CN204098837U - Drag for pipe - Google Patents
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- CN204098837U CN204098837U CN201420460828.0U CN201420460828U CN204098837U CN 204098837 U CN204098837 U CN 204098837U CN 201420460828 U CN201420460828 U CN 201420460828U CN 204098837 U CN204098837 U CN 204098837U
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Abstract
The open one of the utility model drags for pipe, relates to down-hole fishing device technical field, invents for solving in the lower problem of the efficiency of underground fishing object.Describedly drag for pipe, comprise connection and connect platform, with described be connected connect that platform connects drag for tube shell, also comprise: shaft assembly, drag for the inside of tube shell described in being positioned at, its upper end connects with the described bottom connecing platform that is connected, lower end and slips anatomical connectivity, dragged for thing for clamping with described slips respective outer side edges; Slips structure, drags for the inside of tube shell described in being positioned at, being sheathed on the outer wall of described shaft assembly, being dragged for object for blocking; Correcting structure, is positioned at and drags on tube shell described in below described slips structure, dragged for object for correcting, so that described slips structure is blocked and describedly dragged for object.What the utility model provided drags for pipe for falling into the salvaging of the fish (as drilling rod or coiled tubing) in drilling well.
Description
Technical field
The utility model relates to down-hole fishing device technical field, particularly relates to one and drags for pipe.
Background technology
In wellbore construction process, because operate miss or other reasons can cause fish (as drilling rod or coiled tubing) to drop in drilling well, in order to not affect construction speed, need to pull the fish dropped in drilling well out drilling well.
In order to solve the problem; prior art provides a kind of hydraulic retractable fishing spear; it comprise separate card structure, for the protection of internal construction drag for pipe outer wall, for dragged for shaft that thing is fixedly connected with and for promoting the hydraulic power part that shaft is moved, wherein, shaft be provided with slips.The salvaging principle of hydraulic retractable fishing spear is that the hydraulic coupling utilizing liquid to produce promotes shaft and moves to and dragged in the body of thing, slips inner support in shaft is caught and is dragged for the inwall of thing, make shaft and dragged for thing to interfix, force in this hydraulic retractable fishing spear again, dragged for thing and shift out drilling well with hydraulic retractable fishing spear.
In prior art, at least there are the following problems: when shaft is deeply dragged in the body of thing, slips inner support is caught and is pulled out in the process of drilling well by the inwall dragging for thing, owing to being dragged for thing and slips is interconnected with uncertain angle, therebetween docking good degree is poor, causes success rate lower.
Utility model content
The utility model provides one to drag for pipe, can solve in the lower problem of the efficiency of underground fishing object.
For achieving the above object, the utility model adopts following technical scheme:
One drags for pipe, comprises connection and connects platform, with described be connected connect that platform connects drag for tube shell, also comprise:
Shaft assembly, drags for the inside of tube shell described in being positioned at, its upper end connects with the described bottom connecing platform that is connected, and lower end and slips anatomical connectivity are dragged for thing for clamping with described slips respective outer side edges;
Slips structure, drags for the inside of tube shell described in being positioned at, being sheathed on the outer wall of described shaft assembly, being dragged for object for blocking;
Correcting structure, is positioned at and drags on tube shell described in below described slips structure, dragged for object for correcting, so that described slips structure is blocked and describedly dragged for object.
Preferably, described correcting structure comprises guiding pipe,
Described guiding pipe is positioned at and drags on the inwall of tube shell described in below described slips structure, described inwall has towards described projection of dragging for the direction, axis of pipe, drags for the tubular structure of bore described in formation internal diameter is less than.
Preferably, described guiding pipe tubular structure and describedly dragged for the mating shapes of object.
Preferably, described correcting structure also comprises tube pulling mouth, described tube pulling mouth is opened in the below of described guiding pipe and drags for the bottom of tube shell described in being positioned at, described tube pulling mouth for described guiding pipe and described in drag for pipe the hatch frame that is communicated with of inner space, described hatch frame is that circumferentially spiral one encloses the top to described starting point with described bottom sides of dragging for tube shell along for starting point.
