CN110611200A

CN110611200A - Plug assembly

Info

Publication number: CN110611200A
Application number: CN201811581892.3A
Authority: CN
Inventors: 王超
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2018-09-30
Filing date: 2018-12-24
Publication date: 2019-12-24
Anticipated expiration: 2038-12-24
Also published as: CN110611200B

Abstract

The invention provides a plug assembly which comprises a plug, wherein the plug comprises a conductor contact element and an insulating sleeve body which are fastened and sleeved together from inside to outside in sequence, one end of the insulating sleeve body is provided with an outer shell which is used for being matched with a through hole of a wiring shell along jacking, the outer shell comprises at least two sub-shells which are arranged at intervals along the radial direction, and annular grooves for embedding sealing rings are formed on the opposite side surfaces of at least two adjacent sub-shells and the corresponding end surface of the insulating sleeve body. The outer shell is arranged into at least two sub-shells at intervals, so that the sealing ring is directly contacted and sealed with the insulating sleeve body, the condition that better sealing performance must be ensured between the outer shell and the insulating sleeve body in the plug assembly is avoided, the sealing standard between the insulating sleeve body and the outer shell is reduced, the processing technology of the plug assembly is simplified, and the production cost of the plug assembly is reduced.

Description

Plug assembly

Technical Field

The present invention relates to a plug assembly.

Background

In the process of oil exploration, a plug is used for exploration equipment, and most of underground operations are in a high-temperature and high-pressure environment, and common plugs are shown in the Chinese patent with the publication number of CN102683993B, wherein the plug comprises a conductor contact piece and an insulating sleeve body which are tightly sleeved together from inside to outside, one end of the insulating sleeve body is provided with a sealing end, when the plug is installed on a wiring shell, a through hole is formed in the wiring shell, and the end face of the sealing end is pressed and assembled at the hole edge of the through hole. The sealing end is provided with a ring groove, a sealing ring is embedded in the ring groove, and the sealing ring elastically deforms after being pressed to seal a gap between the end face of the sealing end and the perforation edge of the wiring shell.

However, the common plug is not suitable for high temperature and high pressure environment, and the specific reason is that most of the insulating sleeve bodies in the plug are made of softer materials, the aperture of the through hole on the wiring shell is generally larger than the outer diameter of the plug part penetrating through the through hole, when the part of the insulating sleeve body located on the radial inner side of the sealing ring is used, one side of the insulating sleeve body is directly communicated with the wiring shell, the other side of the insulating sleeve body bears high pressure impact, under the continuous action of pressure difference between the two sides and the high temperature using environment, the part of the insulating sleeve body located on the radial inner side of the sealing ring is easy to deform irreversibly towards the direction of the wiring shell, the normal use of the plug is affected or the sealing effect of the plug and the.

In order to solve such problems, a technical staff has studied and improved the same, and a general solution is to fix an outer shell having a strength larger than that of the insulative housing body on the end surface of the sealed end of the insulative housing body, and when in use, the outer shell is pressed against the edge of the through hole of the terminal housing, and the deformation of the portion of the insulative housing body inside the sealing ring is reduced by virtue of the high strength of the outer shell. An annular groove is formed in the end face, used for being in abutting fit with the perforation hole, of the outer shell, and a sealing ring is embedded in the annular groove to be in sealing fit with the wiring shell.

The plug reduces the deformation generated after the pressure difference of the insulating sleeve body to a certain extent, in order to ensure the sealing performance during use, the sealing performance between the insulating sleeve body and the conductor contact element, between the insulating sleeve body and the outer shell and between the outer shell and the wiring shell needs to be better, wherein, the sealing performance between the outer shell and the wiring shell is realized by the sealing ring, and because the sealing performance between the insulating sleeve body and the conductor contact element, between the insulating sleeve body and the outer shell and between the outer shell and the wiring shell needs to be sealed, the manufacturing cost of the plug is increased to a certain extent. Moreover, because the outer shell and the insulating sleeve body are made of different materials and are usually combined together in the modes of injection, plastic compression, glue, assembly and the like, when the connector is actually used, the outer shell and the insulating sleeve body are easily separated, so that a gap is formed between the insulating sleeve body and the outer shell, the protection performance of a plug is reduced, and external liquid easily enters the wiring shell through the gap.

