CN114776265A - Flexible inserting device and method for sieve tube - Google Patents
Flexible inserting device and method for sieve tube Download PDFInfo
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- CN114776265A CN114776265A CN202210321997.5A CN202210321997A CN114776265A CN 114776265 A CN114776265 A CN 114776265A CN 202210321997 A CN202210321997 A CN 202210321997A CN 114776265 A CN114776265 A CN 114776265A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000000149 penetrating effect Effects 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 238000001914 filtration Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- 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
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- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
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Abstract
The invention discloses a flexible plugging device and a method for a sieve tube, wherein the device comprises a sieve tube male joint, a sieve tube female joint and a flexible bolt; the side wall of the sieve tube male joint is provided with an annular groove I, the side wall of the sieve tube female joint is provided with an annular groove II, after the sieve tube male joint and the sieve tube female joint are spliced, the annular groove I can be opposite to the annular groove II to form a bolt annular hole, and the bolt annular hole is communicated with a bolt inlet on the side wall of the sieve tube female joint; the flexible bolt comprises a rotating end head, a bolt connecting head, a flexible rod, a bolt guiding head and a plurality of bolt supporting bodies penetrating the flexible rod, wherein the rotating end head, the bolt connecting head, the flexible rod and the bolt guiding head are sequentially connected; the rotary end head is rotatably connected with the bolt connecting head; the bolt guide head, the flexible rod and the bolt support body of the flexible bolt can enter the bolt annular hole along the bolt inlet, and the rotating end head can be screwed at the bolt inlet. The invention has simple structure, meets the required strength and can be maintained after being damaged; the connection of the flexible latches enclosed in the joint prevents the screen from falling into the hole when the components are damaged.
Description
Technical Field
The invention belongs to the technical field of sieve tube connection, and relates to a sieve tube flexible splicing device and a sieve tube flexible splicing method.
Background
The sieve tube has a prominent position in the industrial filtration industry, and is particularly widely applied to the fields of sand control filtration of water wells and oil and gas wells, environmental protection restoration filtration of underground water and the like. The sieve tube is composed of a sieve tube and a joint, the sieve tube is a filtering working part, the joint is responsible for being connected with an upper sieve tube and a lower sieve tube or other tubular columns, and the connection strength and the loading and unloading efficiency of the joint are related to whether the sieve tube can meet the requirements of safety, stability and high efficiency in work, lifting, placing and maintenance. In the common connection mode, the plug-in connection structure is simplest, can meet certain strength requirements, and is smoother than the clamp connection; the common damage form is bolt damage, the sieve tube can be continuously used after the bolt is replaced, and in contrast, once the threads in the threaded connection mode are damaged, the sieve tube is failed and cannot be used, and certain cost waste is caused. Although the conventional plug-in connection structure has certain advantages, the plug pin is not provided with a plug interface matched with an automatic loading and unloading tool, the plug pin needs to be manually loaded and unloaded, and the loading and unloading efficiency is still required to be improved; the bolt needs to be replaced integrally after being partially damaged, and the utilization rate is low. The existing screen pipe joint is of a quick-inserting structure, but the device is complex, so that the failure occurrence probability is increased, and the maintenance cost and time are improved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a flexible plugging device and a flexible plugging method for a sieve tube, and solves the problems of low unloading efficiency, high failure occurrence rate and the like of the existing plugging connection structure.
In order to solve the technical problems, the invention adopts the following technical scheme to realize:
a screen pipe flexible plugging device comprises a screen pipe male joint, a screen pipe female joint and a flexible bolt;
the side wall of the sieve tube male joint is provided with an annular groove I, the side wall of the sieve tube female joint is provided with an annular groove II, after the sieve tube male joint and the sieve tube female joint are spliced, the annular groove I can be opposite to the annular groove II to form a bolt annular hole, and the bolt annular hole is communicated with a bolt inlet in the side wall of the female joint;
the flexible bolt comprises a rotating end head, a bolt connecting head, a flexible rod, a bolt guiding head and a plurality of bolt supporting bodies penetrating the flexible rod, wherein the rotating end head, the bolt connecting head, the flexible rod and the bolt guiding head are sequentially connected; the rotary end head is rotatably connected with the bolt connecting head;
the bolt guide head, the flexible rod and the bolt support body of the flexible bolt can enter the bolt annular hole along the bolt inlet, and the rotating end head can be screwed at the bolt inlet.