Preferably, described slips structure comprises limited block, piston and slips from top to bottom successively, the outer peripheral face of described limited block and described piston is coated with can and forms an open column shape structure, described limited block is positioned at the top of described open column shape structure, described piston is positioned at the bottom of described open column shape structure, described slips is fixedly connected with the drain pan of described open column shape structure, the inner circumferential of described open column shape structure is connected with the periphery of described shaft assembly, and described slips is the column structure of the outer peripheral face being sheathed on described shaft assembly.
Preferably, described shaft assembly comprises:
Cylinder sleeve is open column shape structure, and the upper end of described cylinder sleeve connects platform connect with described connection, and lower end is connected with described shaft, and described limited block is positioned at middle part or the medium position partially of described cylinder sleeve, and described piston is positioned at the lower end of described cylinder sleeve;
Fluid cylinder, is fixedly connected with the outer peripheral face of described cylinder sleeve, and between described limited block and piston, the outer peripheral face of described fluid cylinder is connected with described can;
Shaft, its upper end is connected with the lower end of described cylinder sleeve, and the outer peripheral face of lower end and the inner peripheral surface of described slips are socketed.
Preferably, described cylinder sleeve offers hydraulic pressure hole, described hydraulic pressure hole is between described fluid cylinder and described piston.
Preferably, the center of described shaft offers and is communicated with relief hole from top to bottom, and the upper end of described relief hole is communicated with described cylinder sleeve, and lower end is communicated with the space in described correcting structure.
Preferably, all sealing ring is installed between described limited block and described cylinder sleeve, between described piston and described cylinder sleeve and between described fluid cylinder and described can.
Preferably, described shaft assembly is connected with the described tube shell that drags for by fixation kit structure.
What the utility model provided drags for pipe, correcting structure is utilized to be inserted in and to drag in pipe shell body by dragging for thing and correct its coordinating with shaft assembly, utilize hydraulic coupling by slips structural embeddedness by the fit clearance of dragging between thing and shaft assembly, make to be dragged for thing and shaft assembly keeps mutually firm in salvaging process.Particularly, to drag for pipe gos deep in drilling well, termination by dragging for thing is contacted with the correcting structure dragged on pipe shell body, correcting structure forces to be entered by the termination of dragging for thing and drags in pipe shell body, and utilize the inner surface structure adjustment of dragging for pipe shell body to be dragged for the relative position of the inner circumferential of thing and shaft assembly, hydraulic coupling is applied again to dragging in tube shell, slip mechanism embeds by the fit clearance of dragging between thing and shaft assembly under action of hydraulic force, its periphery contacts with by the inner circumferential of dragging for thing, inner circumferential contacts with the periphery of shaft assembly, tightly fix and dragged for thing and shaft assembly, dragged for thing and shifted out drilling well with dragging for pipe.In prior art, owing to being dragged for thing and slips is interconnected with uncertain angle, docking good degree is therebetween poor, causes success rate lower.Compare with prior art, the Guan Shangyu that drags for provided due to this programme is provided with correcting structure by the one end of dragging for thing contact, dragged for the inwall of thing and slips structure mutually firm after, the a part of structure of itself is through in correcting structure, shift out in the process of drilling well with dragging for pipe being dragged for thing, being dragged for thing can keep synchronous with dragging for pipe, namely dragged for keep between thing, slips structure, shaft assembly continuing firm, displacement difference or differential seat angle can not be produced between three, improve the success rate of salvaging.
Accompanying drawing explanation
What Fig. 1 provided for the utility model embodiment drags for tubular structure schematic diagram;
The matching structure schematic diagram of the slips structure that Fig. 2 provides for the utility model embodiment and shaft assembly;
What Fig. 3 provided for the utility model embodiment drags for pipe shell and is connected the structural representation connecing platform and mate;
The axial schematic diagram of the matching structure of the slips structure that Fig. 4 provides for the utility model embodiment and shaft assembly;
The structural representation of a kind of embodiment wherein of the fixation kit structure that Fig. 5 provides for the utility model embodiment.
