CN208057576U - Hermetically sealed no piston pressure cylinder and application system - Google Patents
Hermetically sealed no piston pressure cylinder and application system Download PDFInfo
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- CN208057576U CN208057576U CN201820524554.5U CN201820524554U CN208057576U CN 208057576 U CN208057576 U CN 208057576U CN 201820524554 U CN201820524554 U CN 201820524554U CN 208057576 U CN208057576 U CN 208057576U
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Abstract
The utility model discloses a kind of hermetically sealed no piston pressure cylinder and application systems.The pressure cylinder includes the totally-enclosed pressure cavity of outer shell sleeve and flexible expandable；Totally-enclosed pressure cavity includes at least one flexible expandable unit, preceding seal member and rear seal member, and the rear pressure chamber of the flexible expandable of connection and the preceding pressure chamber of flexible expandable are formed in totally-enclosed pressure cavity；The preceding pressure chamber of all flexible expandable units and rear pressure chamber are sealed to flexible expandable, totally-enclosed pressure chamber without relative motion contact surface by preceding seal member and rear seal member；Totally-enclosed pressure cavity is slideably inserted into outer shell sleeve.The utility model is from structurally eliminating piston, piston rod and sealing ring so that the overall structure of pressure cylinder is simpler and reliable, and is processed without precision machinery, reduces manufacturing cost, improves reliability.Water may be used or air substitution hydraulic oil transmits medium as power.It can be used directly as pneumatic cylinder.
Description
Technical field
The utility model is related to a kind of pressure cylinder, especially a kind of hermetically sealed no piston pressure cylinder and application system.
Background technology
The essential structure of existing conventional cylinder be unable to do without piston, piston rod and sealing ring.Its operation principle is, by into
Outlet injection hydraulic oil, and by the endoceliac hydraulic oil pressurizing urges of convection current or recycling piston and piston rod, to realize liquid
Conversion of the pressure energy to mechanical energy.Traditional two-stroke hydraulic cylinder usually has multiple sealing rings, wherein mainly piston and piston rod
Sealing element.The sealing ring of piston rod is used for preventing piston rod hydraulic oil when pressured state is passed in and out from fluid cavity from escaping
Enter in hydraulic cylinder in preventing extraneous sundries.Piston rod seals need hydraulic oil lubricious simultaneously, to reduce rubbing for sealing ring
Wipe consume.The sealing ring of piston in hydraulic cylinder compression work for preventing hydraulic oil mutual between front and back two fluid chambers
Infiltration.
Existing high-end hydraulic cylinder not only requires the pressure size (size of energy output) that hydraulic cylinder can be born, more
It is important that having very high requirement to piston and the accuracy of piston rod propulsion and backhaul distance, (accuracy of control can
Enough reach 0.1 millimeter).Therefore, most of traditional two-stroke hydraulic cylinder generally use positive displacement pumps piston and piston rod are promoted and
Backhaul distance implementation accurately controls.It can realize that the basic principle accurately controlled of adjusting the distance is the fluid cavity of liquid and steel material composition
The volume of body is fixed under conditions of no newly injection liquid, is incompressible and unrelated with pressure.As long as utilizing
The volume size that positive displacement pump accurately controls injection hydraulic oil can accurately control piston and piston rod propulsion and backhaul
Apart from size.Positive displacement pump usually has piston-type and the different types such as rotary-type.The operation principle of positive displacement pump is will be isometric and small
Volumes of fluid with controlling inject fluid chamber in, inject fluid volume number it is unrelated with the pressure in cavity.
The essential structure of conventional cylinder no essential change over more than 100 years, but some inherent shortcomings are there is, it is main
Including：One) due to needing the rubbing surface to relative motion in cylinder to be lubricated, power transmitting medium must be hydraulic oil
Or similar fluid, and light water cannot be used.Hydraulic oil kind, specification are various, and different use environments and condition need to use
Different types of hydraulic oil, improper use can cause the damage of sealing ring.Meanwhile hydraulic oil is inflammable, exists and uses and the side of storage
The security risk in face.In addition, the leakage of hydraulic oil and the improper disposition of discarded hydraulic oil can cause environment seriously to pollute；Two)
Inner wall of cylinder, piston and piston rod are required to accurate machining and can be only achieved be identical with sealing ring, to reach in high pressure
Lower reduction frictional force, while the purpose for preventing hydraulic oil from escaping.The requirement of finishing causes the raising of hydraulic cylinder manufacturing cost；
Three) multiple sealing rings must be used.Sealing ring is not only of high cost but also is the most weak link of entire hydraulic cylinder, needs often more
It changes and safeguards.The failure of most hydraulic cylinders be all as the breakage of sealing ring and caused by.Usual hydraulic cylinder sealing circle is damaged
And whole hydraulic oil are needed replacing after being replaced.
Currently, have a kind of entitled " offshore platform leans on ship part (marine shock cell) " in ocean engineering field
Device, the device use the bonding by Vulcanization technology of rubber and metal, and two steel bushings of coaxial arrangement and a rubber tube are connected
It is connected into one, is formed and individually leans on ship part, for reducing the impulsive contact force generated between offshore platform and berthing ship, absorbing berthing punching
Hit energy.As shown in Figure 1A sectional views, individually mainly it is made of three parts by ship part：One outer steel sleeve cylinder 101, one and outer steel
The interior steel bushing 102 and a rubber tube being placed between outer steel sleeve cylinder 101 and interior steel bushing 102 that sleeve 101 is coaxially disposed
103.The outer surface of rubber tube 103 and the inner surface bonding by Vulcanization of outer steel sleeve cylinder 101；The inner surface of rubber tube 103 and interior steel bushing
The outer surface bonding by Vulcanization of cylinder 102.The single operation principle by ship part can be shown in Figure 1B：When 102 front end of interior steel bushing by
To berthing ship impulsive contact force F1 when, due to rubber tube 103 flexibility and interior steel bushing 102 recycling, maximum impulsive contact force by
Limitation, crash energy are stored in 103 body of rubber tube of deformation.After impulsive contact force F1 disappears, it is stored in deformed rubber
Energy in 103 bodies of cylinder is quickly converted to the restoring force of rubber tube 103, and rubber tube 103 is made to be restored to its reset condition, such as Figure 1A
It is shown.
The maximum impulsive contact force that 200 tons or more can be individually born by ship part.The device is ripe and long-tested product,
It has been applied successfully more than 60 years, 30 years Maintenance frees and can have been kept under severe Jobs on the sea environment extensively in ocean engineering field
Its basic function.Successfully being applied on the fixed platform of world marine site sea by ship part more than 20,000 or more.Rubber
The history of vulcanization existing upper a century of gluing technique of glue and metal, it is ripe, safe and reliable.But the device is only used at present
Crash energy is passively absorbed, and cannot actively export mechanical kinetic energy as conventional cylinder.
Invention content
The utility model provides a kind of hermetically sealed no piston pressure cylinder to solve technical problem present in known technology,
This can actively export mechanical kinetic energy without piston pressure cylinder and can replace most conventional pressure cylinders.