The invention also comprises the following technical characteristics:
specifically, the sieve tube male joint is provided with a central through hole and comprises a male joint body, a sieve tube connecting section I and an inserting section I, wherein the sieve tube connecting section I and the inserting section I are positioned at two ends of the male joint body;
the sieve tube female joint is provided with a central through hole and comprises a female joint body, a sieve tube connecting section II and an inserting section II, wherein the sieve tube connecting section II and the inserting section II are positioned at two ends of the female joint body;
the plug section I can be inserted into the plug section II in a matching mode, so that the annular groove I and the annular groove II are opposite to form the plug pin annular hole.
Specifically, the external diameter of the insertion section I is equal to or slightly smaller than the internal diameter of the insertion section II so that the insertion section I can be just inserted into the insertion section II, the external diameter of the insertion section I is smaller than the external diameter of the male connector body, and the internal diameter of the insertion section II is larger than the internal diameter of the female connector body.
Specifically, the groove-shaped structures of the annular groove I and the annular groove II are the same, and the groove-shaped structures are semicircular or rectangular or right-angled trapezoid.
Specifically, the rotating end head is connected with the bolt connecting head through a rotating sliding pin;
the pin connecting head is connected with the flexible rod through a pin shaft, a hinge wheel and a locking pin, and the flexible rod is connected with the pin guiding head through a pin shaft, a hinge wheel and a locking pin.
Specifically, the rotary end head comprises a cylindrical rotary end head body, the outer wall of the rotary end head body is provided with threads, and the side wall of the rotary end head body is provided with a rotating slide pin hole; the center through hole of the rotating end body is a step hole, the small-diameter end of the step hole is a plug interface, the large-diameter end of the step hole is a mounting port, and the mounting port corresponds to and is communicated with the rotating slide pin hole;
the bolt connecting head comprises a bolt connecting head body, and two ends of the bolt connecting head body are respectively provided with an installation end and a connecting end; the mounting end can extend into the mounting port, the outer wall of the mounting end is provided with an annular groove, the annular groove is opposite to the rotating sliding pin hole, and the rotating sliding pin can be arranged in the rotating sliding pin hole and the annular groove to realize the rotatable connection of the rotating end head and the bolt connecting head; the end part of the connecting end is provided with a hinge wheel mounting groove A, the side wall of the connecting end is provided with two pin shaft holes A with threads communicated with the hinge wheel mounting groove A, and the two pin shaft holes A are positioned at the upper side and the lower side of the hinge wheel mounting groove A;
the bolt guide head comprises a bolt guide head body, one end of the bolt guide head body is an arc-shaped guide head, the end surface of the other end of the bolt guide head body is provided with a hinged wheel mounting groove B, the side wall of the bolt guide head body is provided with two threaded pin shaft holes B communicated with the hinged wheel mounting groove B, and the two pin shaft holes B are positioned on the upper side and the lower side of the hinged wheel mounting groove B;
the two hinge wheels are respectively arranged in the hinge wheel mounting groove A and the hinge wheel mounting groove B; the hinge wheel is provided with a shaft hole which penetrates through the hinge wheel from top to bottom, and the hinge wheel is also provided with a flexible rod hole which penetrates through the hinge wheel and is vertical to the shaft hole and communicated with the shaft hole; the hinge wheel is also provided with a locking pin hole which is vertical to the shaft hole and communicated with the flexible rod hole;
after two ends of the flexible rod respectively penetrate through the flexible rod holes on the hinge wheel, the locking pin is arranged in the locking pin hole to fasten the flexible rod; the shaft hole of the hinged wheel arranged in the hinged wheel mounting groove A is coaxially communicated with the pin shaft hole A, and the pin shaft is arranged in the pin shaft hole A and the shaft hole to fixedly connect the hinged wheel and the pin joint; the shaft hole of the hinge wheel arranged in the hinge wheel mounting groove B is coaxially communicated with the pin shaft hole B, and the pin shaft is arranged in the pin shaft hole B and the shaft hole and can fixedly connect the hinge wheel with the pin guide head.
Specifically, the structure of the bolt supporting body is a sphere with a central hole or a cylinder with a central hole.
A method of assembling a flexible latch, the method assembling the flexible latch comprising:
step a1, inserting the mounting end of the plug pin connector into the mounting hole of the rotary end head in a matching manner, wherein the pin hole of the rotary end head is opposite to the annular groove of the plug pin connector, rotating the sliding pin to be inserted into the pin hole and the annular groove to axially limit the rotary end head and the plug pin connector, and the rotary end head can rotate relative to the plug pin connector;
step a2, stringing a plurality of bolt supporting bodies on a flexible rod, enabling two ends of the flexible rod to penetrate into flexible rod holes of hinge wheels, and installing locking screw pins into locking screw pin holes to lock two ends of the flexible rod in the two hinge wheels;
step a3, placing the two hinged wheels in the hinged wheel mounting groove A and the hinged wheel mounting groove B respectively, installing the pin shaft in the pin shaft hole A and the shaft hole to fix the hinged wheels in the pin joint, and installing the pin shaft in the pin shaft hole B and the shaft hole to fix the hinged wheels in the pin guide head.
The method for assembling the screen pipe flexible inserting and connecting device is used for assembling the screen pipe flexible inserting and connecting device, and the initial state of the screen pipe flexible inserting and connecting device during assembling is as follows: the screen pipe male joint is not connected with the screen pipe female joint, and the flexible bolt is assembled and positioned outside the screen pipe male joint and the screen pipe female joint; the method comprises the following steps:
step b1, inserting the inserting section I of the screen pipe male joint into the inserting section II of the screen pipe female joint;
b2, aligning the bolt guide head of the flexible bolt with the bolt inlet of the screen pipe female joint;
step b3, pushing the flexible bolt into a bolt annular hole between the screen pipe female joint and the screen pipe male joint from the bolt inlet of the screen pipe female joint;
step b4, when only the rotary end is exposed outside the screen pipe female joint, the rotary end is rotated and only the rotary end rotates at the moment, the part of the flexible bolt which is inserted into the bolt annular hole is not influenced, the rotary end is screwed into the bolt inlet of the screen pipe female joint, and after the rotary end is completely screwed in, the flexible bolt is screwed up.
A method for disassembling a screen pipe flexible plugging device is used for disassembling the screen pipe flexible plugging device, and the initial state of the screen pipe flexible plugging device during disassembly is as follows: the screen pipe male joint is inserted into the screen pipe female joint, and the flexible bolt is arranged in a bolt annular hole in the screen pipe; the method comprises the following steps:
step c1, rotating the rotating end of the flexible bolt;
step c2, pulling out the flexible bolt after the rotating end of the flexible bolt is completely screwed out from the bolt inlet of the screen pipe female joint;
and step c3, pulling the flexible bolt to completely take out the flexible bolt from the annular hole of the bolt, separating the male joint and the female joint of the screen pipe, and completing the disassembly.
The invention has the following technical effects:
1. the sieve tube connection structure has the advantages that the sieve tube connection utilization rate is further improved, the main failure mode during connection is that the bolt is damaged, the sieve tube can be used in subsequent construction, and the sieve tube utilization rate is increased; the flexible bolt is the modularization setting, and the maintenance can be changed in the damage of bolt part, increases the utilization ratio of bolt, and the promotion of utilization ratio helps saving on the cost.
2. The invention improves the loading and unloading efficiency of the sieve tube connection, provides the plugging interface of the pin body compared with the sieve tube connected by the conventional plugging, can improve the loading and unloading efficiency after being matched with an automatic disassembling tool for use, and also provides a window for automatic loading and unloading.
3. The screen pipe joint achieves a 'bad but not falling' state, the main damage form of the bolt during the connection is the damage of the bolt supporting body, the bolt rotating end of the flexible bolt is screwed into the screen pipe female joint, and the bolt supporting body of the flexible bolt is sealed in the screen pipe joint, so that the bolt supporting body can still play a role in connecting two screen pipes even if the bolt supporting body is damaged, and the economic loss caused by the breakage accident is reduced.
Drawings
FIG. 1 is a schematic sectional view of the assembled male and female screen joints and flexible plug of the present invention;
FIG. 2 is a schematic cross-sectional view of a quarter of the male joint of the screen of the present invention;
FIG. 3 is a cross-sectional view of a quarter of the screen pipe box joint of the present invention;
FIG. 4 is a schematic cross-sectional view of the annular groove of the male or female joint of the screen pipe of the present invention;
FIG. 5 is a schematic cross-sectional view of the flexible plug according to the present invention;
FIG. 6 is a schematic cross-sectional view of the rotary end of the flexible latch according to the present invention;
FIG. 7 is a cross-sectional view of the flexible plug of the present invention;
FIG. 8 is a cross-sectional view of the hinge wheel of the flexible latch of the present invention;
FIG. 9 is a schematic cross-sectional view of the locking of the hinge wheel and the flexible rod of the flexible plug of the present invention;
FIG. 10 is a cross-sectional view of the latch support of the flexible latch of the present invention;
fig. 11 is a schematic sectional structural view of a pin guide head of the flexible pin of the present invention.
The meaning of the individual reference symbols in the figures is:
1. the sieve tube male joint, 2, the sieve tube female joint, 3, the flexible bolt and 4, the bolt annular hole;
1-1, a screen cylinder connecting section I, 1-2, an inserting section I, 1-3, an annular groove I, 1-4 and a sealing ring;
2-1, screen cylinder connecting section II, 2-2, plug-in section II, 2-3, annular groove II, 2-4, bolt inlet;
31. rotating end head, 32, bolt connecting head, 33, flexible rod, 34, bolt guiding head, 35, bolt supporting body, 36, rotating sliding pin, 37, pin shaft, 38, hinged wheel, 39 and locking pin;
31-1, rotating the end body, 31-2, rotating the slide pin hole, 31-3, plugging and unplugging the interface, and 31-4, installing the port;
32-1, a bolt connecting head body, 32-2, an annular groove, 32-3, a hinge wheel mounting groove A and 32-4, a bolt shaft hole A;
34-1, a bolt guide head body, 34-2, an arc guide head, 34-3, a hinge wheel mounting groove B, 34-4, a bolt shaft hole B;
38-1, shaft hole, 38-2, flexible rod hole and 38-3, locking pin hole.
Detailed Description
The following embodiments are given as examples of the present invention, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are included in the protection scope of the present invention.
Example 1:
as shown in fig. 1 to 11, the present embodiment provides a screen flexible plugging device, which comprises a screen male joint 1, a screen female joint 2 and a flexible plug 3.
The side wall of the sieve tube male joint 1 is provided with an annular groove I1-3, the side wall of the sieve tube female joint 2 is provided with an annular groove II2-3, after the sieve tube male joint 1 and the sieve tube female joint 2 are spliced, the annular groove I1-3 can be opposite to the annular groove II2-3 to form a bolt annular hole 4, and the bolt annular hole 4 is communicated with a bolt inlet 2-4 in the side wall of the sieve tube female joint 2;
the flexible bolt 3 comprises a rotating end head 31, a bolt connecting head 32, a flexible rod 33, a bolt guiding head 34 and a plurality of bolt supporting bodies 35 penetrating through the flexible rod 33 which are connected in sequence; the rotating end head 31 is rotatably connected with the bolt connecting head 32;
the bolt guide head 34, the flexible rod 33 and the bolt support body 35 of the flexible bolt 3 can enter the bolt annular hole 4 along the bolt entrance 2-4, and the rotating end 31 can be screwed at the bolt entrance 2-4.
The sieve tube male joint 1 is provided with a central through hole and comprises a male joint body, a sieve tube connecting section I1-1 and a plug-in section I1-2 which are positioned at two ends of the male joint body, wherein the outer wall of the plug-in section I1-2 is provided with an annular groove I1-3 and a sealing ring 1-4;
the sieve tube female joint 2 is provided with a central through hole and comprises a female joint body, a sieve tube connecting section II2-1 and an inserting section II2-2 which are positioned at two ends of the female joint body, wherein the inner wall of the inserting section II2-2 is provided with an annular groove II2-3, the side wall of the inserting section II2-2 is provided with a bolt inlet 2-4 penetrating through the side wall, the bolt inlet 2-4 is communicated with the annular groove II2-3, and the bolt inlet 2-4 is provided with internal threads;
the plug section I1-2 can be inserted into the plug section II2-2 in a matching way, so that the annular groove I1-3 and the annular groove II2-3 are opposite to form a plug-pin annular hole 4.
The outer diameter of the plug section I1-2 is equal to or slightly smaller than the inner diameter of the plug section II2-2, so that the plug section I1-2 can be just inserted into the plug section II2-2, the outer diameter of the plug section I1-2 is smaller than the outer diameter of the male connector body, and the inner diameter of the plug section II2-2 is larger than the inner diameter of the female connector body.
The groove-shaped structure of the annular groove I1-3 is the same as that of the annular groove II2-3, the groove-shaped structure is semicircular or rectangular or right-angled trapezoid, and specifically, the right-angled trapezoid structure is obtained by rotating a rectangular structure for a certain angle.
The rotating end head 31 and the bolt connecting head 32 are connected through a rotating sliding pin 36;
the pin connecting head 32 is connected with the flexible rod 33 through a pin shaft 37, a hinge wheel 38 and a locking pin 39, and the flexible rod 33 is connected with the pin guiding head 34 through the pin shaft 37, the hinge wheel 38 and the locking pin 39.
The rotating end head 31 comprises a cylindrical rotating end head body 31-1, the outer wall of the rotating end head body 31-1 is provided with threads, and the side wall of the rotating end head body 31-1 is provided with a rotating slide pin hole 31-2; the central through hole of the rotating end body 31-1 is a stepped hole, the small diameter end of the stepped hole is a plug interface 31-3, the large diameter end of the stepped hole is a mounting port 31-4, and the mounting port 31-4 corresponds to and is communicated with the rotating slide pin hole 31-2;
the plug pin connecting head 32 comprises a plug pin connecting head body 32-1, and two ends of the plug pin connecting head body 32-1 are respectively an installation end and a connecting end; the mounting end can extend into the mounting opening 31-4, the outer wall of the mounting end is provided with an annular groove 32-2, the annular groove 32-2 is opposite to the rotating sliding pin hole 31-2, and the rotating sliding pin 36 can be arranged in the rotating sliding pin hole 31-2 and the annular groove 32-2 to realize the rotatable connection of the rotating end 31 and the bolt connecting head 32; the end part of the connecting end is provided with a hinge wheel mounting groove A32-3, the side wall of the connecting end is provided with two pin shaft holes A32-4 with threads communicated with the hinge wheel mounting groove A32-3, and the two pin shaft holes A32-4 are positioned at the upper side and the lower side of the hinge wheel mounting groove A32-3;
the bolt guide head 34 comprises a bolt guide head body 34-1, one end of the bolt guide head body 34-1 is an arc-shaped guide head 34-2, the end face of the other end is provided with a hinge wheel mounting groove B34-3, the side wall of the bolt guide head body 34-1 is provided with two threaded bolt shaft holes B34-4 communicated with the hinge wheel mounting groove B34-3, and the two bolt shaft holes B34-4 are positioned at the upper side and the lower side of the hinge wheel mounting groove B34-3;
two hinge wheels 38 are provided, and the two hinge wheels 38 are respectively arranged in a hinge wheel mounting groove A32-3 and a hinge wheel mounting groove B34-3; the hinge wheel 38 is provided with a shaft hole 38-1, the shaft hole 38-1 penetrates through the hinge wheel 38 from top to bottom, the hinge wheel 38 is also provided with a flexible rod hole 38-2 penetrating through the hinge wheel 38, and the flexible rod hole 38-2 is vertical to the shaft hole 38-1 and is communicated with the shaft hole 38-1; the hinge wheel 38 is also provided with a locking pin hole 38-3, and the locking pin hole 38-3 is vertical to the shaft hole 38-1 and communicated with the flexible rod hole 38-2;
after two ends of the flexible rod 33 respectively penetrate through the flexible rod holes 38-2 on the hinge wheel 38, the locking pin 39 is arranged in the locking pin hole 38-3 to fasten the flexible rod 33; the shaft hole 38-1 of the hinge wheel 38 arranged in the hinge wheel mounting groove A32-3 is coaxially communicated with the pin shaft hole A32-4, and the pin shaft 37 is arranged in the pin shaft hole A32-4 and the shaft hole 38-1 to fixedly connect the hinge wheel 38 and the pin joint 32; the shaft hole 38-1 of the hinge wheel 38 arranged in the hinge wheel mounting groove B34-3 is coaxially communicated with the pin shaft hole B34-4, and the pin shaft 37 is arranged in the pin shaft hole B34-4 and the shaft hole 38-1 to fixedly connect the hinge wheel 38 and the pin guide head 34.
The latch support 35 is configured as a sphere with a central hole or a cylinder with a central hole.
Example 2:
the present embodiment provides an assembling method of a flexible plug pin, which assembles the flexible plug pin of embodiment 1, including:
step a1, inserting the mounting end of the plug pin connector into the mounting hole of the rotary end head in a matching manner, wherein the pin hole of the rotary end head is opposite to the annular groove of the plug pin connector, rotating the sliding pin to be inserted into the pin hole and the annular groove to axially limit the rotary end head and the plug pin connector, and the rotary end head can rotate relative to the plug pin connector;
step a2, stringing a plurality of bolt supports on a flexible rod, penetrating two ends of the flexible rod into flexible rod holes of hinge wheels, and installing locking screw pins into locking screw pin holes to lock two ends of the flexible rod in the two hinge wheels;
step a3, placing the two hinged wheels in the hinged wheel mounting groove A and the hinged wheel mounting groove B respectively, installing the pin shaft in the pin shaft hole A and the shaft hole to fix the hinged wheels in the pin joint, and installing the pin shaft in the pin shaft hole B and the shaft hole to fix the hinged wheels in the pin guide head.
Example 3:
the present embodiment provides an assembling method of a flexible screen pipe plugging device, which assembles the flexible screen pipe plugging device of embodiment 1, and the initial state of the flexible screen pipe plugging device during assembly is as follows: the screen pipe male joint is not connected with the screen pipe female joint, and the flexible bolt is assembled and positioned outside the screen pipe male joint and the screen pipe female joint; the method comprises the following steps:
step b1, inserting the inserting section I of the screen pipe male joint into the inserting section II of the screen pipe female joint;
b2, aligning the bolt guide head of the flexible bolt with the bolt inlet of the screen pipe female joint;
step b3, pushing the flexible bolt into a bolt annular hole between the screen pipe female joint and the screen pipe male joint from the bolt inlet of the screen pipe female joint;
step b4, when only the rotary end is exposed outside the screen pipe female joint, the rotary end is rotated and only the rotary end rotates at the moment, the part of the flexible bolt which is inserted into the bolt annular hole is not influenced, the rotary end is screwed into the bolt inlet of the screen pipe female joint, and after the rotary end is completely screwed in, the flexible bolt is screwed up.
Example 4:
the present embodiment provides a method for detaching a sieve tube flexible plugging device in embodiment 1, where the sieve tube flexible plugging device is detached in an initial state: the screen pipe male joint is inserted in the screen pipe female joint, and the flexible bolt is arranged in a bolt annular hole in the screen pipe; the method comprises the following steps:
step c1, rotating the rotating end of the flexible bolt;
step c2, pulling the flexible bolt after the rotary end of the flexible bolt is completely screwed out of the bolt inlet of the screen pipe female joint;
and c3, pulling the flexible bolt to completely take out the flexible bolt from the annular hole of the bolt, separating the screen pipe male joint from the screen pipe female joint, and completing the disassembly.
Claims (10)
1. A screen pipe flexible plugging device is characterized by comprising a screen pipe male joint (1), a screen pipe female joint (2) and a flexible plug pin (3);
the sieve tube male joint (1) side wall is provided with an annular groove I (1-3), the sieve tube female joint (2) side wall is provided with an annular groove II (2-3), after the sieve tube male joint (1) and the sieve tube female joint (2) are spliced, the annular groove I (1-3) can be opposite to the annular groove II (2-3) to form a bolt annular hole (4), and the bolt annular hole (4) is communicated with a bolt inlet (2-4) of the sieve tube female joint (2) side wall;
the flexible bolt (3) comprises a rotating end head (31), a bolt connecting head (32), a flexible rod (33), a bolt guiding head (34) and a plurality of bolt supporting bodies (35) penetrating through the flexible rod (33) which are connected in sequence; the rotating end head (31) is rotatably connected with the bolt connecting head (32);
a bolt guide head (34), a flexible rod (33) and a bolt support body (35) of the flexible bolt (3) can enter the bolt annular hole (4) along the bolt inlet (2-4), and the rotating end head (31) can be screwed at the bolt inlet (2-4).
2. The screen pipe flexible plug device according to claim 1, wherein the screen pipe male joint (1) is provided with a central through hole and comprises a male joint body, a screen cylinder connecting section I (1-1) and a plug section I (1-2) which are positioned at two ends of the male joint body, and the outer wall of the plug section I (1-2) is provided with the annular groove I (1-3) and the sealing ring (1-4);
the sieve tube female joint (2) is provided with a central through hole and comprises a female joint body, a sieve tube connecting section II (2-1) and an inserting section II (2-2), wherein the sieve tube connecting section II (2-1) and the inserting section II (2-2) are positioned at two ends of the female joint body, the annular groove II (2-3) is arranged on the inner wall of the inserting section II (2-2), a bolt inlet (2-4) penetrating through the side wall is formed in the side wall of the inserting section II (2-2), the bolt inlet (2-4) is communicated with the annular groove II (2-3), and an internal thread is formed in the bolt inlet (2-4);
the plug section I (1-2) can be inserted into the plug section II (2-2) in a matching mode, so that the annular groove I (1-3) and the annular groove II (2-3) are opposite to form the plug pin annular hole (4).
3. The screen pipe flexible plugging device of claim 2, wherein the outer diameter of the plugging section I (1-2) is equal to or slightly smaller than the inner diameter of the plugging section II (2-2) so that the plugging section I (1-2) can be just plugged into the plugging section II (2-2), the outer diameter of the plugging section I (1-2) is smaller than the outer diameter of the male connector body, and the inner diameter of the plugging section II (2-2) is larger than the inner diameter of the female connector body.
4. The screen pipe flexible plug device according to claim 1, wherein the annular grooves I (1-3) and II (2-3) have the same groove-shaped structure, and the groove-shaped structure is semicircular or rectangular or right trapezoid.
5. The screen pipe flexible plugging device according to claim 1, wherein the rotating end head (31) and the plug connecting head (32) are connected by a rotating sliding pin (36);
the bolt connecting head (32) is connected with the flexible rod (33) through a pin shaft (37), a hinge wheel (38) and a locking pin (39), and the flexible rod (33) is connected with the bolt guide head (34) through the pin shaft (37), the hinge wheel (38) and the locking pin (39).
6. The screen pipe flexible plugging device according to claim 5, wherein the rotating end head (31) comprises a cylindrical rotating end head body (31-1), the outer wall of the rotating end head body (31-1) is provided with threads, and the side wall of the rotating end head body (31-1) is provided with a rotating slide pin hole (31-2); the central through hole of the rotating end body (31-1) is a stepped hole, the small-diameter end of the stepped hole is a plug interface (31-3), the large-diameter end of the stepped hole is an installation port (31-4), and the installation port (31-4) corresponds to and is communicated with the rotating slide pin hole (31-2);
the plug pin connecting head (32) comprises a plug pin connecting head body (32-1), and two ends of the plug pin connecting head body (32-1) are respectively provided with an installation end and a connecting end; the mounting end can extend into the mounting opening (31-4), the outer wall of the mounting end is provided with an annular groove (32-2), the annular groove (32-2) is opposite to the rotating sliding pin hole (31-2), and the rotating sliding pin (36) can be arranged in the rotating sliding pin hole (31-2) and the annular groove (32-2) to realize the rotatable connection of the rotating end (31) and the bolt connecting head (32); the end part of the connecting end is provided with a hinge wheel mounting groove A (32-3), the side wall of the connecting end is provided with two pin shaft holes A (32-4) which are communicated with the hinge wheel mounting groove A (32-3) and provided with threads, and the two pin shaft holes A (32-4) are positioned at the upper side and the lower side of the hinge wheel mounting groove A (32-3);
the bolt guide head (34) comprises a bolt guide head body (34-1), one end of the bolt guide head body (34-1) is an arc-shaped guide head (34-2), the end surface of the other end is provided with a hinged wheel mounting groove B (34-3), the side wall of the bolt guide head body (34-1) is provided with two threaded pin shaft holes B (34-4) communicated with the hinged wheel mounting groove B (34-3), and the two pin shaft holes B (34-4) are positioned at the upper side and the lower side of the hinged wheel mounting groove B (34-3);
two hinge wheels (38) are arranged, and the two hinge wheels (38) are respectively arranged in the hinge wheel mounting groove A (32-3) and the hinge wheel mounting groove B (34-3); the hinge wheel (38) is provided with a shaft hole (38-1), the shaft hole (38-1) penetrates through the hinge wheel (38) from top to bottom, the hinge wheel (38) is also provided with a flexible rod hole (38-2) penetrating through the hinge wheel (38), and the flexible rod hole (38-2) is vertical to the shaft hole (38-1) and is communicated with the shaft hole (38-1); the hinge wheel (38) is also provided with a locking pin hole (38-3), and the locking pin hole (38-3) is vertical to the shaft hole (38-1) and communicated with the flexible rod hole (38-2);
after two ends of the flexible rod (33) respectively penetrate through the flexible rod holes (38-2) on the hinge wheel (38), the locking pin (39) is arranged in the locking pin hole (38-3) to fasten the flexible rod (33); the shaft hole (38-1) of the hinge wheel (38) arranged in the hinge wheel mounting groove A (32-3) is coaxially communicated with the pin shaft hole A (32-4), and the pin shaft (37) is arranged in the pin shaft hole A (32-4) and the shaft hole (38-1) and can fixedly connect the hinge wheel (38) and the plug pin connecting head (32); the shaft hole (38-1) of the hinged wheel (38) arranged in the hinged wheel mounting groove B (34-3) is coaxially communicated with the pin shaft hole B (34-4), and the pin shaft (37) is arranged in the pin shaft hole B (34-4) and the shaft hole (38-1) to fixedly connect the hinged wheel (38) with the pin guide head (34).
