CN208456519U - Insulation assembly, upper lower contact assembling assembly and insulating short section - Google Patents
Insulation assembly, upper lower contact assembling assembly and insulating short section Download PDFInfo
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- CN208456519U CN208456519U CN201821083822.0U CN201821083822U CN208456519U CN 208456519 U CN208456519 U CN 208456519U CN 201821083822 U CN201821083822 U CN 201821083822U CN 208456519 U CN208456519 U CN 208456519U
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Abstract
The utility model belongs to petroleum well logging technology field.A kind of insulation assembly, upper lower contact assembling assembly and insulating short section, wherein insulation assembly includes external insulation sleeve, interior insulation set and felt pad, it is provided with anti-rotation structure between the interior insulation set and the top connection and the lower contact, realizes the circumferential clocking of turbine movement of the top connection and the lower contact.Lower contact assembling assembly thereon, including insulation assembly, pressing nut and retention device, retention device are correspondingly arranged between the pressing nut and the lower contact, and realize the locking of the pressing nut by the retention device；The application overall construction design is reasonable, insulating structure design is reliable, no moulding, the technique complicated without spraying etc., optimize the process of product component, it reduces costs, improves its sealing protection performance and anti-loosening property, realize the safe and reliable structure design of insulating short section, its lower end that can be applied to imitative CSU interface, has versatility.
Description
Technical field
The utility model belongs to petroleum well logging technology field, and in particular to a kind of insulation assembly, upper lower contact assembling assembly
And insulating short section.
Background technique
Insulating short section is common a kind of structure auxiliary pipe nipple in oil well logging, realizes electric field isolation, is used for electrical method resistance
Rate well logging, structure type is varied, at present domestic common insulating short section according to the difference of built-in electrical insulation mode mainly have with
Lower three kinds: moulding type, spary coating type, injection molding.
Moulding type is the deisgn product of early stage, good based on rubber sealing, is easily pressed and molded, and has certain wearability
The features such as, it uses till today always.But with increasing for horizontal well quantity, the appearance of complex hole condition, rubber product vulnerable to soda acid
Burn into is gradually limited its application vulnerable to the factors such as damage of colliding with.The identity insulating reliability is high, good airproof performance, but also deposits
The disadvantages of structure is complicated, and depot repair is needed after damage, therefore currently it is gradually backed out application.
Spary coating type is that have can be after thread surface even application insulating materials, a kind of structure type for growing up.
The type utilizes the principle of Electrostatic Absorption, and piece surface is sprayed on after powder metallurgy is atomized, and forms insulating layer, then passes through dress
Upper lower contact is compressed with mode.Since current tool interface system mostly uses the structure type of imitative CSU, lower end length is longer, internal
It is relatively deep, at present can only be locking by smearing the forms such as screw thread glue, double nut, reliable locking mode, is always that this kind of structure is thought
The problem solved.
Injection molding is to use for reference the new structure to grow up with product is bored, and structure is simple, directly by between screw thread
Isolated material is injected in gap, the insulation of lower casing in realization.The type can be sufficiently large reserved inner space, be easily installed inside
Electronic circuit etc., but since thread pitch is small, isolated material is unevenly distributed, the factors such as not fine and close, is bearing larger axial load
Often occurs the case where failure of insulation when lotus.In addition this type needs dedicated heating injection-moulding device, higher cost.
There are mainly three types of existing insulating short section structure types: moulding type, spary coating type, injection molding.
Moulding type, main structure are as follows: internal to be isolated by insulating materials, external realized by molded rubber seals.
Mainly have the disadvantage that: internal structure is complicated, needs processing mold, and assembly period is long, and under complex hole condition, rubber, which exists, to be adapted to
Property problem, such as vulnerable to acid and alkali corrosion, it is easy to wear scratch, after damage, need depot repair.
Spary coating type, main structure are as follows: spray certain thickness insulating materials on connector, realize splice insulation up and down
Isolation, connection aspect is by the way of pairs of anti-loose nut.It mainly has the disadvantage that: insulated part spraying, complex operation, spray
Compactness is applied, yield rate etc. is not easy to guarantee.It can not be to twisting when double nut mode is due to assembly, anti-loosing effect is general.
