CN204126593U - Self-expanding blocking device - Google Patents
Self-expanding blocking device Download PDFInfo
- Publication number
- CN204126593U CN204126593U CN201420583380.1U CN201420583380U CN204126593U CN 204126593 U CN204126593 U CN 204126593U CN 201420583380 U CN201420583380 U CN 201420583380U CN 204126593 U CN204126593 U CN 204126593U
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- mandrel
- mounting groove
- slips
- screw thread
- pole
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- 230000000903 blocking effect Effects 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 238000012856 packing Methods 0.000 claims abstract description 52
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 12
- 238000009434 installation Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
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Abstract
The utility model relates to blocking device technical field, is a kind of self-expanding blocking device; It comprises center-pole, beam barrel, slips fixing body, upper mandrel, lower mandrel, guide shoe and slips; The lower end of center-pole and the upper end of slips fixing body are fixedly installed togather, the upper outside of slips fixing body is provided with annular groove, the inclined-plane wide at the top and narrow at the bottom of at least two is had at the lower outside of slips fixing body, inclined-plane is provided with the slips mounting groove of above-below direction, the inner of slips is arranged in slips mounting groove and also can slides up and down along slips mounting groove, is integrally fixed with cylindrical shell in the lower end outer rim of beam barrel.The utility model reasonable and compact in structure, easy to use, by center-pole, beam barrel, slips fixing body, upper mandrel, lower mandrel, guide shoe, slips and chance oil meet water self-expansion type packing element with the use of, realize the object of shutoff oil pipe, there is safe and reliable and that plugging effect is good feature, facilitate operation, reduce cost of production, improve production efficiency.
Description
Technical field
the utility model relates to blocking device technical field, is a kind of self-expanding blocking device.
Background technology
in current oil water well working with pressure oil pipe, choked technique mainly adopts pressing type blanking plug and slide block type blanking plug to carry out shutoff.Need the equipment such as cementing truck, tank car, crane, cable car or winch wire to coordinate during operation could realize, have that cost of production is high, operation is more complicated.
Summary of the invention
the utility model provides a kind of self-expanding blocking device, overcome the deficiency of above-mentioned prior art, when it effectively can solve and carry out the operation of oil water well working with pressure oil pipe inner blocking with existing pressing type blanking plug and slide block type blanking plug, there is the problem that cost of production is high and operation is more complicated.
the technical solution of the utility model is realized by following measures: a kind of self-expanding blocking device, comprises center-pole, beam barrel, slips fixing body, upper mandrel, lower mandrel, guide shoe and slips, the lower end of center-pole and the upper end of slips fixing body are fixedly installed togather, the upper outside of slips fixing body is provided with annular groove, the inclined-plane wide at the top and narrow at the bottom of at least two is had at the lower outside of slips fixing body, inclined-plane is provided with the slips mounting groove of above-below direction, the inner of slips is arranged in slips mounting groove and also can slides up and down along slips mounting groove, integrally cylindrical shell is fixed with in the lower end outer rim of beam barrel, the top of beam barrel is sleeved on center-pole, cylindrical shell seat is on the lower surface of annular groove, the upper end of slips is fixedly mounted on cylindrical shell, beam barrel, cylindrical shell, hydraulic cavities is formed between slips fixing body and center-pole, cylindrical shell has the inlet opening that at least one communicates with hydraulic cavities, the lower end of slips fixing body and the upper end of upper mandrel are fixedly installed togather, the lower end of upper mandrel and the upper end of lower mandrel are fixedly installed togather by the first crossover sub, rubber stopper is set with on the top of upper mandrel, the outside of the upper mandrel between upper rubber stopper and the first crossover sub is installed with the chance oil chance water self-expansion type packing element of at least three, the lower lower end of mandrel and the top of guide shoe are fixedly installed togather by the second crossover sub, are provided with lower rubber stopper in the outside of lower mandrel.