7. Screen pipe flexible plug attachment according to claim 1, characterized in that the plug support body (35) is of spherical configuration with a central bore or cylindrical configuration with a central bore.
8. A method of assembling a flexible connector pin according to claim 6, comprising:
step a1, inserting the mounting end of the plug pin connector into the mounting hole of the rotary end head in a matching manner, wherein the pin hole of the rotary end head is opposite to the annular groove of the plug pin connector, rotating the sliding pin to be inserted into the pin hole and the annular groove to axially limit the rotary end head and the plug pin connector, and the rotary end head can rotate relative to the plug pin connector;
step a2, stringing a plurality of bolt supporting bodies on a flexible rod, enabling two ends of the flexible rod to penetrate into flexible rod holes of hinge wheels, and installing locking screw pins into locking screw pin holes to lock two ends of the flexible rod in the two hinge wheels;
step a3, placing the two hinged wheels in the hinged wheel mounting groove A and the hinged wheel mounting groove B respectively, installing the pin shaft in the pin shaft hole A and the shaft hole to fix the hinged wheels in the pin joint, and installing the pin shaft in the pin shaft hole B and the shaft hole to fix the hinged wheels in the pin guide head.
9. A method of assembling a screen flexible plug device according to claim 3, wherein the screen flexible plug device is assembled in an initial state: the screen pipe male joint is not connected with the screen pipe female joint, and the flexible bolt is assembled and positioned outside the screen pipe male joint and the screen pipe female joint; the method comprises the following steps:
step b1, inserting the inserting section I of the screen pipe male joint into the inserting section II of the screen pipe female joint;
step b2, aligning the bolt guide head of the flexible bolt with the bolt inlet of the screen pipe female joint;
step b3, pushing the flexible bolt into a bolt annular hole between the screen pipe female joint and the screen pipe male joint from the bolt inlet of the screen pipe female joint;
step b4, when only the rotary end is exposed outside the screen pipe female joint, the rotary end is rotated and only the rotary end rotates at the moment, the part of the flexible bolt which is inserted into the bolt annular hole is not influenced, the rotary end is screwed into the bolt inlet of the screen pipe female joint, and after the rotary end is completely screwed in, the flexible bolt is screwed up.
10. A method for removing the screen pipe flexible plug device of claim 3, wherein the screen pipe flexible plug device is removed in an initial state: the screen pipe male joint is inserted into the screen pipe female joint, and the flexible bolt is arranged in a bolt annular hole in the screen pipe; the method comprises the following steps:
step c1, rotating the rotating end of the flexible bolt;
step c2, pulling the flexible bolt after the rotary end of the flexible bolt is completely screwed out of the bolt inlet of the screen pipe female joint;
and step c3, pulling the flexible bolt to completely take out the flexible bolt from the annular hole of the bolt, separating the male joint and the female joint of the screen pipe, and completing the disassembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210321997.5A CN114776265A (en) | 2022-03-29 | 2022-03-29 | Flexible inserting device and method for sieve tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210321997.5A CN114776265A (en) | 2022-03-29 | 2022-03-29 | Flexible inserting device and method for sieve tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114776265A true CN114776265A (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210321997.5A Pending CN114776265A (en) | 2022-03-29 | 2022-03-29 | Flexible inserting device and method for sieve tube |
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| Country | Link |
|---|---|
| CN (1) | CN114776265A (en) |
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