The utility model is adopted the technical scheme that solve technical problem present in known technology：It is a kind of hermetically sealed
Without piston pressure cylinder, include the totally-enclosed pressure cavity of outer shell sleeve and flexible expandable；The totally-enclosed pressure cavity includes
At least one flexible expandable unit, preceding seal member and rear seal member；The flexible expandable unit includes preceding outer sleeve
With rear outer sleeve, the preceding outer sleeve and it is described after outer sleeve be internally provided with a coaxial and shorter inner sleeve, in institute
State inner sleeve outer middle side part be connected with it is ring-like by clamp assembly, be equipped between the preceding outer sleeve and the inner sleeve and they
Affixed preceding rubber ring is equipped with the rear rubber ring affixed with them, before described in the rear between outer sleeve and the inner sleeve
Rubber ring and the rear rubber ring are separately positioned on the ring-like both sides by clamp assembly；Outer sleeve and the rear rubber after described
Ring forms the preceding pressure of the rear pressure chamber of flexible expandable, the preceding outer sleeve and the preceding rubber annular at flexible expandable
Chamber, the preceding pressure chamber are connected with the rear pressure chamber by the inner sleeve；The preceding seal member and the rear sealing
The preceding pressure chamber of all flexible expandable units and rear pressure chamber are sealed to a flexible expandable, the opposite fortune of nothing by part
The totally-enclosed pressure chamber of dynamic contact surface；The totally-enclosed pressure chamber is connect with working media inlet and outlet nozzle；The totally-enclosed pressure
Cavity is slideably inserted into the outer shell sleeve, and position limiting structure is equipped in the leading inside of the outer shell sleeve, described outer
The rear end of cylinder sleeve and the rear seal member are affixed.
It is installed on the contact surface with relative motion between outside the totally-enclosed pressure cavity and in the outer shell sleeve
There is friction reducing device.
It is described it is ring-like by clamp assembly be ring-like fixture block；The preceding outer sleeve and the rear outer sleeve are set up in parallel, by described
Rubber annular strain draws after outer sleeve and the inner sleeve and the ring-like scalable ring shaped slot formed by clamp assembly are constituted afterwards
Guide groove by the preceding outer sleeve and the inner sleeve and described ring-like is constituted preceding rubber by the scalable ring shaped slot that clamp assembly is formed
The deformation guiding groove of rubber ring, the rear pressure chamber is positioned at the rear of the rear rubber ring, the inside of the rear outer sleeve, before described
Pressure chamber be located at the front of the preceding rubber ring, the preceding outer sleeve inside.
The totally-enclosed pressure cavity uses a flexible expandable unit, and the preceding seal member is preceding top, described
Seal member is back cylinder cover, the front end face of the rear end and the back cylinder cover of the rear outer sleeve of one flexible expandable unit afterwards
Seal affixed, the front end of the preceding outer sleeve of one flexible expandable unit and the back-end sealing of the preceding top are affixed, institute
State the preceding pressure chamber and the rear pressure chamber composition totally-enclosed pressure chamber of a flexible expandable unit.
The totally-enclosed pressure cavity includes at least two flexible expandable units, and the preceding seal member is preceding top,
Seal member is back cylinder cover after described, all flexible expandable unit series connection, wherein two adjacent flexible expandable lists
The rear outer sleeve of member, the preceding outer sleeve of posterior flexible expandable unit and preceding flexible expandable unit is opposite to be welded；Position
Affixed, the flexibility positioned at forefront is sealed with the back cylinder cover in the rear end of the rear outer sleeve of the flexible expandable unit of rearmost
The front end of the preceding outer sleeve of scalable unit seals affixed, the preceding pressure of all flexible expandable units with the preceding top
Chamber and rear pressure chamber constitute the totally-enclosed pressure chamber.
The totally-enclosed pressure cavity use a flexible expandable unit, it is described it is ring-like by clamp assembly be ring-like clamping plate,
The preceding outer sleeve and the rear outer sleeve are separated by the ring-like clamping plate, are formed at the rear of the ring-like clamping plate scalable
Rear rubber annular strain guiding groove, telescopic preceding rubber annular strain guiding groove is formed in front of the ring-like clamping plate.
Seal member is back cylinder cover after described, and the preceding seal member is preceding sealing cover, and the preceding seal cap sealing is affixed
Inside the preceding outer sleeve, the back cylinder cover and it is described after outer sleeve back-end sealing it is affixed, the preceding pressure chamber and described
Pressure chamber constitutes the totally-enclosed pressure chamber afterwards.
Seal member is back cylinder cover after described, and the preceding seal member is preceding top, and the ring-like clamping plate is equipped with outer sleeve,
The outer sleeve of the ring-like clamping plate be slidably disposed on the outer shell sleeve and the preceding outer sleeve and it is described after outer sleeve it
Between；Rear end and the forward end seal of the preceding outer sleeve come directly towards before described is affixed, the front end face of the back cylinder cover with it is described after outside
The back-end sealing of sleeve is affixed, and the preceding pressure chamber and the rear pressure chamber constitute the totally-enclosed pressure chamber.
It is equipped with reset tension spring between the preceding seal member and the rear seal member.
The trailing flank of rubber ring and the leading flank of the preceding rubber ring are all made of annular concave curved surface after described.
It is equipped with preceding fixed ring, the preceding fixed ring and the preceding outer sleeve inner surface and institute in the front side of the preceding rubber ring
Rubber ring difference bonding by Vulcanization before stating, in the rear the rear side of rubber ring be equipped with rear fixed ring, it is described after fixed ring with it is described after
Outer sleeve inner surface and the rear rubber ring distinguish bonding by Vulcanization；The preceding rubber ring and the preceding outer sleeve and the inner sleeve
Bonding by Vulcanization respectively；Rubber ring distinguishes bonding by Vulcanization with the rear outer sleeve and the inner sleeve after described.
The friction reducing device is plastic sleeve.
The friction reducing device is using made of superhigh molecular weight polyethylene material.
The sealing is affixed for welding or flanged joint.
The application system of above-mentioned hermetically sealed no piston pressure cylinder, this is used without piston pressure cylinder as hydraulic cylinder, the liquid
Cylinder pressure transmits working media by rotary displacement pump.
The rotary displacement pump rotates in the forward direction in the hydraulic cylinder progradation injects the full envelope by working media
Pressure chamber is closed, is reversely rotated in the hydraulic cylinder return stroke and extracts working media out the totally-enclosed pressure chamber.
The application system of above-mentioned hermetically sealed no piston pressure cylinder, this is used without piston pressure cylinder as pneumatic cylinder, the gas
Cylinder pressure provides working media using air compressor machine.
The utility model has the advantages and positive effects of：
One) the totally-enclosed pressure cavity of pressure cylinder itself is made to have Telescopic using the excellent telescopicing performance of rubber,
To realize the direct conversion of hydraulic energy or air pressure and mechanical kinetic energy, and from structurally eliminating piston, piston rod and close
Seal so that the overall structure of pressure cylinder is simpler and reliable, and is processed without precision machinery, reduces hydraulic cylinder or gas
The whole manufacturing cost of cylinder pressure, improves the global reliability of hydraulic cylinder or pneumatic cylinder.