here is the further optimization and/or improvements to above-mentioned utility model technical scheme:
above-mentioned upper mandrel comprises second mandrel of the first mandrel and at least three; The lower end of slips fixing body and the upper end of the first mandrel are fixedly installed togather, between the first mandrel and the first crossover sub, be installed with second mandrel of at least three, be installed with respectively at the lower outside of the first mandrel and the outside of each second mandrel and meet oil chance water self-expansion type packing element.
the above-mentioned lower outside at slips fixing body has three inclined-planes wide at the top and narrow at the bottom, each inclined-plane is provided with the slips mounting groove of above-below direction, the inner of slips is arranged in slips mounting groove and also can slides up and down along slips mounting groove, have the installing hole corresponding with slips mounting groove respectively in the bottom of cylindrical shell, the upper end of slips is fixedly installed in installing hole.
draw-in groove is respectively arranged with outside the middle part of the above-mentioned lower outside at the first mandrel and each second mandrel, chuck is fixed with in each upper inner of meeting oil chance water self-expansion type packing element, meet oil and meet water self-expansion type packing element is fixedly mounted on the first mandrel lower outside by the draw-in groove on the first mandrel and the chance oil chuck of meeting on water self-expansion type packing element, meet oily chance water self-expansion type packing element is fixedly mounted on the second mandrel outside by the draw-in groove on the second mandrel and the chuck of meeting on oil chance water self-expansion type packing element; Or/and, the lower end outside of slips fixing body is provided with annulus mounting groove, at annulus mounting groove internal fixtion, annulus is installed.
the above-mentioned upper end at center-pole is provided with external screw thread; Or/and, the upper end of center-pole is provided with hole for hoist.
the upper outside that water self-expansion type packing element met by above-mentioned chance oil is up-narrow and down-wide inclined-plane, on the inclined-plane that the lower inside of upper rubber stopper has the top of meeting water self-expansion type packing element with chance oil to match, the lower bevel seat of upper rubber stopper is in the upper inclined surface of meeting oil chance water self-expansion type packing element, or/and, the upper surface of slips fixing body is provided with center-pole mounting groove, the lower end of center-pole is fixedly mounted in center-pole mounting groove by screw thread, the lower surface of slips fixing body is provided with the first mandrel mounting groove, the upper end of the first mandrel is fixedly mounted in the first mandrel mounting groove by screw thread, the lower surface of the first mandrel is provided with the second mandrel mounting groove, the upper end of the second mandrel is fixedly mounted in the second mandrel mounting groove by screw thread, the lower surface of each second mandrel is provided with mounting groove, screw thread is had in mounting groove, adjacent two second mandrels are fixedly installed togather by mounting groove and screw thread, the top of the first crossover sub is fixedly mounted on by screw thread in the mounting groove of adjacent second mandrel, the upper surface of lower mandrel is provided with the first crossover sub mounting groove, the bottom of the first crossover sub is fixedly mounted in the first crossover sub mounting groove by screw thread, the upper surface of the second crossover sub is provided with lower mandrel mounting groove, the lower end of lower mandrel is fixedly mounted in lower mandrel mounting groove by screw thread, the upper surface of guide shoe is provided with the second crossover sub mounting groove, the bottom of the second crossover sub is fixedly mounted in the second crossover sub mounting groove by screw thread.
the utility model reasonable and compact in structure, easy to use, by center-pole, beam barrel, slips fixing body, upper mandrel, lower mandrel, guide shoe, slips and chance oil meet water self-expansion type packing element with the use of, realize the object of shutoff oil pipe, there is safe and reliable and that plugging effect is good feature, facilitate operation, reduce cost of production, improve production efficiency.