Disclosure of Invention

The invention aims to provide a plug assembly to solve the technical problem that in the prior art, a gap is easy to appear between an outer shell and an insulating sleeve body, so that the electrical protection performance of a wiring shell matched with a plug is reduced.

In order to achieve the purpose, the technical scheme of the plug assembly is as follows: the utility model provides a plug subassembly, includes the plug, and the plug includes fastening suit conductor contact and the insulator body together in proper order from inside to outside, the one end of insulator body is equipped with the perforation hole that is used for with the wiring casing along roof pressure complex shell body, the shell body includes along radial interval arrangement's at least two branch casings, two at least adjacent branch casings the opposite flank with the corresponding terminal surface of insulator body forms the annular that is used for inlaying the dress sealing washer.

The invention has the beneficial effects that: the outer shell is arranged into at least two sub-shells at intervals, so that the sealing ring is directly contacted and sealed with the insulating sleeve body, the condition that better sealing performance must be ensured between the outer shell and the insulating sleeve body in the plug assembly is avoided, the sealing standard between the insulating sleeve body and the outer shell is reduced, the processing technology of the plug assembly is simplified, and the production cost of the plug assembly is reduced. After the outer shell is arranged, the strength of a part which is easy to deform under the action of pressure difference in the insulating sleeve body can be enhanced, when a gap appears between the outer shell and the insulating sleeve body, the sealing ring can play a role in sealing, and external liquid is prevented from entering the wiring shell through the gap, so that the electrical protection performance of the wiring shell is enhanced.

Further, the sub-shell is a metal shell. The effect of this scheme lies in, metal casing's structural strength is higher.

Furthermore, the conductor contact pieces are arranged in parallel, the radially innermost sub-shell is provided with at least two positioning insertion holes for the conductor contact pieces to correspondingly position and penetrate out, and the insulation sleeve body is integrally provided with an insulation cylinder between the positioning insertion holes and the corresponding conductor contact pieces. The effect of this scheme lies in, through setting up the insulating cylinder, can carry out insulation treatment to the part of wearing out in the insulating sleeve body in the conductor contact, has strengthened the electric property of plug.

Further, the plug assembly comprises the sealing ring embedded in the annular groove.

The technical scheme of the plug assembly is as follows: the utility model provides a plug assembly, includes the plug, and the plug includes fastening suit conductor contact and the insulator body together in proper order from inside to outside, the one end of insulator body is equipped with the perforation hole that is used for with the wiring casing and follows roof pressure complex shell body, the one end an organic whole of insulator body is provided with and is used for the flange of arranging towards wiring casing place direction protrusion, the flange is located the radial outside of shell body, flange and the relative interval arrangement of shell body, the radial lateral surface of flange and shell body with the insulator body forms the annular that is used for installing the sealing washer.

The invention has the beneficial effects that: through integrative flange that sets up on the insulator housing for the flange can form the annular with shell body, insulator housing, makes the sealing washer direct with the insulator housing contact sealedly, has avoided the condition emergence of must guaranteeing better leakproofness between the outer shell and the insulator housing in the plug subassembly, thereby has reduced the sealed standard between the insulator housing and the shell body, has simplified the processing technology of plug subassembly, has reduced the manufacturing cost of plug subassembly. After the outer shell is arranged, the strength of a part which is easy to deform under the action of pressure difference in the insulating sleeve body can be enhanced, when a gap appears between the outer shell and the insulating sleeve body, the sealing ring can play a role in sealing, and external liquid is prevented from entering the wiring shell through the gap, so that the electrical protection performance of the wiring shell is enhanced.

Further, the outer shell is a metal shell. The effect of this scheme lies in, metal casing's structural strength is higher.

Furthermore, the conductor contact pieces are arranged in parallel, the outer shell is provided with at least two positioning insertion holes for the conductor contact pieces to correspondingly position and penetrate out one by one, and the insulating sleeve body is integrally provided with an insulating cylinder positioned between the positioning insertion holes and the corresponding conductor contact pieces. The effect of this scheme lies in, through setting up the insulating cylinder, can carry out insulation treatment to the part of wearing out in the insulating sleeve body in the conductor contact, has strengthened the electric property of plug.

Drawings

FIG. 1 is a schematic view of a plug assembly embodiment 1 of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is a schematic view (including a partial cross-sectional view) of plug assembly embodiment 2 of the present invention;

description of reference numerals: 100-a plug; 11-a conductor contact; 12-an insulating sheath body; 13-a first sub-housing; 14-a second sub-housing; 15-ring groove; 16-an insulating cylinder; 200-sealing ring; 31-an outer shell; 32-sealing ring; 33-a flange; 34-insulating sheath body.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

In an embodiment 1 of the plug assembly of the present invention, as shown in fig. 1 to fig. 2, the plug assembly includes a plug 100, the plug 100 includes two conductor contacts 11 arranged in parallel (in other embodiments, the number of the conductor contacts may be increased or decreased according to actual conditions), an insulating sleeve 12 is sleeved outside the two conductor contacts 11, and two ends of the conductor contacts 11 penetrate through the insulating sleeve 12. As can be seen in fig. 1, the insulating jacket body 12 includes a portion of larger outer diameter at the right end. When the plug 100 is installed, the plug needs to be installed on the wiring housing, the right end of the conductor contact 11 extends into the wiring housing for wiring, and the left end of the conductor contact is left outside the wiring housing to be connected with an adaptive socket plug. Specifically, a through hole with a diameter smaller than the outer diameter of the right end of the insulating sleeve body 12 is formed in the wiring shell, the plug 100 penetrates through the through hole from left to right, the right end of the insulating sleeve body 12 is pressed against the outer side edge of the through hole, and then the insulating sleeve body 12 is fixed on the wiring shell by using a fastening member such as a screw (of course, in other embodiments, the manner of fixing the insulating sleeve body on the wiring shell may be selected according to actual conditions, such as welding, and the like).

In order to prevent the large deformation of some parts of the insulating sleeve body 12 caused by the excessive differential pressure on the two sides of the insulating sleeve body 12, an outer shell is fixedly sleeved on the outside of the insulating sleeve body 12, wherein the outer shell and the insulating sleeve body 12 are combined together through injection, plastic compression, gluing, assembling and the like. The right end of the outer housing is adapted to be press-fitted to the top of the terminal housing. As can be seen from fig. 1 and 2, the outer casing comprises a first partial casing 13 and a second partial casing 14 which are arranged at a radial distance from each other, and the second partial casing 14 is located radially inside the first partial casing 13. The second sub-housing 14 is provided with positioning insertion holes for the two conductor contacts 11 to correspondingly position and penetrate through, as can be seen from fig. 1, two insulating cylinders 16 are further integrally arranged on the insulating sleeve body 12, and the insulating cylinders 16 are located between the positioning insertion holes and the conductor contacts 11.

As can be seen from fig. 1 and 2, the opposite radial side surfaces of the first sub-shell 13 and the second sub-shell 14 and the right end surface of the insulating sheath body 12 together form an annular groove 15, and a seal ring 200 is embedded in the annular groove 15. After the outer shell is arranged in a split manner and the sealing ring 200 is arranged, even if the insulating sleeve body 12 and the second sub-shell 14 are separated, liquid cannot flow into the insulating sleeve body 12 and the second sub-shell 14, and further the liquid is prevented from continuously flowing into the wiring shell. After the second sub-housing 14 is added, the portion of the insulating sheath 12 located radially inward of the seal ring 200 (i.e., the portion corresponding to the second sub-housing 14) is not deformed in the direction in which the terminal housing is located.

In this embodiment, the outer housing is sleeved outside the insulating sleeve body 12 and is fixedly connected to one end of the insulating sleeve body 12, and the outer housing can be considered to be fixed to one end of the insulating sleeve body 12. In other embodiments, the outer shell may be provided only on one end face of the insulative housing body 12 and does not extend to the circumferential outside of the insulative housing body 12.

Of course, in other embodiments, the outer casing may be divided into three or more sub-casings spaced apart in the radial direction, and at least two adjacent sub-casings may have annular grooves formed therebetween.

The embodiment 2 of the plug assembly of the present invention, as shown in fig. 3, is different from the above-described embodiment in that a flange 33 is projectingly disposed at one end of an insulative housing body 34, the flange 33 and the insulative housing body 34 are integrally formed, an outer housing 31 is fixedly disposed at the corresponding end of the insulative housing body 34, the outer housing 31 is located radially inside the flange 33, the outer housing 31 functions as in embodiment 1, and the outer housing 31, the flange 33 and the insulative housing body 34 form a ring groove in which a seal ring 32 is fitted. In this embodiment, the outer shell 31 can reinforce the easily deformable portion of the insulating sleeve body 34, and the sealing ring 32 is in direct contact with the insulating sleeve body 34, so that the overall sealing performance and the electrical performance of the plug are improved.

In the above embodiments, the outer casing is a metal casing, and in other embodiments, the outer casing may be a casing made of other materials having a structural strength greater than that of the insulating sheath body.

Claims

1. The utility model provides a plug assembly, includes the plug, and the plug includes fastening suit conductor contact and the insulator body together in proper order from inside to outside, the one end of insulator body is equipped with the perforation hole that is used for with the wiring casing and follows roof pressure complex shell body, its characterized in that: the outer shell comprises at least two sub-shells which are arranged at intervals along the radial direction, and annular grooves for embedding the sealing rings are formed on the opposite side surfaces of at least two adjacent sub-shells and the corresponding end surfaces of the insulating sleeve body.

2. The plug assembly of claim 1, wherein: the sub-shell is a metal shell.

3. The plug assembly of claim 2, wherein: the insulation sleeve body is integrally provided with an insulation cylinder positioned between the positioning jacks and the corresponding conductor contacts.

4. A plug assembly according to claim 1, 2 or 3, wherein: the plug assembly comprises the sealing ring embedded in the annular groove.

5. The utility model provides a plug assembly, includes the plug, and the plug includes fastening suit conductor contact and the insulator body together in proper order from inside to outside, the one end of insulator body is equipped with the perforation hole that is used for with the wiring casing and follows roof pressure complex shell body, its characterized in that: the one end an organic whole of the insulating bush body is provided with and is used for the flange of arranging towards the protruding of the direction of wiring casing place, the flange is located the radial outside of shell body, the relative interval arrangement of flange and shell body, the radial lateral surface of flange and shell body with the insulating bush body forms the annular that is used for installing the sealing washer.

6. The plug assembly of claim 5, wherein: the shell body is a metal shell body.

7. The plug assembly of claim 6, wherein: the insulation sleeve comprises a shell body, at least two conductor contacts and an insulation sleeve body, wherein the conductor contacts are arranged in parallel, the shell body is provided with at least two positioning insertion holes for the conductor contacts to penetrate through in a one-to-one corresponding positioning mode, and the insulation sleeve body is integrally provided with an insulation sleeve positioned between the positioning insertion holes and the corresponding conductor contacts.

8. The plug assembly of claim 5, 6 or 7, wherein: the plug assembly comprises the sealing ring embedded in the annular groove.