CN113756761A - But prefilter formula screen pipe - Google Patents
But prefilter formula screen pipe Download PDFInfo
- Publication number
- CN113756761A CN113756761A CN202111213022.2A CN202111213022A CN113756761A CN 113756761 A CN113756761 A CN 113756761A CN 202111213022 A CN202111213022 A CN 202111213022A CN 113756761 A CN113756761 A CN 113756761A
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- pipe
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- 238000011045 prefiltration Methods 0.000 title abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 55
- 238000012216 screening Methods 0.000 claims abstract description 29
- 238000003780 insertion Methods 0.000 claims abstract description 19
- 230000037431 insertion Effects 0.000 claims abstract description 19
- 238000001914 filtration Methods 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 9
- 238000005728 strengthening Methods 0.000 abstract description 18
- 239000003129 oil well Substances 0.000 abstract description 15
- 238000001125 extrusion Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 12
- 239000012530 fluid Substances 0.000 description 9
- 239000004576 sand Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/08—Methods or apparatus for cleaning boreholes or wells cleaning in situ of down-hole filters, screens, e.g. casing perforations, or gravel packs
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention relates to the technical field of sieve tubes, and discloses a prefiltable sieve tube which comprises a sieve tube, wherein the lower part of the sieve tube is fixedly connected with a reinforcing insertion tube, the outside of the sieve tube is provided with an outer reinforcing rib, the inside of the outside of the sieve tube is provided with a first screening hole, the inside of the sieve tube is movably sleeved with a pipeline base, and the outside of the pipeline base is fixedly connected with a sliding groove rod. This but prefilter formula screen pipe, through the outside fixedly connected with outside strengthening rib with the device screen pipe, can drive the outside strengthening rib and consolidate the screen pipe, install eight bracing pieces between every section outside strengthening rib simultaneously, can drive the position between two outside strengthening ribs and splice the injectly, can increase when the outside of device outside strengthening rib to the screen pipe is consolidated, the steadiness when increasing the device screen pipe use, when avoiding the device screen pipe to install inside the oil well below the kilometer, can avoid the too big problem that causes the extrusion damage to the screen pipe of pressure.
Description
Technical Field
The invention relates to the technical field of sieve tubes, in particular to a prefiltable sieve tube.
Background
The petroleum sieve tube has the main functions of sand prevention, the geological environment of an oil well is different (the lithology is different), so that the steel grade and the type of the adopted sieve tube are different, and in the process of extracting the inside of the oil field below thousands of meters, silt in the oil well needs to be filtered through the sieve tube, so that the prefiltable sieve tube is developed.
In the existing sieve tube, the common oil well sieve tube needs to extend to a distance of less than several kilometers, so that after the sieve tube is installed, oil can extrude the sieve tube, and the problems that the pressure is too high and the sieve tube is easily extruded and damaged by the pressure are caused; when simultaneously tentatively filtering the processing to screen pipe fluid, inside the unable small-size grit of avoiding is carried to the screen pipe, when small-size grit piles up too much, can cause the problem of extrusion damage to the screen pipe.
Disclosure of Invention
Aiming at the defects of the existing sieve tube capable of being prefiltered, the invention provides the sieve tube capable of being prefiltered, which has the advantages of increasing the pressure resistance outside the sieve tube, conveniently driving oil liquid to carry out secondary screening, increasing the screening efficiency, simultaneously cleaning silt accumulated between the sieve tube and the inner side filter tube, avoiding the blockage of the silt and influencing the filtration of the oil liquid, and solving the problems in the background art.