Accompanying drawing explanation
accompanying drawing 1 is that the master of the utility model most preferred embodiment looks half section structural representation.
accompanying drawing 2 is that the master of slips fixing body in the utility model looks half section structure for amplifying schematic diagram.
accompanying drawing 3 is that the master of center-pole in the utility model looks structure for amplifying schematic diagram.
accompanying drawing 4 is that the master of beam barrel in the utility model looks half section structure for amplifying schematic diagram.
accompanying drawing 5 is that the master of upper rubber stopper in the utility model is depending on analysing and observe structure for amplifying schematic diagram.
accompanying drawing 6 is that the master of the first mandrel in the utility model is depending on analysing and observe structure for amplifying schematic diagram.
accompanying drawing 7 is meet oil in the utility model to meet the master of water self-expansion type packing element depending on analysing and observe structure for amplifying schematic diagram.
accompanying drawing 8 is that the master of the second mandrel in the utility model is depending on analysing and observe structure for amplifying schematic diagram.
accompanying drawing 9 is that the master of slips in the utility model looks structure for amplifying schematic diagram.
accompanying drawing 10 is that the master of lower mandrel in the utility model is depending on analysing and observe structure for amplifying schematic diagram.
accompanying drawing 11 is that the master of lower rubber stopper in the utility model looks half section structure for amplifying schematic diagram.
accompanying drawing 12 is that the master of the second crossover sub in the utility model is depending on analysing and observe structure for amplifying schematic diagram.
accompanying drawing 13 is that the master of guide shoe in the utility model is depending on analysing and observe structure for amplifying schematic diagram.
coding in accompanying drawing is respectively: bar centered by 1, and 2 is beam barrel, and 3 is slips fixing body, and 4 is lower mandrel, 5 is guide shoe, and 6 is slips, and 7 is cylindrical shell, and 8 is hydraulic cavities, 9 is inlet opening, and 10 is the first crossover sub, and 11 is upper rubber stopper, and 12 meet water self-expansion type packing element for meeting oil, 13 is the second crossover sub, and 14 is lower rubber stopper, and 15 is the first mandrel, 16 is the second mandrel, and 17 is installing hole, and 18 is draw-in groove, 19 is chuck, and 20 is annulus, and 21 is hole for hoist.
Detailed description of the invention
the utility model by the restriction of following embodiment, can not determine concrete embodiment according to the technical solution of the utility model and actual conditions.
in the utility model, for convenience of description, the description of the relative position relation of each parts is all be described according to the Butut mode of Figure of description 1, as: the position relationship of forward and backward, upper and lower, left and right etc. determines according to the Butut direction of Figure of description 1.
below in conjunction with embodiment and accompanying drawing, the utility model is further described:
as shown in accompanying drawing 1,2,3,4,5,6,7,8,9,10,11,12,13, this self-expanding blocking device comprises center-pole 1, beam barrel 2, slips fixing body 3, upper mandrel, lower mandrel 4, guide shoe 5 and slips 6, the lower end of center-pole 1 and the upper end of slips fixing body 3 are fixedly installed togather, the upper outside of slips fixing body 3 is provided with annular groove, the inclined-plane wide at the top and narrow at the bottom of at least two is had at the lower outside of slips fixing body 3, inclined-plane is provided with the slips mounting groove of above-below direction, the inner of slips 6 is arranged in slips mounting groove and also can slides up and down along slips mounting groove, cylindrical shell 7 is integrally fixed with in the lower end outer rim of beam barrel 2, the top of beam barrel 2 is sleeved on center-pole 1, cylindrical shell 7 is on the lower surface of annular groove, the upper end of slips 6 is fixedly mounted on cylindrical shell 7, beam barrel 2, cylindrical shell 7, hydraulic cavities 8 is formed between slips fixing body 3 and center-pole 1, cylindrical shell 7 has the inlet opening 9 that at least one communicates with hydraulic cavities 8, the lower end of slips fixing body 3 and the upper end of upper mandrel are fixedly installed togather, the lower end of upper