Reference numeral: 1-connects platform, and 2-drags for tube shell, 3-shaft assembly, 31-cylinder sleeve, 32-fluid cylinder, 33-shaft, 34-relief hole, 35-sealing ring, 4-slips structure, 41-limited block, 42-piston, 43-can, 44-slips, 45-hydraulic pressure hole, 5-correcting structure, 51-guiding pipe, 52-tube pulling mouth, 6-fixation kit structure.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
With reference to shown in Fig. 1, the one that the utility model provides drags for pipe, comprise connection and connect platform 1, with described be connected connect that platform 1 connects drag for tube shell 2, also comprise: shaft assembly 3, drag for the inside of tube shell 2 described in being positioned at, its upper end connects with the described bottom connecing platform 1 that is connected, lower end is connected with slips structure 4, is dragged for thing for coordinating to clamp with described slips structure 4; Slips structure 4, drags for the inside of tube shell 2 described in being positioned at, being sheathed on the outer wall of described shaft assembly 3, being dragged for object for blocking; Correcting structure 5, is positioned at described in below described slips structure 4 and drags on tube shell 2, dragged for object for correcting, so that described slips structure 4 is blocked and describedly dragged for object; Correcting structure 5 is utilized to be inserted in and to drag in tube shell 2 by dragging for thing and correct its coordinating with shaft assembly 3, utilize hydraulic coupling to embed slips structure 4 by the fit clearance of dragging between thing and shaft assembly 3, make to be dragged for thing and shaft assembly 3 keeps mutually firm in salvaging process.
Particularly, in use, the upper end of dragging for pipe connects platform 1 by connection and is connected with drilling tool, to drag for pipe by the drive of drilling tool gos deep in drilling well, to drag for pipe gos deep in drilling well, termination by dragging for thing is contacted with the correcting structure 5 dragged on tube shell 2, correcting structure 5 forces to be entered by the termination of dragging for thing and drags in tube shell 2, and utilize the inner surface structure adjustment of dragging for tube shell 2 to be dragged for the relative position of the inner circumferential of thing and shaft assembly 3, hydraulic coupling is applied again to dragging in tube shell 2, slip mechanism embeds by the fit clearance of dragging between thing and shaft assembly 3 under action of hydraulic force, its periphery contacts with by the inner circumferential of dragging for thing, inner circumferential contacts with the periphery of shaft assembly 3, tightly fix and dragged for thing and shaft assembly 3, dragged for thing and shifted out drilling well with dragging for pipe.In prior art, owing to being dragged for thing and slips is interconnected with uncertain angle, docking good degree is therebetween poor, causes success rate lower.Compare with prior art, the Guan Shangyu that drags for provided due to this programme is provided with correcting structure 5 by the one end of dragging for thing contact, dragged for the inwall of thing and slips structure 4 mutually firm after, the a part of structure of itself is through in correcting structure 5, shift out in the process of drilling well with dragging for pipe being dragged for thing, being dragged for thing can keep synchronous with dragging for pipe, namely dragged for keep between thing, slips structure 4, shaft assembly 3 continuing firm, displacement difference or differential seat angle can not be produced between three, improve the success rate of salvaging; In addition, because correcting structure 5 is to being dragged for the correcting effect of thing, can guarantee by drag for thing and shaft assembly 3, slips structure 4 dock good, so without the need to arranging solution card structure, save manufacturing cost.