Injection molding property, main structure are as follows: thread pitch appropriate is designed, after upper lower contact connection, in thread pitch
High-intensitive isolated material is injected, realizes insulation, which structure is simple, but has the disadvantage that: can not repair, technological operation is multiple
It is miscellaneous, the problems such as yield rate is low.
For above-mentioned different type insulating short section feature, Novel insulating short piece mainly solves the problems, such as following several respects:
1. solving insulated part processing technology challenge, make simple and reliable for structure；
2. can maintenance problem, shortening processing and assembly period after solving damage；
3. solving the screw thread that underground vibrating generates moves back button phenomenon, the locking measures of reliable design；
4. selecting the material of acid and alkali-resistance, complex hole condition better adaptability, secondary seal safeguard procedures are designed.
Summary of the invention
The purpose of this utility model be it is in view of the above problems and insufficient, provide a kind of reasonable in design, stablize
Property it is good, can effectively realize dual-seal, and realize that the insulation assembly of nut anti-looseness, upper lower contact assembling assembly and insulation are short
Section.
In order to achieve the above objectives, it is adopted the technical scheme that:
A kind of insulation assembly for the top connection and lower contact of isolated insulation pipe nipple, and realizes that built-in electrical insulation seals, including
External insulation sleeve, matching are set in the outside of the top connection and lower contact；Interior insulation set be correspondingly arranged at the top connection and
Between the lower contact；Felt pad is correspondingly arranged between the top connection and the lower contact, and interior insulation set is interior
End fitting corresponding with the felt pad；Wherein, it is respectively provided between the interior insulation set and the top connection and the lower contact
There is anti-rotation structure, by the anti-rotation structure, realizes the circumferential clocking of turbine movement of the top connection and the lower contact.
The anti-rotation structure are as follows: the inner cavity of the interior insulation set corresponding with the top connection and the lower contact respectively
It is in polygonized structure with outer wall section；The end matching of the top connection is set in the inner cavity of the interior insulation set, described
The end matching of lower contact is set in the outside of the interior insulation set.
The anti-rotation structure are as follows: the end matching of the top connection is set in the inner cavity of the interior insulation set, described
The end matching of lower contact is set in the outside of interior insulation set, the top connection and the lower contact with the interior insulation
Set is connected by spline.
Sealing ring is provided between the external insulation sleeve and the top connection and the lower contact.
Sealing ring is provided between the interior insulation set and the top connection and the lower contact.
A kind of upper lower contact assembling assembly, comprising: such as above-mentioned insulation assembly；Pressing nut, is correspondingly arranged on described
The end of connector, and wherein one end of the felt pad is bonded with the pressing nut, the other end and the top connection, under connect
Head fitting corresponding with interior insulation set；And retention device, it is correspondingly arranged between the pressing nut and the lower contact, and lead to
It crosses the retention device and realizes the locking of the pressing nut；Wherein, the retention device includes: connection ring, is arranged in institute
It states in lower contact, and is acted with the lower contact circumferential clocking of turbine；Expansion controlling ring-shaped insert is provided with anti-rotation groove on the pressing nut side wall,
The expansion controlling ring-shaped insert front end grafting corresponding with the anti-rotation groove, and the expansion controlling ring-shaped insert is shored in the connection ring front end；And compression ring,
Its front end is shored with the connection ring, and is provided with split bolt between the compression ring and the expansion controlling ring-shaped insert；It draws when described Dui
Before bolt locking, the compression ring and the expansion controlling ring-shaped insert being capable of circumferential spinning movements relative to the connection ring；It draws when described Dui
Bolt lock is next, and the compression ring, expansion controlling ring-shaped insert are fixedly connected with the connection ring.
In the compression ring and described expansion controlling ring-shaped insert the two, at least one is connect with the connection ring in the conical surface.
