CN212743948U - Plug-in sealing device - Google Patents
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- CN212743948U CN212743948U CN202021973771.6U CN202021973771U CN212743948U CN 212743948 U CN212743948 U CN 212743948U CN 202021973771 U CN202021973771 U CN 202021973771U CN 212743948 U CN212743948 U CN 212743948U
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Abstract
The utility model discloses an insertion sealing device, which comprises a sealing seat and a sealing mechanism, wherein the center of the sealing seat is provided with an axial through hole, and the sealing mechanism is sleeved on the outer wall of the sealing seat; the sealing mechanism comprises an upper sealing unit, a lower sealing unit and an adjusting ring which are sleeved outside the sealing seat; the upper sealing unit and the lower sealing unit have the same structure and are symmetrically arranged; the inner wall of the adjusting ring is in threaded connection with the outer wall of the sealing seat; the adjusting ring up end and last sealing unit bottom contact, adjusting ring down end and lower sealing unit contact. The utility model discloses have the cable and pass through and well-flushing function, realize long-term sealed, safe purpose of going into and convenient use down.
Description
Technical Field
The utility model belongs to the technical field of layering sand control layering water injection technique and specifically relates to an insert sealing device.
Background
At present, the offshore oil field intelligent layering sand control layering water injection pipe column generally adopts an insertion sealing mode to realize layering, and takes ZL201520162432 'an intelligent testing and adjusting layering sand control layering water injection pipe column' and ZL201611227503.8 'an intelligent layering oil production pipe column for highly deviated wells and an operation method thereof' as examples, the offshore oil field intelligent layering sand control layering water injection pipe column has two main effects: firstly, the sealing device is matched with a sealing short section (sealing barrel) to realize the sealing of a layer position; the second is a carrier for cable to pass through. There are mainly the following problems: firstly, the sealing part adopts a rubber part to be in interference fit with the sealing cylinder, so that the sealing part is easy to wear after a well for a long time, and the sealing effect is poor; secondly, during the process of going into the well, the cable sealing joint and the cable are easily damaged through a plurality of groups of variable diameter parts in the layered sand prevention pipe column, so that short circuit is caused, and the pipe column fails; thirdly, when the cable integrally passes through the plugging device, the difficulty of field operation is high, the cable needs to be cut off, and a connector is matched, so that the risk point of the process technology is increased; fourthly, when the plugging cable hole is arranged in an offset mode, the plugging central line is not centered, and the sealing effect is reduced.
Publication (bulletin) No.: CN210217642U, publication (public notice) day: 2020-03-31 discloses a sand-prevention steam injection sealing plug, which comprises a sliding sealing insertion pipe, and further comprises an opposite buckle joint, a connecting sleeve and a sealing ring, wherein the opposite buckle joint is sequentially provided with an upper central passage and a lower central passage which are communicated from top to bottom along the central axis of the opposite buckle joint, the upper end of the lower central passage forms a ring surface, the inner diameter of the upper central passage is consistent with the outer diameter of the sliding sealing insertion pipe, the sliding sealing insertion pipe is inserted into the opposite buckle joint, the length of the sliding sealing insertion pipe is greater than that of the opposite buckle joint, an annular space is formed between the outer wall of the sliding sealing insertion pipe and the inner wall of the lower central passage of the opposite buckle joint, the connecting sleeve is sleeved in the annular. The utility model discloses satisfy sealing material and do not have the damage at well entry or sand control in-process, guaranteed that sealed is effective for a long time, avoided a large amount of steam infiltration steam injection tubular column and sleeve pipe annular space, make a large amount of heats meaningless consumption before getting into the oil reservoir, lead to annotating the poor problem of vapour effect.
Publication (bulletin) No.: CN105156061B, publication (public notice) day: 2018-04-03 relates to a downhole washable well water injection cannula sealing device, which comprises a tubular main body joint, a sheath and a lower joint, wherein the inner diameters of the sheath and the lower joint are equal, the inner diameter of the tubular main body joint is gradually changed from the lower inner diameter to the upper inner diameter, and the minimum inner diameter of the tubular main body joint is equal to the inner diameters of the sheath and the lower joint; still be equipped with the mounting hole that pierces through the pipe wall on the pipe wall of main part joint, be equipped with the check valve in this mounting hole, make the main part joint by the pipe wall outside to the inside one-way conduction of pipe wall, this kind of underground washable well water injection intubate sealing device can satisfy to divide the concentric double-barrelled intubate of well sealed sealing of dividing into of well when, can also effectively solve the sealed mechanism of dividing into of conventional concentric double-barrelled branch and lead to easy scale deposit of intubate and junk deposit because of can't carrying out the self-cleaning, the problem that final intubate sealing member became invalid, strengthen the sealing reliability of intubate sealing member, improve the concentric double-barrelled operation success rate of dividing into.
Publication (bulletin) No.: CN201857934U, publication (public notice) day: 2011-06-08 is used for sealing a special sealing cannula of a packer, is applied to an underground petroleum sealing cannula type packer and realizes the sealing of a tubing string and the packer. The lower end of the upper joint is connected with a slip seat. The outer wall of the slip seat is provided with a slip, and the lower end of the slip is arranged at the lower part of the upper joint. The outer wall of the slip seat is sleeved with a lantern ring, and the shear pin is fixed in a screw hole of the lantern ring. The lower end of the slip seat is connected with a central pipe, and a first group of sealing packing, a support ring, a second group of sealing packing and a compression ring are sequentially sleeved on the outer wall of the central pipe from top to bottom; the outer thread of the lower end of the central tube is connected with a connecting tube. The lower end of the connecting pipe is connected with a lower joint through external threads. The effect is as follows: after the setting of the intubating packer is finished, the special sealing intubation tube is put in, and the tubular column is pressed down to enable the sealing intubation tube to be inserted into the intubating packer to be matched with the intubating packer to realize the effect of sealing and isolating the annular space of the oil sleeve. The special sealing cannula has the characteristics of simple operation, effective sealing, reliable unsealing and the like.
Publication (bulletin) No.: CN211422582U, publication (public notice) day: 2020-09-04 provides a sealed cannula and a gas injection water injection string, wherein the sealed cannula comprises: the packing box comprises a first packing group, a second packing group, an upper joint, an intermediate and a lower joint which are sequentially connected; the upper joint and the lower joint are used for connecting a small oil pipe, the first packing group is sleeved on the outer wall of the upper joint, and the second packing group is sleeved on the outer wall of the intermediate. The utility model provides a sealed intubate and gas injection water injection tubular column, easy operation, sealed effective, the deblocking is reliable.
In a word, above technical scheme of the disclosure and the technical problem that will solve and the beneficial effect who produces all with the utility model discloses inequality, perhaps technical field or application are different, are directed against the utility model discloses more technical problem and the beneficial effect that will solve, above all there is not technological inspiration in the technical document of disclosing.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an insert sealing equipment to the above-mentioned defect that prior art exists, have the cable and pass through and well-flushing function, realize long-term sealed, safe purpose of going into and convenient use down.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an insertion sealing device comprises a sealing seat and a sealing mechanism, wherein an axial through hole is formed in the center of the sealing seat, and the sealing mechanism is sleeved on the outer wall of the sealing seat;
the sealing mechanism comprises an upper sealing unit, a lower sealing unit and an adjusting ring which are sleeved outside the sealing seat; the upper sealing unit and the lower sealing unit have the same structure and are symmetrically arranged;
the inner wall of the adjusting ring is in threaded connection with the outer wall of the sealing seat; the upper end surface of the adjusting ring is in contact with the bottom of the upper sealing unit, and the lower end surface of the adjusting ring is in contact with the lower sealing unit;
the upper sealing unit or the lower sealing unit comprises a concave spacing ring, a convex spacing ring, a V-shaped ring and a supporting ring; the V-shaped rings are arranged in a plurality of numbers, a part of the V-shaped rings are extruded between every two concave spacing rings and every two convex spacing rings, and the rest V-shaped rings are extruded between every two concave spacing rings and every two supporting rings.
Furthermore, the concave spacer ring is of an annular structure with two axial end faces provided with concave V-shaped grooves, and the V-shaped grooves of the concave spacer ring are in fit contact with the axial outer convex surfaces of the V-shaped ring; at least two concave isolating rings of the upper sealing unit and at least two concave isolating rings of the lower sealing unit are arranged;
the convex spacing ring is of an annular structure with two axial end faces provided with convex V-shaped heads, and the V-shaped heads of the convex spacing ring are in fit contact with the axial inner concave face of the V-shaped ring; at least one of the convex spacer ring of the upper sealing unit and the convex spacer ring of the lower sealing unit is arranged;
the support ring comprises an upper support ring and a lower support ring, the upper support ring is of an annular structure with an axially lower end surface provided with a convex V-shaped head, and the lower support ring is of an annular structure with an axially upper end surface provided with a convex V-shaped head; the upper support ring convex V-shaped head and the lower support ring convex V-shaped head are respectively in fit contact with the axial inner concave surfaces of the corresponding V-shaped rings.
Furthermore, an axial limiting ring table is arranged on the outer wall of the sealing seat, the axial limiting ring table forms axial limiting on an upper supporting ring of the upper sealing unit, and a lower supporting ring of the upper sealing unit is in contact with the upper end surface of the adjusting ring;
the outer wall of the lower port of the sealing seat is in threaded type sleeved with the lower penetrating joint, the upper end face of the lower penetrating joint props against the lower supporting ring of the lower sealing unit, and the upper supporting ring of the lower sealing unit is in contact with the lower end face of the adjusting ring.
Furthermore, the outer wall of the upper port of the sealing seat is connected with an upper penetrating joint in a threaded manner, and the sealing seat and the upper penetrating joint are simultaneously provided with corresponding axially-through cable penetrating holes.
Furthermore, the sealing seat and the upper penetrating joint are simultaneously provided with corresponding axially through well washing channels, and a check valve is installed in the well washing channel of the upper penetrating joint.
Further, the check valve comprises a sealing ball and a spring;
an inner-contracting conical ring platform is arranged on the inner wall of the upper port of the well-flushing channel of the upper crossing joint, and the minimum diameter of the inner-contracting conical ring platform is smaller than the diameter of the sealing ball;
the upper end of the spring props against the sealing ball, and the lower end of the spring props against the upper end face of the sealing seat.
Furthermore, the upper end of the sealing seat is also connected with an upper joint in a threaded manner, and the outer circumferential wall of the upper joint is provided with a cable penetrating groove which is axially communicated.
Furthermore, the lower end of the sealing seat is connected with a lower joint in a threaded manner, and the outer circumferential wall of the lower joint is provided with a cable penetrating groove which is axially communicated.
Compared with the prior art, the utility model following beneficial effect has:
1. the plug-in sealing equipment has the functions of cable penetration and well washing, and achieves the purposes of long-acting sealing, safe running-in and convenient use;
2. the V-shaped ring is arranged to form a combined sealing mechanism, so that long-acting sealing of up-pressing and down-pressing is realized, and the V-shaped ring is in a cord fabric and rubber structure, so that the wear resistance, temperature resistance and pressure resistance are improved;
3. the protection mechanism is arranged to protect the cable sealing joint and the cable body at the same time, so that the safety of running in is improved;
4. the well washing mechanism is arranged, and the design of one-end uniflow and one-end opening is adopted, so that the blockage of particles on a well washing channel during well washing can be effectively avoided; the performance of bearing upper pressure and flushing opening pressure by spring force adjusting equipment;
5. the cable mechanism is arranged, through hole design and hole alignment installation are adopted, the processing technology requirement is reduced, and the operability of integral penetration of the field cable is improved.
Drawings
Fig. 1 is a schematic structural view of an insertion sealing device according to the present invention;
fig. 2 is a sectional view a-a of fig. 1.
In the figure: 1-upper joint; 2-passing through the joint; 3, a sealing seat; 4-concave spacing ring; 5-a convex spacing ring; 6-V-shaped ring; 7-support ring; 8-an adjusting ring; 9-lower crossover joint; 10-sealing ball; 11-a spring; 12-lower joint.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1:
referring to fig. 1 to 2, the present invention provides a technical solution:
an inserting sealing device comprises a sealing seat 3 and a sealing mechanism, wherein an axial through hole is formed in the center of the sealing seat, and the sealing mechanism is sleeved on the outer wall of the sealing seat;
the sealing mechanism comprises an upper sealing unit, a lower sealing unit and an adjusting ring 8 which are sleeved outside the sealing seat; the upper sealing unit and the lower sealing unit have the same structure and are symmetrically arranged;
the inner wall of the adjusting ring is in threaded connection with the outer wall of the sealing seat; the upper end surface of the adjusting ring is in contact with the bottom of the upper sealing unit, and the lower end surface of the adjusting ring is in contact with the lower sealing unit;
the upper sealing unit or the lower sealing unit comprises a concave spacing ring 4, a convex spacing ring 5, a V-shaped ring 6 and a supporting ring 7; the number of the V-shaped rings is multiple, a part of the V-shaped rings are squeezed between every two concave spacing rings and every two convex spacing rings, for example, three lined V-shaped rings are in a group and are squeezed; the remaining V-shaped rings are pressed between every two of the concave spacing ring and the supporting ring, for example, three lined V-shaped rings are combined and pressed. The selection of combinations can be made as desired, and such split combinations will be clear to those skilled in the art.
Furthermore, the concave spacer ring is of an annular structure with two axial end faces provided with concave V-shaped grooves, and the V-shaped grooves of the concave spacer ring are in fit contact with the axial outer convex surfaces of the V-shaped ring; at least two concave isolating rings of the upper sealing unit and at least two concave isolating rings of the lower sealing unit are arranged;
the convex spacing ring is of an annular structure with two axial end faces provided with convex V-shaped heads, and the V-shaped heads of the convex spacing ring are in fit contact with the axial inner concave face of the V-shaped ring; at least one of the convex spacer ring of the upper sealing unit and the convex spacer ring of the lower sealing unit is arranged;
the support ring comprises an upper support ring and a lower support ring, the upper support ring is of an annular structure with an axially lower end surface provided with a convex V-shaped head, and the lower support ring is of an annular structure with an axially upper end surface provided with a convex V-shaped head; the upper support ring convex V-shaped head and the lower support ring convex V-shaped head are respectively in fit contact with the axial inner concave surfaces of the corresponding V-shaped rings.
Furthermore, an axial limiting ring table is arranged on the outer wall of the sealing seat, the axial limiting ring table forms axial limiting on an upper supporting ring of the upper sealing unit, and a lower supporting ring of the upper sealing unit is in contact with the upper end surface of the adjusting ring;
the outer wall of the lower port of the sealing seat is in threaded type sleeved with a lower penetrating joint 9, the upper end face of the lower penetrating joint props against a lower supporting ring of the lower sealing unit, and an upper supporting ring of the lower sealing unit is in contact with the lower end face of the adjusting ring. The lower penetrating joint 9 has various structures, and a cable penetrating hole can be formed independently, of course, the sealing seat is formed to the bottom of the penetrating hole, the lower penetrating joint 9 can be formed without the penetrating hole or the penetrating hole, and the lower penetrating joint is a pressing cap or a pressing ring to a greater extent.
Furthermore, the outer wall of the upper port of the sealing seat is connected with the upper penetrating joint 2 in a threaded manner, and the sealing seat and the upper penetrating joint are simultaneously provided with corresponding axially-through cable penetrating holes.
Furthermore, the sealing seat and the upper penetrating joint are simultaneously provided with corresponding axially through well washing channels, and a check valve is installed in the well washing channel of the upper penetrating joint.
Further, the check valve comprises a sealing ball 10 and a spring 11;
an inner-contracting conical ring platform is arranged on the inner wall of the upper port of the well-flushing channel of the upper crossing joint, and the minimum diameter of the inner-contracting conical ring platform is smaller than the diameter of the sealing ball;
the upper end of the spring props against the sealing ball, and the lower end of the spring props against the upper end face of the sealing seat.
Furthermore, the upper end of the sealing seat is also connected with an upper joint 1 in a threaded manner, and the outer circumferential wall of the upper joint is provided with a cable penetrating groove which is axially communicated.
Furthermore, the lower end of the sealing seat is connected with a lower joint 12 in a threaded manner, and the outer circumferential wall of the lower joint is provided with a cable penetrating groove which is axially communicated.
The upper joint 1 is connected with the sealing seat 3 through threads, the outer diameter of the upper joint is larger than the maximum outer diameter of the circle where the cable through hole of the upper crossing joint 2 is located, the surface of the upper joint is provided with grooves, and the central line of at least one groove and the central line of the cable through hole of the upper crossing joint 2 are in a straight line or in the same plane; the upper crossing joint 2 body is provided with a central overflowing channel, a cable passing hole and a well washing channel, wherein the cable passing hole joint adopts NPT threads, the top of the well washing channel is provided with a conical surface, a sealing ball 10 and a spring 11 are sequentially placed in the well washing channel from top to bottom and are connected with the sealing seat 3 through threads; the sealing seat 3 body is provided with a central overflowing channel, a cable passing hole and a well washing channel, the cable passing hole and the central line of the cable passing hole of the upper crossing joint 2 are in a straight line, the well washing channel is communicated with the well washing channel of the upper crossing joint 2, and the shape of the well washing channel can be circular or fan-shaped; the concave spacing ring 4, the convex spacing ring 5, the V-shaped ring 6, the support ring 7 and the like form 1 group of sealing mechanisms which are arranged on the outer surface of the sealing seat 3; the adjusting ring 8 is connected with the sealing seat 3 through threads and is arranged between the 2 groups of sealing mechanisms; the lower traversing joint 9 is connected with the sealing seat 3 through threads, and the body is provided with a central overflowing channel, a cable passing hole and a well washing channel, wherein the shape of the cable passing hole is consistent with that of the cable passing hole of the upper traversing joint 2, the central lines of the cable passing hole and the cable passing hole are a straight line, the shape of the well washing channel is consistent with that of the well washing channel of the sealing seat 3, and the central lines of the cable passing hole and the well washing channel are a straight line; the lower joint 12 is connected with the sealing seat 3 through threads, the outer diameter of the lower joint is larger than the maximum outer diameter of the circle where the cable through hole is located, grooves are arranged on the surface of the lower joint, and the center line of at least one groove and the center line of the cable through hole penetrating through the joint 9 downwards are in a straight line or in the same plane.
The utility model discloses insert sealing equipment mainly has 4 parts to constitute: sealing mechanism, cross cable mechanism, well washing mechanism and protection mechanism etc. and constitute: the sealing mechanism is mainly formed by combining high-strength V-shaped rings, and long-acting sealing of up-pressing and down-pressing is realized; the high-efficiency and long-acting sealing is realized by utilizing the radial expansion performance of the V-shaped ring under the hydraulic condition; the V-shaped ring adopts a structure of cord fabric and hydrogenated nitrile rubber, so that the temperature resistance, pressure resistance and wear resistance are improved; the cable passing mechanism is connected with the holes by adopting each part, so that the central lines of all the passing holes are always on the same straight line, the cable passing is convenient to carry out on-site, and the construction efficiency is improved; meanwhile, the conventional method that the connector is connected after the cable is cut off is avoided, and the risk points of the process technology are reduced; the well washing mechanism adopts a one-end uniflow design and an one-end opening design, so that the downward deposition of particles is facilitated while the downward pressure bearing performance is improved, and a well washing channel is not easy to block; meanwhile, the performance of bearing pressure and well washing opening pressure of the equipment can be adjusted through spring force according to actual requirements; and fourthly, a protection mechanism and protection joints are designed at two ends of the equipment, on one hand, the protection of the sealing joint after the cable passes through is realized, the collision of a reducer section on the cable in the process of descending the well is avoided, the descending safety is improved, on the other hand, the cable groove is designed for the protection joints, and the extrusion damage and the like of the cable body caused by wall adhesion when the equipment descends the well are avoided. The utility model discloses whole central line design placed in the middle has guaranteed the sealed effect after the well.
And (3) well descending: the utility model directly connects the tool string and puts in, the whole cable passes through the corresponding grooves arranged on the upper and lower joints through the cable hole;
water injection: any one group of sealing mechanism V-shaped ring combination can realize one-way or two-way effective sealing and realize effective sealing of a water injection layer; meanwhile, under the elastic force of the spring 11, the well washing channel is in a closed state;
well flushing: the incoming oil in the oil sleeve annulus pushes the sealing ball 10 to move downwards against the elasticity of the spring 11, so that a well washing channel is opened, and overflowing is realized.
Example 2:
referring to fig. 1 to 2, the present invention provides a technical solution:
an inserting sealing device comprises a sealing seat 3 and a sealing mechanism, wherein an axial through hole is formed in the center of the sealing seat, and the sealing mechanism is sleeved on the outer wall of the sealing seat;
the sealing mechanism comprises an upper sealing unit, a lower sealing unit and an adjusting ring 8 which are sleeved outside the sealing seat; the upper sealing unit and the lower sealing unit have the same structure and are symmetrically arranged;
the inner wall of the adjusting ring is in threaded connection with the outer wall of the sealing seat; the upper end surface of the adjusting ring is in contact with the bottom of the upper sealing unit, and the lower end surface of the adjusting ring is in contact with the lower sealing unit;
the upper sealing unit or the lower sealing unit comprises a concave spacing ring 4, a convex spacing ring 5, a V-shaped ring 6 and a supporting ring 7; the number of the V-shaped rings is multiple, a part of the V-shaped rings are squeezed between every two concave spacing rings and every two convex spacing rings, for example, three lined V-shaped rings are in a group and are squeezed; the remaining V-shaped rings are pressed between every two of the concave spacing ring and the supporting ring, for example, three lined V-shaped rings are combined and pressed. The selection of combinations can be made as desired, and such split combinations will be clear to those skilled in the art.
Furthermore, the concave spacer ring is of an annular structure with two axial end faces provided with concave V-shaped grooves, and the V-shaped grooves of the concave spacer ring are in fit contact with the axial outer convex surfaces of the V-shaped ring; at least two concave isolating rings of the upper sealing unit and at least two concave isolating rings of the lower sealing unit are arranged;
the convex spacing ring is of an annular structure with two axial end faces provided with convex V-shaped heads, and the V-shaped heads of the convex spacing ring are in fit contact with the axial inner concave face of the V-shaped ring; at least one of the convex spacer ring of the upper sealing unit and the convex spacer ring of the lower sealing unit is arranged;
the support ring comprises an upper support ring and a lower support ring, the upper support ring is of an annular structure with an axially lower end surface provided with a convex V-shaped head, and the lower support ring is of an annular structure with an axially upper end surface provided with a convex V-shaped head; the upper support ring convex V-shaped head and the lower support ring convex V-shaped head are respectively in fit contact with the axial inner concave surfaces of the corresponding V-shaped rings.
Furthermore, an axial limiting ring table is arranged on the outer wall of the sealing seat, the axial limiting ring table forms axial limiting on an upper supporting ring of the upper sealing unit, and a lower supporting ring of the upper sealing unit is in contact with the upper end surface of the adjusting ring;
the outer wall of the lower port of the sealing seat is in threaded type sleeved with a lower penetrating joint 9, the upper end face of the lower penetrating joint props against a lower supporting ring of the lower sealing unit, and an upper supporting ring of the lower sealing unit is in contact with the lower end face of the adjusting ring.
Example 3:
referring to fig. 1 to 2, the present invention provides a technical solution:
an inserting sealing device comprises a sealing seat 3 and a sealing mechanism, wherein an axial through hole is formed in the center of the sealing seat, and the sealing mechanism is sleeved on the outer wall of the sealing seat;
the sealing mechanism comprises an upper sealing unit, a lower sealing unit and an adjusting ring 8 which are sleeved outside the sealing seat; the upper sealing unit and the lower sealing unit have the same structure and are symmetrically arranged;
the inner wall of the adjusting ring is in threaded connection with the outer wall of the sealing seat; the upper end surface of the adjusting ring is in contact with the bottom of the upper sealing unit, and the lower end surface of the adjusting ring is in contact with the lower sealing unit;
the upper sealing unit or the lower sealing unit comprises a concave spacing ring 4, a convex spacing ring 5, a V-shaped ring 6 and a supporting ring 7; the number of the V-shaped rings is multiple, a part of the V-shaped rings are squeezed between every two concave spacing rings and every two convex spacing rings, for example, three lined V-shaped rings are in a group and are squeezed; the remaining V-shaped rings are pressed between every two of the concave spacing ring and the supporting ring, for example, three lined V-shaped rings are combined and pressed. The selection of combinations can be made as desired, and such split combinations will be clear to those skilled in the art.
Although fig. 1 to 2 are used in all the above embodiments, it is obvious to those skilled in the art that separate drawings are not shown as long as the parts or structural features missing in the embodiments are removed from the drawings. As will be clear to the skilled person. Of course, the embodiments with more components are only the preferred embodiments, and the embodiments with fewer components are the basic embodiments, but the basic objects of the present invention can also be achieved, so all of these modified embodiments are within the scope of the present invention.
All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.
