CN204628181U - A kind of telescopic pipe - Google Patents
A kind of telescopic pipe Download PDFInfo
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- CN204628181U CN204628181U CN201520267610.8U CN201520267610U CN204628181U CN 204628181 U CN204628181 U CN 204628181U CN 201520267610 U CN201520267610 U CN 201520267610U CN 204628181 U CN204628181 U CN 204628181U
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Abstract
The utility model specifically provides a kind of telescopic pipe, comprise the level Four retracting cylinder be set with successively from inside to outside, three grades of retracting cylinders, secondary retracting cylinder, one-level retracting cylinder and outer cylinder, outer cylinder bottom is provided with flange plate, one-level pressure cap is connected from top to bottom successively between outer cylinder oral area with one-level retracting cylinder, packing seal circle, one-level guide sleeve, one-level retracting cylinder bottom connects one-level supporting positive cover, one-level retracting cylinder upper end is connected secondary pressure cap from top to bottom successively with between secondary retracting cylinder, packing seal circle, secondary guide sleeve, secondary retracting cylinder bottom connects secondary supporting positive cover, secondary retracting cylinder, three grades of retracting cylinders are identical with one-level telescopic cylinder structure, level Four retracting cylinder bottom connects level Four supporting positive cover, level Four retracting cylinder upper end connects upper flange.The stroke of this telescopic pipe is 11.5 meters to 12 meters, and disposablely can remove whole oil pipe, working efficiency is high; Meanwhile, this telescopic pipe is multi-stage telescopic structure, retracts and is highly only 3.6 meters, be convenient to installation and transportation.
Description
Technical field
The utility model belongs to oil field operation device under pressure technical field, is specifically related to a kind of telescopic pipe, for bearing medium and pressure in well during static-sealing type Operating Pressure, and flexible raises and decentralizes oil pipe by it.
Background technique
In oil well repairing operation, operation device under 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.Motive sealing and static seal two type can be divided into by the sealing means between tubing string and top hydraulic control well plugging device or annular preventer.Be motive sealing between tubing string and top hydraulic control well plugging device or annular preventer, large to the damage of Sealing, and easily cause operate miss, there is accident.And static seal mode efficiently solves these shortcomings that motive sealing exists.
But must use telescopic pipe at existing static seal workover operation device with pressure in operation process, the telescopic pipe of current domestic Long travel is still blank, can not provide the Long travel telescopic pipe of a disposable derivation whole oil pipe.
Model utility content
The purpose of this utility model overcomes the problem that existing static seal operation device under pressure does not have the Long travel telescopic pipe of the disposable derivation of energy whole oil pipe in operation process.
For this reason, the utility model provides a kind of telescopic pipe, comprise the level Four retracting cylinder be set with successively from inside to outside, three grades of retracting cylinders, secondary retracting cylinder, one-level retracting cylinder and outer cylinder, described outer cylinder bottom is provided with flange plate, one-level pressure cap is connected from top to bottom successively between outer cylinder oral area with one-level retracting cylinder, packing seal circle, one-level guide sleeve, described one-level retracting cylinder bottom connects one-level supporting positive cover, one-level retracting cylinder upper end is connected secondary pressure cap from top to bottom successively with between secondary retracting cylinder, packing seal circle, secondary guide sleeve, secondary retracting cylinder bottom connects secondary supporting positive cover, three grades of pressure caps are connected from top to bottom successively between secondary retracting cylinder upper end with three grades of retracting cylinders, packing seal circle, three grades of guide sleeves, three grades of retracting cylinder bottoms connect three grades of supporting positive covers, three grades of retracting cylinder upper ends are connected level Four pressure cap from top to bottom successively with between level Four retracting cylinder, packing seal circle, level Four guide sleeve, 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; Be followed successively by top endoporus, middle part endoporus and lower internal thread hole from top to bottom 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 tapped hole, in first tapped hole, Cock screw is installed, the maximum outer circle diameter of upper flange is to being provided with two liquid outlet openings, and liquid outlet opening oral area is provided with an internal thread, the maximum cylindrical axially uniform several bolts hole be connected with upper chuck of upper flange; Upper flange upper end portion is provided with boss, and the upper plane of boss is provided with a sealed groove.
