CN208073902U - A kind of hollow fluid cylinder of Operating Pressure - Google Patents
A kind of hollow fluid cylinder of Operating Pressure Download PDFInfo
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- CN208073902U CN208073902U CN201721739053.0U CN201721739053U CN208073902U CN 208073902 U CN208073902 U CN 208073902U CN 201721739053 U CN201721739053 U CN 201721739053U CN 208073902 U CN208073902 U CN 208073902U
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- 239000012530 fluid Substances 0.000 title claims abstract description 23
- 239000003921 oil Substances 0.000 claims description 70
- 238000007789 sealing Methods 0.000 claims description 27
- 230000037361 pathway Effects 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 8
- 239000010720 hydraulic oil Substances 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 241000233855 Orchidaceae Species 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
Abstract
The utility model is related to a kind of hollow fluid cylinders of Operating Pressure,A kind of hollow fluid cylinder of Operating Pressure,Including inner cylinder tube,The outer cylinder being set in outside inner cylinder tube,It is equipped with N+1 hydraulically extensible pipe between inner cylinder tube and outer cylinder successively from inside to outside,The inner tube of hydraulically extensible pipe and the center line of the inner cylinder tube are located on same vertical line,The top of inner cylinder tube is equipped with supporting sleeve and upper flange,Supporting sleeve is fixedly connected on the top of the hydraulically extensible pipe on inner cylinder tube,Upper flange is fixedly connected on the upper end of supporting sleeve,The upper end of the outer cylinder is equipped with upper oil inlet and outlet,The lower end of outer cylinder is equipped with lower oil inlet and outlet,Upper oil inlet and outlet and lower oil inlet and outlet are connected to the plunger shaft in hydraulically extensible pipe,Its is reasonable for structure,By equipped with multi-stage hydraulic expansion cylinder,Multi-stage hydraulic expansion cylinder can carry out control alone by respective hydraulics inlet,And then it can realize the length of the control telescoping tube of hydraulic pressure,Improve the rate of workover treatment.
Description
Technical field
The utility model is related to oil-gas field development technical field more particularly to a kind of hollow fluid cylinders of Operating Pressure.
Background technology
In oil well repairing operation, workover operation device with pressure be it is a kind of can be under the conditions of oil well and well with pressure, in well
Mouth plays the device of lower tubular column and underground operation tool.It can be divided into dynamic sealing and quiet by the sealing means between its wellhead assembly and tubing string
Seal two types.For dynamic sealing there are annular preventer packing unit is easy to wear, use cost is high, high failure rate and environmental pollution
Big disadvantage, and static seal mode efficiently solves these disadvantages existing for dynamic sealing.
However, telescoping tube must be used in operation process in existing static seal workover operation device with pressure, state at present
The telescoping tube of interior long stroke is still blank, cannot provide a long stroke telescoping tube for disposably exporting whole oil pipe.To realize
This purpose, Chinese Patent Application No. 201410792973.3 disclose a kind of telescoping tube, solve the too short telescoping tube of stroke,
But this telescoping tube is all passively to realize function by the lifting fluid cylinder of auxiliary so that a whole set of operation device under pressure seems numerous
It is trivial, volume is big, of high cost, to bring inconvenience in workover treatment.
Utility model content
In order to overcome the disadvantages of the above prior art, the purpose of this utility model is to provide the reasonable for structure, Neng Goutong of one kind
It crosses the control of itself oil circuit and carries out flexible Operating Pressure with hollow fluid cylinder.
In order to achieve the above objectives, the utility model use following technical scheme, a kind of hollow fluid cylinder of Operating Pressure, including
Inner cylinder tube, the outer cylinder being set in outside inner cylinder tube are equipped with N+1 liquid successively from inside to outside between the inner cylinder tube and outer cylinder
The pressure stretch draw, the inner tube of the hydraulically extensible pipe is located at the center line of the inner cylinder tube on same vertical line, described
The top of inner cylinder tube is equipped with supporting sleeve and upper flange, and the supporting sleeve is fixedly connected on the hydraulically extensible pipe on inner cylinder tube
Top, and be connected with the inner tube of the hydraulically extensible pipe, the upper flange is fixedly connected on the upper end of supporting sleeve, described
The upper end of outer cylinder is equipped with upper oil inlet and outlet, and the lower end of the outer cylinder is equipped with lower oil inlet and outlet, the upper oil inlet and outlet
The plunger shaft in hydraulically extensible pipe is connected to by inner cycle channel with lower oil inlet and outlet.
It includes level-one hydraulically extensible pipe and 2-level hydraulic telescoping tube, the level-one liquid that the hydraulically extensible pipe, which is two,
The pressure stretch draw includes level-one outer cylinder, level-one inner cylinder tube and first stage piston, and the flexible shop of the 2-level hydraulic includes two level cylinder barrel
And second piston；
Level-one inner cylinder tube, two level cylinder barrel and the level-one outer cylinder is sequentially sleeved at inner cylinder tube and outer cylinder from inside to outside
Between；
The inner wall of the level-one inner cylinder tube and the outer wall of inner cylinder tube are in sealing contact, the inner wall and one of the two level cylinder barrel
The outer wall of grade inner cylinder tube is in sealing contact, and annular second piston chamber, and institute are formed between the two level cylinder barrel and level-one outer cylinder
The bottom for the level-one outer cylinder stated and the level-one inner cylinder tube bottom in sealing contact for foring second piston chamber, the second piston
Be set in annular second piston chamber, and the inner wall of the second piston is fixedly connected with two level cylinder barrel, the outer wall of second piston with
The inner wall sealing of level-one outer cylinder contacts；
Annular first stage piston chamber, the first stage piston set are formed between the level-one outer cylinder and the outer cylinder
It is located in annular first stage piston chamber, the first stage piston is fixedly connected with the outer wall of level-one outer cylinder, the first stage piston
It is contacted with the inner wall sealing of outer cylinder, the bottom of the first stage piston is contacted with the outer wall of inner cylinder tube, and the level-one outer shell
The bottom of cylinder is located at the bottom end of the inside of first stage piston；
The bottom of the annular first stage piston chamber and annular second piston chamber is connected to lower oil inlet and outlet respectively, described
The top of annular first stage piston chamber and annular second piston chamber is connected to upper oil inlet and outlet；
Inner wall at the top of the two level cylinder barrel is fixedly connected with supporting sleeve, and the outer wall at the top of two level cylinder barrel is solid with upper flange
Fixed connection.
The top of the annular first stage piston chamber is equipped with first annular pressure cap, the first annular pressure cap and level-one outer cylinder
Outer wall it is in sealing contact, first annular pressure cap is fixedly connected with the inner wall of outer cylinder；
The top of the annular second piston chamber is equipped with the second annular pressure cap, the second annular pressure cap and level-one inner cylinder tube
Inner wall be fixedly connected, the outer wall of the second annular pressure cap and two level cylinder barrel is in sealing contact；
The top of the annular second piston chamber and the 2-level hydraulic oil inlet and outlet being arranged on the second annular pressure cap are logical
Cross the enterprising oil discharge passage connection being located in the second annular pressure cap, bottom and the lower oil inlet and outlet of the annular second piston chamber
By being connected into oil discharge passage under level-one outer cylinder bottom across first stage piston.
Interior feed pathway is equipped in the level-one inner cylinder tube, formed between the two level cylinder barrel level-one inner cylinder tube it is outer into
Liquid channel, the interior feed pathway are connected with outer feed pathway, and the interior feed pathway is connected to upper oil inlet and outlet, described
Outer feed pathway be connected with annular second piston chamber.
It is designed with O-ring seal between the upper flange and supporting sleeve, supporting sleeve and two level cylinder barrel.
The both sides external of the upper flange is equipped with upper ear seat, and the both sides external of the outer cylinder is respectively equipped with lower ear
Seat, the upper ear seat are connected with lower ear base by connecting fork, and the lower ear base and upper ear seat are logical with the both ends of connecting fork respectively
Axis pin connection is crossed, spacer ring is additionally provided on the outside of the axis pin.
The 2-level hydraulic oil inlet and outlet is connected with crossover sub.
The pipeline connected on the oil inlet connector and crossover sub connected outside the upper oil inlet and outlet and lower oil inlet and outlet
It is equipped with solenoid directional control valve.
