CN109139601A - A kind of design method of the infinitely multistage fluid power piston of same central tube - Google Patents
A kind of design method of the infinitely multistage fluid power piston of same central tube Download PDFInfo
- Publication number
- CN109139601A CN109139601A CN201810965641.9A CN201810965641A CN109139601A CN 109139601 A CN109139601 A CN 109139601A CN 201810965641 A CN201810965641 A CN 201810965641A CN 109139601 A CN109139601 A CN 109139601A
- Authority
- CN
- China
- Prior art keywords
- piston
- central tube
- infinitely
- fluid power
- design method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1409—Characterised by the construction of the motor unit of the straight-cylinder type with two or more independently movable working pistons
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
- E21B33/134—Bridging plugs
Abstract
The invention discloses a kind of design methods of the infinitely multistage fluid power piston of same central tube, comprising the following steps: multiple pistons, fixed piston are sheathed on central tube simultaneously common center pipe；Screw thread between adjacent piston is connected；Fixed piston is threadedly coupled with limited cap；Quantity multiple pressure transmission holes corresponding with piston, fixed piston and lock groove are offered on central tube；Latch is accommodated and limits in limited cap inner cavity, latch is installed on the correspondence lock groove of central tube.It the composite can be widely applied on the hydraulic thrust mechanism for power, using same central tube, piston can unlimited plural serial stage, and do not reduce the effective active area of fluid power piston, to provide the thrust of multi-level piston superposition, meet the working thrust demand of downstream force mechanism.
Description
Technical field
The present invention relates to a kind of design methods of the infinitely multistage fluid power piston of same central tube.
Background technique
Rely on the workpiece of fluid pressure acting, it is often necessary to sufficiently large hydraulic thrust, packer in petroleum industry,
Bridge plug class tool is limited by outer diameter, interior latus rectum, operating pressure, hydraulic thrust plunger designs limited space, is needing larger push away
When power, the concatenated mode of multi-level piston is generally divided to two kinds: one is multi-level piston active area is equal, central tube passes through screw thread
Series connection；Another kind is using same central tube, and multi-level piston active area successively decreases step by step.Pipe screw thread concatenated mode in center is obvious
Reduce the intensity and reliability of central tube；The plunger designs mode that active area successively decreases step by step limits the series of piston,
The maximum thrust of multi-level piston offer is limited, while the variation of multi-level piston size is also not easy to industrial production.
Therefore, for the above status, there is an urgent need to develop a kind of design sides of the infinitely multistage fluid power piston of same central tube
Method, to overcome the shortcomings of in currently practical application.
Summary of the invention
The purpose of the present invention is to provide a kind of design method of the infinitely multistage fluid power piston of same central tube, the design sides
Method can be widely applied to on the hydraulic thrust mechanism for power, using same central tube, piston can unlimited plural serial stage, and
Do not reduce the effective active area of fluid power piston, to provide the thrust of multi-level piston superposition, meets the work of downstream force mechanism
Thrust requirements.
To achieve the above object, the invention provides the following technical scheme:
A kind of design method of the infinitely multistage fluid power piston of same central tube, comprising the following steps:
Multiple pistons, fixed piston are sheathed on central tube simultaneously common center pipe by S1；
S2 connects screw thread between adjacent piston；
Fixed piston is threadedly coupled by S3 with limited cap；
S4 offers quantity multiple pressure transmission holes corresponding with piston, fixed piston and lock groove on central tube；
S5 accommodates and limits latch in limited cap inner cavity, and latch is installed on the correspondence lock groove of central tube.
As a further solution of the present invention: in step sl, the piston is identical with the quantity of fixed piston.
As a further solution of the present invention: in step sl, between the piston and central tube, fixed piston and center
Sealing ring is mounted between pipe and piston.
As a further solution of the present invention: in step sl, the central tube is cylindrical tube.
As a further solution of the present invention: in step s 2, each piston working solution potential source is identical.
As a further solution of the present invention: in step s 5, the latch is that two semicircle steel annulus combine structure
At.
