CN115875456B - Self-expansion anti-seepage high-pressure sealing element for petroleum exploitation pipe - Google Patents
Self-expansion anti-seepage high-pressure sealing element for petroleum exploitation pipe Download PDFInfo
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- CN115875456B CN115875456B CN202310155995.8A CN202310155995A CN115875456B CN 115875456 B CN115875456 B CN 115875456B CN 202310155995 A CN202310155995 A CN 202310155995A CN 115875456 B CN115875456 B CN 115875456B
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Abstract
The invention discloses a self-expansion anti-seepage high-pressure sealing piece for an oil exploitation pipe, which belongs to the field of oil exploitation pipes and comprises a sealing ring body, wherein two sealing contact edges which are in contact and airtight with the wall of the oil exploitation pipe are symmetrically arranged on the outer side of the circumference of the sealing ring body, two strong magnetic rings are symmetrically arranged in the sealing ring body, high-pressure cavities are respectively arranged on the opposite sides of the two strong magnetic rings, an adsorption cavity is arranged between the two sealing contact edges of the sealing ring body, an adsorption expansion layer is filled in the adsorption cavity, storage bins are symmetrically arranged on the two sides of the adsorption cavity, an emulsifying agent is filled in the storage bins, an extrusion sealing port is arranged on one side, close to the wall of the oil exploitation pipe, of the adsorption cavity, an oil penetration film is arranged on the other side, and a three-way pipeline is arranged on the other side of the adsorption cavity.
Description
Technical Field
The invention relates to the field of oil exploitation pipes, in particular to a self-expansion anti-seepage high-pressure sealing piece for an oil exploitation pipe.
Background
The special equipment for petroleum drilling and production mainly has four faults of damage, ageing, loosening, maladjustment and performance failure caused by blockage and leakage in the fault problem of the mining equipment, wherein the four faults are respectively represented by cracking, pulling deformation, cracking, indentation and the like of parts, the ageing problem is mainly represented by the phenomena of deterioration, ageing, abrasion, peeling and the like of materials, and the fault in loosening is mainly represented by the falling and loosening of parts.
Because petroleum has certain corrosion effect, can accelerate the ageing of the sealing member in the special equipment of petroleum drilling and production, the performance failure that the jam seepage caused appears easily, in case such trouble appears, light then equipment trouble is stopped operating, heavy then the security of living and property appears, therefore the security problem of high pressure sealing member is considerable, strengthen the material of sealing member in prior art, for example strengthen the oil resistance of rubber spare, but along with the lapse of live time, the performance of sealing member can unavoidably show the decline of different degree, technical staff generally through shortening the maintenance cycle, periodic maintenance and change just can effectively avoid this problem, however this kind of reinforcement means is too passive, and the cost is comparatively high, need consume huge manpower and materials, for this reason we propose a self-expanding prevention of seepage high pressure sealing member for the oil exploitation to solve above problem.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems existing in the prior art, the invention aims to provide a self-expansion anti-seepage high-pressure sealing element for an oil exploitation pipe, which can realize the purpose of sealing the oil exploitation pipe and the connecting element by mutually matching a sealing ring body with a sealing contact edge, a rigid arm and a rotating convex edge with a strong magnetic ring with a bowl-shaped elastic plate, a rotating seat, a gathering groove, a V-shaped deformation groove, a high-pressure cavity, an adsorption cavity and a storage bin, wherein the sealing ring body is sleeved on the connecting element and is arranged on the inner wall of the pipe wall of the oil exploitation pipe in actual use, the end parts of the bowl-shaped elastic plates at the two sides are close to each other, the contact supporting force is provided for the sealing contact edge, when the sealing contact edge and the oil exploitation pipe are in aging leakage, the leaked oil enters a W-shaped cavity through an oil permeation film, the adsorption expansion layer is used for adsorbing the oil permeation film, when the permeation quantity is overlarge, the adsorption expansion layer is used for adsorbing the oil permeation film, simultaneously expanding and pushing one side of the oil permeation film to move outwards, so that on one hand, the inner volume of the W-shaped cavity is reduced, and then the oil in the W-shaped cavity is reversely discharged from an oil leakage point, on the other hand, the bending node of the storage bin is restored, the extrusion sealing opening is opened, part of emulsifying agent flows out to be in contact with the oil for emulsification, the damage of the oil to the sealing ring body is reduced, meanwhile, the oil adsorbed by the adsorption expansion layer in an overload way can be separated out and is in contact with low-oil corrosion resistant materials in a three-way pipeline, the low-oil corrosion resistant materials are gradually corroded and dissolved, the opening of the three-way pipeline is kept, at the moment, the gas in the high-pressure cavity is released, on the one hand, the gas enters the storage bin, the rest emulsifying agent is completely discharged by utilizing the air pressure, and the purpose of thorough emulsification is achieved, on the other hand, along with the discharge of gas, the supporting force of the high-pressure cavity to the strong magnetic ring is weakened gradually, the two strong magnetic rings are gradually close by utilizing the adsorption force, in the process, the strong magnetic rings pull the rotating seat to displace, the bowl-shaped elastic plate takes the contact point against the rotating convex edge as the rotating point to perform overturning action, the extrusion force of the bowl-shaped elastic plate to the sealing contact edge is enhanced gradually in the overturning process, the purpose of plugging leakage points is achieved, when the two strong magnetic rings reach the minimum distance through the displacement of magnetic attraction, the deformation of the bowl-shaped elastic plate is maximum and the bowl-shaped elastic plate is reversely overturned, the sealing contact edge is separated from contact with one side of the petroleum exploitation pipe wall, and the other side of the sealing contact edge which is not contacted with the petroleum exploitation pipe wall is contacted again, so that the purpose of replacing an ageing contact surface is achieved.