The invention provides the following technical scheme: a prefiltable sieve tube comprises a sieve tube, wherein the lower part of the sieve tube is fixedly connected with a reinforcing insertion tube, the outside of the sieve tube is provided with an outside reinforcing rib, the inside of the outside of the sieve tube is provided with a first screening hole, the inside of the sieve tube is movably sleeved with a pipeline base, the outside of the pipeline base is fixedly connected with a chute rod, the outside of the upper part of the pipeline base is fixedly connected with an inside filter tube positioning jacket, the outside of the upper part of the inside filter tube positioning jacket is movably sleeved with an inside filter tube, the outside of the inside filter tube is provided with a spiral pipeline, the inside of the inside filter tube is fixedly connected with a second screening hole, the inside of the inside filter tube is fixedly connected with an inside reinforcing jacket, the inside of the inside reinforcing jacket is movably sleeved with an inside collecting pipeline, the lower part of the inside collecting pipeline is fixedly connected with a movable pin, the outer side of the middle part of the upper end of the pipeline base is fixedly connected with a movable positioning jacket, and the outer side of the movable positioning jacket is fixedly connected with a collecting pipeline outer side sealing plate.
Preferably, the upper end of the reinforcing insertion pipe is thick, and the lower end of the reinforcing insertion pipe is thin, and the diameter of the upper opening of the reinforcing insertion pipe is smaller than that of the pipe base.
Preferably, the outer reinforcing ribs are respectively arranged outside the sieve tube at intervals of ten centimeters, eight support rods are arranged between the two outer reinforcing ribs, and chamfers are arranged on the outer sides of the outer reinforcing ribs.
Preferably, the sieve tube is internally provided with a sliding groove, the sliding groove rod is movably sleeved inside the groove, and the outer side of the pipeline base is tightly attached to the inner wall of the sieve tube.
Preferably, the inner filter pipe can perform circular motion around the inner filter pipe positioning jacket, the outer side of the spiral pipeline is tightly attached to the inner wall of the sieve pipe, the spiral pipeline is in a spiral shape, and a gear motor is installed on one side of the upper portion of the inner filter pipe.
Preferably, the inner reinforcing jacket is installed inside the inner filtering pipe at a distance of twenty centimeters, the inner side of the inner reinforcing jacket is circular, the inner collecting pipe is sequentially movably sleeved inside the inner reinforcing jacket, and the inner side of the inner reinforcing jacket is tightly attached to the outer wall of the inner collecting pipe.
Preferably, the outer sealing plate of the collecting pipeline is tightly attached to the outer side of the lower part of the inner collecting pipeline, four movable pins are mounted on the lower part of the inner collecting pipeline, and the lower part of each movable pin is movably sleeved in the lower part of the movable positioning clamping sleeve.
Preferably, the outside of screen pipe and the outside of inboard filter tube have seted up first screening hole and second screening hole respectively, the aperture that the second screening hole was seted up is less than the diameter of silt.
Compared with the prior prefilter type sieve tube, the invention has the following beneficial effects:
1. the prefiltable sieve tube conveys oil outside an oil well to a position between the sieve tube and an inner side filter tube through a first screening hole preliminarily, the preliminarily screened oil contains silt, the preliminarily filtered oil is conveyed to the inner side filter tube through a second screening hole simultaneously, the filtering sufficiency is increased when the oil is driven to be filtered, and the silt in the oil is driven to be isolated, the inner side filter tube is driven to rotate by starting a motor arranged at the upper part of the inner side filter tube, and simultaneously, when the inner side filter tube rotates, a spiral pipeline is driven to rotate, the silt blocked between the sieve tube and the joint of the inner side filter tube is driven to rotate upwards, the accumulated silt is conveniently driven to be discharged, the phenomenon that the silt is blocked inside the pipeline between the sieve tube and the inner side filter tube due to blockage of the silt is avoided, the effect that the oil permeates into the inner side filter tube is influenced, and the blocked silt can be positioned to be collected, the flexibility of oil circulation is increased.
2. This but prefilter formula screen pipe, through the inside back that passes inboard filter tube with the inboard collecting tube of device, it cup joints the inside at collecting tube outside closing plate to drive the activity of movable pin, and drive the activity of movable pin and cup joint in one side that the movable positioning pressed from both sides the cover, and rotate the movable pin, drive the inside that the rotatory joint of movable pin pressed from both sides the cover at the movable positioning, can drive the position that the movable pin pressed from both sides between the cover and the movable positioning and carry out the joint and prescribe a limit to, the outside of the inboard collecting tube lower part is cup jointed in the activity of the outside closing plate of device collecting tube simultaneously, the outside that drives inboard collecting tube seals, and through the inboard collecting tube of device pipeline extension to the inside bottom of inboard filter tube, can drive the inboard collecting tube and carry out absorptive effect to the fluid of the inside screening of inboard filter tube.