The utility model has the beneficial effects that：Its is reasonable for structure, by equipped with hollow multi-stage hydraulic expansion cylinder, Ke Yitong
It crosses hydraulic system and controls lifting function alone, and ensure that the inside airtight passage of Operating Pressure construction, simplify existing band
The structure for pressing implement, improves safety and the construction efficiency of workover treatment.
Description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is the utility model schematic cross-sectional view；
Fig. 3 is Fig. 2 top half structural schematic diagrams；
Fig. 4 is the lower half portion Fig. 2 structural schematic diagram；
Fig. 5 is pipeline connection diagram in the utility model；
Fig. 6 is the structural schematic diagram that hollow fluid cylinder stretches out in the utility model.
Fig. 7 is the structural schematic diagram in the portions A in Fig. 1.
In figure：1. upper flange；2. supporting sleeve；3. two level cylinder barrel；4. first annular pressure cap；5. the second annular pressure cap；Outside 6.
Cylinder barrel；7. level-one outer cylinder；8. level-one inner cylinder tube；9. inner cylinder tube；10. second piston；11. first stage piston；12. axis pin；13.
Spacer ring；14. connecting fork；15. crossover sub；Oil inlet and outlet on 16.；17. lower oil inlet and outlet；18. annular second piston chamber；
19. annular first stage piston chamber；20. 2-level hydraulic oil inlet and outlet；21. enterprising oil discharge passage；Into oil discharge passage under 22.；In 23.
Feed pathway；24. outer feed pathway；25.O type sealing rings；26. solenoid directional control valve；27. upper ear seat；28. lower ear base.
Specific implementation mode
The utility model is described in detail with reference to the accompanying drawings and examples.
In the description of the present invention, it should be understood that term "center", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indicates or imply and is signified
Device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to this practicality
Novel limitation.
Term " first ", " second " are used for description purposes only, be not understood to indicate or imply relative importance or
Implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply
Ground includes one or more this feature.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
It is a or more than two.
Embodiment 1
A kind of hollow fluid cylinder of Operating Pressure as shown in Figure 1, Figure 2, Figure 3, Figure 4, including inner cylinder tube 9, are set in inner casing
Outer cylinder 6 outside cylinder 9 is equipped with N+1 hydraulically extensible pipe successively from inside to outside between the inner cylinder tube 9 and outer cylinder 6, described
The inner tube of hydraulically extensible pipe and the center line of the inner cylinder tube 9 be located on same vertical line, the top of the inner cylinder tube 9
Equipped with supporting sleeve 2 and upper flange 1, the supporting sleeve 2 is fixedly connected on the top of the hydraulically extensible pipe on inner cylinder tube 9,
And be connected with the inner tube of the hydraulically extensible pipe, the upper flange 1 is fixedly connected on the upper end of supporting sleeve 2, the outer shell
The upper end of cylinder 6 is equipped with upper oil inlet and outlet 16, and the lower end of the outer cylinder 6 is equipped with lower oil inlet and outlet 17, and described is enterprising fuel-displaced
Mouth 16 and lower oil inlet and outlet 17 are connected to the plunger shaft in hydraulically extensible pipe.The inner cylinder tube 9 is constructed interior as Operating Pressure
It is communicated in channel and well, closed to bear highly pressurised liquid in well, latus rectum can ensure the needs of construction operation.Two level cylinder barrel 3
For the upper flange being equipped with for being fixedly connected with preventer, the slips in Operating Pressure, the lower section of the outer cylinder 6 is equipped with method
Orchid carries the equipment such as wire hole and raising four-way in Operating Pressure and is fixedly connected, in the process of work, according to the need of construction
It asks, enters the oil circuit in hollow fluid cylinder using solenoid directional control valve control, and then control hydraulically extensible pipe, it is made to come according to demand
It is lifted and is stretched, and then meet the requirement of Operating Pressure construction, the current needs of effective solution separately add dedicated lifting
Fluid cylinder changes the length of telescoping tube, simplifies operation device under pressure structure, improves the efficiency of workover treatment.
It is described in detail mainly for the hydraulically extensible pipe that can carry out flexible two level in the present embodiment, specifically such as
It includes level-one hydraulically extensible pipe and 2-level hydraulic telescoping tube that hydraulically extensible pipe described in Fig. 2, which is two, and the level-one hydraulic pressure is stretched
The draw includes level-one outer cylinder 7, level-one inner cylinder tube 8 and first stage piston 11, and the flexible shop of the 2-level hydraulic includes two level cylinder barrel 3
With second piston 10；
Level-one inner cylinder tube 8, two level cylinder barrel 3 and the level-one outer cylinder 7 is sequentially sleeved at inner cylinder tube 9 and outer from inside to outside
Between cylinder barrel 6；The center line of the inner cavity of the level-one inner cylinder tube 8 and two level cylinder barrel 3 and inner cylinder tube 8 is located on logical straight line, and
Inner cylinder tube 9 and level-one inner cylinder tube 8, two level cylinder barrel 3 are connected, and can allow it to tubing string during ensureing Operating Pressure and pass through；
The outer wall of the inner wall and inner cylinder tube 9 of the level-one inner cylinder tube 8 is in sealing contact, the inner wall of the two level cylinder barrel 3
It is in sealing contact with the outer wall of level-one inner cylinder tube 8, annular second piston is formed between the two level cylinder barrel 3 and level-one outer cylinder 7
Chamber 18, and the bottom of the level-one outer cylinder 7 and level-one the inner cylinder tube 8 annular second piston chamber 18 in sealing contact that forms
Bottom, the second piston 10 are set in annular second piston chamber 18, and the inner wall of the second piston 10 and two level cylinder barrel
3 are fixedly connected, and the outer wall of second piston 10 is contacted with the inner wall sealing of level-one outer cylinder 7；The second piston 10 can be
It is moved up and down in annular second piston chamber 18, second piston 10 with two level cylinder barrel 3 because being fixedly connected, therefore in two level
Piston 10 drives two level cylinder barrel 3 to move up and down during moving up and down, and then two level cylinder barrel 3 can stretch；
Annular first stage piston chamber 19, the level-one are formed between the level-one outer cylinder 7 and the outer cylinder 6
Piston 11 is set in annular first stage piston chamber 19, and the first stage piston 11 is fixedly connected with the outer wall of level-one outer cylinder 7, institute
The first stage piston 11 stated is contacted with the inner wall sealing of outer cylinder 6, and the bottom of the first stage piston 11 and the outer wall of inner cylinder tube 9 are close
Sealing-in is touched, and the bottom of the level-one outer cylinder 7 is located at the bottom end of the inside of first stage piston 11；
The first stage piston 11 can move up and down in annular first stage piston chamber 19, and then drive level-one outer shell
Cylinder 7 stretches.
The bottom of the annular first stage piston chamber 19 and annular second piston chamber 18 is connected to lower oil inlet and outlet 17 respectively,
The top of the annular first stage piston chamber 19 and annular second piston chamber 18 is connected to upper oil inlet and outlet 16；
When specifically at work, as stretch, the oil that by lower oil inlet and outlet 17 into oil, initially enter
First stage piston 11 is pushed to carry out uplink in annular first stage piston chamber 19, first stage piston 11 drives level-one during uplink
Outer cylinder 7, second piston 10, two level cylinder barrel 3 and level-one inner cylinder tube 8 carry out uplink, during uplink, level-one inner cylinder tube 8
In the contact uplink of inner cylinder tube 9, while the length that will extend oil pipe, realization level-one stretch, after the completion of level-one is flexible, continue to supply
Oil, oil enter the bottom of annular second piston chamber 18, push second piston uplink, second piston that two level cylinder barrel 3 is driven to carry out
Uplink, two level cylinder barrel 3 form the inner cylinder tube 9 to link together, in level-one from top to bottom relative to 8 uplink of level-one inner cylinder tube
Cylinder barrel 8 and two level cylinder barrel 3 form a closed channel that can bear high pressure in well.As shown in Figure 5 and Figure 6 and then lengthen
The length of telescoping tube realizes telescoping tube and carries out flexible purpose by oil circuit control, solves and need dedicated act at present
Fluid cylinder is risen to realize that telescoping tube carries out flexible defect.
The inner wall at 3 top of two level cylinder barrel is fixedly connected with supporting sleeve 2, the outer wall at 3 top of two level cylinder barrel and upper method
Orchid 1 is fixedly connected.During flexible, the slips connected by upper flange can drive tubing string in well to move up and down, and complete band
Press job execution.
Embodiment 2
On the basis of embodiment 1, in order to ensure that annular first stage piston chamber 19 and annular second piston chamber 18 can
Sealing, and entire cavity will not be caused to change, the top of the annular first stage piston chamber 19 is equipped with first annular pressure cap 4,
The first annular pressure cap 4 and the outer wall of level-one outer cylinder 7 are in sealing contact, and the inner wall of first annular pressure cap 4 and outer cylinder 6, which is fixed, to be connected
It connects；The first annular pressure cap 4 is for being sealed the top of annular first stage piston chamber 19.
The top of the annular second piston chamber 18 is equipped with the second annular pressure cap 5, in the second annular pressure cap 5 and level-one
The inner wall of cylinder barrel 7 is fixedly connected, and the second annular pressure cap 5 is in sealing contact with the outer wall of two level cylinder barrel 3；The annular pressure cap of described second
5 pairs of annular second piston chambers 18 are sealed.
The top of the annular second piston chamber 18 and the 2-level hydraulic oil inlet and outlet being arranged on the second annular pressure cap 5
The 20 enterprising oil discharge passage 21 by being located in the second annular pressure cap 5 is connected to, the bottom of the annular second piston chamber 18 with
Lower oil inlet and outlet 17 under 7 bottom of level-one outer cylinder across first stage piston 11 into oil discharge passage 22 by being connected to.It is equipped with down
Oil inlet and outlet 17 mainly pushes first stage piston to carry out uplink, is equipped with down into oil discharge passage 22 and mainly will go into lower disengaging
Oil in hydraulic fluid port 17 imported into promotion second piston uplink in annular second piston chamber 18, and the upper oil inlet and outlet 16 being equipped with is annular
First stage piston chamber 18 carries out feed liquor or goes out liquid, and when first stage piston uplink, upper oil inlet and outlet 16 is used for out liquid, works as level-one
When piston needs downlink, 16 feed liquor of upper oil inlet and outlet pushes first stage piston to carry out downlink, realizes level-one retraction, two be equipped with
Grade hydraulic pressure oil inlet and outlet 20 is identical as 16 principle of upper oil inlet and outlet, is mainly used for carrying out fuel-displaced or oil inlet promotion two
Grade descent of piston.
It is equipped with interior feed pathway 23 in the level-one inner cylinder tube 8, shape between the 2 level-one inner cylinder tube 8 of two level cylinder barrel
At outer feed pathway 24, the interior feed pathway 23 and outer feed pathway 24 are connected, the interior feed pathway 23 under into
Oil outlet 17 is connected to, and the outer feed pathway 24 is connected with annular second piston chamber 18.23 He of interior oil inlet passage being equipped with
Outer oil inlet passage 24 is connected to, and can be converted to entering the oil in annular second piston chamber 18, when second piston uplink,
The oil of annular 18 upper end of second piston chamber enters annular second piston chamber 18 by interior oil inlet passage 23 and outer oil inlet passage 24
Lower end, when second piston uplink, annular 18 lower end of second piston chamber oil pass through interior oil inlet passage 23 and outer oil inlet passage
24 enter the upper end of annular second piston chamber 18, without flowing back.
On the oil inlet connector and crossover sub 15 that the upper oil inlet and outlet 16 and lower oil inlet and outlet 17 connect outside simultaneously
The pipeline of connection is equipped with solenoid directional control valve 26.
The solenoid directional control valve 26 being equipped with can carry out liquid in-out mouth conversion according to the demand of Operating Pressure operating mode, and then control
Hydraulically extensible pipe stretches.
Further, in order to ensure leakproofness, the upper flange 1 and supporting sleeve 2, supporting sleeve 2 and two level cylinder barrel 3 it
Between be designed with O-ring seal 25.
As shown in fig. 7, in order to ensure when without using the equipment, it can ensure that equipment is in the state of retraction, and not
It can extend, the both sides external of the upper flange 1 is equipped with upper ear seat 27, and the both sides external of the outer cylinder 6 is respectively equipped with down
Ear mount 28, the upper ear seat 27 and lower ear base 28 are connected by connecting fork 14, and the lower ear base 28 and upper ear seat 27 respectively with
The both ends of connecting fork 14 are connected by axis pin 12, and 12 outside of axis pin is additionally provided with spacer ring 13.
Above example is only to the utility model for example, not constituting to the scope of protection of the utility model
Limitation, every design same or analogous with the utility model belongs within the scope of protection of the utility model.
Claims (8)
1. a kind of hollow fluid cylinder of Operating Pressure, which is characterized in that including inner cylinder tube (9), be set in the outer shell of inner cylinder tube (9) outside
Cylinder (6) is equipped with N+1 hydraulically extensible pipe, the liquid successively from inside to outside between the inner cylinder tube (9) and outer cylinder (6)
The inner tube of the pressure stretch draw and the center line of the inner cylinder tube (9) are located on same vertical line, the top of the inner cylinder tube (9)
Equipped with supporting sleeve (2) and upper flange (1), the supporting sleeve (2) is fixedly connected on the hydraulically extensible pipe on inner cylinder tube (9)
Top, and be connected with the inner tube of the hydraulically extensible pipe, the upper flange (1) is fixedly connected on the upper end of supporting sleeve (2),
The upper end of the outer cylinder (6) is equipped with upper oil inlet and outlet (16), and the lower end of the outer cylinder (6) is equipped with lower oil inlet and outlet
(17), the upper oil inlet and outlet (16) and lower oil inlet and outlet (17) are connected to the plunger shaft in hydraulically extensible pipe.
2. a kind of hollow fluid cylinder of Operating Pressure according to claim 1, which is characterized in that the hydraulically extensible pipe is
Two include level-one hydraulically extensible pipe and 2-level hydraulic telescoping tube, the level-one hydraulically extensible pipe include level-one outer cylinder (7),
Level-one inner cylinder tube (8) and first stage piston (11), the flexible shop of the 2-level hydraulic includes two level cylinder barrel (3) and second piston
(10)；
Level-one inner cylinder tube (8), two level cylinder barrel (3) and the level-one outer cylinder (7) is sequentially sleeved at inner cylinder tube (9) from inside to outside
Between outer cylinder (6)；
The outer wall of the inner wall and inner cylinder tube (9) of the level-one inner cylinder tube (8) is in sealing contact, the two level cylinder barrel (3) it is interior
Wall and the outer wall of level-one inner cylinder tube (8) are in sealing contact, and annular is formed between the two level cylinder barrel (3) and level-one outer cylinder (7)
Second piston chamber (18), and the bottom of the level-one outer cylinder (7) and level-one inner cylinder tube (8) are in sealing contact forms annular two
The bottom of grade plunger shaft (18), the second piston (10) is set in annular second piston chamber (18), and the second piston
(10) inner wall is fixedly connected with two level cylinder barrel (3), and the inner wall sealing of the outer wall and level-one outer cylinder (7) of second piston (10) connects
It touches；
Annular first stage piston chamber (19), the level-one are formed between the level-one outer cylinder (7) and the outer cylinder (6)
Piston (11) is set in annular first stage piston chamber (19), and the first stage piston (11) and the outer wall of level-one outer cylinder (7) are solid
Fixed connection, the first stage piston (11) are contacted with the inner wall sealing of outer cylinder (6), the bottom of the first stage piston (11) with it is interior
The outer wall of cylinder barrel (9) contacts, and the bottom of the level-one outer cylinder (7) is located at the bottom end of the inside of first stage piston (11)；
The bottom of the annular first stage piston chamber (19) and annular second piston chamber (18) connects with lower oil inlet and outlet (17) respectively
Logical, the top of the annular first stage piston chamber (19) and annular second piston chamber (18) is connected to upper oil inlet and outlet (16)；
Inner wall at the top of the two level cylinder barrel (3) is fixedly connected with supporting sleeve (2), the outer wall at the top of two level cylinder barrel (3) with it is upper
Flange (1) is fixedly connected.
3. a kind of hollow fluid cylinder of Operating Pressure according to claim 2, which is characterized in that the annular first stage piston
The top of chamber (19) is equipped with first annular pressure cap (4), and the first annular pressure cap (4) and the outer wall sealing of level-one outer cylinder (7) connect
It touches, first annular pressure cap (4) is fixedly connected with the inner wall of outer cylinder (6)；
The top of the annular second piston chamber (18) is equipped with the second annular pressure cap (5), the second annular pressure cap (5) and level-one
The inner wall of outer cylinder (7) is fixedly connected, and the second annular pressure cap (5) and the outer wall of two level cylinder barrel (3) are in sealing contact；
2-level hydraulic oil inlet and outlet of the top of the annular second piston chamber (18) with setting on the second annular pressure cap (5)
(20) it is connected to by the enterprising oil discharge passage (21) being located in the second annular pressure cap (5), the annular second piston chamber (18)
Bottom and lower oil inlet and outlet (17) by passing through under first stage piston (11) and level-one outer cylinder (7) bottom into oil discharge passage
(22) it is connected to.
4. a kind of hollow fluid cylinder of Operating Pressure according to claim 3, which is characterized in that the level-one inner cylinder tube
(8) it is equipped with interior feed pathway (23) in, outer feed pathway (24) is formed between two level cylinder barrel (3) the level-one inner cylinder tube (8),
The interior feed pathway (23) is connected with outer feed pathway (24), the interior feed pathway (23) and lower oil inlet and outlet (17)
Connection, the outer feed pathway (24) are connected with annular second piston chamber (18).
5. a kind of hollow fluid cylinder of Operating Pressure according to claim 2, which is characterized in that the upper flange (1) with
It is designed with O-ring seal (25) between supporting sleeve (2), supporting sleeve (2) and two level cylinder barrel (3).
6. a kind of hollow fluid cylinder of Operating Pressure according to claim 1, which is characterized in that the upper flange (1)
Both sides external is equipped with upper ear seat (27), and the both sides external of the outer cylinder (6) is respectively equipped with lower ear base (28), the upper ear
Seat (27) and lower ear base (28) by connecting fork (14) connection, and the lower ear base (28) and upper ear seat (27) respectively with connecting fork
(14) both ends are connected by axis pin (12), and spacer ring (13) is additionally provided between the upper ear seat (27) and connecting fork (14).
7. a kind of hollow fluid cylinder of Operating Pressure according to claim 4, which is characterized in that the 2-level hydraulic disengaging
Hydraulic fluid port (20) is connected with crossover sub (15).
8. a kind of hollow fluid cylinder of Operating Pressure according to claim 4, which is characterized in that the upper oil inlet and outlet
(16) and on the oil inlet connector that connects outside of lower oil inlet and outlet (17) and crossover sub (15) pipeline connected is changed equipped with electromagnetism
To valve (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721739053.0U CN208073902U (en) | 2017-12-14 | 2017-12-14 | A kind of hollow fluid cylinder of Operating Pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721739053.0U CN208073902U (en) | 2017-12-14 | 2017-12-14 | A kind of hollow fluid cylinder of Operating Pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208073902U true CN208073902U (en) | 2018-11-09 |
Family
ID=64032342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721739053.0U Withdrawn - After Issue CN208073902U (en) | 2017-12-14 | 2017-12-14 | A kind of hollow fluid cylinder of Operating Pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208073902U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006006A (en) * | 2017-12-14 | 2018-05-08 | 西安宇星石油机械新技术开发有限公司 | A kind of hollow fluid cylinder of Operating Pressure |
| CN108006006B (en) * | 2017-12-14 | 2024-04-26 | 西安宇星石油机械新技术开发有限公司 | Hollow hydraulic cylinder for operation under pressure |
-
2017
- 2017-12-14 CN CN201721739053.0U patent/CN208073902U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006006A (en) * | 2017-12-14 | 2018-05-08 | 西安宇星石油机械新技术开发有限公司 | A kind of hollow fluid cylinder of Operating Pressure |
| CN108006006B (en) * | 2017-12-14 | 2024-04-26 | 西安宇星石油机械新技术开发有限公司 | Hollow hydraulic cylinder for operation under pressure |
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