A kind of insulating short section, comprising: such as above-mentioned upper lower contact assembling assembly；31 core plugs are fixed at described
In lower contact, and 31 core plug is fixedly connected with the connection ring；With 31 core sockets, it is correspondingly arranged at the top connection
It is interior.
It is connected by screw between 31 core plug and the connection ring, between 31 core plug and the lower contact
Pass through cylinder pin connection.
Further include upper cap and lower cover cap, and is separately positioned on the outer end of the top connection and the lower contact.
By adopting the above technical scheme, acquired beneficial effect is:
The structure of the insulation assembly of the application designs, and external insulation sleeve contacts sealing with top connection and lower contact fitting, no
The pressure of extraneous 140MPa can be only carried, and by setting sealing ring, realizes sealing；The structure design of its interior insulation set,
Lower contact can not only effectively be isolated, realize docking isolated insulation, and the structure design of its inner cavity, outer wall, Neng Goushi
The torque that 800N.M is now carried between upper lower contact, ensures the stability and reliability of assembly, while the interior insulation set of the application
It can satisfy the insulating requirements that lower contact is greater than 1000M；The cooperation of the application interior insulation set and external insulation sleeve, can be realized two
The secondary anti-filling of sealing, the component circuit valuable to protection downhole instrument are very important.
It is designed by the structure of the application, when pipe nipple tension, felt pad is main load part, is insulated using special type
Material, the material is high in the direction compression strength of perpendicular layers, and the application of the material can make Novel insulating short piece meet receiving 30t axis
To pulling tension requirements.
The structure of the retention device of the application designs, and when assembly, before the split bolt on compression ring is not tightened, rotation is anti-
Anti-rotation key position in change, with the anti-rotation groove on clamp nut it is fully mated after, tighten split bolt, complete assembling.It should
Component is packed into inside pipe nipple with corer, and front end and clamp nut keyway cooperate, and realizes anti-rotation, behind it is fixed with the blind hole of lower contact
Position is fixed；It is designed simultaneously by conical surface compressing structure between its component, realizes and rotate in a circumferential direction adjustable, finally can be realized fixation
It is locking, substantially increase the stability of the reasonability of its assembly and the structure of entire pipe nipple.
The application overall construction design is reasonable, and insulating structure design is reliable, no moulding, the technique complicated without spraying etc., excellent
The process for having changed product component, reduces costs, and improves its sealing protection performance and anti-loosening property, realizes insulation
The safe and reliable structure design of pipe nipple, can be applied to the lower end of imitative CSU interface, has versatility.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the insulation assembly of the application.
Fig. 2 is the fractionation structural representation of insulation assembly
Fig. 3 is the structural schematic diagram of the retention device of the application.
Fig. 4 is the assembling structure schematic diagram of top connection and lower contact.
Fig. 5 is the structural schematic diagram of the application insulating short section.
Fig. 6 is the fractionation structural representation of the application insulating short section.
Serial number in figure: 100 be top connection, 200 be lower contact, 300 be insulation assembly, 301 be external insulation sleeve, 302 be in
Insulation sleeve, 303 be felt pad, 304 be sealing ring, 400 be retention device, 401 be connection ring, 402 be expansion controlling ring-shaped insert, 403 be pressure
Tight ring, 404 be split bolt, 500 be pressing nut, 600 be 31 core plugs, 601 be screw, 602 be straight pin, 700 be 31
Core socket, 800 be upper cap, 900 be lower cover cap.
Specific embodiment
It elaborates below in conjunction with attached drawing to specific embodiment of the present utility model.
Referring to Fig. 1 and Fig. 2, a kind of insulation assembly, for the top connection 100 and lower contact 200 of isolated insulation pipe nipple, and it is real
Existing built-in electrical insulation sealing comprising external insulation sleeve 301, interior insulation set 302 and felt pad 303, the matching of external insulation sleeve 301 are arranged
In the outside of top connection 100 and lower contact 200；Interior insulation set 302 is correspondingly arranged between top connection 100 and lower contact 200；Absolutely
Edge pad 303 is correspondingly arranged between top connection 100 and lower contact 200, and the inner end of interior insulation set 302 and felt pad 303 are right
It should be bonded；Wherein, it is provided with anti-rotation structure between interior insulation set 302 and top connection 100 and lower contact 200, passes through anti-rotation knot
Structure realizes the circumferential clocking of turbine movement of top connection and lower contact.