mandrel and the upper end of lower mandrel 4 are fixedly installed togather by the first crossover sub 10, rubber stopper 11 is set with on the top of upper mandrel, the outside of the upper mandrel between upper rubber stopper 11 and the first crossover sub 10 is installed with the chance oil chance water self-expansion type packing element 12 of at least three, the lower end of lower mandrel 4 and the top of guide shoe 5 are fixedly installed togather by the second crossover sub 13, are provided with lower rubber stopper 14 in the outside of lower mandrel 4.Upper rubber stopper 11 plays and compresses and spacing object of meeting oil chance water self-expansion type packing element 12; Like this, water self-expansion type packing element 12 is met by inlet opening 9, slips 6 and chance oil, liquid enters in hydraulic cavities 8 by inlet opening 9, liquid-driving beam barrel 2 and cylindrical shell 7 move up, cylindrical shell 7 drives slips 6 that slips 6 is outwards strutted along slips mounting groove, namely slips 6 can be fixed on tube inner wall, thus realize the object of shutoff oil pipe, its external diameter of slow expansion through certain hour after chance oil chance water self-expansion type packing element 12 meets water progressively expands, and water self-expansion type packing element 12 realization blocking oil pipe inner passage met by the chance oil after expansion; There is safe and reliable and that plugging effect is good feature, do not need the equipment such as cementing truck, tank car, crane, cable car or winch wire to coordinate during operation, facilitate operation, reduce cost of production, improve production efficiency.
according to actual needs, above-mentioned self-expanding blocking device can be made further optimization and/or improvements:
as shown in accompanying drawing 1,6,8, upper mandrel comprises second mandrel 16 of the first mandrel 15 and at least three; The lower end of slips fixing body 3 and the upper end of the first mandrel 15 are fixedly installed togather, between the first mandrel 15 and the first crossover sub 10, be installed with second mandrel 16 of at least three, be installed with respectively at the lower outside of the first mandrel 15 and the outside of each second mandrel 16 and meet oil chance water self-expansion type packing element 12.Like this, be convenient to meet oil and meet after water self-expansion type packing element 12 meets water and progressively expand through its external diameter of slow expansion of certain hour, the chance oil after expansion is met water self-expansion type packing element 12 and is realized better blocking oil pipe inner passage.
as shown in accompanying drawing 1,2,9, three inclined-planes wide at the top and narrow at the bottom are had at the lower outside of slips fixing body 3, each inclined-plane is provided with the slips mounting groove of above-below direction, the inner of slips is arranged in slips mounting groove and also can slides up and down along slips mounting groove, have the installing hole 17 corresponding with slips mounting groove respectively in the bottom of cylindrical shell 7, the upper end of slips 6 is fixedly installed in installing hole 17.Like this, the upper end that installing hole 17 is convenient to slips 6 is fixedly installed in installing hole 17.
as accompanying drawing 1, 6, shown in 8, draw-in groove 18 is respectively arranged with outside the lower outside of the first mandrel 15 and the middle part of each second mandrel 16, chuck 19 is fixed with in each upper inner of meeting oil chance water self-expansion type packing element 12, meet oil and meet water self-expansion type packing element 12 is fixedly mounted on the first mandrel 15 lower outside by the draw-in groove 18 on the first mandrel 15 and the chance oil chuck 19 of meeting on water self-expansion type packing element 12, meet oil and meet water self-expansion type packing element 12 is fixedly mounted on the second mandrel 16 outside by the draw-in groove 18 on the second mandrel 16 and the chance oil chuck 19 of meeting on water self-expansion type packing element 12, or/and, the lower end outside of slips fixing body 3 is provided with annulus mounting groove, at annulus mounting groove internal fixtion, annulus 20 is installed.Like this, be convenient to the first mandrel 15 and meet the installation and removal between oil chance water self-expansion type packing element 12; Be convenient to the second mandrel 16 and meet the installation and removal between oil chance water self-expansion type packing element 12; Annulus 20 is convenient to protection slips fixing body 3, prevents damage.