The first endoporus of up/down perforation 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, and install "O"-ring in ring recess, cylindrical bottom, level Four retracting cylinder top is provided with the first outside thread and is connected with upper flange; First outside thread bottom is provided with cylndrical surface one, and the driving hole one of one group of radial direction is arranged at bottom, cylndrical surface one, and level Four retracting cylinder bottom is provided with the second outside thread, and there is one group of second uniform tapped hole level Four retracting cylinder lower end surface, is provided with Cock screw in the second tapped hole.
Be provided with the second endoporus of up/down perforation in the middle of described level Four pressure cap, the second endoporus is identical with the cylindrical latus rectum of three grades of retracting cylinders; Level Four pressure cap oral area has an annular groove one, installs dust ring in annular groove one; Be provided with annular groove two in the middle of level Four pressure cap, in annular groove two, wear ring be installed; 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 outside thread be connected with three grades of retracting cylinders, and one section of cylndrical surface two is arranged at the 3rd outside thread bottom.
The endoporus of up/down perforation 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 internal thread one be connected with level Four pressure cap, one section of step hole one is arranged at internal thread one bottom, one section of internal thread two installing level Four guide sleeve is arranged at step hole bottom, internal thread two bottom is provided with unthreaded hole one, three grades of retracting cylinder top cylindricals are provided with cylndrical surface three, the driving hole two of one group of radial direction is arranged at bottom, cylndrical surface three, three grades of retracting cylinder bottoms are provided with the 3rd outside thread, there is one group of the 3rd tapped hole three grades of retracting cylinder lower end surfaces, in 3rd tapped hole, Cock screw is installed.
Be provided with the 3rd endoporus of up/down perforation in the middle of described level Four guide sleeve, 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 guide sleeve, in annular groove three, wear ring is installed, level Four guide sleeve top cylindrical is provided with the 4th outside thread be connected with three grades of retracting cylinders, and there is one group of blind hole level Four guide sleeve upper-end surface, all round thread portions cylindrical be cylndrical surface 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 internal thread three be connected with one-level pressure cap, one section of step hole two is arranged at internal thread three bottom, one section of internal thread four is arranged at step hole two bottom, internal thread four bottom is unthreaded hole two, and a circlip groove is arranged at unthreaded hole two bottom, mounting hole back-up ring in circlip groove.
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 be connected with rising four-way.
The endoporus top of described level Four supporting positive cover is the internal thread four be connected with level Four retracting cylinder, internal thread four bottom is provided with diameter and is less than externally threaded unthreaded hole two, level Four supporting positive cover outside diameter is identical with the hole size of three grades of retracting cylinders, level Four supporting positive cover cylindrical is provided with annular groove four, install wear ring in annular groove four, there is one group of screw thread via hole level Four supporting positive cover lower end surface.
The beneficial effects of the utility model:
(1) this telescopic pipe stroke that the utility model provides is 11.5 meters to 12 meters, and disposablely can remove whole oil pipe, working efficiency is high;
(2) this telescopic pipe that the utility model provides is multi-stage telescopic structure, retracts and is highly only 3.6 meters, be convenient to installation and transportation.
Below with reference to accompanying drawing, the utility model is described in further details.
Accompanying drawing explanation
Fig. 1 is telescopic pipe scheme of installation.
Fig. 2 is flexible pipe structure schematic diagram.
Fig. 3 is that telescopic pipe stretches out phase diagram.
Fig. 4 is upper flange schematic diagram.
Fig. 5 is upper flange plan 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 plan view.
Fig. 9 is three grades of retracting cylinder schematic diagram.