Two) since the contact for having relative motion and needing hydraulic pressure oil lubrication is not present in the totally-enclosed pressure cavity of pressure cylinder
Face, it is therefore possible to use light water or air substitution hydraulic oil transmit medium as power.So as to：1) cost is reduced；2)
The trouble for exempting hydraulic oil kind, specification selection and safeguarding；3) it eliminates the risk of environmental pollution and the security risk of fire occurs；
4) under water operation when can directly from surrounding fetch water, without outputting and inputting hydraulic oil from ground by hydraulic line.
Three) it can be used directly as pneumatic cylinder without piston pressure cylinder, to provide more flexibilities in the application.
Description of the drawings
Figure 1A is sectional view when being individually in original state by ship part；
Figure 1B is sectional view when being individually in stress by ship part；
Fig. 2A is the sectional view of the scalable unit of single flexible of the utility model embodiment 1；
Fig. 2 B are the section view of the totally-enclosed pressure cavity using the scalable unit of single flexible of the utility model embodiment 1
Figure；
Fig. 2 C are that the utility model embodiment 1 uses the pressure cylinder of the scalable unit of single flexible in the section view of original state
Figure；
Fig. 2 D are the A-A ' cut-away views of Fig. 2 C；
Fig. 2 E are that the utility model embodiment 1 uses the pressure cylinder of the scalable unit of single flexible in low internal pressure advanced state
Under sectional view；
Fig. 2 F are that the utility model embodiment 1 uses the pressure cylinder of the scalable unit of single flexible in high internal pressure advanced state
Under sectional view；
Fig. 3 A are sectional view of the utility model embodiment 1 using two series connection flexible expandable units；
Fig. 3 B are cuing open for the totally-enclosed pressure cavity that the utility model embodiment 1 uses two series connection flexible expandable units
View；
Fig. 3 C are that the utility model embodiment 1 uses the pressure cylinder of two series connection flexible expandable units under advanced state
Sectional view；
Fig. 4 A are the sectional view of the I type pressure cylinder flexible expandable units of the utility model embodiment 2；
Fig. 4 B are in sectional view when original state for the I type pressure cylinders of the utility model embodiment 2；
Fig. 4 C are in sectional view when maximum stroke state for the I type pressure cylinders of the utility model embodiment 2；
Fig. 5 A are the sectional view of the II type pressure cylinder flexible expandable unit of the utility model embodiment 2；
Fig. 5 B are that the II type pressure cylinder of the utility model embodiment 2 is in the sectional view under advanced state；
Fig. 6 is to be modified to the cut-away view of single-stroke hydraulic cylinder after the utility model increases reset tension spring.
In figure：
101, outer steel sleeve cylinder, 102, interior steel bushing, 103, rubber tube；
210, outer shell sleeve, 211, position limiting structure, 212, plastics inner sleeve；
220, totally-enclosed pressure cavity；
221, flexible expandable unit, 2211, preceding outer sleeve, 2212, rear outer sleeve, 2213, inner sleeve, 2214, annular
Fixture block, 2215, preceding rubber ring, 2216, rear rubber ring, 2217, circular weld, 2218, preceding fixed ring, 2219, rear fixed ring,
222, back cylinder cover, 223, preceding top, 224, totally-enclosed pressure chamber, 230, working media inlet and outlet nozzle；240, reset tension spring；
310, outer shell sleeve, 311, position limiting structure, 312, plastics inner sleeve；320, flexible expandable unit, 321, preceding outer
Sleeve, 322, rear outer sleeve, 323, inner sleeve, 324, ring-like clamping plate, 3241, outer sleeve, 325, preceding rubber ring, 326, rear rubber
Ring, 327, rear fixed ring, 328, preceding fixed ring；330, back cylinder cover, 340, totally-enclosed pressure chamber, 350, working media inlet/outlet pipe
Mouthful, 360, plastic outer sleeve；370, preceding sealing cover, 380, preceding top.
Specific implementation mode
For that can further appreciate that the invention, features and effects of the utility model, the following examples are hereby given, and coordinates
Detailed description are as follows for attached drawing：
Attached drawing, a kind of hermetically sealed no piston pressure cylinder are please referred to, the utility model is contemplated that：Using flexible expandable
Totally-enclosed pressure cavity realizes the direct conversion of hydraulic energy or air pressure and mechanical kinetic energy, from structurally saving piston, piston rod
And sealing ring.
The technical solution used for：A kind of hermetically sealed no piston pressure cylinder, including outer shell sleeve and flexible expandable are complete
Confining pressure cavity；The totally-enclosed pressure cavity includes at least one flexible expandable unit, preceding seal member and rear sealing
Component.
The flexible expandable unit includes preceding outer sleeve and rear outer sleeve, in the preceding outer sleeve and the rear outer sleeve
Be internally provided with a coaxial and shorter inner sleeve, be connected in the outer middle side part of the inner sleeve it is ring-like by clamp assembly,
The preceding rubber ring affixed with them is equipped between the preceding outer sleeve and the inner sleeve, in the rear outer sleeve and the inner sleeve
Cylinder between be equipped with the rear rubber ring affixed with them, the preceding rubber ring and it is described after rubber ring be separately positioned on it is described it is ring-like by
The both sides of clamp assembly；Outer sleeve and the rear rubber annular are at the rear pressure chamber of flexible expandable, the preceding outer sleeve after described
Pass through the inner sleeve at the preceding pressure chamber of flexible expandable, the preceding pressure chamber and the rear pressure chamber with the preceding rubber annular
Cylinder connection.
The preceding seal member and it is described after seal member by the preceding pressure chamber of all flexible expandable units and after
Pressure chamber is sealed to flexible expandable, totally-enclosed pressure chamber without relative motion contact surface；The totally-enclosed pressure chamber
It is connect with working media inlet and outlet nozzle.
The totally-enclosed pressure cavity is slideably inserted into the outer shell sleeve, in the front end of the outer shell sleeve
Side is equipped with position limiting structure, and the rear end of the outer shell sleeve and the rear seal member are affixed.
Embodiment 1：
Please refer to Fig. 2A~Fig. 2 F and Fig. 3 A~Fig. 3 C, a kind of hermetically sealed no piston pressure cylinder, including outer shell sleeve 210
With the totally-enclosed pressure cavity 220 of flexible expandable.
In the present embodiment, described ring-like by the thicker ring-like fixture block 2214 of clamp assembly use, the preceding seal member is
Preceding top 223, the rear seal member is back cylinder cover 222.
The totally-enclosed pressure cavity 220 is using back cylinder cover 222, preceding top 223 and at least one flexible expandable list
What member 221 was constituted.