In the present embodiment, anti-rotation structure are as follows: interior insulation set 302 corresponding with top connection 100 and lower contact 200 respectively
Inner cavity and outer wall section be in polygonized structure, preferably regular quadrangle, regular pentagon or regular hexagon；The end of top connection 100
Portion's matching is set in the inner cavity of interior insulation set 302, and the end matching of lower contact 200 is set in the outside of interior insulation set 302, from
And realize the transmitting of torque.
Its anti-rotation structure can also be following form: if the end matching of top connection is set in the inner cavity of interior insulation set,
The end matching of lower contact is set in the outside of interior insulation set, and top connection and lower contact are covered with interior insulation and connect by spline,
Or corresponding keyway and key are set, realize the transmitting of torque.
Be provided with sealing ring between external insulation sleeve and top connection and lower contact, interior insulation set and top connection and lower contact it
Between be provided with sealing ring, the circle number of sealing ring can be individual pen, may be set to be the double-deck circle, ensure its sealing performance
And insulation performance, realize that inside and outside dual seals anti-filling protection.
Specifically, external insulation sleeve is primarily subjected to extraneous 140MPa pressure, and guarantees the insulated lengths of upper lower contact 150mm,
Using extraordinary insulating materials.External insulation sleeve inner sealing surface one end and top connection seal, and other end and lower contact seal, and inside has
Support, is not subject to absolute pressure, double sealing, sealed reliable is all made of at upper-lower seal.
Its interior insulation set, using extraordinary insulating materials, main function has the following: the 1. upper lower contact of isolation, in realization
Portion's insulation；2. designing inside and outside six sides, make lower contact that can bear the torque effect of 800N.m；3. setting external seal slot and interior sealing
Behind face, with upper lower contact cooperation, it can be achieved that the anti-filling function of secondary seal after external seal failure.
Interior insulation covers the certain length of the lower contact in internal insulation, at 25 DEG C of room temperature, can meet lower contact and be greater than
The insulating requirements of 1000M Ω (under 1000V voltage tester).Hexagonal structure inside and outside interior insulation ring design, interior six side and top connection
Six sides cooperate in outer six sides cooperation, outer six side and lower contact, to realize the anti-rotation requirement of upper lower contact 800N.m.Interior insulation set
Inner sealing surface and top connection cooperate, and external seal slot and lower contact cooperate, and after installing O-ring, can independently realize and bear outside 140MPa
Boundary's pressure requirements, therefore, after outer seal ring failure, inner seal ring has the function of the anti-filling of secondary seal, this is to protection downhole instrument
Valuable component circuit is very important.When pipe nipple tension, felt pad is main load part, is insulated using special type
Material, the material is high in the direction compression strength of perpendicular layers, and the application of the material can make Novel insulating short piece meet receiving 30t axis
To pulling tension requirements.