Figure 10 is level Four guide sleeve 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, secondary retracting cylinder; 7, level Four guide sleeve; 8, secondary pressure cap; 9, three grades of pressure caps; 10, one-level pressure cap; 11, secondary guide sleeve; 12, outer cylinder; 13, one-level guide sleeve; 14, first stage piston cylinder; 15, level Four supporting positive cover; 16, three grades of supporting positive covers; 17, secondary supporting positive cover; 18, one-level supporting positive cover; 19, O type circle; 20, Cock 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 tapped hole; 29 cylindricals; 30, boss; 31, sealed groove; 32, bolt hole; 33, liquid outlet opening; 34, internal thread; 35, the first endoporus; 36, ring recess; 37, the first outside thread; 38, cylndrical surface one; 39, driving hole one; 40, the second outside thread; 41, the second tapped hole; 42, annular groove one; 43, annular groove two; 44, the second endoporus; 45, the 3rd outside thread; 46, cylndrical surface two; 47, gap; 48, internal thread one; 49, step hole; 50, internal thread two; 51, unthreaded hole one; 52, cylndrical surface three; 53, driving hole two; 54, the 3rd outside thread; 55, the 3rd tapped hole; 56, the 3rd endoporus; 57, annular groove three; 58, blind hole; 59, the 4th outside thread; 60, cylndrical surface four; 61, internal thread three; 62, step hole two; 63, internal thread four; 64, unthreaded hole two; 65, cylinder barrel; 66, circlip groove; 67, flange; 68, bolt hole; 69, internal thread four; 70, unthreaded hole two; 71, screw thread via hole; 72, annular groove four; 73, level Four supporting positive cover cylindrical; 74, hydraulic control well plugging device; 75, upper chuck; 76, four-way is raised; 77, lower chuck; 78, quick preventer.
Embodiment
Embodiment 1:
In operation process, the problem of the Long travel telescopic pipe of the disposable derivation of energy whole oil pipe is not had in order to overcome existing static seal workover operation device with pressure, present embodiments provide a kind of as Fig. 1, telescopic pipe shown in Fig. 2 and Fig. 3, comprise the level Four retracting cylinder 2 be set with successively from inside to outside, three grades of retracting cylinders 4, secondary retracting cylinder 6, one-level retracting cylinder 14 and outer cylinder 12, described outer cylinder 12 bottom is provided with flange plate, outer cylinder 12 oral area is connected one-level pressure cap 10 from top to bottom successively with between one-level retracting cylinder 14, packing seal circle 23, one-level guide sleeve 13, described one-level retracting cylinder 14 bottom connects one-level supporting positive cover 18, one-level retracting cylinder 14 upper end is connected secondary pressure cap 8 from top to bottom successively with between secondary retracting cylinder 6, packing seal circle 23, secondary guide sleeve 11, secondary retracting cylinder 6 bottom connects secondary supporting positive cover 17, three grades of pressure caps 5 are connected from top to bottom successively between secondary retracting cylinder 6 upper end with three grades of retracting cylinders 4, packing seal circle 23, three grades of guide sleeves 9, three grades of retracting cylinder 4 bottoms connect three grades of supporting positive covers 16, three grades of retracting cylinder 4 upper ends are connected level Four pressure cap 3 from top to bottom successively with between level Four retracting cylinder 2, packing seal circle 23, level Four guide sleeve 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 shown in Figure 1, connect upper chuck 75 and hydraulic control well plugging device 74 above telescopic pipe, below connects rising four-way 76, lower chuck 77 and quick preventer 78.
During upper lifting pipe post, stretch out process: close top hydraulic control well plugging device 74 or annular preventer, open the quick preventer 78 in bottom and lower chuck 77, namely telescopic pipe inside be communicated with sleeve pipe, bear medium and pressure in well, clamp tubing string by media drive upper chuck 75 in well, and drive tubing string to rise.After arriving specified position, external force is relied on to be held by telescopic pipe.Retraction process: quick preventer 78 and the lower chuck 77 of closing telescopic pipe bottom, the medium of telescopic pipe inside is recycled in sleeve pipe by return line, telescopic pipe internal pressure reduces, upper chuck 75 unclamps, open top hydraulic control well plugging device 74 or annular preventer again, then by external force, telescopic pipe is pulled down to lower specified position.