The flexible expandable unit 221 includes preceding outer sleeve 2211 side by side and rear outer sleeve 2212, described preceding outer
Sleeve 2211 and it is described after outer sleeve 2212 be internally provided with an inner sleeve 2213 coaxial with them, in the inner sleeve
2213 outer middle side part is connected with annular fixture block 2214, between the preceding outer sleeve 2211 and the inner sleeve 2213 be equipped with
They vulcanize affixed preceding rubber ring 2215, are equipped with and their sulphur between outer sleeve 2212 and the inner sleeve 2213 in the rear
Change affixed rear rubber ring 2216, the preceding rubber ring 2215 and the rear rubber ring 2216 are separately positioned on the annular fixture block
Rubber ring after 2214 both sides, the inner sleeve 2213 and the annular fixture block 2214 are the preceding rubber rings 2215 and are described
The deformation guide member of 2216 follow-up unit and the preceding rubber ring 2215 and the rear rubber ring 2216.After described
The scalable ring shaped slot that outer sleeve 2212 and the inner sleeve 2213 and the annular fixture block 2214 are formed constitutes the rear rubber
The deformation guiding groove of rubber ring 2216, by the preceding outer sleeve 2211 and the inner sleeve 2213 and 2214 shape of the annular fixture block
At scalable ring shaped slot constitute the deformation guiding groove of the preceding rubber ring 2215, in the rear the inside of outer sleeve 2212,
The rear of rubber ring 2216 is formed with the rear pressure chamber of flexible expandable after described, the inside of the preceding outer sleeve 2211,
The front of the preceding rubber ring 2215 is formed with the preceding pressure chamber of flexible expandable, and the preceding pressure chamber and the rear pressure chamber are logical
Cross the connection of the inner sleeve 2213.
Fig. 2 B are referred to, when the totally-enclosed pressure cavity 220 is using a flexible expandable unit 221, described one
The rear end of the rear outer sleeve 2212 of a flexible expandable unit 221 and the front end face of the back cylinder cover 222 are affixed, one soft
The rear end of the inner sleeve 2213 of the scalable unit of property 221 is detached with the front end face of the back cylinder cover 222, and one flexibility can stretch
The front end of the preceding outer sleeve 2211 of contracting unit 221 and the rear end of the preceding top 223 are affixed, one flexible expandable unit
The front end of 221 inner sleeve 2213 is detached with the rear end of the preceding top 223, before one flexible expandable unit 221
Pressure chamber and rear pressure chamber constitute flexible expandable, totally-enclosed pressure chamber 224 without relative motion contact surface.
Fig. 3 B are referred to, when the totally-enclosed pressure cavity 220 uses at least two flexible expandable units 221
When, all flexible expandable units 221 are connected, wherein two adjacent flexible expandable units 221, posterior flexibility can
The rear outer sleeve 2212 of the preceding outer sleeve 2211 of telescopic unit 221 and preceding flexible expandable unit is opposite to be welded, using ring
Shape weld seam 2217 connects, the inner sleeve of the inner sleeve 2213 of posterior flexible expandable unit and preceding flexible expandable unit
2213 separation；Front end positioned at the rear end and the back cylinder cover 222 of the rear outer sleeve 2212 of the flexible expandable unit of rearmost
Face sealing is affixed, is located at the front end of the rear end and the back cylinder cover 222 of the inner sleeve 2213 of the flexible expandable unit of rearmost
Face detaches；Rear end positioned at the front end and the preceding top 223 of the preceding outer sleeve 2211 of the flexible expandable unit of forefront is close
Sealing connects, and is detached with the rear end of the preceding top 223 positioned at the front end of the inner sleeve 2213 of the flexible expandable unit of forefront,
The preceding pressure chamber of all flexible expandable units 221 and rear pressure chamber constitute flexible expandable, contact without relative motion
The totally-enclosed pressure chamber 224 in face.The affixed form of above-mentioned sealing can be that welding can also be flanged joint.
The totally-enclosed pressure cavity 220 is inserted into the outer shell sleeve 210, the front end face of the back cylinder cover 222 with
The rear end of the outer shell sleeve 210 is affixed, and one concatenated flexibility of flexible expandable unit 221 or at least two can
Telescopic unit 221 and the preceding top 223 are slidably connected with the outer shell sleeve 210, in the front end of the outer shell sleeve 210
Inside is equipped with limited step 211, and the rear end of the totally-enclosed pressure chamber 224 is connect with working media inlet and outlet nozzle 230, the work
Make medium inlet and outlet nozzle 230 to be fixed on the outer shell sleeve 210.
Fig. 2A~2F is please referred to, it can only achieve using the maximum stroke of the pressure cylinder of a flexible expandable unit 221
The 20%~25% of length.Fig. 3 A~3C are please referred to, it is maximum when pressure cylinder uses two flexible expandable units 221
Stroke can reach 30% of its own length or so.Pressure cylinder can also use more than two flexible expandable units 221
Be connected in series with.
Above-mentioned annular fixture block 2214 can be rigid structure such as steel structure, can also use flexible structure such as according to demand
Plastics or hard rubber etc..Annular fixture block 2214 is fixed on the outer surface of inner sleeve 2213, with preceding rubber ring 2215 and rear rubber
Ring 2216 and preceding outer sleeve 2211 and rear outer sleeve 2212 are not connected to, and the trailing flank of preceding rubber ring 2215 is attached to annular in consistent manner
On the leading flank of fixture block 2214, the leading flank of rear rubber ring 2216 is attached in consistent manner on the trailing flank of annular fixture block 2214.In order to
It is deformed convenient for preceding rubber ring 2215 and rear rubber ring 2216, the trailing flank of the rear rubber ring 2216 and the preceding rubber
Annular concave curved surface can be used in the leading flank of ring 2215.
Fig. 6 is referred to, by taking the pressure cylinder using a flexible expandable unit 221 as an example, in order to enhance returning for pressure cylinder
Reset tension spring 240 is arranged between cylinder cap 222 and the preceding top 223 in the rear in Cheng Nengli.The backhaul restoring force of the pressure cylinder
Derived from two aspects：1) restoring force that reset tension spring 240 provides；2) during pushing ahead, preceding rubber ring 2215 and rear rubber
Rubber ring 2216 is stored in its internal elastic-restoring force due to stretching.Similarly, at least two flexible expandable units are being used
Reset tension spring 240 can also be equally set in 221 pressure cylinder.
In order to enhance the 2216 fixed fastness in outside of preceding rubber ring 2215 and rear rubber ring, in the preceding rubber ring 2215
Front side be equipped with preceding fixed ring 2218,2218 inner surface of preceding fixed ring and 2211 inner wall surface of preceding outer sleeve and institute
Rubber ring 2215 vulcanizes affixed before stating, and the rear side of rubber ring 2216 is equipped with rear fixed ring 2219, the rear fixed ring in the rear
2219 inner surfaces vulcanize affixed with rear 2212 inner wall surface of outer sleeve and the rear rubber ring 2216.More specifically, institute
Fixed ring 2218 and the rear fixed ring 2219 are all made of steel loop, the outside of the preceding fixed ring 2218 and the preceding housing before stating
The inner wall of cylinder 2211 is affixed, the rear side of the preceding fixed ring 2218 and 2215 bonding by Vulcanization of preceding rubber ring；It is fixed after described
The inner wall of the outside of ring 2219 and the rear outer sleeve 2212 is affixed, rear side and the rear rubber ring of the rear fixed ring 2219
2216 bonding by Vulcanization.Similarly, the preceding outer sleeve 2211 and the rear outer sleeve 2212 use steel bushing, the preceding rubber ring
2215 distinguish bonding by Vulcanization with the preceding outer sleeve 2211 and 2213 outer surface of the inner sleeve；Rubber ring 2216 and institute after described
State rear outer sleeve 2212 and 2213 outer surface of inner sleeve difference bonding by Vulcanization.