as shown in accompanying drawing 1,3, the upper end of center-pole 1 is provided with external screw thread; Or/and, the upper end of center-pole 1 is provided with hole for hoist 21.Like this, the external screw thread on center-pole 1 is convenient to installation and removal; Hole for hoist 21 is convenient to lifting.
as shown in accompanying drawing 1,5,6,7,8,10,11,12,13, the upper outside of meeting oil chance water self-expansion type packing element 12 is up-narrow and down-wide inclined-plane, on the inclined-plane that the lower inside of upper rubber stopper 11 has the top of meeting water self-expansion type packing element 12 with chance oil to match, the lower bevel seat of upper rubber stopper 11 is in the upper inclined surface of meeting oil chance water self-expansion type packing element 12, or/and, the upper surface of slips fixing body 3 is provided with center-pole mounting groove, the lower end of center-pole 1 is fixedly mounted in center-pole mounting groove by screw thread, the lower surface of slips fixing body 3 is provided with the first mandrel mounting groove, the upper end of the first mandrel 15 is fixedly mounted in the first mandrel mounting groove by screw thread, the lower surface of the first mandrel 15 is provided with the second mandrel mounting groove, the upper end of the second mandrel 16 is fixedly mounted in the second mandrel mounting groove by screw thread, the lower surface of each second mandrel 16 is provided with mounting groove, screw thread is had in mounting groove, adjacent two second mandrels 16 are fixedly installed togather by mounting groove and screw thread, the top of the first crossover sub 10 is fixedly mounted on by screw thread in the mounting groove of adjacent second mandrel, the upper surface of lower mandrel 4 is provided with the first crossover sub mounting groove, the bottom of the first crossover sub 10 is fixedly mounted in the first crossover sub mounting groove by screw thread, the upper surface of the second crossover sub 13 is provided with lower mandrel mounting groove, the lower end of lower mandrel 4 is fixedly mounted in lower mandrel mounting groove by screw thread, the upper surface of guide shoe 5 is provided with the second crossover sub mounting groove, the bottom of the second crossover sub 13 is fixedly mounted in the second crossover sub mounting groove by screw thread.Like this, be fixedly installed togather by screw thread, be convenient to installation and removal.
above technical characteristic constitutes most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
the use procedure of the utility model most preferred embodiment: during use, after entering well under the utility model, borehole pressure upwards acts on the utility model, now the utility model entirety moves upward, its external diameter of slow expansion through certain hour after chance oil chance water self-expansion type packing element 12 meets water progressively expands, and water self-expansion type packing element 12 realization blocking oil pipe inner passage met by the chance oil after expansion; Meanwhile, liquid enters in hydraulic cavities 8 by inlet opening 9, and liquid-driving beam barrel 2 and cylindrical shell 7 move up, and cylindrical shell 7 drives slips 6 that slips 6 is outwards strutted along slips mounting groove, and namely slips 6 can be fixed on tube inner wall, thus realizes the object of shutoff oil pipe.
Claims (10)
1. a self-expanding blocking device, is characterized in that comprising center-pole, beam barrel, slips fixing body, upper mandrel, lower mandrel, guide shoe and slips, the lower end of center-pole and the upper end of slips fixing body are fixedly installed togather, the upper outside of slips fixing body is provided with annular groove, the inclined-plane wide at the top and narrow at the bottom of at least two is had at the lower outside of slips fixing body, inclined-plane is provided with the slips mounting groove of above-below direction, the inner of slips is arranged in slips mounting groove and also can slides up and down along slips mounting groove, integrally cylindrical shell is fixed with in the lower end outer rim of beam barrel, the top of beam barrel is sleeved on center-pole, cylindrical shell seat is on the lower surface of annular groove, the upper end of slips is fixedly mounted on cylindrical shell, beam barrel, cylindrical shell, hydraulic cavities is formed between slips fixing body and center-pole, cylindrical shell has the inlet opening that at least one communicates with hydraulic cavities, the lower end of slips fixing body and the upper end of upper mandrel are fixedly installed togather, the lower end of upper mandrel and the upper end of lower mandrel are fixedly installed togather by the first crossover sub, rubber stopper is set with on the top of upper mandrel, the outside of the upper mandrel between upper rubber stopper and the first crossover sub is installed with the chance oil chance water self-expansion type packing element of at least three, the lower lower end of mandrel and the top of guide shoe are fixedly installed togather by the second crossover sub, are provided with lower rubber stopper in the outside of lower mandrel.