With reference to shown in Fig. 1, in order to thing and shaft assembly 3 are dragged in correcting, the relative position of slips structure 4, the contact by dragging for thing and slips structure 4 is made to be in optimum state, correcting structure 5 arranges guiding pipe 51, guiding pipe 51 is positioned on the inwall dragging for tube shell 2 below slips structure 4, entered drag for after in tube shell 2 when dragging for thing, the periphery of shaft assembly 3 is advanced to along guiding pipe 51, overlapping with shaft assembly 3 generating portion, slips structure 4 embeds by the fit clearance of dragging between thing and shaft assembly 3 under the effect of hydraulic coupling, its periphery contacts with by the inner circumferential of dragging for thing, inner circumferential contacts with the periphery of shaft assembly 3, tightly fix and dragged for thing and shaft assembly 3, wherein, guiding pipe 51 has the projection towards the direction, axis of dragging for pipe on the inwall dragging for tube shell 2, form internal diameter and be less than the tubular structure dragging for bore, to ensure the tubular structure of guiding pipe 51 and to be dragged for the mating shapes of object, make guiding pipe 51 to being reached best by the correcting effect of dragging for thing.
With reference to shown in Fig. 1, enter smoothly drag in tube shell 2 for enabling to be dragged for thing, correcting structure 5 is also provided with tube pulling mouth 52, tube pulling mouth 52 is opened in the below of guiding pipe 51 and is positioned at the bottom of dragging for tube shell 2, the termination of thing is dragged for for contacting, tube pulling mouth 52 is the hatch frame be communicated with guiding pipe 51 and the inner space of dragging for pipe, makes the termination by dragging for thing enter guiding pipe 51 along tube pulling mouth 52.
Preferably, tube pulling mouth 52 is entered more smoothly for making the termination by dragging for thing, the hatch frame of tube pulling mouth 52 is the bottom sides of dragging for tube shell 2 along being starting point, circumferentially spiral one encloses the top to starting point, tube pulling mouth 52 is made to form the gap of certain area, in use, drag for pipe slowly to rotate under the drive of drilling tool, tube drawing mouth also synchronous axial system, and then make the termination by dragging for thing easier enter in tube pulling mouth 52 by this gap, enter in guiding pipe 51 by tube pulling mouth 52 again, after guiding pipe 51, dragged for thing by correcting to the position with shaft assembly 3 relative match.
With reference to Fig. 1, shown in Fig. 2 and Fig. 4, described slips structure 4 comprises limited block 41 from top to bottom successively, piston 42 and slips 44, the outer peripheral face of described limited block 41 and described piston 42 is coated with can 43 and forms an open column shape structure, described limited block 41 is positioned at the top of described open column shape structure, described piston 42 is positioned at the bottom of described open column shape structure, described slips 44 is fixedly connected with the drain pan of described open column shape structure, the inner circumferential of described open column shape structure is connected with the periphery of described shaft assembly 3, described slips 44 is for being sheathed on the column structure of the outer peripheral face of described shaft assembly 3.During use, drag for pipe to enter through correcting structure 5 and drag for after in tube shell 2, align with the lower end of shaft 33 and leave gap, now, slips structure 4 is moved to shaft 33 with being dragged in the fit clearance of thing under the effect of hydraulic coupling, limited block 41 also moves with synchronous slips 44, until be forced to when limited block 41 moves to the upper end of fluid cylinder 32 stop, slips 44 stretches into shaft 33 and is fixed by the degree of depth of dragging for the fit clearance of thing, when specific design manufactures, need according to actual needs, the length of design slips 44, thickness and shaft 33 with dragged for the width of the fit clearance that thing is formed, also have the lower end of limited block 41 and the distance of fluid cylinder 32 upper end, under factors, slips 44 is made to stretch into this fit clearance with optimum length and thickness, realize being dragged for thing, shaft 33, the requirement of the degree that interfixes of salvaging is best suited between slips 44, and salvage to be convenient to be separated successfully and drag for pipe and dragged for the requirement of thing.
With reference to shown in Fig. 2, described cylinder sleeve 31 offers hydraulic pressure hole 45, described hydraulic pressure hole 45 is between described fluid cylinder 32 and described piston 42, liquid enters in the space of can 43, fluid cylinder 32, piston 42 and cylinder sleeve 31 formation through hydraulic pressure hole 45, constantly be full of this space, piston 42 starts mobile under the effect of hydraulic coupling, slips 44, limited block 41 are synchronized with the movement with piston 42, until limited block 41 is forced to the upper end stopping at fluid cylinder 32, slips structure 4 stop motion, now, slips 44 embeds shaft 33 and to be dragged in the fit clearance of thing and the two to be fixed.