When transferring tubing string, program is just in time contrary, stretches out process: close the quick preventer 78 in telescopic pipe bottom and lower chuck 77, telescopic pipe interior media relies on return line to be recycled in sleeve pipe, telescopic pipe internal pressure reduces, and upper chuck 75 unclamps, and drives telescopic pipe to rise to specified position by external force.Retraction process: close top hydraulic control well plugging device 74 or annular preventer, open the quick preventer 78 in bottom again, namely telescopic pipe inside be communicated with sleeve pipe, bear medium and pressure in well, tubing string is clamped by media drive upper chuck 75 in well, lower chuck 77 unclamps simultaneously, then by external force, telescopic pipe and tubing string is pressed to specified position.
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; Is followed successively by top endoporus 25, middle part endoporus 26 and lower internal thread hole 27 from top to bottom 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 type circle 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 tapped hole 28, in first tapped hole 28, Cock screw 20 is installed, play locking thread effect, the maximum outer circle diameter of upper flange 1 is to being provided with two liquid outlet openings 33, liquid outlet opening 33 oral area is provided with an internal thread 34, the maximum cylindrical axially uniform several bolts hole 32 be connected with upper chuck of upper flange 1; Upper flange 1 upper end portion 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 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 type ring recess 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 outside thread 37 and is connected with upper flange 1; First outside thread 37 bottom is provided with a segment length and the high cylndrical surface of precision 1 is sealing surface, the driving hole 1 of one group of radial direction is arranged at bottom, cylndrical surface 1, be used for dismounting level Four supporting positive cover 15, level Four retracting cylinder 2 bottom is provided with the second outside thread 40, be connected with level Four supporting positive cover 15, level Four retracting cylinder 2 lower end surface has in one group of uniform second tapped hole 41, second tapped hole 41 and is provided with Cock screw 20, plays locking thread effect.
As shown in Figure 7, Figure 8, the second endoporus 44, second endoporus 44 being provided with up/down perforation in the middle of described level Four pressure cap 3 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; Be provided with annular groove 2 43 in the middle of level Four pressure cap 3, in annular groove 2 43, wear ring 22 be installed; 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, dismantling level Four pressure cap 3, the maximum cylindrical bottom of level Four pressure cap 3 is provided with the 3rd outside thread 45 be connected with three grades of retracting cylinders 4, be used for compression plate radical seal ring 23, one section of cylndrical surface 2 46 is arranged at the 3rd outside thread 45 bottom, and when packing seal circle 23 weares and teares, cylndrical surface 2 46 can be used to compression plate radical seal ring 23.
As shown in Figure 9, the endoporus of up/down perforation 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 internal thread 1 be connected with level Four pressure cap 3, one section of step hole 1 is arranged at internal thread 1 bottom, be used for mounting disc radical seal ring 23, one section of internal thread 2 50 installing level Four guide sleeve 7 is arranged at step hole 49 bottom, internal 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 cylndrical surface 3 52 is long and precision is high, for sealing surface, the driving hole 2 53 of one group of radial direction is arranged at bottom, cylndrical surface 3 52, be used for dismounting three grades of supporting positive covers 16, three grades of retracting cylinder 4 bottoms are provided with the 3rd outside thread 54, there is one group of the 3rd tapped hole 55 three grades of retracting cylinder 4 lower end surfaces, in 3rd tapped hole 55, Cock screw 20 is installed, play locking thread.
As shown in Figure 10, the 3rd endoporus the 56, three endoporus 56 being provided with up/down perforation in the middle of described level Four guide sleeve 7 is measure-alike 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 guide sleeve 7, in annular groove 3 57, wear ring 22 is installed, level Four guide sleeve 7 top cylindrical is provided with the 4th outside thread 59 be connected with three grades of retracting cylinders 4, be used for supporting disk radical seal ring 23, there is one group of blind hole 58 level Four guide sleeve 7 upper-end surface, for installing, dismounting level Four guide sleeve the 7, four outside thread 59 bottom cylindrical is cylndrical surface 4 60, and this cylndrical surface 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 internal thread 3 61 be connected with one-level pressure cap 10, one section of step hole 2 62 is arranged at internal thread 3 61 bottom, be used for mounting disc radical seal ring 23, one section of internal thread 4 63 is arranged at step hole 2 62 bottom, be used for one-level guide sleeve 13 is installed, internal thread 4 63 bottom is unthreaded hole 2 64, long and precision is high, is sealing surface, a circlip groove 66 is arranged at unthreaded hole 2 64 bottom, mounting 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 be connected with rising four-way.