3. This but prefilter formula screen pipe, through the outside fixedly connected with outside strengthening rib with the device screen pipe, can drive the outside strengthening rib and consolidate the screen pipe, install eight bracing pieces between every section outside strengthening rib simultaneously, can drive the position between two outside strengthening ribs and splice the injectly, can increase when the outside of device outside strengthening rib to the screen pipe is consolidated, the steadiness when increasing the device screen pipe use, when avoiding the device screen pipe to install inside the oil well below the kilometer, can avoid the too big problem that causes the extrusion damage to the screen pipe of pressure.
Drawings
FIG. 1 is a schematic view of a main structure of the present invention;
FIG. 2 is a schematic cross-sectional view of a structural body of the present invention;
FIG. 3 is an exploded view of the main body of the present invention;
FIG. 4 is a schematic view of the duct base of the present invention.
In the figure: 1. a screen pipe; 2. reinforcing the cannula; 3. an outer reinforcing rib; 4. a first screening well; 5. a pipe base; 6. a chute rod; 7. the inner side of the filter pipe is provided with a positioning jacket; 8. an inner filtering pipe; 9. a helical conduit; 10. a second screening well; 11. an inner reinforcing jacket; 12. an inner collecting duct; 13. a movable pin; 14. a movable positioning jacket; 15. and a sealing plate outside the collecting pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, 2, 3 and 4, a prefiltable sieve tube comprises a sieve tube 1, wherein a reinforcing insertion tube 2 is fixedly connected to the lower portion of the sieve tube 1, the reinforcing insertion tube 2 is conveniently driven to extend into an oil well, an outer reinforcing rib 3 is installed outside the sieve tube 1, the outer side of the sieve tube 1 is driven to reinforce, and when the sieve tube 1 is driven to be installed in the oil well, the problem of accumulated pressure damage to a pipeline due to overlarge pressure is avoided, a first screening hole 4 is formed inside the outer portion of the sieve tube 1, the first screening hole 4 drives the oil well outside the oil well to primarily filter, a pipeline base 5 is movably sleeved inside the sieve tube 1, a chute rod 6 is fixedly connected to the outer side of the pipeline base 5, the chute rod 6 is movably sleeved to the inner side of the sieve tube 1 through a device, and drives the pipeline base 5 to increase flexibility when moving up and down inside the sieve tube 1, an inner filter tube positioning jacket 7 is fixedly connected to the outer side of the upper portion of the pipeline base 5, the outer part of the upper part of the inner filter tube positioning jacket 7 is movably sleeved with an inner filter tube 8, the inner filter tube positioning jacket 7 and the lower part of the inner filter tube 8 are sleeved and limited with each other, so that the position of the inner filter tube 8 can be driven to be limited, a spiral pipeline 9 is arranged outside the inner filter tube 8, a motor arranged on the outer side of the upper part of the inner filter tube 8 is started to drive the inner filter tube 8 to rotate, and the spiral pipeline 9 can be driven to rotate, and the silt accumulated between the sieve tube 1 and the inner filter tube 8 is driven to be cleaned, so that the blockage between the sieve tube 1 and the inner filter tube 8 caused by excessive silt is avoided, the function of conveying the oil to the inner side cannot be driven, the inner side of the inner filter tube 8 is fixedly connected with a second screening hole 10 to drive the oil to carry out secondary filtration, the inner side of the inner filter tube 8 is fixedly connected with an inner reinforcing jacket 11, the inner side of the inner reinforcing jacket 11 is movably sleeved with an inner collecting pipeline 12, device inboard reinforcement presss from both sides cover 11 and consolidates the inboard of inboard filter tube 8, the activity orbit of inboard collecting tube 12 is injectd simultaneously, inboard collecting tube's 12 lower part fixedly connected with removable pin 13, the outside fixedly connected with movable positioning of 5 upper ends middle parts of pipeline base presss from both sides cover 14, the outside fixedly connected with collecting tube outside closing plate 15 that the cover 14 was pressed from both sides in the movable positioning, through cup jointing removable pin 13 activity in the outside that the cover 14 was pressed from both sides in the movable positioning, rotate inboard collecting tube 12 simultaneously, drive the inside that the joint pressed from both sides cover 14 in the movable positioning of removable pin 13, can drive the position between removable pin 13 and the pipeline base 5 and splice the injectly.