Compared with prior art, the beneficial effects of the present invention are:
1) central tube is same one integral piece, and easy to process, safety (tensile strength) and reliability are higher；
2) fixed piston, piston active area can carry out uniform sizes design without successively decreasing, and be convenient for volume production and assembly；
3) fixed piston, piston can unlimited multilevel design, can satisfy the work requirements of low-pressure, high thrust.
Detailed description of the invention
Fig. 1 is the cross-sectional view when present invention is completed in normal assembly.
In figure: 1- central tube, 2- piston, 3- fixed piston, 4- limited cap, 5- latch, 6- sealing ring, 7- pressure transmission hole,
8- lock groove.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, in the embodiment of the present invention, a kind of design method of the infinitely multistage fluid power piston of same central tube, packet
Include following steps:
Multiple pistons 2, fixed piston 3 are sheathed on central tube 1 simultaneously common center pipe 1 by S1；
S2 connects screw thread between adjacent piston 2, and active area, can be unlimited multistage without successively decreasing step by step；
Fixed piston 3 is threadedly coupled by S3 with limited cap 4；
S4 offers quantity multiple pressure transmission holes 7 corresponding with piston 2, fixed piston 3 and lock groove on central tube 1
8；
S5 accommodates and limits latch 5 in 4 inner cavity of limited cap, and latch 5 is installed on the correspondence lock groove 8 of central tube 1
On.
Further, in step sl, the piston 2 is identical with the quantity of fixed piston 3.
Further, in step sl, between the piston 2 and central tube 1, fixed piston 3 and central tube 1 and piston
Sealing ring 6 is mounted between 2.
Further, in step sl, the central tube 1 is cylindrical tube, i.e. each section of diameter of 1 outer circle of central tube is equal,
Allow the unlimited multilevel design of piston 2 and fixed piston 3 and assembly, and does not reduce piston effect area step by step.
Further, in step s 2, each 2 working solution potential source of piston is identical, when by interior high pressure, synchronization action,
Hydraulic thrust superposition, can provide biggish hydraulic thrust.
Further, in step s 5, the latch 5 is that two semicircle steel annulus combinations are constituted, and axial direction will be sent out
Raw displacement, must radially expand, and latch 5 has almost taken the whole circumference of lock groove 8, under conditions of expansion is limited, i.e.,
Make to bear high hydraulic coupling, is also not easy to shear lock groove 8 by force and axial displacement occurs with central tube 1.
Further, in step s 5, the limited cap 4 is located at the outside of latch 5, and the inner cavity of limited cap 4 limits
The radial dilatation of latch 5, so that latch 5 is axial to be subjected to displacement, so that fixed piston 3, limited cap 4, locking
Block 5 and the position of central tube 1 are relatively fixed.
The working principle of the invention is: hydraulic to the application of 1 inner cavity of central tube, this is hydraulic same through pressure transmission hole 7 on central tube 1
When be transmitted to piston 2 at different levels, on fixed piston 3, since 2 screw thread of piston is connected, using same hydraulic power source, thus the liquid generated
Thrust superposition is pressed, when being superimposed restraining force of the hydraulic thrust greater than constraint mechanism, concatenated 2 uplink synchronization of piston is downstream
Force mechanism provides enough hydraulic thrusts, since 2 screw thread of piston is connected, uses same hydraulic power source, the hydraulic thrust of generation
Superposition, thus can be under conditions of hydraulic power source pressure is limited, easily by increasing piston (piston 2, fixed piston 3)
Series generates hydraulic thrust to improve system.
The infinitely multistage fluid power piston of the same central tube, has the following prominent advantages:
1) central tube is same one integral piece, and easy to process, safety (tensile strength) and reliability are higher；
2) fixed piston, piston active area can carry out uniform sizes design without successively decreasing, and be convenient for volume production and assembly；
3) fixed piston, piston can unlimited multilevel design, can satisfy the work requirements of low-pressure, high thrust.