As shown in figure 12, the endoporus top of described level Four supporting positive cover 15 is the internal thread 4 69 be connected with level Four retracting cylinder 2, and internal thread 4 69 bottom is provided with diameter and is less than externally threaded unthreaded hole 2 70; Level Four supporting positive cover cylindrical 73 diameter is identical with the hole size of three grades of retracting cylinders 4, 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 hole 71 level Four supporting positive cover 15 lower end surface, is used for installing Cock screw 20.
In sum, this telescopic pipe stroke that the utility model provides is 11.5 meters to 12 meters, and disposablely can remove whole oil pipe, working efficiency is high; Meanwhile, this telescopic pipe is multi-stage telescopic structure, retracts and is highly only 3.6 meters, be convenient to installation and transportation.
More than exemplifying is only illustrate of the present utility model, does not form the restriction to protection domain of the present utility model, everyly all belongs within protection domain of the present utility model with the same or analogous design of the utility model.
Claims (9)
1. a telescopic pipe, it is characterized in that: comprise the level Four retracting cylinder (2) be set with successively from inside to outside, three grades of retracting cylinders (4), secondary retracting cylinder (6), one-level retracting cylinder (14) and outer cylinder (12), described outer cylinder (12) bottom is provided with flange plate, one-level pressure cap (10) is connected successively from top to bottom between outer cylinder (12) oral area with one-level retracting cylinder (14), packing seal circle (23), one-level guide sleeve (13), described one-level retracting cylinder (14) bottom connects one-level supporting positive cover (18), secondary pressure cap (8) is connected from top to bottom successively between one-level retracting cylinder (14) upper end with secondary retracting cylinder (6), packing seal circle (23), secondary guide sleeve (11), secondary retracting cylinder (6) bottom connects secondary supporting positive cover (17), three grades of pressure caps (5) are connected from top to bottom successively between secondary retracting cylinder (6) upper end with three grades of retracting cylinders (4), packing seal circle (23), three grades of guide sleeves (9), three grades of retracting cylinder (4) bottoms connect three grades of supporting positive covers (16), three grades of retracting cylinder (4) upper ends are connected level Four pressure cap (3) from top to bottom successively with between level Four retracting cylinder (2), packing seal circle (23), level Four guide sleeve (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. telescopic pipe as claimed in claim 1, is characterized in that: described upper flange (1) cylindrical size is identical with standard wellhead flange; Be followed successively by top endoporus (25), middle part endoporus (26) and lower internal thread hole (27) in the middle of upper flange (1) from top to bottom, 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 tapped hole (28), Cock screw (20) is installed in the first tapped hole (28), the maximum outer circle diameter of upper flange (1) is to being provided with two liquid outlet openings (33), liquid outlet opening (33) oral area is provided with an internal thread (34), the maximum cylindrical axially uniform several bolts hole (32) be connected with upper chuck of upper flange (1); Upper flange (1) upper end portion is provided with boss (30), and the upper plane of boss (30) is provided with a sealed groove (31).
3. telescopic pipe as claimed in claim 1, it is characterized in that: the first endoporus (35) being provided with up/down perforation 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"-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 outside thread (37) and is connected with upper flange (1); First outside thread (37) bottom is provided with cylndrical surface one (38), the driving hole one (39) of one group of radial direction is arranged at bottom, cylndrical surface one (38), level Four retracting cylinder (2) bottom is provided with the second outside thread (40), there is one group of uniform second tapped hole (41) level Four retracting cylinder (2) lower end surface, is provided with Cock screw (20) in the second tapped hole (41).
4. telescopic pipe as claimed in claim 1, it is characterized in that: the second endoporus (44) being provided with 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); Be provided with annular groove two (43) in the middle of level Four pressure cap (3), in annular groove two (43), wear ring (22) be installed; 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 outside thread (45) be connected with three grades of retracting cylinders (4), and one section of cylndrical surface two (46) is arranged at the 3rd outside thread (45) bottom.
5. telescopic pipe as claimed in claim 1, it is characterized in that: the endoporus being provided with up/down perforation 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 internal thread one (48) be connected with level Four pressure cap (3), one section of step hole one (49) is arranged at internal thread one (48) bottom, one section of internal thread two (50) installing level Four guide sleeve (7) is arranged at step hole one (49) bottom, internal thread two (50) bottom is provided with unthreaded hole one (51), three grades of retracting cylinder (4) top cylindricals are provided with cylndrical surface three (52), the driving hole two (53) of one group of radial direction is arranged at bottom, cylndrical surface three (52), three grades of retracting cylinder (4) bottoms are provided with the 3rd outside thread (54), there is one group of the 3rd tapped hole (55) three grades of retracting cylinder (4) lower end surfaces, in 3rd tapped hole (55), Cock screw (20) is installed.
6. the telescopic pipe as described in claim 1 or 4, it is characterized in that: the 3rd endoporus (56) being provided with up/down perforation in the middle of described level Four guide sleeve (7), the 3rd endoporus (56) is measure-alike 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 guide sleeve (7), in annular groove three (57), wear ring (22) is installed, level Four guide sleeve (7) top cylindrical is provided with the 4th outside thread (59) be connected with three grades of retracting cylinders (4), there is one group of blind hole (58) level Four guide sleeve (7) upper-end surface, and the 4th outside thread (59) bottom cylindrical is cylndrical surface four (60).
7. telescopic pipe 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 internal thread three (61) be connected with one-level pressure cap (10), one section of step hole two (62) is arranged at internal thread three (61) bottom, one section of internal thread four (63) is arranged at step hole two (62) bottom, internal thread four (63) bottom is unthreaded hole two (64), a circlip groove (66) is arranged at unthreaded hole two (64) bottom, the interior mounting hole back-up ring (24) of circlip groove (66).
8. telescopic pipe 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) be connected with rising four-way.
9. telescopic pipe as claimed in claim 1, it is characterized in that: the endoporus top of described level Four supporting positive cover (15) is the internal thread four (69) be connected with level Four retracting cylinder (2), internal thread four (69) bottom is provided with diameter and is less than externally threaded unthreaded hole two (70); Level Four supporting positive cover cylindrical (73) diameter is identical with the hole size of three grades of retracting cylinders (4), 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 hole (71) level Four supporting positive cover (15) lower end surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520267610.8U CN204628181U (en) | 2014-12-20 | 2015-04-29 | A kind of telescopic pipe |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014208095683 | 2014-12-20 | ||
| CN201420809568 | 2014-12-20 | ||
| CN201520267610.8U CN204628181U (en) | 2014-12-20 | 2015-04-29 | A kind of telescopic pipe |
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| Publication Number | Publication Date |
|---|---|
| CN204628181U true CN204628181U (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520267610.8U Active CN204628181U (en) | 2014-12-20 | 2015-04-29 | A kind of telescopic pipe |
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| CN (1) | CN204628181U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587722A (en) * | 2016-03-09 | 2016-05-18 | 崔鲁彬 | Telescopic section tubes of electric screw tube |
| CN105757080A (en) * | 2016-03-18 | 2016-07-13 | 冯卫斌 | Multi-section telescopic rod with self pushing and pulling functions |
-
2015
- 2015-04-29 CN CN201520267610.8U patent/CN204628181U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587722A (en) * | 2016-03-09 | 2016-05-18 | 崔鲁彬 | Telescopic section tubes of electric screw tube |
| CN105757080A (en) * | 2016-03-18 | 2016-07-13 | 冯卫斌 | Multi-section telescopic rod with self pushing and pulling functions |
| CN105757080B (en) * | 2016-03-18 | 2018-10-23 | 冯卫斌 | It is a kind of that there is the Multi-section telescopic rod that voluntarily push and pull is combined |
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