Referring to fig. 1 and 2, the upper end of the reinforcing insertion pipe 2 is thick and thin, the diameter of the upper opening of the reinforcing insertion pipe 2 is smaller than that of the pipeline base 5, the reinforcing insertion pipe 2 is installed on the lower portion of the device sieve pipe 1, the opening of the lower portion of the device reinforcing insertion pipe 2 is locally reduced, the reinforcing insertion pipe 2 can be driven to be inserted into an oil well when the device reinforcing insertion pipe 2 is used, the diameter of the upper opening of the device reinforcing insertion pipe 2 is smaller than that of the pipeline base 5, and the lowest distance of the pipeline base 5 can be driven to perform a limiting function when the pipeline base 5 is pushed to move downwards.
Referring to fig. 1, outside strengthening rib 3 respectively installs one with the ten centimetres of interval in the outside of screen pipe 1, install eight bracing pieces between two outside strengthening ribs 3, the chamfer has been seted up in the outside of outside strengthening rib 3, through installing outside fixedly connected with outside strengthening rib 3 of screen pipe 1, can drive outside strengthening rib 3 and consolidate screen pipe 1, install eight bracing pieces between every section outside strengthening rib 3 simultaneously, can drive the position between two outside strengthening ribs 3 and splice the injecing, can increase when device outside strengthening rib 3 consolidates the outside of screen pipe 1, increase the steadiness when device screen pipe 1 uses, when avoiding device screen pipe 1 to install inside the oil well below kilometer, can avoid the too big problem that causes the extrusion damage to screen pipe 1 of pressure.
Referring to fig. 2 and 4, the spout has been seted up to the inside of screen pipe 1, the inside at the recess is cup jointed in the activity of chute pole 6, the inner wall of screen pipe 1 is hugged closely in the outside of pipeline base 5, spout has been seted up through the inside with screen pipe 1, and drive the inside at the spout of chute pole 6 activity cup joint, can drive device pipeline base 5 increase the steadiness of removal when screen pipe 1 inside removes, sealed pad is installed in the outside of device pipeline base 5 simultaneously, so far can drive the effect that increases the leakproofness between pipeline base 5 and the screen pipe 1 inner wall.
Referring to fig. 2 and 3, the inner filter pipe 8 can perform circular motion around the inner filter pipe positioning jacket 7, the outer side of the spiral pipe 9 is tightly attached to the inner wall of the sieve pipe 1, the spiral pipe 9 is spiral, a gear motor is installed on one side of the upper part of the inner filter pipe 8, the inner filter pipe 8 can perform circular motion around the outer part of the inner filter pipe positioning jacket 7, the gear motor is installed on the outer side of the upper part of the inner filter pipe 8 to drive the inner filter pipe 8 to rotate, the spiral pipe 9 is driven to rotate, and when the spiral pipe 9 rotates, the sand blocked between the sieve pipe 1 and the joint of the inner filter pipe 8 is driven to rotate upwards, so that the accumulated sand is conveniently driven to be discharged, the phenomenon that the sand is blocked between the sieve pipe 1 and the inner filter pipe 8 to influence the effect of oil permeating into the inner filter pipe 8 is avoided, and the blocked sand can be collected in a positioning manner, the flexibility of oil circulation is increased.
Referring to fig. 3, an inner reinforcing jacket 11 is installed inside the inner filtering pipe 8 at an interval of twenty centimeters, the inner side of the inner reinforcing jacket 11 is circular, the inner collecting pipe 12 is movably sleeved inside the inner reinforcing jacket 11 in sequence, the inner side of the inner reinforcing jacket 11 is tightly attached to the outer wall of the inner collecting pipe 12, the inner reinforcing jacket 11 is fixedly connected with the inner side of the inner filtering pipe 8 and drives the inner reinforcing jacket 11 to limit the outer side of the inner collecting pipe 12, so that the inner collecting pipe 12 can be conveniently positioned when installed, meanwhile, the inner reinforcing jacket 11 is installed inside the inner filtering pipe 8, the inner side of the inner filtering pipe 8 can be limited by extrusion, and the inner filtering pipe 8 is driven to increase the pressure resistance when used.
