CN105757381A - Telescopic tube - Google Patents
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- CN105757381A CN105757381A CN201410792973.3A CN201410792973A CN105757381A CN 105757381 A CN105757381 A CN 105757381A CN 201410792973 A CN201410792973 A CN 201410792973A CN 105757381 A CN105757381 A CN 105757381A
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Abstract
The invention particularly provides a telescopic tube.The telescopic tube comprises a quaternary telescopic barrel, a tertiary telescopic barrel, a secondary telescopic barrel, a primary telescopic barrel and an outer cylinder barrel, all of which are sequentially sleeved from inside to outside.A flange plate is arranged on the lower portion of the outer cylinder barrel.A primary pressing cap, a packing type sealing ring and a primary guide sleeve are sequentially connected between an opening of the outer cylinder barrel and the primary telescopic barrel from top to bottom.The lower portion of the primary telescopic barrel is connected with a primary straightening sleeve.A secondary pressing cap, a packing type sealing ring and a secondary guide sleeve are sequentially connected between the upper end of the primary telescopic barrel and the secondary telescopic barrel from top to bottom.The lower portion of the secondary telescopic barrel is connected with a secondary straightening sleeve.The structures of the secondary telescopic barrel, the tertiary telescopic barrel and the primary telescopic barrel are identical.The lower portion of the quaternary telescopic barrel is connected with a quaternary straightening sleeve, and the upper end of the quaternary telescopic barrel is connected with an upper flange.The stroke of the telescopic tube ranges from 11.5 m to 12 m, a whole oil tube can ascend and descend at a time, and working efficiency is high; meanwhile, the telescopic tube is of a multi-level telescopic structure, the retraction height is only 3.6 m, and installation and transportation are convenient.
Description
Technical field
The invention belongs to oil field operation device under pressure technical field, be specifically related to a kind of telescoping tube, during for static-sealing type Operating Pressure, bear medium and pressure in well, and flexible raise and decentralize oil pipe by it.
Background technology
In oil well repairing operation, workover operation device with pressure is that one under oil well and well condition with pressure, can play the device of lower tubular column and underground operation tool at well head.Movable sealing and static seal two types can be divided into by the sealing means between its wellhead assembly and tubing string.It is easy to wear to there is packing seal circle 23 in movable sealing, and use cost is high, the shortcoming that fault rate is high and environmental pollution is big, and static seal mode efficiently solves these shortcomings that movable sealing exists.
But, telescoping tube must be used in operation process at existing static seal workover operation device with pressure, the telescoping tube of current domestic Long travel is still blank, it is impossible to provide the Long travel telescoping tube of whole oil pipe of a disposable derivation.
Summary of the invention
It is an object of the invention to overcome existing static seal workover operation device with pressure not have in operation process can the problem of Long travel telescoping tube of whole oil pipe of disposable derivation.
nullFor this，The invention provides a kind of telescoping tube，Including the level Four retracting cylinder being set with successively from inside to outside、Three grades of retracting cylinders、Two grades of retracting cylinders、One-level retracting cylinder and outer cylinder，Described outer cylinder bottom is provided with ring flange，One-level pressure cap from top to bottom it is connected successively between outer cylinder oral area with one-level retracting cylinder，Packing seal circle、One-level fairlead，Described one-level retracting cylinder bottom connects one-level supporting positive cover，Two grades of pressure caps from top to bottom it are sequentially connected with between one-level retracting cylinder upper end and two grades of retracting cylinders、Packing seal circle、Two grades of fairleads，Two grades of retracting cylinder bottoms connect two grades of supporting positive covers，Three grades of pressure caps from top to bottom it are sequentially connected with between two grades of retracting cylinder upper ends and three grades of retracting cylinders、Packing seal circle、Three grades of fairleads，Three grades of retracting cylinder bottoms connect three grades of supporting positive covers，Level Four pressure cap from top to bottom it is sequentially connected with between three grades of retracting cylinder upper ends and level Four retracting cylinder、Packing seal circle、Level Four fairlead，Level Four retracting cylinder bottom connects level Four supporting positive cover，Level Four retracting cylinder upper end connects upper flange.