Without piston pressure cylinder using the totally-enclosed pressure cavity 220 of no relative motion contact surface described in the present embodiment, by phase
Moving contact face is arranged in the outside of totally-enclosed pressure cavity 220.Relative motion in 220 outside of totally-enclosed pressure cavity connects
Contacting surface also needs the problem of considering how to reduce contact surface friction coefficient.In order to reduce the friction coefficient of contact surface, Ke Yi
Fixed plastics inner sleeve 212 on the inner wall of the outer shell sleeve 210, the plastics inner sleeve 212 are arranged in the outer shell sleeve
210 are slidably matched on face.Superhigh molecular weight polyethylene material (" UHMWPE " both Ultra- may be used in plastics inner sleeve 212
High Molecular Weight PE, also known as PE plates) reduce contact surface friction coefficient.This plastics have and its excellent
Performance, and belong to moderate, function admirable thermoplastic engineering plastic.It has almost concentrated the excellent of various plastics
Point, with common polythene and the unrivaled wear-resisting, impact resistance of other engineering plastics, self-lubricating and under various environment
Low-friction coefficient, it is corrosion-resistant, absorb impact energy, be low temperature resistant, nontoxic, being not easy to adhere to, the performances such as not hygroscopic, density is smaller.For
Further reduce the friction coefficient of contact surface, can on the medial surface of the plastics inner sleeve 212 brushing lubricating oil,
Form lube layer.
The operation principle of the present embodiment：
Fig. 2 E are referred to, by taking the pressure cylinder using a flexible expandable unit 221 as an example, when pressure cylinder is in low internal pressure
When advanced state, preceding rubber ring 2215 and rear rubber ring 2216 generated under interior pressure preliminary Free Transform (with it is shown in fig. 2 C
State is compared).It is pushed ahead under the driving of internal pressure preceding top 223.Due to preceding rubber ring 2215 and rear rubber ring 2216
Start to generate deformation in the same size but opposite direction under the driving of low internal pressure, therefore the two is caused to act on annular fixture block
The power direction equal in magnitude of 2214 both sides is on the contrary, so that cancel out each other.Under this deformation state, preceding rubber ring 2215 and rear rubber
Rubber ring 2216 is all in the stress based on shearing force, and in this state, their deformation has substantial connection with its thickness.
When thickness reduces, they can generate larger deformation under conditions of low internal pressure, but 2215 He of current rubber ring
The thickness of rubber ring 2216 becomes hour afterwards, and when pressure cylinder promotes, the finite energy that they can be stored has in return stroke
Enough restoring forces may not be provided.Only is requiring low to backhaul restoring force or institute can be obtained by other methods
In the case of needing backhaul restoring force, their thickness can be just reduced.
All there are one common characteristics for rubber and water, are exactly that under pressure, volume is incompressible.Current rubber
Ring 2215 and rear rubber ring 2216 generate guiding according to the design of totally-enclosed pressure chamber 224 and deform and be attached at annular completely
After on the both sides of fixture block 2214 and the inner wall surface of preceding outer sleeve 2211 and rear outer sleeve 2212, no piston described in the utility model
For pressure cylinder as conventional cylinder, the volume change of totally-enclosed pressure cavity is unrelated with interior pressure, only with injection working media
Volume it is related, therefore 223 displacements pushed ahead of top before positive displacement pump capable of being used to accurately control.
Fig. 2 F are please referred to, pressure cylinder is in high internal pressure advanced state.Preceding rubber ring 2215 and rear rubber ring 2216 are in height
Guiding deformation is respectively completed under pressure effect, under the guiding of 224 internal structure of totally-enclosed pressure chamber (with state phase shown in Fig. 2 C
Than).Preceding top 223 is pushed ahead under the driving of internal pressure, at the same internal pressure due to injection liquid capacity increase and
Correspondingly increase.Preceding rubber ring 2215 and rear rubber ring 2216 start to generate moderate finite deformation under the driving of high internal pressure, paste completely
It invests in both sides and the inner wall surface of preceding outer sleeve 2211 and rear outer sleeve 2212 of annular fixture block 2214.In this deformation state
Under, preceding rubber ring 2215 and rear rubber ring 2216 are all in the stress based on normal pressure, and the anti-pressure ability of rubber is very
By force, and it is unrelated with its thickness, therefore the maximum anti-pressure ability without piston pressure cylinder is by preceding outer sleeve 2211 and rear outer sleeve 2212
Anti-pressure ability determine, and 2212 generally use steel sleeve of preceding outer sleeve 2211 and rear outer sleeve, therefore without piston pressure cylinder
Maximum anti-pressure ability and the maximum anti-pressure ability of conventional cylinder or conventional pneumatic cylinder it is essentially identical.At no piston pressure cylinder
When high internal pressure advanced state, preceding fixed ring 2218 and rear fixed ring 2219 are in tension state, preceding rubber ring 2215 and rear rubber
Rubber ring 2216 is also stretched, but rubber has good stretch characteristics, it allow generally for the stretching of length 500% and
Will not be damaged, preceding rubber ring 2215 and rear rubber ring 2216 generated stretching length in the state that pressure cylinder is in maximum stroke
Degree is significantly lower than this stretching permissible value.
In conclusion there is three big features described in the present embodiment in structure design without piston pressure cylinder：
One) the excellent telescopicing performance of the adhesion of rubber to metal technology of existing maturation and rubber is utilized so that pressure cylinder
Totally-enclosed pressure cavity itself has Telescopic, and realizes the totally-enclosed of cavity, to eliminate to piston, piston rod,
The demand of sealing ring, and then make the working media of pressure cylinder that light water or air may be used.
Two) all rubbing surfaces with relative motion are all designed in the outside of totally-enclosed pressure cavity.
Three) guiding deformation design is utilized so that the preceding rubber ring 2215 in totally-enclosed pressure cavity and rear rubber ring
2216 are deformed by preset structure, to which the major part of the whole of shear stress in rubber ring body and tensile stress to be changed into just
Compression makes its anti-pressure ability and preceding outer sleeve 2211 and rear housing to which the anti-pressure ability of rubber ring be significantly increased
Cylinder 2212 is consistent.
There are four types of common applications for conventional cylinder：Submerged applications are applied, as pneumatic cylinder as single-stroke hydraulic cylinder
Using and as two-stroke hydraulic cylinder application.Below for these four applications, by no piston pressure cylinder described in the utility model
It is compared with conventional cylinder.
One) submerged applications
No piston pressure cylinder is using seawater as working media under water in application, having a clear superiority than conventional cylinder.
First, the application of no piston pressure cylinder is unrelated with the depth of water.Under water before use, on the pipeline of working media inlet and outlet nozzle 230
Emptying valve is set, in-cylinder pressure can be made consistent with the pressure of surrounding seawater after opening, before propulsion, which is closed
It closes.When needing backhaul, the high pressure sea water in the emptying valve release cylinder being directly connected to external seawater, entire backhaul need to be only opened
It can be automatically performed, to make no piston pressure cylinder be returned to original state.Emptying valve is closed again after returning to original state
It closes, is promoted next time in case being pumped into seawater.
No piston pressure cylinder is under water in application, restoring force is derived from two factors：1) seawater in totally-enclosed pressure cavity
Pressure is more than the seawater pressure outside cylinder body, emptying valve open after in cylinder high pressure sea water can flow out automatically it is flat to reach pressure
Weighing apparatus；2) the caoutchouc elasticity restoring force being stored in during pushing ahead in 2216 body of preceding rubber ring 2215 and rear rubber ring.