Referring to fig. 4, the outer sealing plate 15 of the collecting pipe is tightly attached to the outer side of the lower portion of the inner collecting pipe 12, four movable pins 13 are installed on the lower portion of the inner collecting pipe 12, the lower portion of each movable pin 13 is movably sleeved inside the lower portion of the movable positioning jacket 14, the inner collecting pipe 12 of the device is passed through the inner filtering pipe 8, the movable pins 13 are driven to be movably sleeved inside the outer sealing plate 15 of the collecting pipe, the movable pins 13 are driven to be movably sleeved on one side of the movable positioning jacket 14, the movable pins 13 are driven to be rotatably clamped inside the movable positioning jacket 14, the position between the movable pins 13 and the movable positioning jacket 14 can be driven to be clamped and limited, the outer sealing plate 15 of the outer collecting pipe is movably sleeved outside the lower portion of the inner collecting pipe 12, the outer side of the inner collecting pipe 12 is driven to be sealed, and extends to the bottom end inside the inner filtering pipe 8 through the inner collecting pipe 12 of the device, the inner collecting pipe 12 can be driven to absorb the oil screened in the inner filtering pipe 8.
Referring to fig. 2 and 3, first screening hole 4 and second screening hole 10 have been seted up respectively to the outside of screen pipe 1 and the outside of inboard filter tube 8, the aperture that second screening hole 10 was seted up is less than the diameter of silt, through carrying the outside fluid of oil well between screen pipe 1 and the inboard filter tube 8 through first screening hole 4 tentatively, the fluid of while tentatively screening contains silt, the inside of tentatively filterable fluid carried inboard filter tube 8 through second screening hole 10 simultaneously, when can driving fluid and filtering, increase filterable sufficiency, and drive the effect that silt in the fluid carries out completely cut off.
The working principle is as follows: when in use, the sieve tube 1 is extended to the inside of an oil well, the reinforcing insertion tube 2 is driven to be inserted into the oil well, the pipeline base 5 is movably sleeved on the inside of the sieve tube 1, the sliding chute rod 6 is driven to be movably sleeved inside the sieve tube 1, so that the flexibility of the pipeline base 5 can be increased when in movement, after the pipeline base 5 is moved to a corresponding position, the inner side collecting pipeline 12 penetrates through the inside of the inner side reinforcing jacket 11, the movable pin 13 arranged at the lower part of the inner side collecting pipeline 12 is driven to be movably sleeved inside the outer side sealing plate 15 of the collecting pipeline, the inner side collecting pipeline 12 is rotated, the movable pin 13 is driven to be clamped inside the lower part of the movable positioning jacket 14, so that the position between the inner side collecting pipeline 12 and the pipeline base 5 can be driven to be spliced and limited, and simultaneously, when in use, the oil is preliminarily filtered between the sieve tube 1 and the inner side filtering tube 8 through the first screening hole 4, simultaneously prefilter's fluid is carried to the inside of inboard filter tube 8 through second screening hole 10, and set up the recess in the outside of inboard collecting pipe 12 lower part, can drive the fluid after the filtration and extract, long-term the back of using simultaneously, when piling up more silt between screen pipe 1 and the inboard filter tube 8, through starting gear motor, it is rotatory to drive inboard filter tube 8, can drive the rotation of helical tube 9, and drive helical tube 9 and extract the silt of centre gripping between screen pipe 1 and the inboard filter tube 8, avoid silt too much to cause the problem of jam to this.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A prefiltable screen comprising a screen (1), characterized in that: the sieve tube is characterized in that a reinforcing insertion tube (2) is fixedly connected to the lower portion of the sieve tube (1), an outer reinforcing rib (3) is installed outside the sieve tube (1), a first screening hole (4) is formed in the outer portion of the sieve tube (1), a pipeline base (5) is movably sleeved inside the sieve tube (1), a sliding chute rod (6) is fixedly connected to the outer side of the pipeline base (5), an inner filtering tube positioning jacket (7) is fixedly connected to the outer side of the upper portion of the pipeline base (5), an inner filtering tube (8) is movably sleeved outside the upper portion of the inner filtering tube positioning jacket (7), a spiral pipeline (9) is installed outside the inner filtering tube (8), a second screening hole (10) is fixedly connected to the inner side of the inner filtering tube (8), and an inner reinforcing jacket (11) is fixedly connected to the inner side of the inner filtering tube (8), the inner side reinforcing jacket is characterized in that an inner side collecting pipeline (12) is sleeved on the inner portion of the inner side reinforcing jacket (11), a movable pin (13) is fixedly connected to the lower portion of the inner side collecting pipeline (12), a movable positioning jacket (14) is fixedly connected to the outer side of the middle portion of the upper end of the pipeline base (5), and a collecting pipeline outer side sealing plate (15) is fixedly connected to the outer side of the movable positioning jacket (14).