Referring to figures 1-4, disclosed herein as well is a kind of upper lower contact assembling assemblies, including exhausted in such as above-described embodiment
Edge component 300, pressing nut 500 and retention device 400, pressing nut 500 are correspondingly arranged at the end of top connection 100, pressure
It is arranged in top connection 100 Gu nut 500 is threadedly coupled, and is used to the felt pad 303 that locks, wherein one end of felt pad 303
It is bonded with pressing nut 500, other end fitting corresponding with top connection 100, lower contact 200 and interior insulation set 302, so as to
It is carried by felt pad axial to drawing active force between top connection and lower contact；Its retention device 400 is correspondingly arranged at pressing spiral shell
Between mother 500 and lower contact 200, and the locking of pressing nut 500 is realized by retention device 400；Wherein, retention device 400
Including connection ring 401, expansion controlling ring-shaped insert 402 and compression ring 403, connection ring 401 is arranged in lower contact, and circumferentially same with lower contact
Step movement；Anti-rotation groove, the grafting corresponding with anti-rotation groove of 402 front end of expansion controlling ring-shaped insert, and expansion controlling ring-shaped insert are provided on 500 side wall of pressing nut
402 shore in 401 front end of connection ring；403 front end of compression ring is shored with connection ring 401, and compression ring 403 and expansion controlling ring-shaped insert 402 it
Between be provided with split bolt 404；Before the locking of split bolt 404, compression ring 403 and expansion controlling ring-shaped insert 402 are relative to 401 energy of connection ring
Enough circumferential direction spinning movements；After split bolt 404 is locked, compression ring 403, expansion controlling ring-shaped insert 402 are fixedly connected with connection ring 401, and
The rotation for limiting pressing nut 500 reaches locking and obtains purpose.
Further, in order to ensure effect and stability that it is linked and packed, in both compression ring 403 and expansion controlling ring-shaped insert 402
In, at least one connect with connection ring 401 in the conical surface, is connected as with compression ring with annular conical surface is connect in the diagram of the present embodiment
Example.
After Novel insulating short piece completes the assembling of insulated part, upper lower contact has insulation function, the axially loaded of pipe nipple
It is realized by clamp nut, clamp nut should have good locking measures in addition to having enough screw strengths, this is design
Key point.Clamp nut designs keyway, and when assembly is tightened with self-control box spanner, due to being threadedly coupled the uncertainty in direction,
The direction of clamp nut keyway be also it is uncertain, conventional structure can not be such that antirotation keys and clamp nut keyway on expansion controlling ring-shaped insert match
It closes, realizes locking, it is therefore desirable to design adjustable anti-rotation bond structure.Retention device disclosed in the present embodiment can be applicable to imitative
The lower end of CSU interface has universal adaptability.
Referring to Fig. 1-Fig. 6, disclosed herein as well is a kind of insulating short sections, the upper lower contact assembly including such as above-described embodiment
Component, 31 core of core plug 600 and 31 socket, 700,31 core plug 600 are fixed in lower contact 200, and 31 core plugs 600
It is fixedly connected with connection ring 401；31 core sockets 700 are correspondingly arranged in top connection 100, specific 31 core plug 600 with connect
It is connected between ring 401 by screw 601, is connected between 31 core plugs 600 and lower contact 200 by straight pin 602.In top connection
It is also respectively provided with upper cap and lower cover cap with the outer end of lower contact, realizes whole assembly and protection.
Insulating short section in the present embodiment is compared compared with prior art, mainly has the advantage that 1. structure is simple, insulation
Reliably.No moulding, without spraying etc. complicated technologies；2. inside and outside two layers of sealing, after outer layer seal failure, there is the sealing protection of internal layer
Measure；3. having the reliable locking measures of clamp nut.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only the principles of the present invention, the utility model also has respectively on the premise of not departing from the spirit and scope of the utility model
Kind changes and improvements, these changes and improvements are both fallen in the range of claimed invention.The requires of the utility model
Protection scope defined by appended claims and its equivalent.
Claims (10)
1. a kind of insulation assembly for the top connection and lower contact of isolated insulation pipe nipple, and realizes that built-in electrical insulation seals, feature
It is, including；
External insulation sleeve, matching are set in the outside of the top connection and lower contact；
Interior insulation set is correspondingly arranged between the top connection and the lower contact；
And felt pad, be correspondingly arranged between the top connection and the lower contact, and the interior insulation set inner end with
The corresponding fitting of the felt pad；
Wherein, it is provided with anti-rotation structure between the interior insulation set and the top connection and the lower contact, by described anti-
Rotation structure realizes the circumferential clocking of turbine movement of the top connection and the lower contact.
2. insulation assembly according to claim 1, which is characterized in that the anti-rotation structure are as follows: respectively with it is described on connect
The inner cavity and outer wall section of the head interior insulation set corresponding with the lower contact are in polygonized structure；The end of the top connection
Portion's matching is set in the inner cavity of the interior insulation set, and the end matching of the lower contact is set in the outer of the interior insulation set
Side.