2. self-expanding blocking device according to claim 1, is characterized in that mandrel comprises second mandrel of the first mandrel and at least three; The lower end of slips fixing body and the upper end of the first mandrel are fixedly installed togather, between the first mandrel and the first crossover sub, be installed with second mandrel of at least three, be installed with respectively at the lower outside of the first mandrel and the outside of each second mandrel and meet oil chance water self-expansion type packing element.
3. self-expanding blocking device according to claim 1 and 2, it is characterized in that the lower outside of slips fixing body has three inclined-planes wide at the top and narrow at the bottom, each inclined-plane is provided with the slips mounting groove of above-below direction, the inner of slips is arranged in slips mounting groove and also can slides up and down along slips mounting groove, have the installing hole corresponding with slips mounting groove respectively in the bottom of cylindrical shell, the upper end of slips is fixedly installed in installing hole.
4. self-expanding blocking device according to claim 1 and 2, it is characterized in that being respectively arranged with draw-in groove outside the lower outside of the first mandrel and the middle part of each second mandrel, chuck is fixed with in each upper inner of meeting oil chance water self-expansion type packing element, meet oil and meet water self-expansion type packing element is fixedly mounted on the first mandrel lower outside by the draw-in groove on the first mandrel and the chance oil chuck of meeting on water self-expansion type packing element, meet oil and meet water self-expansion type packing element is fixedly mounted on the second mandrel outside by the draw-in groove on the second mandrel and the chance oil chuck of meeting on water self-expansion type packing element, or/and, the lower end outside of slips fixing body is provided with annulus mounting groove, at annulus mounting groove internal fixtion, annulus is installed.
5. self-expanding blocking device according to claim 3, it is characterized in that being respectively arranged with draw-in groove outside the lower outside of the first mandrel and the middle part of each second mandrel, chuck is fixed with in each upper inner of meeting oil chance water self-expansion type packing element, meet oil and meet water self-expansion type packing element is fixedly mounted on the first mandrel lower outside by the draw-in groove on the first mandrel and the chance oil chuck of meeting on water self-expansion type packing element, meet oily chance water self-expansion type packing element is fixedly mounted on the second mandrel outside by the draw-in groove on the second mandrel and the chuck of meeting on oil chance water self-expansion type packing element; Or/and, the lower end outside of slips fixing body is provided with annulus mounting groove, at annulus mounting groove internal fixtion, annulus is installed.
6. self-expanding blocking device according to claim 1 and 2, is characterized in that the upper end of center-pole is provided with external screw thread; Or/and, the upper end of center-pole is provided with hole for hoist.
7. self-expanding blocking device according to claim 3, is characterized in that the upper end of center-pole is provided with external screw thread; Or/and, the upper end of center-pole is provided with hole for hoist.
8. self-expanding blocking device according to claim 5, is characterized in that the upper end of center-pole is provided with external screw thread; Or/and, the upper end of center-pole is provided with hole for hoist.