Described upper flange cylindrical size is identical with standard wellhead flange；From top to bottom being followed successively by top endoporus, middle part endoporus and lower internal thread hole in the middle of upper flange, top endoporus is identical with bore diameter of preventer, and lower internal thread hole is connected with level Four retracting cylinder；
The bottom cylindrical of upper flange is radially evenly equipped with one group of first screwed hole, in first screwed hole, holding screw is installed, the maximum cylindrical of upper flange is radially provided with two liquid outlets, and liquid outlet oral area is provided with a female thread, and the maximum cylindrical of upper flange is the uniform several bolts hole being connected with upper chuck axially；Upper flange upper end is provided with boss, and the upper plane of boss is provided with a sealed groove.
The first endoporus of up/down perforation it is provided with in the middle of described level Four retracting cylinder, first endoporus is identical with the latus rectum of upper flange, level Four retracting cylinder top cylindrical is provided with "O"-ring groove, installs "O"-ring in ring recess, and cylindrical bottom, level Four retracting cylinder top is provided with the first external screw thread and is connected with upper flange；First external screw thread bottom is provided with the face of cylinder one, and one group of driving hole one radially is arranged at bottom, the face of cylinder one, and level Four retracting cylinder bottom is provided with the second external screw thread, and there is the second screwed hole one group uniform level Four retracting cylinder lower surface, is provided with holding screw in the second screwed hole.
Being provided with the second endoporus of up/down perforation in the middle of described level Four pressure cap, the cylindrical latus rectum of the second endoporus and three grades of retracting cylinders is identical；Level Four pressure cap oral area has an annular groove one, installs dust ring in annular groove one；It is provided with annular groove two in the middle of level Four pressure cap, wear ring is installed in annular groove two；Level Four pressure cap external cylindrical surface is step-like, and the maximum cylindrical in top is evenly distributed in one group of gap, and the maximum cylindrical bottom of level Four pressure cap is provided with the 3rd external screw thread being connected with three grades of retracting cylinders, and one section of face of cylinder two is arranged at the 3rd external screw thread bottom.
The endoporus of up/down perforation it is provided with in the middle of described three grades of retracting cylinders, hole size is identical with level Four supporting positive cover external diameter, the oral area of three grades of retracting cylinders has one section of female thread one being connected with level Four pressure cap, one section of stepped hole one is arranged at female thread one bottom, one section of female thread two installing level Four fairlead is arranged at stepped hole bottom, female thread two bottom is provided with unthreaded hole one, three grades of retracting cylinder top cylindricals are provided with the face of cylinder three, one group of driving hole two radially is arranged at bottom, the face of cylinder three, three grades of retracting cylinder bottoms are provided with the 3rd external screw thread, there is one group of the 3rd screwed hole three grades of retracting cylinder lower surfaces, in 3rd screwed hole, holding screw is installed.
Being provided with the 3rd endoporus of up/down perforation in the middle of described level Four fairlead, the 3rd endoporus is identical with the second hole size of level Four pressure cap；An annular groove three is had in the middle of 3rd endoporus of level Four fairlead, wear ring is installed in annular groove three, level Four fairlead top cylindrical is provided with the 4th external screw thread being connected with three grades of retracting cylinders, and there is one group of blind hole level Four fairlead upper surface, and the 4th external screw thread bottom cylindrical is the face of cylinder four.
Described outer cylinder top is cylindric cylinder barrel, its hole size is identical with the external diameter of one-level supporting positive cover, outer cylinder oral area has one section of female thread three being connected with one-level pressure cap, one section of stepped hole two is arranged at female thread three bottom, one section of female thread four is arranged at stepped hole two bottom, female thread four bottom is unthreaded hole two, and a circlip groove, installing hole back-up ring in circlip groove are arranged at unthreaded hole two bottom.
Described outer cylinder lower weld has flange, and flange excircle size is consistent with the rising four-way external diameter of connection, and the end face of flange is provided with one group of bolt hole being connected with rising four-way.
The endoporus top of described level Four supporting positive cover is the female thread four being connected with level Four retracting cylinder, female thread four bottom is provided with diameter less than externally threaded unthreaded hole two, the hole size of level Four supporting positive cover outside diameter and three grades of retracting cylinders is identical, level Four supporting positive cover cylindrical is provided with annular groove four, installing wear ring in annular groove four, there is one group of screw thread via level Four supporting positive cover lower surface.
Beneficial effects of the present invention:
(1) this telescoping tube stroke provided by the invention is 11.5 meters to 12 meters, disposable can remove whole oil pipe, and work efficiency is high.
(2) this telescoping tube provided by the invention is multi-stage telescopic structure, retracts and is highly only 3.6 meters, it is simple to installation and transportation.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is telescoping tube scheme of installation.
Fig. 2 is flexible pipe structure schematic diagram.
Fig. 3 is that telescoping tube stretches out state diagram.
Fig. 4 is upper flange schematic diagram.
Fig. 5 is upper flange top view.
Fig. 6 is level Four retracting cylinder schematic diagram.
Fig. 7 is level Four pressure cap schematic diagram.
Fig. 8 is level Four pressure cap top view.
Fig. 9 is three grades of retracting cylinder schematic diagrams.
Figure 10 is level Four fairlead schematic diagram.
Figure 11 is outer cylinder schematic diagram.
Figure 12 is level Four supporting positive cover schematic diagram.
Description of reference numerals: 1, upper flange；2, level Four retracting cylinder；3, level Four pressure cap；4, three grades of retracting cylinders；5, three grades of pressure caps；6, two grades of retracting cylinders；7, level Four fairlead；8, two grades of pressure caps；9, three grades of pressure caps；10, one-level pressure cap；11, two grades of fairleads；12, outer cylinder；13, one-level fairlead；14, first stage piston cylinder；15, level Four supporting positive cover；16, three grades of supporting positive covers；17, two grades of supporting positive covers；18, one-level supporting positive cover；19, O；20, holding screw；21, dust ring；22, wear ring；23, packing seal circle；24, hole back-up ring；25, top endoporus；26, middle part endoporus；27 lower internal thread holes；28, the first screwed hole；29 cylindricals；30, boss；31, sealed groove；32, bolt hole；33, liquid outlet；34, female thread；35, the first endoporus；36, ring recess；37, the first external screw thread；38, the face of cylinder one；39, driving hole one；40, the second external screw thread；41, the second screwed hole；42, annular groove one；43, annular groove two；44, the second endoporus；45, the 3rd external screw thread；46, the face of cylinder two；47, gap；48, female thread one；49, stepped hole；50, female thread two；51, unthreaded hole one；52, the face of cylinder three；53, driving hole two；54, the 3rd external screw thread；55, the 3rd screwed hole；56, the 3rd endoporus；57, annular groove three；58, blind hole；59, the 4th external screw thread；60, the face of cylinder four；61, female thread three；62, stepped hole two；63, female thread four；64, unthreaded hole two；65, cylinder barrel；66, circlip groove；67, flange；68, bolt hole；69, female thread four；70, unthreaded hole two；71, screw thread via；72, annular groove four；73, level Four supporting positive cover cylindrical.
Detailed description of the invention
Embodiment 1:
nullCan the problem of Long travel telescoping tube of whole oil pipe of disposable derivation in order to overcome existing static seal workover operation device with pressure not have in operation process，Present embodiments provide a kind of such as Fig. 1、Telescoping tube shown in Fig. 2 and Fig. 3，Including the level Four retracting cylinder 2 being set with successively from inside to outside、Three grades of retracting cylinders 4、Two grades of retracting cylinders 6、One-level retracting cylinder 14 and outer cylinder 12，Described outer cylinder 12 bottom is provided with ring flange，One-level pressure cap 10 from top to bottom it is connected successively between outer cylinder 12 oral area and one-level retracting cylinder 14，Packing seal circle 23、One-level fairlead 13，Described one-level retracting cylinder 14 bottom connects one-level supporting positive cover 18，Two grades of pressure caps 8 from top to bottom it are sequentially connected with between one-level retracting cylinder 14 upper end and two grades of retracting cylinders 6、Packing seal circle 23、Two grades of fairleads 11，Two grades of retracting cylinder 6 bottoms connect two grades of supporting positive covers 17，Three grades of pressure caps 5 from top to bottom it are sequentially connected with between two grades of retracting cylinder 6 upper ends and three grades of retracting cylinders 4、Packing seal circle 23、Three grades of fairleads 9，Three grades of retracting cylinder 4 bottoms connect three grades of supporting positive covers 16，Level Four pressure cap 3 from top to bottom it is sequentially connected with between three grades of retracting cylinder 4 upper ends and level Four retracting cylinder 2、Packing seal circle 23、Level Four fairlead 7，Level Four retracting cylinder 2 bottom connects level Four supporting positive cover 15，Level Four retracting cylinder 2 upper end connects upper flange 1.
As it is shown in figure 1, telescoping tube is connected above upper chuck and hydraulic control well plugging device, it is connected below raising four-way, lower chuck and quick preventer.
When playing oil pipe, stretching out process: close hydraulic control well plugging device, open the quick preventer in bottom, in well, medium enters telescoping tube inner chamber, arrives specific bit and postpones, and relies on external force to be held by whole telescoping tube.Retraction process: close the preventer of telescoping tube bottom, telescoping tube interior media relies on reflux pipe to be recycled in well, then passes through external force and telescoping tube is pulled down to appointment position.
During lower oil pipe, stretching out process: close the quick preventer in telescoping tube bottom, telescoping tube interior media relies on reflux pipe to be recycled in well, drives telescoping tube to rise to appointment position again through external force.Retraction process: closing top hydraulic control well plugging device, open the quick preventer in bottom, in well, medium enters telescoping tube inner chamber, presses to appointment position again through external force by telescoping tube.
Embodiment 2:
On the basis of embodiment 1, as shown in Figure 4, Figure 5, described upper flange 1 cylindrical size is identical with standard wellhead flange；From top to bottom being followed successively by top endoporus 25, middle part endoporus 26 and lower internal thread hole 27 in the middle of upper flange 1, top endoporus 25 is identical with bore diameter of preventer, and middle part endoporus 26 coordinates with O 19 and seals, and lower internal thread hole 27 is connected with level Four retracting cylinder 2；The bottom cylindrical 29 of upper flange 1 is radially evenly equipped with one group of first screwed hole 28, in first screwed hole 28, holding screw 20 is installed, play locking thread effect, the maximum cylindrical of upper flange 1 is radially provided with two liquid outlets 33, liquid outlet 33 oral area is provided with a female thread 34, and the maximum cylindrical of upper flange 1 is the uniform several bolts hole 32 being connected with upper chuck axially；Upper flange 1 upper end is provided with boss 30, and the upper plane of boss 30 is provided with a sealed groove 31.
As shown in Figure 6, the first endoporus 35 of up/down perforation it is provided with in the middle of described level Four retracting cylinder 2, first endoporus 35 is identical with the latus rectum of upper flange 1, level Four retracting cylinder 2 top cylindrical is provided with O groove 36, in ring recess 36, mounting O-shaped rings 19 seals, and cylindrical bottom, level Four retracting cylinder 2 top is provided with the first external screw thread 37 and is connected with upper flange 1；First external screw thread 37 bottom is provided with a segment length and the high face of cylinder of precision 1 is sealing surface, one group of driving hole 1 radially is arranged at bottom, the face of cylinder 1, it is used for dismounting level Four supporting positive cover 15, level Four retracting cylinder 2 bottom is provided with the second external screw thread 40, it is connected with level Four supporting positive cover 15, there is the second screwed hole 41 one group uniform level Four retracting cylinder 2 lower surface, is provided with holding screw 20, plays locking thread effect in the second screwed hole 41.
As shown in Figure 7, Figure 8, being provided with the second endoporus 44 of up/down perforation in the middle of described level Four pressure cap 3, the second endoporus 44 is identical with the cylindrical latus rectum of three grades of retracting cylinders 4；Level Four pressure cap 3 oral area has an annular groove 1, installs dust ring 21 in annular groove 1；It is provided with annular groove 2 43 in the middle of level Four pressure cap 3, wear ring 22 is installed in annular groove 2 43；Level Four pressure cap 3 external cylindrical surface is step-like, the maximum cylindrical in top is evenly distributed in one group of gap 47, for installing, dismantle level Four pressure cap 3, the maximum cylindrical bottom of level Four pressure cap 3 is provided with the 3rd external screw thread 45 being connected with three grades of retracting cylinders 4, for compression plate radical sealing ring 23, one section of face of cylinder 2 46 is arranged at the 3rd external screw thread 45 bottom, and when packing seal circle 23 weares and teares, the face of cylinder 2 46 can be used to compression plate radical sealing ring 23.
nullAs shown in Figure 9，The endoporus of up/down perforation it is provided with in the middle of described three grades of retracting cylinders 4，Hole size is identical with level Four supporting positive cover 15 external diameter，The oral area of three grades of retracting cylinders 4 has one section of female thread 1 being connected with level Four pressure cap 3，One section of stepped hole 1 is arranged at female thread 1 bottom，For mounting disc radical sealing ring 23，One section of female thread 2 50 installing level Four fairlead 7 is arranged at stepped hole 49 bottom，Female thread 2 50 bottom is provided with unthreaded hole 1 for sealing surface，Three grades of retracting cylinder 4 top cylindricals are provided with that the face of cylinder 3 52 is long and precision is high，For sealing surface，One group of driving hole 2 53 radially is arranged at bottom, the face of cylinder 3 52，It is used for dismounting three grades of supporting positive covers 16，Three grades of retracting cylinder 4 bottoms are provided with the 3rd external screw thread 54，There is one group of the 3rd screwed hole 55 three grades of retracting cylinder 4 lower surfaces，In 3rd screwed hole 55, holding screw 20 is installed，Play the effect of locking thread.
As shown in Figure 10, being provided with the 3rd endoporus 56 of up/down perforation in the middle of described level Four fairlead 7, the 3rd endoporus 56 is equivalently-sized with the second endoporus 44 of level Four pressure cap 3；An annular groove 3 57 is had in the middle of 3rd endoporus 56 of level Four fairlead 7, wear ring 22 is installed in annular groove 3 57, level Four fairlead 7 top cylindrical is provided with the 4th external screw thread 59 being connected with three grades of retracting cylinders 4, it is used for supporting packing seal circle 23, there is one group of blind hole 58 level Four fairlead 7 upper surface, for installing, dismantle level Four fairlead 7, the 4th external screw thread 59 bottom cylindrical is the face of cylinder 4 60, and this face of cylinder 4 60 can put in the unthreaded hole 1 of three grades of retracting cylinders 4.
As shown in figure 11, described outer cylinder 12 top is cylindric cylinder barrel 65, its hole size is identical with the external diameter of one-level supporting positive cover 18, outer cylinder 12 oral area has one section of female thread 3 61 being connected with one-level pressure cap 10, one section of stepped hole 2 62 is arranged at female thread 3 61 bottom, for mounting disc radical sealing ring 23, one section of female thread 4 63 is arranged at stepped hole 2 62 bottom, it is used for one-level fairlead 13 is installed, female thread 4 63 bottom is unthreaded hole 2 64, long and precision is high, for sealing surface, one circlip groove 66 is arranged at unthreaded hole 2 64 bottom, installing hole back-up ring 24 in circlip groove 66.Described outer cylinder 12 lower weld has flange 67, and flange 67 cylindrical size is consistent with the rising four-way external diameter of connection, and the end face of flange 67 is provided with one group of bolt hole 68 being connected with rising four-way.
As shown in figure 12, the endoporus top of described level Four supporting positive cover 15 is the female thread 4 69 being connected with level Four retracting cylinder 2, and female thread 4 69 bottom is provided with diameter less than externally threaded unthreaded hole 2 70；The hole size of level Four supporting positive cover cylindrical 73 diameter and three grades of retracting cylinders 4 is identical, and level Four supporting positive cover cylindrical 73 is provided with annular groove 4 72, installs wear ring 22 in annular groove 4 72；There is one group of screw thread via 71 level Four supporting positive cover 15 lower surface, is used for installing holding screw 20.
In sum, this telescoping tube stroke provided by the invention is 11.5 meters to 12 meters, disposable can remove whole oil pipe, and work efficiency is high；Meanwhile, this telescoping tube is multi-stage telescopic structure, retracts and is highly only 3.6 meters, it is simple to installation and transportation.
Exemplified as above is only illustration to the present invention, is not intended that the restriction to protection scope of the present invention, every belongs within protection scope of the present invention with the same or analogous design of the present invention.
Claims (9)
- null1. a telescoping tube，It is characterized in that: include the level Four retracting cylinder (2) being set with successively from inside to outside、Three grades of retracting cylinders (4)、Two grades of retracting cylinders (6)、One-level retracting cylinder (14) and outer cylinder (12)，Described outer cylinder (12) bottom is provided with ring flange，One-level pressure cap (10) from top to bottom it is connected successively between outer cylinder (12) oral area with one-level retracting cylinder (14)，Packing seal circle (23)、One-level fairlead (13)，Described one-level retracting cylinder (14) bottom connects one-level supporting positive cover (18)，Two grades of pressure caps (8) from top to bottom it are sequentially connected with between one-level retracting cylinder (14) upper end and two grades of retracting cylinders (6)、Packing seal circle (23)、Two grades of fairleads (11)，Two grades of retracting cylinder (6) bottoms connect two grades of supporting positive covers (17)，Three grades of pressure caps (5) from top to bottom it are sequentially connected with between two grades of retracting cylinder (6) upper ends and three grades of retracting cylinders (4)、Packing seal circle (23)、Three grades of fairleads (9)，Three grades of retracting cylinder (4) bottoms connect three grades of supporting positive covers (16)，Level Four pressure cap (3) from top to bottom it is sequentially connected with between three grades of retracting cylinder (4) upper ends and level Four retracting cylinder (2)、Packing seal circle (23)、Level Four fairlead (7)，Level Four retracting cylinder (2) bottom connects level Four supporting positive cover (15)，Level Four retracting cylinder (2) upper end connects upper flange (1).
- 2. telescoping tube as claimed in claim 1, it is characterised in that: described upper flange (1) cylindrical size is identical with standard wellhead flange；From top to bottom it is followed successively by top endoporus (25), middle part endoporus (26) and lower internal thread hole (27) in the middle of upper flange (1), top endoporus (25) is identical with bore diameter of preventer, and lower internal thread hole (27) are connected with level Four retracting cylinder (2)；The bottom cylindrical (29) of upper flange (1) is radially evenly equipped with one group of first screwed hole (28), holding screw (20) is installed in the first screwed hole (28), the maximum cylindrical of upper flange (1) is radially provided with two liquid outlets (33), liquid outlet (33) oral area is provided with a female thread (34), and the maximum cylindrical of upper flange (1) is the uniform several bolts hole (32) being connected with upper chuck axially；Upper flange (1) upper end is provided with boss (30), and the upper plane of boss (30) is provided with a sealed groove (31).
- 3. telescoping tube as claimed in claim 1, it is characterized in that: in the middle of described level Four retracting cylinder (2), be provided with first endoporus (35) of up/down perforation, first endoporus (35) is identical with the latus rectum of upper flange (1), level Four retracting cylinder (2) top cylindrical is provided with "O"-ring groove (36), ring recess (36) interior mounting O-shaped rings (19), cylindrical bottom, level Four retracting cylinder (2) top is provided with the first external screw thread (37) and is connected with upper flange (1)；First external screw thread (37) bottom is provided with the face of cylinder one (38), one group of driving hole one (39) radially is arranged at bottom, the face of cylinder one (38), level Four retracting cylinder (2) bottom is provided with the second external screw thread (40), there is the second screwed hole (41) a group uniform level Four retracting cylinder (2) lower surface, is provided with holding screw (20) in the second screwed hole (41).
- 4. telescoping tube as claimed in claim 1, it is characterized in that: being provided with second endoporus (44) of up/down perforation in the middle of described level Four pressure cap (3), the second endoporus (44) is identical with the cylindrical latus rectum of three grades of retracting cylinders (4)；Level Four pressure cap (3) oral area has an annular groove one (42), installs dust ring (21) in annular groove one (42)；It is provided with annular groove two (43) in the middle of level Four pressure cap (3), wear ring (22) is installed in annular groove two (43)；Level Four pressure cap (3) external cylindrical surface is step-like, the maximum cylindrical in top is evenly distributed in one group of gap (47), the maximum cylindrical bottom of level Four pressure cap (3) is provided with the 3rd external screw thread (45) being connected with three grades of retracting cylinders (4), and one section of face of cylinder two (46) is arranged at the 3rd external screw thread (45) bottom.
- null5. telescoping tube as claimed in claim 1，It is characterized in that: in the middle of described three grades of retracting cylinders (4), be provided with the endoporus of up/down perforation，Hole size is identical with level Four supporting positive cover (15) external diameter，The oral area of three grades of retracting cylinders (4) has one section of female thread one (48) being connected with level Four pressure cap (3)，One section of stepped hole one (49) is arranged at female thread one (48) bottom，One section of female thread two (50) installing level Four fairlead (7) is arranged at stepped hole one (49) bottom，Female thread two (50) bottom is provided with unthreaded hole one (51)，Three grades of retracting cylinder (4) top cylindricals are provided with the face of cylinder three (52)，One group of driving hole two (53) radially is arranged at bottom, the face of cylinder three (52)，Three grades of retracting cylinder (4) bottoms are provided with the 3rd external screw thread (54)，There is one group of the 3rd screwed hole (55) three grades of retracting cylinder (4) lower surfaces，In 3rd screwed hole (55), holding screw (20) is installed.
- 6. the telescoping tube as described in claim 1 or 4, it is characterized in that: be provided with the 3rd endoporus (56) of up/down perforation in the middle of described level Four fairlead (7), the 3rd endoporus (56) is equivalently-sized with second endoporus (44) of level Four pressure cap (3)；An annular groove three (57) is had in the middle of 3rd endoporus (56) of level Four fairlead (7), wear ring (22) is installed in annular groove three (57), level Four fairlead (7) top cylindrical is provided with the 4th external screw thread (59) being connected with three grades of retracting cylinders (4), there is one group of blind hole (58) level Four fairlead (7) upper surface, and the 4th external screw thread (59) bottom cylindrical is the face of cylinder four (60).
- 7. telescoping tube as claimed in claim 1, it is characterized in that: described outer cylinder (12) top is cylindric cylinder barrel (65), its hole size is identical with the external diameter of one-level supporting positive cover (18), outer cylinder (12) oral area has one section of female thread three (61) being connected with one-level pressure cap (10), one section of stepped hole two (62) is arranged at female thread three (61) bottom, one section of female thread four (63) is arranged at stepped hole two (62) bottom, female thread four (63) bottom is unthreaded hole two (64), one circlip groove (66) is arranged at unthreaded hole two (64) bottom, the interior installing hole back-up ring (24) of circlip groove (66).
- 8. telescoping tube as claimed in claim 1, it is characterized in that: described outer cylinder (12) lower weld has flange (67), flange (67) cylindrical size is consistent with the rising four-way external diameter of connection, and the end face of flange (67) is provided with one group of bolt hole (68) being connected with rising four-way.
- 9. telescoping tube as claimed in claim 1, it is characterized in that: the endoporus top of described level Four supporting positive cover (15) is the female thread four (69) being connected with level Four retracting cylinder (2), female thread four (69) bottom is provided with diameter less than externally threaded unthreaded hole two (70)；The hole size of level Four supporting positive cover cylindrical (73) diameter and three grades of retracting cylinders (4) is identical, level Four supporting positive cover cylindrical (73) is provided with annular groove four (72), installs wear ring (22) in annular groove four (72)；There is one group of screw thread via (71) level Four supporting positive cover (15) lower surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410792973.3A CN105757381A (en) | 2014-12-20 | 2014-12-20 | Telescopic tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410792973.3A CN105757381A (en) | 2014-12-20 | 2014-12-20 | Telescopic tube |
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| Publication Number | Publication Date |
|---|---|
| CN105757381A true CN105757381A (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410792973.3A Withdrawn CN105757381A (en) | 2014-12-20 | 2014-12-20 | Telescopic tube |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106181936A (en) * | 2016-08-30 | 2016-12-07 | 安吉印象家具有限公司 | The most continuously adjustable box |
| CN108106490A (en) * | 2017-11-26 | 2018-06-01 | 四川华庆机械有限责任公司 | A kind of big impulse stroke balanced controls |
| CN112443714A (en) * | 2020-11-10 | 2021-03-05 | 彩虹（合肥）液晶玻璃有限公司 | Water absorption air pipe expansion device for grinding liquid crystal glass |
| CN114526387A (en) * | 2022-02-17 | 2022-05-24 | 中海油能源发展装备技术有限公司 | Instrument flange for high-temperature and high-pressure pipeline and manufacturing method |
-
2014
- 2014-12-20 CN CN201410792973.3A patent/CN105757381A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106181936A (en) * | 2016-08-30 | 2016-12-07 | 安吉印象家具有限公司 | The most continuously adjustable box |
| CN108106490A (en) * | 2017-11-26 | 2018-06-01 | 四川华庆机械有限责任公司 | A kind of big impulse stroke balanced controls |
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Application publication date: 20160713 |