Two) without piston pressure cylinder as pneumatic cylinder application
What the sealing ring of conventional pneumatic cylinder still needed hydraulic oil to lubricate.So conventional pneumatic cylinder generally use hydraulic pressure and
Air pressure hybrid system：Sealing ring is lubricated with hydraulic oil, then propulsion and backhaul are completed with air pressure on hydraulic basis.
Application is most simple by land and direct mode is exactly for being pneumatically for no piston pressure cylinder described in the utility model
System.Using Open architecture, air-outlet valve is set on the pipeline of working media inlet and outlet nozzle 230 and suppresses valve, utilizes sky
Press air-breathing in air, is directly vented by air-outlet valve, need not configure pressure gas source and gas transmission line in air.
Since no piston pressure cylinder uses totally-enclosed pressure cavity, without sealing ring, uses, can be improved as pneumatic cylinder
Overall security, reliability and the task performance of baric systerm may be used air compressor machine and provide working media, with conventional pneumatic cylinder
It compares, has a clear superiority.
Three) it is used as single-stroke hydraulic cylinder application
When hydraulic cylinder is of less demanding to backhaul displacement accuracy, single-stroke hydraulic cylinder can be used in conventional cylinder.Single-stroke
There is usually one working media inlet and outlet nozzles for hydraulic cylinder.The restoring force of traditional single-stroke hydraulic cylinder backhaul is usually all by cylinder body
The spring of interior installation is completed.
When there are requirements at the higher level to restoring force such as no piston pressure cylinder described in the utility model, reset tension spring can also be installed additional
240, it is modified to single-stroke hydraulic cylinder, refers to Fig. 6.
Four) it is used as two-stroke hydraulic cylinder application
Traditional two-stroke hydraulic cylinder generally use positive displacement pump is controlled, maximum feature be to flow transmit into
Row is unrelated with in-cylinder pressure to be accurately controlled.Since piston is mounted with sealing ring, it is therefore desirable to two closed hydraulic fluid chambers,
One is completed progradation by the accurate injection of hydraulic oil, another completes hydraulic cylinder by the accurate injection of hydraulic oil
Recovery Process.Generally conventional two-stroke hydraulic cylinder does not allow to realize backhaul using the method for extracting hydraulic oil isometric(al) out,
To avoid generating very high pulsed negative pressure in cylinder body.And optimal without piston pressure cylinder described in the present embodiment mating it is
Rotary displacement pump, it is only necessary to which a working media inlet and outlet nozzle, when propulsion, positive displacement pump is rotated in the forward direction work from inlet and outlet nozzle
Medium isometric(al) injects；In backhaul, positive displacement pump reverse rotation is extracted out from the same inlet and outlet nozzle by working media isometric(al).It is comprehensive
Upper described, this can be used without piston pressure cylinder as hydraulic cylinder, and the hydraulic cylinder can transmit work by rotary displacement pump
Make medium, specific working mode is：The rotary displacement pump rotates in the forward direction in the hydraulic cylinder progradation is situated between work
Matter injects the totally-enclosed pressure chamber, reversely rotated in the hydraulic cylinder return stroke working media is extracted out it is described totally-enclosed
Pressure chamber.
Described in the present embodiment without piston pressure cylinder and the double fliud flushing cylinder pressures of tradition have in structure following three it is significantly different it
Place：1) totally-enclosed pressure cavity, hermetically sealed, no sealing ring are used；2) totally-enclosed pressure cavity is flexible, and is not rigid；
3) it is equipped with the initial space of storage liquid in totally-enclosed pressure cavity and continues to keep certain fluid storage, can avoid
There is the high negative pressure of pulsed when extracting working media in backhaul out.Therefore, no piston pressure cylinder backhaul profit described in the utility model
It is feasible with positive displacement pump reversion pumpback.
Embodiment 2：
Please refer to Fig. 4 A~Fig. 4 C and Fig. 5 A~Fig. 5 B, a kind of hermetically sealed no piston pressure cylinder of stroke extended type, including
The totally-enclosed pressure cavity of outer shell sleeve 310 and a flexible expandable.
The totally-enclosed pressure cavity of the flexible expandable of the present embodiment is slightly different with embodiment 1.In the present embodiment,
It is described it is ring-like by clamp assembly use relatively thin ring-like clamping plate 324, the preceding seal member be 380 or preceding sealing covers 370 of preceding top,
Seal member is back cylinder cover 330 after described.
The totally-enclosed pressure cavity is to use back cylinder cover 330, preceding seal member and 320 structure of flexible expandable unit
At.
The flexible expandable unit 320 includes preceding outer sleeve 321 and rear outer sleeve 322, the preceding outer sleeve 321 and institute
Rear outer sleeve 322 is stated separate using ring-like clamping plate 324, the preceding outer sleeve 321 and it is described after outer sleeve 322 be internally provided with
The middle part outside of an inner sleeve 323 coaxial with them, the inner sleeve 323 is affixed with the inside of the ring-like clamping plate 324,
The preceding rubber ring 325 affixed with them is equipped between the preceding outer sleeve 321 and the inner sleeve 323, in the rear housing
The rear rubber ring 326 affixed with them, the preceding rubber ring 325 and the rear rubber are equipped between cylinder 322 and the inner sleeve 323
Rubber ring 326 is separately positioned on the both sides of the ring-like clamping plate 324.It is formed at the rear of the ring-like clamping plate 324 telescopic
Rubber annular strain guiding groove afterwards is formed with telescopic preceding rubber annular strain guiding groove in the front of the ring-like clamping plate 324.Institute
State rear outer sleeve 322 and it is described after rubber ring 326 form the rear pressure chamber of flexible expandable, the preceding outer sleeve 321 and described
Preceding rubber ring 325 forms the preceding pressure chamber of flexible expandable, and the preceding pressure chamber and the rear pressure chamber pass through the inner sleeve
323 connections.
The back cylinder cover 330 and the back-end sealing of the rear outer sleeve 322 are affixed, and the preceding seal member is fixed in described
On preceding outer sleeve 321, the preceding seal member is located at the front of the preceding rubber ring 325, the inner sleeve 323 with it is described preceding close
Envelope component and the back cylinder cover 330 be separation, the preceding pressure chamber and it is described after pressure chamber constitute flexible expandable, without phase
To the totally-enclosed pressure chamber 340 in moving contact face.
The totally-enclosed pressure cavity is inserted into the outer shell sleeve 310, the front end face of the back cylinder cover 330 with it is described
The rear end of outer shell sleeve 310 is affixed, and the flexible expandable unit 320 is slidably connected with the outer shell sleeve 310, described outer
The leading inside of cylinder sleeve 310 is equipped with position limiting structure 311, is connected on cylinder cap 330 in the rear and the totally-enclosed pressure chamber
The working media inlet and outlet nozzle 350 of 340 connections.
Refering to Fig. 4 A~4C, I type pressure cylinders are used as the preceding seal member, the preceding sealing cover using preceding sealing cover 370
370 sealings are fixed in inside the preceding outer sleeve 321.For preceding sealing cover 370 using oval spherical cap structure, concave surface is facing forward.I type pressures
The maximum stroke of power cylinder can reach 65% of its own length or so.