9. self-expanding blocking device according to claim 2, it is characterized in that the upper outside of meeting oil chance water self-expansion type packing element is up-narrow and down-wide inclined-plane, on the inclined-plane that the lower inside of upper rubber stopper has the top of meeting water self-expansion type packing element with chance oil to match, the lower bevel seat of upper rubber stopper is in the upper inclined surface of meeting oil chance water self-expansion type packing element, or/and, the upper surface of slips fixing body is provided with center-pole mounting groove, the lower end of center-pole is fixedly mounted in center-pole mounting groove by screw thread, the lower surface of slips fixing body is provided with the first mandrel mounting groove, the upper end of the first mandrel is fixedly mounted in the first mandrel mounting groove by screw thread, the lower surface of the first mandrel is provided with the second mandrel mounting groove, the upper end of the second mandrel is fixedly mounted in the second mandrel mounting groove by screw thread, the lower surface of each second mandrel is provided with mounting groove, screw thread is had in mounting groove, adjacent two second mandrels are fixedly installed togather by mounting groove and screw thread, the top of the first crossover sub is fixedly mounted on by screw thread in the mounting groove of adjacent second mandrel, the upper surface of lower mandrel is provided with the first crossover sub mounting groove, the bottom of the first crossover sub is fixedly mounted in the first crossover sub mounting groove by screw thread, the upper surface of the second crossover sub is provided with lower mandrel mounting groove, the lower end of lower mandrel is fixedly mounted in lower mandrel mounting groove by screw thread, the upper surface of guide shoe is provided with the second crossover sub mounting groove, the bottom of the second crossover sub is fixedly mounted in the second crossover sub mounting groove by screw thread.
10. self-expanding blocking device according to claim 8, it is characterized in that the upper outside of meeting oil chance water self-expansion type packing element is up-narrow and down-wide inclined-plane, on the inclined-plane that the lower inside of upper rubber stopper has the top of meeting water self-expansion type packing element with chance oil to match, the lower bevel seat of upper rubber stopper is in the upper inclined surface of meeting oil chance water self-expansion type packing element, or/and, the upper surface of slips fixing body is provided with center-pole mounting groove, the lower end of center-pole is fixedly mounted in center-pole mounting groove by screw thread, the lower surface of slips fixing body is provided with the first mandrel mounting groove, the upper end of the first mandrel is fixedly mounted in the first mandrel mounting groove by screw thread, the lower surface of the first mandrel is provided with the second mandrel mounting groove, the upper end of the second mandrel is fixedly mounted in the second mandrel mounting groove by screw thread, the lower surface of each second mandrel is provided with mounting groove, screw thread is had in mounting groove, adjacent two second mandrels are fixedly installed togather by mounting groove and screw thread, the top of the first crossover sub is fixedly mounted on by screw thread in the mounting groove of adjacent second mandrel, the upper surface of lower mandrel is provided with the first crossover sub mounting groove, the bottom of the first crossover sub is fixedly mounted in the first crossover sub mounting groove by screw thread, the upper surface of the second crossover sub is provided with lower mandrel mounting groove, the lower end of lower mandrel is fixedly mounted in lower mandrel mounting groove by screw thread, the upper surface of guide shoe is provided with the second crossover sub mounting groove, the bottom of the second crossover sub is fixedly mounted in the second crossover sub mounting groove by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420583380.1U CN204126593U (en) | 2014-10-10 | 2014-10-10 | Self-expanding blocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420583380.1U CN204126593U (en) | 2014-10-10 | 2014-10-10 | Self-expanding blocking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204126593U true CN204126593U (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420583380.1U Expired - Lifetime CN204126593U (en) | 2014-10-10 | 2014-10-10 | Self-expanding blocking device |
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| CN (1) | CN204126593U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186344A (en) * | 2019-07-16 | 2019-08-30 | 通源石油科技集团股份有限公司 | A kind of plugging device and method for cutting top for coal mine |
-
2014
- 2014-10-10 CN CN201420583380.1U patent/CN204126593U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186344A (en) * | 2019-07-16 | 2019-08-30 | 通源石油科技集团股份有限公司 | A kind of plugging device and method for cutting top for coal mine |
| CN110186344B (en) * | 2019-07-16 | 2023-11-21 | 通源石油科技集团股份有限公司 | Plugging device and method for coal mine roof cutting |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |