements spaced apart, described first and second is living
Plunger member defines therebetween space, and the space is configured to accommodate the second fluid for causing the compression of the first fluid；
And
Second fluid is supplied to the space between first and second piston element, and is compressed described first-class
Body.
15. according to the method for claim 14, which is characterized in that the method is used and wanted according to claim 1 to right
Equipment described in asking any one of 13.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB1601602.4A GB201601602D0 (en) | 2016-01-28 | 2016-01-28 | An apparatus and method for compressing fluid |
| GB1601602.4 | 2016-01-28 | ||
| PCT/EP2017/025009 WO2017129374A1 (en) | 2016-01-28 | 2017-01-17 | An apparatus and method for compressing fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109154286A true CN109154286A (en) | 2019-01-04 |
Family
ID=55590359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780020544.6A Pending CN109154286A (en) | 2016-01-28 | 2017-01-17 | Device and method for compression fluid |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20190032646A1 (en) |
| EP (1) | EP3408534A1 (en) |
| JP (1) | JP2019507271A (en) |
| KR (1) | KR20180105204A (en) |
| CN (1) | CN109154286A (en) |
| GB (1) | GB201601602D0 (en) |
| RU (1) | RU2018129150A (en) |
| WO (1) | WO2017129374A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111512044A (en) * | 2017-11-22 | 2020-08-07 | 林德有限责任公司 | Method for operating a piston compressor and piston compressor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102293712B1 (en) * | 2020-10-06 | 2021-08-26 | (주)한국에너지기술단 | Air Compression Device including Liquid Piston |
| KR102417189B1 (en) * | 2022-04-08 | 2022-07-06 | 주식회사 티이씨 | Gas compression device for usingionic liquid |
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| GB624556A (en) * | 1944-05-23 | 1949-06-13 | Joseph Lambert Jameson | Improvements in the making of gas tight joints for the pistons of gas compressors |
| US3339464A (en) * | 1963-12-13 | 1967-09-05 | Philips Corp | Device including at least one seal in the form of a rolling diaphragm between two co-axially arranged relatively movable elements |
| DE102010053091A1 (en) * | 2010-12-01 | 2012-06-06 | Linde Aktiengesellschaft | Multi-stage piston compressor |
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| CN104047826A (en) * | 2014-06-13 | 2014-09-17 | 江苏盈科汽车空调有限公司 | Multistage compression type air compressor |
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2016
- 2016-01-28 GB GBGB1601602.4A patent/GB201601602D0/en not_active Ceased
-
2017
- 2017-01-17 US US16/073,186 patent/US20190032646A1/en not_active Abandoned
- 2017-01-17 CN CN201780020544.6A patent/CN109154286A/en active Pending
- 2017-01-17 RU RU2018129150A patent/RU2018129150A/en not_active Application Discontinuation
- 2017-01-17 WO PCT/EP2017/025009 patent/WO2017129374A1/en active Application Filing
- 2017-01-17 EP EP17700475.1A patent/EP3408534A1/en not_active Withdrawn
- 2017-01-17 KR KR1020187024407A patent/KR20180105204A/en unknown
- 2017-01-17 JP JP2018539043A patent/JP2019507271A/en active Pending
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| GB319430A (en) * | 1928-07-04 | 1929-09-26 | Luvax Ltd | Improvements relating to automatic lubrication systems |
| GB624556A (en) * | 1944-05-23 | 1949-06-13 | Joseph Lambert Jameson | Improvements in the making of gas tight joints for the pistons of gas compressors |
| US3339464A (en) * | 1963-12-13 | 1967-09-05 | Philips Corp | Device including at least one seal in the form of a rolling diaphragm between two co-axially arranged relatively movable elements |
| DE102010053091A1 (en) * | 2010-12-01 | 2012-06-06 | Linde Aktiengesellschaft | Multi-stage piston compressor |
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| CN111512044A (en) * | 2017-11-22 | 2020-08-07 | 林德有限责任公司 | Method for operating a piston compressor and piston compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017129374A1 (en) | 2017-08-03 |
| US20190032646A1 (en) | 2019-01-31 |
| GB201601602D0 (en) | 2016-03-16 |
| KR20180105204A (en) | 2018-09-27 |
| EP3408534A1 (en) | 2018-12-05 |
| JP2019507271A (en) | 2019-03-14 |
| RU2018129150A (en) | 2020-02-28 |
| RU2018129150A3 (en) | 2020-03-25 |
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