Fig. 5 A~5B are please referred to, II type pressure cylinder is used as preceding seal member, maximum stroke that can reach using preceding top 380
To 50% or so of its own length.The ring-like clamping plate 324 is equipped with outer sleeve 3241, the outer sleeve 3241 of the ring-like clamping plate
It is slidably disposed between the outer shell sleeve 310 and the preceding outer sleeve 321 and the rear outer sleeve 322.
Above-mentioned ring-like clamping plate 324 can be rigid structure such as steel structure, can also use flexible structure such as according to demand
Plastics or hard rubber etc..Ring-like clamping plate 324 is fixed on the outer surface of inner sleeve 323, with preceding rubber ring 325 and rear rubber ring
326 and preceding outer sleeve 321 and rear outer sleeve 322 be not connected to, before the trailing flank of preceding rubber ring 325 is attached to ring-like clamping plate 324
On side, the leading flank of rear rubber ring 326 is attached on the trailing flank of ring-like clamping plate 324.
It is same as Example 1, the trailing flank of the rear rubber ring 326 and the leading flank of the preceding rubber ring 325
Annular concave curved surface can be used；It is equipped with preceding fixed ring 328 in the front side of the preceding rubber ring 325, in the rear rubber ring 326
Rear side is equipped with rear fixed ring 327, and the connection type of preceding fixed ring 328 and rear fixed ring 327 is same as Example 1.
Fig. 5 A~Fig. 5 B are please referred to, are set on the end face of annular clamping plate 324 in preceding outer sleeve 321 and rear outer sleeve 322
There are groove, preceding rubber ring 325 and the inner surface of preceding outer sleeve 321, the trailing flank of preceding fixed ring 328 and preceding outer sleeve 321
Slope surface distinguishes bonding by Vulcanization afterwards, similarly, rear rubber ring 326 and the inner surface of rear outer sleeve 322, the front side of rear fixed ring 327
The preceding slope surface of face and rear outer sleeve 322 distinguishes bonding by Vulcanization.
In order to reduce the friction coefficient of contact surface, can on the inner wall of the outer shell sleeve 310 fixed plastics inner sleeve
312, it is connected with plastic outer sleeve 360 on the face that is slidably matched of the preceding outer sleeve 321 or its preceding seal member.Plastics inner sleeve
Superhigh molecular weight polyethylene material may be used in pipe 312 and plastic outer sleeve 360.In order to further reduce rubbing for contact surface
Coefficient is wiped, can be brushed on the inner surface of the plastics inner sleeve 312 or on the outer surface of the plastic outer sleeve 360
Lubricating oil forms lube layer.
Fig. 4 C are referred to, during I type pressure cylinder promotes, interior pressure is by preceding rubber ring 325 and rear rubber ring 326
Stress by shearing force from being changed to by the stress for adding limited positive pulling force based on normal pressure originally.In I type pressure
When power cylinder reaches maximum stroke, interior pressure squeezes preceding rubber ring 325 and rear rubber ring 326 to plastics inner sleeve 312, internal pressure
Power is transmitted to the inner surface of outer shell sleeve 310 by plastics inner sleeve 312, therefore uses this structure, needs outer shell sleeve
310 are designed as bearing the component of pressure.Fig. 5 B are referred to, annular clamping plate 324 is equipped with outer sleeve 3241, when annular clamping plate 324 is adopted
When with rigid structure, the inner surface of outer shell sleeve 310 is not subject to pressure, and pressure is held by 3241 inner surface of outer sleeve of annular clamping plate
By；When annular clamping plate 324 is using flexible structure, pressure is born by the inner surface of outer shell sleeve 310.
Current rubber ring 325 and rear rubber ring 326 generate guiding deformation according to the design of totally-enclosed pressure chamber 340 simultaneously
When attaching on a rigid structure completely, no piston pressure cylinder described in the utility model is as conventional cylinder, totally-enclosed pressure
The volume change of cavity is unrelated with interior pressure, only related with the injection volume of working media, therefore positive displacement pump can be used accurate
The output displacement of control pressure cylinder.
The present embodiment has the characteristics that and embodiment 1 identical three is big and applies upper advantage.
In conclusion no piston pressure cylinder described in the utility model, which not only has, converts hydraulic energy or air pressure to machinery
The structure of kinetic energy also has the position limiting structure for being oriented to control structure and maximum stroke；Maximum stroke can connect with conventional cylinder
Closely；The anti-pressure ability of hydraulic cylinder depends on the anti-pressure ability of preceding outer sleeve and rear outer sleeve, and without being bound by preceding rubber ring with after
The anti-pressure ability of rubber ring, therefore most conventional cylinders and pneumatic cylinder can be replaced, and apply under water and air pressure transmission
In the application in dynamic field, has and be substantially better than conventional cylinder and the characteristic of pneumatic cylinder.
Although the preferred embodiment of the utility model is described above in conjunction with attached drawing, the utility model is not
It is confined to above-mentioned specific implementation mode, the above mentioned embodiment is only schematical, is not restrictive, ability
The those of ordinary skill in domain is not departing from the utility model aims and claimed under the enlightenment of the utility model
In the case of range, many forms can also be made, these are belonged within the scope of protection of the utility model.
Claims (17)
1. a kind of hermetically sealed no piston pressure cylinder, which is characterized in that the totally-enclosed pressure including outer shell sleeve and flexible expandable
Cavity；The totally-enclosed pressure cavity includes at least one flexible expandable unit, preceding seal member and rear seal member；
The flexible expandable unit includes preceding outer sleeve and rear outer sleeve, in the preceding outer sleeve and the rear outer sleeve
Portion be equipped with a coaxial and shorter inner sleeve, be connected in the outer middle side part of the inner sleeve it is ring-like by clamp assembly, described
The preceding rubber ring affixed with them is equipped between preceding outer sleeve and the inner sleeve, in the rear outer sleeve and the inner sleeve it
Between be equipped with the rear rubber ring affixed with them, the preceding rubber ring and it is described after rubber ring be separately positioned on it is described ring-like by folder portion
The both sides of part；After described outer sleeve and it is described after rubber annular at the rear pressure chamber of flexible expandable, the preceding outer sleeve and institute
At the preceding pressure chamber of flexible expandable, the preceding pressure chamber and the rear pressure chamber are connected rubber annular by the inner sleeve before stating
It connects；
The preceding seal member and it is described after seal member by the preceding pressure chamber of all flexible expandable units and rear pressure
Chamber is sealed to flexible expandable, totally-enclosed pressure chamber without relative motion contact surface；The totally-enclosed pressure chamber and work
Make the connection of medium inlet and outlet nozzle；
The totally-enclosed pressure cavity is slideably inserted into the outer shell sleeve, is set in the leading inside of the outer shell sleeve
There are position limiting structure, the rear end of the outer shell sleeve and the rear seal member affixed.
2. hermetically sealed no piston pressure cylinder according to claim 1, which is characterized in that outside the totally-enclosed pressure cavity
And in the outer shell sleeve between with relative motion contact surface on friction reducing device is installed.
3. hermetically sealed no piston pressure cylinder according to claim 1, which is characterized in that it is described it is ring-like by clamp assembly be it is ring-like
Fixture block；The preceding outer sleeve and the rear outer sleeve are set up in parallel, by the rear outer sleeve and the inner sleeve and the ring
Rubber annular strain guiding groove after type is constituted by the scalable ring shaped slot that clamp assembly is formed, by the preceding outer sleeve and the inner sleeve
And the ring-like scalable ring shaped slot formed by clamp assembly constitutes the deformation guiding groove of preceding rubber ring, the rear pressure chamber position
In the rear of the rear rubber ring, the inside of the rear outer sleeve, the preceding pressure chamber is located at the front of the preceding rubber ring, institute
The inside of outer sleeve before stating.
4. hermetically sealed no piston pressure cylinder according to claim 3, which is characterized in that the totally-enclosed pressure cavity uses
One flexible expandable unit, the preceding seal member are preceding top, and the rear seal member is back cylinder cover, one flexibility
The rear end of the rear outer sleeve of scalable unit and the front end face of the back cylinder cover seal affixed, one flexible expandable unit
Preceding outer sleeve front end and the preceding top back-end sealing it is affixed, the preceding pressure chamber of one flexible expandable unit and
Pressure chamber constitutes the totally-enclosed pressure chamber afterwards.
5. hermetically sealed no piston pressure cylinder according to claim 3, which is characterized in that the totally-enclosed pressure cavity includes
At least two flexible expandable units, the preceding seal member are preceding top, and the rear seal member is back cylinder cover, all described
Flexible expandable unit is connected, wherein two adjacent flexible expandable units, the preceding housing of posterior flexible expandable unit
The rear outer sleeve of cylinder and preceding flexible expandable unit is opposite to be welded；Positioned at the rear housing of the flexible expandable unit of rearmost
Rear end and the back cylinder cover sealing of cylinder are affixed, positioned at the flexible expandable unit of forefront preceding outer sleeve front end with it is described
Preceding top sealing is affixed, and the preceding pressure chamber of all flexible expandable units and rear pressure chamber constitute the totally-enclosed pressure
Chamber.
6. hermetically sealed no piston pressure cylinder according to claim 1, which is characterized in that the totally-enclosed pressure cavity uses
One flexible expandable unit, it is described it is ring-like by clamp assembly be ring-like clamping plate, the preceding outer sleeve and it is described after outer sleeve by institute
It states ring-like clamping plate to separate, telescopic rear rubber annular strain guiding groove is formed at the rear of the ring-like clamping plate, in the ring
Telescopic preceding rubber annular strain guiding groove is formed in front of type clamping plate.
7. hermetically sealed no piston pressure cylinder according to claim 6, which is characterized in that seal member is rear cylinder after described
Lid, the preceding seal member are preceding sealing cover, and the preceding seal cap sealing is fixed in inside the preceding outer sleeve, the back cylinder cover
Affixed with the back-end sealing of the rear outer sleeve, the preceding pressure chamber and the rear pressure chamber constitute the totally-enclosed pressure chamber.
8. hermetically sealed no piston pressure cylinder according to claim 6, which is characterized in that seal member is rear cylinder after described
Lid, the preceding seal member are preceding top, and the ring-like clamping plate is equipped with outer sleeve, and the outer sleeve of the ring-like clamping plate is slideably
Setting is between the outer shell sleeve and the preceding outer sleeve and the rear outer sleeve；The rear end come directly towards before described with it is described preceding outer
The forward end seal of sleeve is affixed, and the front end face of the back cylinder cover and the back-end sealing of the rear outer sleeve are affixed, the preceding pressure
Chamber and the rear pressure chamber constitute the totally-enclosed pressure chamber.
9. hermetically sealed no piston pressure cylinder according to claim 1, which is characterized in that in the preceding seal member and described
Reset tension spring is equipped between seal member afterwards.
10. hermetically sealed no piston pressure cylinder according to claim 1, which is characterized in that the trailing flank of rubber ring after described
And the leading flank of the preceding rubber ring is all made of annular concave curved surface.
11. hermetically sealed no piston pressure cylinder according to claim 1, which is characterized in that in the front side of the preceding rubber ring
Equipped with preceding fixed ring, the preceding fixed ring distinguishes bonding by Vulcanization with the preceding outer sleeve inner surface and the preceding rubber ring, in institute
The rear side for stating rear rubber ring is equipped with rear fixed ring, the rear fixed ring and the rear outer sleeve inner surface and the rear rubber ring point
Other bonding by Vulcanization；The preceding rubber ring distinguishes bonding by Vulcanization with the preceding outer sleeve and the inner sleeve；It is described after rubber ring with
Outer sleeve and the inner sleeve distinguish bonding by Vulcanization after described.
12. hermetically sealed no piston pressure cylinder according to claim 2, which is characterized in that the friction reducing device is plastic sheath
Cylinder.
13. the hermetically sealed no piston pressure cylinder according to claim 2 or 12, which is characterized in that the friction reducing device is to adopt
Made of superhigh molecular weight polyethylene material.
14. the hermetically sealed no work according to any one of claim 4, claim 5, claim 7 and claim 8
Fill in pressure cylinder, which is characterized in that the sealing is affixed for welding or flanged joint.
15. a kind of application system of hermetically sealed no piston pressure cylinder as described in claim 1, which is characterized in that this is without piston pressure
Power cylinder is used as hydraulic cylinder, and the hydraulic cylinder transmits working media by rotary displacement pump.
16. the application system of hermetically sealed no piston pressure cylinder according to claim 13, which is characterized in that the swinging
Positive displacement pump rotates in the forward direction in the hydraulic cylinder progradation injects the totally-enclosed pressure chamber by working media, in the hydraulic pressure
It is reversely rotated in cylinder return stroke and extracts working media out the totally-enclosed pressure chamber.
17. a kind of application system according to hermetically sealed no piston pressure cylinder as described in claim 1, which is characterized in that this is without piston
Pressure cylinder is used as pneumatic cylinder, and the pneumatic cylinder provides working media using air compressor machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820524554.5U CN208057576U (en) | 2018-04-13 | 2018-04-13 | Hermetically sealed no piston pressure cylinder and application system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820524554.5U CN208057576U (en) | 2018-04-13 | 2018-04-13 | Hermetically sealed no piston pressure cylinder and application system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208057576U true CN208057576U (en) | 2018-11-06 |
Family
ID=63985951
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820524554.5U Withdrawn - After Issue CN208057576U (en) | 2018-04-13 | 2018-04-13 | Hermetically sealed no piston pressure cylinder and application system |
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| CN (1) | CN208057576U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331800A (en) * | 2018-04-13 | 2018-07-27 | 天津熙盛科技发展有限公司 | Hermetically sealed no piston pressure cylinder and application method |
-
2018
- 2018-04-13 CN CN201820524554.5U patent/CN208057576U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331800A (en) * | 2018-04-13 | 2018-07-27 | 天津熙盛科技发展有限公司 | Hermetically sealed no piston pressure cylinder and application method |
| CN108331800B (en) * | 2018-04-13 | 2023-12-26 | 汉德森环保科技发展(天津)有限公司 | Full-sealing piston-free pressure cylinder and use method thereof |
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