In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An insertion sealing device comprises a sealing seat and a sealing mechanism, wherein an axial through hole is formed in the center of the sealing seat, and the sealing mechanism is sleeved on the outer wall of the sealing seat;
the sealing mechanism is characterized by comprising an upper sealing unit, a lower sealing unit and an adjusting ring which are sleeved outside a sealing seat; the upper sealing unit and the lower sealing unit have the same structure and are symmetrically arranged;
the inner wall of the adjusting ring is in threaded connection with the outer wall of the sealing seat; the upper end surface of the adjusting ring is in contact with the bottom of the upper sealing unit, and the lower end surface of the adjusting ring is in contact with the lower sealing unit;
the upper sealing unit or the lower sealing unit comprises a concave spacing ring, a convex spacing ring, a V-shaped ring and a supporting ring; the V-shaped rings are arranged in a plurality of numbers, a part of the V-shaped rings are extruded between every two concave spacing rings and every two convex spacing rings, and the rest V-shaped rings are extruded between every two concave spacing rings and every two supporting rings.
2. The insert sealing device according to claim 1, wherein the concave spacer ring is an annular structure with concave V-shaped grooves formed in both axial end faces, and the V-shaped grooves of the concave spacer ring are in fit contact with the outer axial convex surface of the V-shaped ring; at least two concave isolating rings of the upper sealing unit and at least two concave isolating rings of the lower sealing unit are arranged;
the convex spacing ring is of an annular structure with two axial end faces provided with convex V-shaped heads, and the V-shaped heads of the convex spacing ring are in fit contact with the axial inner concave face of the V-shaped ring; at least one of the convex spacer ring of the upper sealing unit and the convex spacer ring of the lower sealing unit is arranged;
the support ring comprises an upper support ring and a lower support ring, the upper support ring is of an annular structure with an axially lower end surface provided with a convex V-shaped head, and the lower support ring is of an annular structure with an axially upper end surface provided with a convex V-shaped head; the upper support ring convex V-shaped head and the lower support ring convex V-shaped head are respectively in fit contact with the axial inner concave surfaces of the corresponding V-shaped rings.
3. The insertion sealing device as claimed in claim 2, wherein the outer wall of the sealing seat is provided with an axial limiting ring table, the axial limiting ring table axially limits the upper supporting ring of the upper sealing unit, and the lower supporting ring of the upper sealing unit is in contact with the upper end surface of the adjusting ring;
the outer wall of the lower port of the sealing seat is in threaded type sleeved with the lower penetrating joint, the upper end face of the lower penetrating joint props against the lower supporting ring of the lower sealing unit, and the upper supporting ring of the lower sealing unit is in contact with the lower end face of the adjusting ring.
4. An insertion sealing device according to claim 1, 2 or 3, wherein the outer wall of the upper port of the sealing seat is connected with a threaded upper penetrating joint, and the sealing seat and the upper penetrating joint are simultaneously provided with corresponding axial through cable penetrating holes.
5. The apparatus of claim 4, wherein the seal housing and the upper crossover sub simultaneously define corresponding axially through-going well-flushing passageways, and wherein a check valve is mounted in the well-flushing passageway of the upper crossover sub.
6. An insertion sealing device as claimed in claim 5, wherein said check valve comprises a sealing ball, a spring;
an inner-contracting conical ring platform is arranged on the inner wall of the upper port of the well-flushing channel of the upper crossing joint, and the minimum diameter of the inner-contracting conical ring platform is smaller than the diameter of the sealing ball;
the upper end of the spring props against the sealing ball, and the lower end of the spring props against the upper end face of the sealing seat.
7. An insertion sealing device according to claim 1, 2, 3, 5 or 6, wherein the upper end of the sealing seat is also screwed with the upper connector, and the outer circumferential wall of the upper connector is provided with a cable passing groove which axially penetrates.
8. An insertion sealing device according to claim 1, 2, 3, 5 or 6, wherein the lower end of the sealing seat is also connected with a lower connector in a threaded manner, and the outer circumferential wall of the lower connector is provided with a cable passing groove which axially penetrates through the lower connector.
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|---|---|---|---|
| CN202021973771.6U CN212743948U (en) | 2020-09-10 | 2020-09-10 | Plug-in sealing device |
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| CN202021973771.6U CN212743948U (en) | 2020-09-10 | 2020-09-10 | Plug-in sealing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165187A (en) * | 2020-09-10 | 2022-03-11 | 中国石油化工股份有限公司 | A kind of inserting sealing device and using method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165187A (en) * | 2020-09-10 | 2022-03-11 | 中国石油化工股份有限公司 | A kind of inserting sealing device and using method |
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