2. Technical proposal
In order to solve the problems, the invention adopts the following technical scheme.
The self-expansion anti-seepage high-pressure sealing piece for the oil exploitation pipe comprises a sealing ring body, two sealing contact edges which are in contact with the wall of the oil exploitation pipe and airtight are symmetrically arranged on the outer side of the circumference of the sealing ring body, two strong magnetic rings are symmetrically arranged in the sealing ring body, a high-pressure cavity is formed in one side, opposite to the two strong magnetic rings, of the sealing ring body, an adsorption cavity is formed between the two sealing contact edges, an adsorption expansion layer is filled in the adsorption cavity, storage bins are symmetrically arranged on two sides of the adsorption cavity, an emulsifying agent is filled in the storage bins, an extrusion sealing port is formed in one side, close to the wall of the oil exploitation pipe, of the storage bins, an oil-permeable film is arranged on one side, close to the wall of the oil exploitation pipe, of the adsorption cavity, a three-way pipeline is arranged on the other side, the three-way pipeline is communicated with the storage bins, the high-pressure cavity and the adsorption cavity, and the three-way pipeline is filled with a low-oil corrosion resistant material, and the low-oil corrosion resistant material seals the three-way pipeline;
the side of strong magnetic ring is connected with a plurality of bowl form elastic plates that the equidistance was arranged through bearing structure, the circumference outside and the sealed contact limit fixed connection of bowl form elastic plate, the circumference inboard of bowl form elastic plate is equipped with a plurality of swivel bases that equi-angle equipartition was arranged, the swivel base is used for rotating with the bearing of strong magnetic ring and is connected, one side of swivel base is equipped with gathers together the groove, the opposite side of swivel base is equipped with V type deformation groove, this internal rigid arm of force that is fixed with of sealing washer, the top of rigid arm of force is fixed with rotatory protruding edge, rotatory protruding edge is inconsistent with one side of bowl form elastic plate.
The invention is characterized in that the sealing ring body with a sealing contact edge, a rigid arm and a rotary protruding edge is matched with the strong magnetic ring with a bowl-shaped elastic plate, a rotary seat, a gathering groove and a V-shaped deformation groove, a high-pressure cavity, an adsorption cavity and a storage bin, when in actual use, the sealing ring body is sleeved on a connecting piece and is arranged on the inner wall of the wall of an oil exploitation pipe, at the moment, the end parts of the bowl-shaped elastic plates at the two sides are close to each other to provide a contact supporting force for the sealing contact edge, thereby achieving the purpose of sealing the oil exploitation pipe and the connecting piece, when the sealing contact edge and the oil exploitation pipe have aging leakage, leaked petroleum enters a W-shaped cavity through an oil permeation film, and is adsorbed by an adsorption expansion layer, when the permeation quantity is overlarge, the expansion quantity of the adsorption expansion layer is increased, and the adsorption expansion layer adsorbs the oil permeation, the expansion pushes one side of the oil-permeable film to move outwards, so that on one hand, the inner volume of the W-shaped cavity is reduced, and then the oil in the W-shaped cavity is reversely discharged from an oil leakage point, on the other hand, the bending node of the storage bin is restored, the extrusion sealing port is opened, part of emulsifying agent flows out to be in contact with the oil for emulsification, the damage of the oil to the sealing ring body is reduced, meanwhile, the oil adsorbed by the overload of the adsorption expansion layer can be separated out and is in contact with the low-oil corrosion resistant material in the three-way pipeline, the low-oil corrosion resistant material is gradually corroded and dissolved, the opening of the three-way pipeline is kept, at the moment, the gas in the high-pressure cavity is released, on the one hand, the gas enters the storage bin, the residual emulsifying agent is completely discharged by the gas pressure, the purpose of thoroughly emulsification is achieved, on the other hand, along with the discharge of the gas, the supporting force of the high-pressure cavity to the strong magnetic rings is gradually weakened, the two strong magnetic rings are gradually close by the adsorption force, in the process, the strong magnetic rings pull the rotating seat to displace, so that the bowl-shaped elastic plates turn over by taking the contact point against the rotating convex edge as the rotating point, the extrusion force of the bowl-shaped elastic plates to the sealing contact edge is gradually enhanced in the turning over process, the purpose of plugging leakage points is achieved, when the displacement of the two strong magnetic rings reaches the minimum distance through magnetic attraction, the deformation of the bowl-shaped elastic plates is maximum and the bowl-shaped elastic plates reversely turn over, one side of the sealing contact edge, which is contacted with the wall of the petroleum exploitation pipe, is separated from the contact, and the other side of the sealing contact edge, which is not contacted with the wall of the petroleum exploitation pipe, is contacted again, so that the purpose of replacing an aging contact surface is achieved.
Further, the emulsifier is a calcium dodecyl benzene sulfonate emulsifier.
Further, the low-oil-corrosion-resistance material is of a rubber structure with low oil resistance, the low-oil-corrosion-resistance material is fixed in the three-way pipeline through hot melting and plugs the three-way pipeline, and the oil resistance of the sealing ring body and the sealing contact edge is larger than that of the low-oil-corrosion-resistance material.
Further, a W-shaped cavity is formed between the oil permeable film and the side wall of the storage bin and the wall of the petroleum exploitation pipe, the side wall of the storage bin is extruded by bowl-shaped elastic plates at two sides to form a bent shape, the extrusion sealing opening is arranged at a bent node of the side wall of the storage bin, the extrusion sealing opening is of a V-shaped opening structure, and the extrusion sealing opening is in a involution sealing shape under extrusion.
Through the design of the extrusion sealing port of V type opening structure, under the initial sealing state of sealing washer body, the lateral wall of storage storehouse forms the W type form with the oil film that permeates under bowl form elastic force of elastic plate, at this in-process, extrusion sealing port receives the lateral wall deformation extrusion of storage storehouse, forms sealed form, can effectively prevent the emulsifier of storage storehouse storage to leak.
Further, the adsorption expansion layer is an adsorption layer formed by stacking and arranging kapok fibers, the kapok fibers are prepared by adopting a dipping method by taking poly-n-butyl methacrylate and polystyrene as modifiers, the adsorption expansion layer is in a circular ring shape, and the length direction of the kapok fibers is axially parallel to the adsorption expansion layer.
Through the setting of the adsorption expansion layer with the kapok fiber and the arrangement direction of the kapok fiber, on one hand, the kapok fiber is a highly lignified organic seed fiber, and because of the hollow inner cavity and the surface wax of the kapok fiber, the kapok fiber has the characteristics of hydrophobicity and oleophilicity, can adsorb a large amount of petroleum, and meanwhile, the expansion direction of the arranged kapok fiber is carried out along the expansion direction of the corrugated expansion wall, so that the side wall displacement deformation of the storage bin is driven to achieve the action of opening the extrusion sealing opening, and the operation can be accurately and effectively carried out.
Furthermore, the side walls at two sides of the adsorption cavity are provided with wave-shaped telescopic walls.
Further, the elasticity of the rotating seat is larger than that of the bowl-shaped elastic plate.
Further, a magnetic attraction force is arranged between the two strong magnetic rings, and the magnetic attraction force between the two strong magnetic rings is larger than the elastic deformation critical force of the rotating seat.
Furthermore, the high-pressure cavity is filled with high-pressure gas, and the gas pressure value of the high-pressure gas is larger than that of the magnetic attraction force between the two strong magnetic rings.
Through the structural design of the high-pressure cavity filled with high-pressure gas, the strong magnetic ring can keep stable relative distance by utilizing the air pressure of the high-pressure cavity and the limitation of the wall of the petroleum exploitation pipe after being installed, so that the two bowl-shaped elastic plates keep opposite shape, further, the supporting force provided by the bowl-shaped elastic plates on the side wall of the bowl-shaped elastic plates along the sealing contact edge is effectively maintained, and the initial sealing state of the sealing ring body reaches a stable and effective state.
Furthermore, the filling gas in the high-pressure cavity is inert protective gas.
Through the setting of the high-pressure cavity filled with inert protective gas, after the low-oil corrosion resistant material in the three-way pipeline is corroded by permeated oil, the inert protective gas can enter the storage bin and the W-shaped cavity through the three-way pipeline, and the W-shaped cavity is filled while the oil in the W-shaped cavity is discharged by utilizing air pressure, so that the oil corrosion rate of the sealing ring body is reduced, and the service life and corrosion resistance of the sealing ring body are further improved.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) According to the scheme, through the mutual matching of the sealing ring body with the sealing contact edge, the rigid arm and the rotary protruding edge, the strong magnetic ring with the bowl-shaped elastic plate, the rotary seat, the gathering groove and the V-shaped deformation groove, the high-pressure air cavity, the adsorption cavity and the storage bin, during actual use, the sealing ring body is sleeved on the connecting piece and is arranged on the inner wall of the oil exploitation pipe, at the moment, the end parts of the bowl-shaped elastic plates at the two sides are close to each other, the contact supporting force is provided for the sealing contact edge, the purpose of sealing between the oil exploitation pipe and the connecting piece is achieved, when the sealing contact edge and the oil exploitation pipe are in an ageing leakage phenomenon, leaked petroleum enters a W-shaped cavity, the leaked petroleum enters the adsorption cavity through an adsorption expansion layer and is adsorbed by the adsorption expansion layer, when the permeation quantity is overlarge, the expansion quantity of the adsorption expansion layer is increased, the adsorption expansion layer is adsorbed, and pushes one side of the oil permeation film to move outwards, so that the volume in the W-shaped cavity is reduced, the petroleum in the W-shaped cavity is reversely discharged from the oil leakage point, on the other hand, the bending joint of the storage bin is restored, the sealing contact opening is made, the sealing ring and the three-shaped cavity is gradually opened, the sealing ring is gradually contacted with the high pressure contact opening part, the three-shaped expansion layer is completely, the high pressure resistance is completely is reached, the purpose is realized, the residual corrosion resistance is realized, the high corrosion resistance is realized, the three-pressure resistance is gradually is realized, and the material is gradually is completely, and the air-released, and the material is gradually is completely and the air contacted with the pressure sealing material is completely, and the sealing material is completely and the high pressure and is completely and the air filled, in the process, the strong magnetic rings pull the rotating seat to displace, so that the bowl-shaped elastic plates turn over by taking the contact point against the rotating convex edge as the rotating point, the extrusion force of the bowl-shaped elastic plates to the sealing contact edge is gradually enhanced in the turning over process, the purpose of plugging leakage points is achieved, when the displacement of the two strong magnetic rings reaches the minimum distance through magnetic attraction, the deformation of the bowl-shaped elastic plates is maximum and the bowl-shaped elastic plates reversely turn over, one side of the sealing contact edge, which is contacted with the wall of the petroleum exploitation pipe, is separated from the contact, and the other side of the sealing contact edge, which is not contacted with the wall of the petroleum exploitation pipe, is contacted again, so that the purpose of replacing an aging contact surface is achieved.
(2) Through the design of the extrusion sealing port of V type opening structure, under the initial sealing state of sealing washer body, the lateral wall of storage storehouse forms the W type form with the oil film that permeates under bowl form elastic force of elastic plate, at this in-process, extrusion sealing port receives the lateral wall deformation extrusion of storage storehouse, forms sealed form, can effectively prevent the emulsifier of storage storehouse storage to leak.
(3) Through the setting of the adsorption expansion layer with the kapok fiber and the arrangement direction of the kapok fiber, on one hand, the kapok fiber is a highly lignified organic seed fiber, and because of the hollow inner cavity and the surface wax of the kapok fiber, the kapok fiber has the characteristics of hydrophobicity and oleophilicity, can adsorb a large amount of petroleum, and meanwhile, the expansion direction of the arranged kapok fiber is carried out along the expansion direction of the corrugated expansion wall, so that the side wall displacement deformation of the storage bin is driven to achieve the action of opening the extrusion sealing opening, and the operation can be accurately and effectively carried out.
(4) Through the structural design of the high-pressure cavity filled with high-pressure gas, the strong magnetic ring can keep stable relative distance by utilizing the air pressure of the high-pressure cavity and the limitation of the wall of the petroleum exploitation pipe after being installed, so that the two bowl-shaped elastic plates keep opposite shape, further, the supporting force provided by the bowl-shaped elastic plates on the side wall of the bowl-shaped elastic plates along the sealing contact edge is effectively maintained, and the initial sealing state of the sealing ring body reaches a stable and effective state.
(5) Through the setting of the high-pressure cavity filled with inert protective gas, after the low-oil corrosion resistant material in the three-way pipeline is corroded by permeated oil, the inert protective gas can enter the storage bin and the W-shaped cavity through the three-way pipeline, and the W-shaped cavity is filled while the oil in the W-shaped cavity is discharged by utilizing air pressure, so that the oil corrosion rate of the sealing ring body is reduced, and the service life and corrosion resistance of the sealing ring body are further improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is an enlarged schematic view of the portion A in FIG. 2;
FIG. 4 is a schematic diagram of an exploded construction of the present invention;
FIG. 5 is a schematic diagram of an exploded structure of the ferromagnetic ring and the bowl-shaped elastic plate according to the present invention;
FIG. 6 is a schematic view of a bowl-shaped spring plate structure according to the present invention;
FIG. 7 is a schematic view of an extrusion sealing port according to the present invention;
FIG. 8 is a schematic view of the structure of the sealing contact edge according to the present invention;
fig. 9 is a schematic structural diagram of the ferromagnetic ring according to the present invention when the ferromagnetic rings are close to each other.
The reference numerals in the figures illustrate:
the sealing ring comprises a sealing ring body 1, a rigid force arm 11, a rotary flange 12, a sealing contact edge 2, a strong magnetic ring 3, a bowl-shaped elastic plate 31, a rotating seat 311, a gathering groove 32, a V-shaped deformation groove 33, a high-pressure air cavity 4, an adsorption cavity 5, an adsorption expansion layer 51, an oil permeable membrane 52, a wave-shaped telescopic wall 53, a three-way pipeline 6, a storage bin 7 and an extrusion sealing opening 71.
Description of the embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1:
referring to fig. 1-9, a self-expansion anti-seepage high-pressure sealing piece for an oil exploitation pipe comprises a sealing ring body 1, two sealing contact edges 2 which are in contact with and airtight with the wall of the oil exploitation pipe are symmetrically arranged on the outer side of the circumference of the sealing ring body 1, two strong magnetic rings 3 are symmetrically arranged in the sealing ring body 1, a high-pressure cavity 4 is arranged on one side opposite to the two strong magnetic rings 3, an adsorption cavity 5 is arranged between the two sealing contact edges 2 of the sealing ring body 1, an adsorption expansion layer 51 is filled in the adsorption cavity 5, storage bins 7 are symmetrically arranged on two sides of the adsorption cavity 5, an emulsifying agent is filled in the storage bins 7, an extrusion sealing port 71 is arranged on one side, close to the wall of the oil exploitation pipe, of the adsorption cavity 5 is provided with an oil-permeable membrane 52, a three-way pipeline 6 is arranged on the other side, the three-way pipeline 6 is communicated with the storage bins 7, the high-pressure cavity 4 and the adsorption cavity 5, a low-pressure corrosion resistant material is filled in the three-way pipeline 6, and the low-pressure corrosion resistant material is used for sealing the three-way pipeline 6;
the side of strong magnetic ring 3 is connected with a plurality of equidistant bowl form elastic plates 31 of arranging through bearing structure, the circumference outside and the sealed contact limit 2 fixed connection of bowl form elastic plate 31, the circumference inboard of bowl form elastic plate 31 is equipped with a plurality of swivel mounts 311 that equi-angle equipartition was arranged, swivel mount 311 is used for rotating with the bearing of strong magnetic ring 3 and is connected, one side of swivel mount 311 is equipped with gathers together groove 32, the opposite side of swivel mount 311 is equipped with V type deformation groove 33, sealing washer body 1 internal fixation has rigid arm of force 11, the top of rigid arm of force 11 is fixed with rotatory protruding edge 12, rotatory protruding edge 12 is inconsistent with one side of bowl form elastic plate 31.
The invention is through the mutual cooperation between the sealing ring body 1 with the sealing contact edge 2, the rigid arm 11 and the rotary protruding edge 12, the strong magnetic ring 3 with the bowl-shaped elastic plate 31, the rotary seat 311, the gathering groove 32 and the V-shaped deformation groove 33, the high pressure air cavity 4, the adsorption cavity 5 and the storage bin 7, when in actual use, the sealing ring body 1 is sleeved on a connecting piece and is arranged on the inner wall of the wall of an oil exploitation pipe, at the moment, the end parts of the bowl-shaped elastic plates 31 at the two sides are close to each other to provide contact supporting force for the sealing contact edge 2, thereby achieving the purpose of sealing the oil exploitation pipe and the connecting piece, when the contact point of the sealing contact edge 2 and the oil exploitation pipe is aged and leaked, leaked oil enters a W-shaped cavity, permeated oil enters the adsorption cavity 5 through the oil permeation film 52 and is adsorbed by the adsorption expansion layer 51, when the permeation quantity is overlarge, the expansion amount of the adsorption expansion layer 51 is increased, the adsorption expansion layer 51 adsorbs oil seepage, and simultaneously, the expansion pushes one side of the oil-permeable film 52 to move outwards, so that on one hand, the inner volume of the W-shaped cavity is reduced, and then the oil in the W-shaped cavity is reversely discharged from an oil leakage point, on the other hand, the bending node of the storage bin 7 is restored, the extrusion sealing opening 71 is opened, part of emulsifying agent flows out to be in contact with the oil for emulsification, the damage of the oil to the sealing ring body 1 is reduced, meanwhile, the oil adsorbed by the adsorption expansion layer 51 in an overload way is separated out and is in contact with the low-oil corrosion resistant material in the three-way pipeline 6, the low-oil corrosion resistant material is gradually corroded and dissolved, the opening of the three-way pipeline 6 is kept, at the moment, the gas in the high-pressure cavity 4 is released, on the one hand, the gas enters the storage bin 7, the rest emulsifying agent is completely discharged by the air pressure, the purpose of thorough emulsification is achieved, on the other hand, along with the discharging of the gas, the high-pressure cavity 4 gradually weakens the supporting force of the strong magnetic rings 3, the two strong magnetic rings 3 gradually approach by using the adsorption force, in the process, the strong magnetic rings 3 pull the rotating seat 311 to displace, so that the bowl-shaped elastic plate 31 overturns by taking the contact point against the rotating convex edge 12 as a rotating point, the extrusion force of the bowl-shaped elastic plate 31 on the sealing contact edge 2 is gradually enhanced in the overturning process, the purpose of plugging leakage points is achieved, when the two strong magnetic rings 3 reach the minimum distance through the displacement of magnetic attraction, the deformation of the bowl-shaped elastic plate 31 is maximum and reversely overturned, the sealing contact edge 2 is separated from contact with one side contacted with the petroleum exploitation pipe wall, and the other side which is not contacted with the petroleum exploitation pipe wall is contacted again, so that the purpose of replacing an ageing contact surface is achieved.
The emulsifier is calcium dodecyl benzene sulfonate emulsifier, the low-oil-corrosion-resistance material is of a rubber structure with low oil resistance, the low-oil-corrosion-resistance material is fixed in the three-way pipeline 6 through hot melting and seals the three-way pipeline 6, and the oil resistance of the sealing ring body 1 and the sealing contact edge 2 is greater than that of the low-oil-corrosion-resistance material.
The oil-permeable film 52 forms a W-shaped cavity with the side wall of the storage bin 7 and the wall of the petroleum exploitation pipe, the side wall of the storage bin 7 is extruded by bowl-shaped elastic plates 31 at two sides to form a bent shape, an extrusion sealing opening 71 is arranged at a bent node of the side wall of the storage bin 7, the extrusion sealing opening 71 is of a V-shaped opening structure, and the extrusion sealing opening 71 is of a involution sealing shape under extrusion.
Through the design of the extrusion sealing opening 71 of the V-shaped opening structure, under the initial sealing state of the sealing ring body 1, the side wall of the storage bin 7 forms a W shape with the oil permeable membrane 52 under the elastic tension of the bowl-shaped elastic plate 31, and in the process, the extrusion sealing opening 71 is extruded by the deformation of the side wall of the storage bin 7 to form a sealing shape, so that the leakage of the emulsifier stored in the storage bin 7 can be effectively prevented.
The adsorption expansion layer 51 is an adsorption layer formed by stacking and arranging kapok fibers, the kapok fibers are prepared by adopting a dipping method by taking poly-n-butyl methacrylate and polystyrene as modifiers, the adsorption expansion layer 51 is annular, the length direction of the kapok fibers is axially parallel to the adsorption expansion layer 51, and the side walls on two sides of the adsorption cavity 5 are respectively provided with a wave-shaped telescopic wall 53.
Through the arrangement of the adsorption expansion layer 51 with kapok fibers and the arrangement direction of the kapok fibers, on one hand, the kapok fibers are highly lignified organic seed fibers, and because of the hollow inner cavity and surface wax, the kapok fibers have the characteristics of water repellency and oleophilic property, can adsorb a large amount of petroleum, and meanwhile, the expansion direction of the arranged kapok fibers is carried out along the expansion direction of the corrugated expansion wall 53, so that the movement of driving the side wall displacement deformation of the storage bin 7 to open the extrusion sealing port 71 can be accurately and effectively carried out.
The elasticity of the rotating seat 311 is greater than the elasticity of the bowl-shaped elastic plate 31, a magnetic attraction force is arranged between the two strong magnetic rings 3, the magnetic attraction force between the two strong magnetic rings 3 is greater than the elastic deformation critical force of the rotating seat 311, high-pressure air is filled in the high-pressure air cavity 4, and the air pressure value of the high-pressure air is greater than the magnetic attraction force between the two strong magnetic rings 3.
Through the structural design of the high-pressure air cavity 4 filled with high-pressure air, the strong magnetic ring 3 can keep stable relative distance by utilizing the air pressure of the high-pressure air cavity 4 and the limitation of the wall of the petroleum exploitation pipe after being installed, so that the two bowl-shaped elastic plates 31 keep opposite, further, the supporting force of the bowl-shaped elastic plates 31 on the sealing contact edge 2 provided along the side wall of the bowl-shaped elastic plates 31 is effectively maintained, and the initial sealing state of the sealing ring body 1 is stable and effective.
The high-pressure air cavity 4 is filled with inert protective gas, and after the low-oil corrosion-resistant material in the three-way pipeline 6 is corroded by permeated oil through the arrangement of the high-pressure air cavity 4 filled with the inert protective gas, the inert protective gas can enter the storage bin 7 and the W-shaped cavity through the three-way pipeline 6, and the W-shaped cavity is filled while the oil in the W-shaped cavity is discharged by utilizing air pressure, so that the oil corrosion rate of the sealing ring body 1 is reduced, and the service life and corrosion resistance of the sealing ring body are further prolonged.
The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.
Claims (9)
1. The utility model provides a self-expansion prevention of seepage high pressure sealing member for oil exploitation pipe, includes sealing washer body (1), the circumference outside symmetry of sealing washer body (1) is equipped with two and oil exploitation pipe wall contact airtight sealed contact limit (2), its characterized in that: two strong magnetic rings (3) are symmetrically arranged in the sealing ring body (1), high-pressure cavities (4) are respectively arranged on one side, which is opposite to the two strong magnetic rings (3), of the sealing ring body (1), an adsorption cavity (5) is arranged between the two sealing contact edges (2), an adsorption expansion layer (51) is filled in the adsorption cavity (5), storage bins (7) are symmetrically arranged on two sides of the adsorption cavity (5), an emulsifying agent is filled in the storage bins (7), an extrusion sealing port (71) is arranged on one side, which is close to the wall of an oil exploitation pipe, of the storage bins (7), an oil-permeable film (52) is arranged on one side, which is close to the wall of the oil exploitation pipe, of the adsorption cavity (5), a three-way pipeline (6) is arranged on the other side, the three-way pipeline (6) is communicated with the storage bins (7), the high-pressure cavities (4) and the adsorption cavity (5), and the three-way pipeline (6) are filled with low-oil corrosion resistant materials, and the low-oil corrosion resistant materials block the three-way pipeline (6) to enable the three-way pipeline (6) to be sealed;
the side of Jiang Cihuan (3) is connected with a plurality of bowl-shaped elastic plates (31) which are distributed at equal intervals through a bearing structure, the outer side of the circumference of the bowl-shaped elastic plates (31) is fixedly connected with a sealing contact edge (2), a plurality of rotating bases (311) which are distributed at equal angles and equal intervals are arranged on the inner side of the circumference of the bowl-shaped elastic plates (31), the rotating bases (311) are used for being rotationally connected with bearings of the strong magnetic rings (3), gathering grooves (32) are formed in one side of the rotating bases (311), V-shaped deformation grooves (33) are formed in the other side of the rotating bases (311), a rigid force arm (11) is fixed in the sealing ring body (1), and a rotating protruding edge (12) is fixed at the top of the rigid force arm (11) and is abutted to one side of the bowl-shaped elastic plates (31);
the oil-permeable membrane (52) forms a W-shaped cavity with the side wall of the storage bin (7) and the wall of the petroleum exploitation pipe, the side wall of the storage bin (7) is extruded by bowl-shaped elastic plates (31) at two sides to form a bent shape, the extrusion sealing opening (71) is arranged at a bent node of the side wall of the storage bin (7), the extrusion sealing opening (71) is of a V-shaped opening structure, and the extrusion sealing opening (71) is of a involution sealing shape under extrusion.
2. A self-expanding impermeable high pressure seal for petroleum production tubing as defined in claim 1 wherein: the emulsifier is calcium dodecyl benzene sulfonate emulsifier.
3. A self-expanding impermeable high pressure seal for petroleum production tubing as defined in claim 1 wherein: the low-oil-corrosion-resistance material is of a rubber structure with low oil resistance, the low-oil-corrosion-resistance material is fixed in the three-way pipeline (6) through hot melting and plugs the three-way pipeline (6), and the oil resistance of the sealing ring body (1) and the sealing contact edge (2) is greater than that of the low-oil-corrosion-resistance material.
4. A self-expanding impermeable high pressure seal for petroleum production tubing as defined in claim 1 wherein: the absorbent expansion layer (51) is an absorbent layer formed by stacking and arranging kapok fibers, the kapok fibers are prepared by adopting a dipping method by taking poly-n-butyl methacrylate and polystyrene as modifiers, the absorbent expansion layer (51) is in a circular ring shape, and the length direction of the kapok fibers is axially parallel to the absorbent expansion layer (51).
5. A self-expanding impermeable high pressure seal for petroleum production tubing as defined in claim 1 wherein: the side walls of the two sides of the adsorption cavity (5) are provided with wave-shaped telescopic walls (53).
6. A self-expanding impermeable high pressure seal for petroleum production tubing as defined in claim 1 wherein: the elasticity of the rotating seat (311) is larger than that of the bowl-shaped elastic plate (31).
7. A self-expanding impermeable high pressure seal for petroleum production tubing as defined in claim 6 wherein: a magnetic attraction force is arranged between the two Jiang Cihuan (3), and the magnetic attraction force between the two Jiang Cihuan (3) is larger than the elastic deformation critical force of the rotating seat (311).
8. A self-expanding impermeable high pressure seal for petroleum production tubing as defined in claim 6 wherein: the high-pressure cavity (4) is filled with high-pressure gas, and the gas pressure value of the high-pressure gas is larger than that of the magnetic attraction between the two Jiang Cihuan (3).
9. A self-expanding, impermeable, high pressure seal for oil production tubing as defined in claim 8, wherein: the high-pressure cavity (4) is filled with inert protective gas.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310155995.8A CN115875456B (en) | 2023-02-23 | 2023-02-23 | Self-expansion anti-seepage high-pressure sealing element for petroleum exploitation pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310155995.8A CN115875456B (en) | 2023-02-23 | 2023-02-23 | Self-expansion anti-seepage high-pressure sealing element for petroleum exploitation pipe |
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| CN115875456B true CN115875456B (en) | 2023-05-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107060682B (en) * | 2017-06-06 | 2019-04-12 | 东北大学 | A kind of high pressure self-locking packer and its set method |
| CN212004662U (en) * | 2020-04-02 | 2020-11-24 | 赵宝玉 | Safety protection device for petroleum pipeline |
| CN111911626B (en) * | 2020-06-23 | 2022-04-05 | 南通市飞宇石油科技开发有限公司 | Self-expansion anti-seepage sealing element for oil exploitation equipment |
| CN112013201B (en) * | 2020-09-08 | 2022-02-11 | 衡阳鸿菱石油管材有限责任公司 | Self-checking self-repairing type leakage-proof petroleum pipeline |
| CN112555410A (en) * | 2020-12-15 | 2021-03-26 | 刘凤 | Self-air-supply expansion type sealing ring |
| CN114251528B (en) * | 2021-11-08 | 2023-10-13 | 沈阳北方厚祥不锈钢有限公司 | Early warning self-treatment type steel pipeline connection auxiliary piece |
| CN115306963A (en) * | 2022-06-28 | 2022-11-08 | 南通市飞宇石油科技开发有限公司 | Petroleum pipeline connecting piece with self-repairing function |
| CN115143326B (en) * | 2022-08-08 | 2023-07-21 | 泰能天然气有限公司 | Natural gas pipeline sealing device |
| CN115654246A (en) * | 2022-10-26 | 2023-01-31 | 江苏韩通船舶重工有限公司 | High-temperature-resistant and corrosion-resistant glass reinforced plastic pipe for ship desulfurization system |
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