Shown in seeing figures.1.and.2, described shaft assembly 3 comprises: cylinder sleeve 31, for open column shape structure, the upper end of described cylinder sleeve 31 connects platform 1 connect with described connection, lower end is connected with described shaft, described limited block 41 is positioned at the middle part of described cylinder sleeve 31 or inclined medium position, and described piston 42 is positioned at the lower end of described cylinder sleeve 31; Fluid cylinder 32, is fixedly connected with the outer peripheral face of described cylinder sleeve 31, and between described limited block 41 and piston 42, the outer peripheral face of described fluid cylinder 32 is connected with described can 43; Shaft 33, its upper end is connected with the lower end of described cylinder sleeve 31, and the outer peripheral face of lower end and the inner peripheral surface of described slips 44 are socketed.The entirety of slips structure 4 is sheathed on the periphery of shaft assembly 3, and can along an end motion at outer circumferential shaft 33 place of shaft assembly 3 under the effect of hydraulic coupling, make to be dragged for thing with drag for pipe mutually docking, fixing process is more compact, realize being dragged for thing and the locking of dragging for pipe with simple sheathed design feature, reduce the manufacturing cost of dragging for pipe.
With reference to shown in Fig. 2, the center of described shaft 33 offers and is communicated with relief hole 34 from top to bottom, the upper end of described relief hole 34 is communicated with described cylinder sleeve 31, lower end is communicated with the space in described correcting structure 5, and for ensureing that hydraulic fluid can preferentially enter in fluid cylinder, the aperture arranging hydraulic pressure hole 45 is greater than the aperture of relief hole 34, when circulating mud (circulation fluid) pressurizes, entered by hydraulic pressure hole 45 in the space of can 43, fluid cylinder 32, piston 42 and cylinder sleeve 31 formation, promote slips and move.When pressure reaches stable, namely slips has acted on and have been dragged on the inwall of thing and firm contact with it, now limited block 41 is restricted to the upper end of fluid cylinder 32, circulation fluid stops pressurization also being discharged by relief hole, the space preventing from liquid to be full of being formed in slips structure 4 and cylinder sleeve 31 and destroy the internal construction of dragging for pipe.
With reference to shown in Fig. 2 and Fig. 4, between described limited block 41 and described cylinder sleeve 31, between described piston 42 and described cylinder sleeve 31 and between described fluid cylinder 32 and described can 43, sealing ring 35 is all installed, makes the internal construction of dragging for pipe keep mutually firm.
With reference to shown in Fig. 1 and Fig. 3, for preventing slips structure 4 from producing shake or rupture in salvaging process, connecing one end that platform 1 is fixedly connected with at cylinder sleeve 31 and be provided with fixation kit structure 6 with being connected, shaft assembly 3 by fixation kit structure 6 with drag for tube shell 2 and be connected.
Preferably, with reference to shown in Fig. 5, this fixation kit structure 6 can be rib formula structure or entity structure, the difference of rib formula structure and entity structure is its weight, in actual needs, when being dragged for thing if salvage, the weight of dragging for pipe meets transfers weight, without the need to counterweight, then prioritizing selection rib formula structure, strengthens the firm performance of fixation kit structure 6 pairs of slips structures 4; If in salvaging process, the discontented foot of weight of dragging for pipe is put weight, is needed breeding, then prioritizing selection entity structure, increase drag for pipe transfer weight, conveniently to salvage.
What the utility model provided drags for pipe, correcting structure 5 is utilized to be inserted in and to drag in tube shell 2 by dragging for thing and correct its coordinating with shaft assembly 3, utilize hydraulic coupling to embed slips structure 4 by the fit clearance of dragging between thing and shaft assembly 3, make to be dragged for thing and shaft assembly 3 keeps mutually firm in salvaging process.Particularly, to drag for pipe gos deep in drilling well, termination by dragging for thing is contacted with the correcting structure 5 dragged on tube shell 2, correcting structure 5 forces to be entered by the termination of dragging for thing and drags in tube shell 2, and utilize the inner surface structure adjustment of dragging for tube shell 2 to be dragged for the relative position of the inner circumferential of thing and shaft assembly 3, hydraulic coupling is applied again to dragging in tube shell 2, slip mechanism 4 embeds by the fit clearance of dragging between thing and shaft assembly 3 under action of hydraulic force, its periphery contacts with by the inner circumferential of dragging for thing, inner circumferential contacts with the periphery of shaft assembly 3, tightly fix and dragged for thing and shaft assembly 3, dragged for thing and shifted out drilling well with dragging for pipe.In prior art, owing to being dragged for thing and slips is interconnected with uncertain angle, therebetween docking good degree is poor, cause success rate lower, and dragged for when thing shifts out drilling well with hydraulic retractable fishing spear and play pendulum, its inwall and slips is caused to produce relative sliding or differential seat angle at fixing contact position place, cause and dragged for thing and again fall into drilling well, cause new blocking, or utilize and separate card structure, when dragging for come up under being dragged for thing to be stuck in the restriction of down-hole or other conditions, separating card structure and untie slips and dragged for contacting with each other of thing.Compare with prior art, the Guan Shangyu that drags for provided due to this programme is provided with correcting structure 5 by the one end of dragging for thing contact, dragged for the inwall of thing and slips structure 4 mutually firm after, the a part of structure of itself is through in correcting structure 5, shift out in the process of drilling well with dragging for pipe being dragged for thing, dragged for thing and can be kept synchronous with dragging for pipe, namely thing is dragged for, slips structure 4, keep between shaft assembly 3 continuing firmly, displacement difference or differential seat angle can not be produced between three, dragged for thing to depart from dragging for pipe and again fall in drilling well so that cause new blocking, improve the success rate of salvaging, because correcting structure 5 is to being dragged for the correcting effect of thing, can guarantee by drag for thing and shaft assembly 3, slips structure 4 dock good, so without the need to arranging solution card structure, save manufacturing cost.
The above; be only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should described be as the criterion with the protection domain of claim.
Claims (10)
1. drag for a pipe, comprise connection and connect platform, with described be connected connect that platform connects drag for tube shell, it is characterized in that, also comprise:
Shaft assembly, drags for the inside of tube shell described in being positioned at, its upper end connects with the described bottom connecing platform that is connected, and lower end and slips anatomical connectivity are dragged for thing for clamping with described slips respective outer side edges;
Slips structure, drags for the inside of tube shell described in being positioned at, being sheathed on the outer wall of described shaft assembly, being dragged for object for blocking;
Correcting structure, is positioned at and drags on tube shell described in below described slips structure, dragged for object for correcting, so that described slips structure is blocked and describedly dragged for object.
2. according to claim 1ly drag for pipe, it is characterized in that, described correcting structure comprises guiding pipe,
Described guiding pipe is positioned at and drags on the inwall of tube shell described in below described slips structure, described inwall has towards described projection of dragging for the direction, axis of pipe, drags for the tubular structure of bore described in formation internal diameter is less than.
3. according to claim 2ly drag for pipe, it is characterized in that, the tubular structure of described guiding pipe and describedly dragged for the mating shapes of object.
4. according to claim 2ly drag for pipe, it is characterized in that, described correcting structure also comprises tube pulling mouth, described tube pulling mouth is opened in the below of described guiding pipe and drags for the bottom of tube shell described in being positioned at, described tube pulling mouth for described guiding pipe and described in drag for pipe the hatch frame that is communicated with of inner space, described hatch frame is that circumferentially spiral one encloses the top to described starting point with described bottom sides of dragging for tube shell along for starting point.