The above are merely the preferred embodiment of the present invention, it is noted that for those skilled in the art, not
Under the premise of being detached from present inventive concept, several modifications and improvements can also be made, these also should be considered as protection model of the invention
It encloses, these all will not influence the effect and patent practicability that the present invention is implemented.
Claims (6)
1. a kind of design method of the infinitely multistage fluid power piston of same central tube, which comprises the following steps:
Multiple pistons, fixed piston are sheathed on central tube simultaneously common center pipe by S1；
S2 connects screw thread between adjacent piston；
Fixed piston is threadedly coupled by S3 with limited cap；
S4 offers quantity multiple pressure transmission holes corresponding with piston, fixed piston and lock groove on central tube；
S5 accommodates and limits latch in limited cap inner cavity, and latch is installed on the correspondence lock groove of central tube.
2. the design method of the infinitely multistage fluid power piston of same central tube according to claim 1, which is characterized in that in step
In rapid S1, the piston is identical with the quantity of fixed piston.
3. the design method of the infinitely multistage fluid power piston of same central tube according to claim 1 or 2, which is characterized in that
In step sl, sealing ring is mounted between the piston and central tube, between fixed piston and central tube and piston.
4. the design method of the infinitely multistage fluid power piston of same central tube according to claim 3, which is characterized in that in step
In rapid S1, the central tube is cylindrical tube.
5. the design method of the infinitely multistage fluid power piston of same central tube according to claim 4, which is characterized in that in step
In rapid S2, each piston working solution potential source is identical.
6. the design method of the infinitely multistage fluid power piston of same central tube according to claim 1, which is characterized in that in step
In rapid S5, the latch is that two semicircle steel annulus combinations are constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810965641.9A CN109139601A (en) | 2018-08-23 | 2018-08-23 | A kind of design method of the infinitely multistage fluid power piston of same central tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810965641.9A CN109139601A (en) | 2018-08-23 | 2018-08-23 | A kind of design method of the infinitely multistage fluid power piston of same central tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109139601A true CN109139601A (en) | 2019-01-04 |
Family
ID=64790970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810965641.9A Pending CN109139601A (en) | 2018-08-23 | 2018-08-23 | A kind of design method of the infinitely multistage fluid power piston of same central tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109139601A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5791412A (en) * | 1995-08-14 | 1998-08-11 | Baker Hughes Incorporated | Pressure-boost device for downhole tools |
| CN200971766Y (en) * | 2006-10-02 | 2007-11-07 | 杨东城 | Flushing packer |
| CN201358747Y (en) * | 2009-03-12 | 2009-12-09 | 盐城市汇浩石化机械有限公司 | Small diameter hydraulic packer |
| CN203257372U (en) * | 2013-05-28 | 2013-10-30 | 金湖县支点石油科技有限责任公司 | Packer working in a step-by-step deblocking mode |
| CN103775020A (en) * | 2014-02-19 | 2014-05-07 | 安东石油技术（集团）有限公司 | Combination rubber cylinder packer |
-
2018
- 2018-08-23 CN CN201810965641.9A patent/CN109139601A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5791412A (en) * | 1995-08-14 | 1998-08-11 | Baker Hughes Incorporated | Pressure-boost device for downhole tools |
| CN200971766Y (en) * | 2006-10-02 | 2007-11-07 | 杨东城 | Flushing packer |
| CN201358747Y (en) * | 2009-03-12 | 2009-12-09 | 盐城市汇浩石化机械有限公司 | Small diameter hydraulic packer |
| CN203257372U (en) * | 2013-05-28 | 2013-10-30 | 金湖县支点石油科技有限责任公司 | Packer working in a step-by-step deblocking mode |
| CN103775020A (en) * | 2014-02-19 | 2014-05-07 | 安东石油技术（集团）有限公司 | Combination rubber cylinder packer |
Non-Patent Citations (1)
| Title |
|---|
| 张赤诚: "《液压传动》", 30 June 1995, 地质出版社 * |
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| PB01 | Publication | ||
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Application publication date: 20190104 |