2. The prefiltable screen of claim 1 wherein: the upper end of the reinforcing insertion pipe (2) is thick, the lower end of the reinforcing insertion pipe is thin, and the diameter of an upper opening of the reinforcing insertion pipe (2) is smaller than that of the pipeline base (5).
3. The prefiltable screen of claim 1 wherein: the sieve tube is characterized in that the outer reinforcing ribs (3) are respectively arranged outside the sieve tube (1) at intervals of ten centimeters, eight support rods are arranged between the outer reinforcing ribs (3), and chamfers are arranged on the outer sides of the outer reinforcing ribs (3).
4. The prefiltable screen of claim 1 wherein: the sieve tube is characterized in that a sliding groove is formed in the sieve tube (1), a sliding groove rod (6) is movably sleeved in the groove, and the outer side of the pipeline base (5) is tightly attached to the inner wall of the sieve tube (1).
5. The prefiltable screen of claim 1 wherein: the inner side filter pipe (8) can move circularly around the inner side filter pipe positioning jacket (7), the outer side of the spiral pipeline (9) is tightly attached to the inner wall of the sieve pipe (1), the spiral pipeline (9) is spiral, and a gear motor is installed on one side of the upper part of the inner side filter pipe (8).
6. The prefiltable screen of claim 1 wherein: the inner reinforcing jacket (11) is installed in the inner filter pipe (8) at a distance of twenty centimeters, the inner side of the inner reinforcing jacket (11) is circular, the inner collecting pipeline (12) is sequentially movably sleeved in the inner reinforcing jacket (11), and the inner side of the inner reinforcing jacket (11) is tightly attached to the outer wall of the inner collecting pipeline (12).
7. The prefiltable screen of claim 1 wherein: the collecting pipeline outer side sealing plate (15) is tightly attached to the outer side of the lower portion of the inner side collecting pipeline (12), four movable pins (13) are mounted on the lower portion of the inner side collecting pipeline (12), and the lower portion of each movable pin (13) is movably sleeved inside the lower portion of the movable positioning clamping sleeve (14).
8. The prefiltable screen of claim 1 wherein: first screening hole (4) and second screening hole (10) have been seted up respectively to the outside of screen pipe (1) and the outside of inboard filter tube (8), the aperture that second screening hole (10) were seted up is less than the diameter of silt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111213022.2A CN113756761B (en) | 2021-10-19 | 2021-10-19 | But prefilter formula screen pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111213022.2A CN113756761B (en) | 2021-10-19 | 2021-10-19 | But prefilter formula screen pipe |
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| Publication Number | Publication Date |
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| CN113756761A true CN113756761A (en) | 2021-12-07 |
| CN113756761B CN113756761B (en) | 2023-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024131686A1 (en) * | 2022-12-20 | 2024-06-27 | 中国石油化工股份有限公司 | Pack screen and bypass connector configured to connect to pack screen |
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| CN113756761B (en) | 2023-02-21 |
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