5. according to claim 1ly drag for pipe, it is characterized in that, described slips structure comprises limited block from top to bottom successively, piston and slips, the outer peripheral face of described limited block and described piston is coated with can and forms an open column shape structure, described limited block is positioned at the top of described open column shape structure, described piston is positioned at the bottom of described open column shape structure, described slips is fixedly connected with the drain pan of described open column shape structure, the inner circumferential of described open column shape structure is connected with the periphery of described shaft assembly, described slips is the column structure of the outer peripheral face being sheathed on described shaft assembly.
6. according to claim 5ly drag for pipe, it is characterized in that, described shaft assembly comprises:
Cylinder sleeve is open column shape structure, and the upper end of described cylinder sleeve connects platform connect with described connection, and lower end is connected with described shaft, and described limited block is positioned at middle part or the medium position partially of described cylinder sleeve, and described piston is positioned at the lower end of described cylinder sleeve;
Fluid cylinder, is fixedly connected with the outer peripheral face of described cylinder sleeve, and between described limited block and piston, the outer peripheral face of described fluid cylinder is connected with described can;
Shaft, its upper end is connected with the lower end of described cylinder sleeve, and the outer peripheral face of lower end and the inner peripheral surface of described slips are socketed.
7. according to claim 6ly drag for pipe, it is characterized in that, described cylinder sleeve offers hydraulic pressure hole, described hydraulic pressure hole is between described fluid cylinder and described piston.
8. according to claim 6ly drag for pipe, it is characterized in that, the center of described shaft offers and is communicated with relief hole from top to bottom, and the upper end of described relief hole is communicated with described cylinder sleeve, and lower end is communicated with the space in described correcting structure.
9. according to claim 6ly drag for pipe, it is characterized in that, between described limited block and described cylinder sleeve, between described piston and described cylinder sleeve and between described fluid cylinder and described can, all sealing ring is installed.
10. according to any one of claim 1-9, drag for pipe, it is characterized in that, described shaft assembly is connected with the described tube shell that drags for by fixation kit structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420460828.0U CN204098837U (en) | 2014-08-13 | 2014-08-13 | Drag for pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420460828.0U CN204098837U (en) | 2014-08-13 | 2014-08-13 | Drag for pipe |
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| Publication Number | Publication Date |
|---|---|
| CN204098837U true CN204098837U (en) | 2015-01-14 |
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| CN201420460828.0U Active CN204098837U (en) | 2014-08-13 | 2014-08-13 | Drag for pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612617A (en) * | 2015-01-22 | 2015-05-13 | 中交二航局第三工程有限公司 | Broken drill pipe salvage device inside pile foundation hole |
| CN107191152A (en) * | 2017-06-29 | 2017-09-22 | 新疆国利衡清洁能源科技有限公司 | A kind of expansion type drags for pipe |
| CN107780863A (en) * | 2017-11-24 | 2018-03-09 | 新疆国利衡清洁能源科技有限公司 | Drag for pipe |
-
2014
- 2014-08-13 CN CN201420460828.0U patent/CN204098837U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612617A (en) * | 2015-01-22 | 2015-05-13 | 中交二航局第三工程有限公司 | Broken drill pipe salvage device inside pile foundation hole |
| CN107191152A (en) * | 2017-06-29 | 2017-09-22 | 新疆国利衡清洁能源科技有限公司 | A kind of expansion type drags for pipe |
| CN107780863A (en) * | 2017-11-24 | 2018-03-09 | 新疆国利衡清洁能源科技有限公司 | Drag for pipe |
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Effective date of registration: 20170222 Address after: 065001 Hebei economic and Technological Development Zone, Langfang science and Technology Park in the Southern District of B building, room 522 Patentee after: ENN SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: The 065001 Hebei economic and Technological Development Zone of Langfang Huaxiang new Austrian Science and Technology Park in the Southern District B building room 522 Patentee before: ENN Coal Gasification Co., Ltd. |