3. insulation assembly according to claim 1, which is characterized in that the anti-rotation structure are as follows: the end of the top connection
Portion's matching is set in the inner cavity of the interior insulation set, and the end matching of the lower contact is set in the outer of the interior insulation set
Side, the top connection and the lower contact are covered with the interior insulation to be connect by spline.
4. insulation assembly according to claim 1, which is characterized in that the external insulation sleeve and the top connection and it is described under
Sealing ring is provided between connector.
5. insulation assembly according to claim 1, which is characterized in that interior insulation set and the top connection and it is described under
Sealing ring is provided between connector.
6. a kind of upper lower contact assembling assembly characterized by comprising
Insulation assembly a method as claimed in any one of claims 1 to 5；
Pressing nut is correspondingly arranged at the end of the top connection, and wherein one end of the felt pad and the pressing spiral shell
Female patch is closed, other end fitting corresponding with the top connection, lower contact and interior insulation set；
And retention device, it is correspondingly arranged between the pressing nut and the lower contact, and real by the retention device
Now the pressing nut is locking；
Wherein, the retention device includes:
Connection ring is arranged in the lower contact, and acts with the lower contact circumferential clocking of turbine；
Expansion controlling ring-shaped insert, is provided with anti-rotation groove on the pressing nut side wall, the expansion controlling ring-shaped insert front end grafting corresponding with the anti-rotation groove,
And the expansion controlling ring-shaped insert is shored in the connection ring front end；
And compression ring, front end are shored with the connection ring, and are provided between the compression ring and the expansion controlling ring-shaped insert to drawing spiral shell
Bolt；Before split bolt locking, the compression ring and the expansion controlling ring-shaped insert circumferential can be rotated relative to the connection ring and be moved
Make；After split bolt locking, the compression ring, expansion controlling ring-shaped insert are fixedly connected with the connection ring.
7. upper lower contact assembling assembly according to claim 6, which is characterized in that in the compression ring and the expansion controlling ring-shaped insert
In the two, at least one is connect with the connection ring in the conical surface.
8. a kind of insulating short section characterized by comprising
Upper lower contact assembling assembly as claimed in claims 6 or 7；
31 core plugs are fixed in the lower contact, and 31 core plug is fixedly connected with the connection ring；
With 31 core sockets, it is correspondingly arranged in the top connection.
9. insulating short section according to claim 8, which is characterized in that pass through between 31 core plug and the connection ring
Screw connection, passes through cylinder pin connection between 31 core plug and the lower contact.
10. insulating short section according to claim 8, which is characterized in that further include upper cap and lower cover cap, and be respectively set
In the outer end of the top connection and the lower contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821083822.0U CN208456519U (en) | 2018-07-10 | 2018-07-10 | Insulation assembly, upper lower contact assembling assembly and insulating short section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821083822.0U CN208456519U (en) | 2018-07-10 | 2018-07-10 | Insulation assembly, upper lower contact assembling assembly and insulating short section |
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| Publication Number | Publication Date |
|---|---|
| CN208456519U true CN208456519U (en) | 2019-02-01 |
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ID=65171248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821083822.0U Active CN208456519U (en) | 2018-07-10 | 2018-07-10 | Insulation assembly, upper lower contact assembling assembly and insulating short section |
Country Status (1)
| Country | Link |
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| CN (1) | CN208456519U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108729864A (en) * | 2018-07-10 | 2018-11-02 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Insulation assembly, upper lower contact assembling assembly and insulating short section |
-
2018
- 2018-07-10 CN CN201821083822.0U patent/CN208456519U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108729864A (en) * | 2018-07-10 | 2018-11-02 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Insulation assembly, upper lower contact assembling assembly and insulating short section |
| CN108729864B (en) * | 2018-07-10 | 2023-10-20 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Insulating assembly, upper and lower joint assembly and insulating nipple |
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