CN214124799U

CN214124799U - Prefabricated formula equipment terminal

Info

Publication number: CN214124799U
Application number: CN202022453105.6U
Authority: CN
Inventors: 郑道江; 杨洪柱; 赵彦慧; 范玉林
Original assignee: Fujian Quanyuan Electric Equipment Co ltd
Current assignee: Fujian Quanyuan Electric Equipment Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-09-03
Anticipated expiration: 2030-10-29

Abstract

The utility model relates to a prefabricated type equipment terminal, including prefabricated terminal body, the one end of prefabricated terminal body is connected with binding post, the binding post overlaps with the connecting portion outside of prefabricated terminal body and is equipped with sealed pyrocondensation pipe, prefabricated terminal body includes insulating sleeve and locates the cable core inside the insulating sleeve, the one end of cable core stretches out insulating sleeve and is connected with binding post, sealed pyrocondensation pipe both ends are established respectively the cover and are established in the outside of insulating sleeve and binding post; and a stress cone is arranged in one end, away from the wiring terminal, of the insulating sleeve. The utility model has the advantages of reasonable design, need not expand, warp when depositing, long-term use that still can be normal after depositing, long service life, simple to operate.

Description

Prefabricated formula equipment terminal

The technical field is as follows:

the utility model relates to a prefabricated formula equipment terminal.

Background art:

the cable terminal is used for being assembled to the head end and the tail end of a cable line to complete a device for connecting other electrical equipment, and is widely applied to various fields of electric power, petrochemical industry, metallurgy, railway ports, buildings and the like. Most of the existing cable terminals are of a cold-shrinkage structure, and the cold-shrinkage cable terminals need to be expanded when being stored; when the storage time is long, the cold-shrinkage type cable terminal cannot be well restored, so that the structures such as the stress cone and the like can deviate from the design value, and the normal use of the cable terminal is influenced.

The utility model has the following contents:

the utility model discloses make the improvement to the problem that above-mentioned prior art exists, promptly the utility model aims to solve the technical problem that a prefabricated formula equipment terminal is provided, structural design is reasonable, does not have permanent deformation, carries out normal use after convenient depositing for a long time.

In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a prefabricated formula equipment terminal, includes prefabricated terminal body, the one end of prefabricated terminal body is connected with binding post, the connecting portion outside cover of binding post and prefabricated terminal body is equipped with sealed pyrocondensation pipe.

Furthermore, the prefabricated terminal body comprises an insulating sleeve and a cable core arranged inside the insulating sleeve, one end of the cable core extends out of the insulating sleeve and is connected with the wiring terminal, and two ends of the sealed heat-shrinkable tube are respectively sleeved on the outer sides of the insulating sleeve and the wiring terminal; and a stress cone is arranged in one end, away from the wiring terminal, of the insulating sleeve.

Furthermore, the cable core and the connecting terminal are compressed in a mechanical compression joint mode.

Furthermore, the inner wall of the sealed heat shrink tube is connected with the insulating sleeve and the wiring terminal through a sealant.

Furthermore, the end part of the stress cone adopts a transition mode of combining an arc section and a horizontal section, and the horizontal section of the stress cone is parallel to the cable core.

Furthermore, the outer part of the insulating sleeve is of a laminated structure with large umbrella skirts and small umbrella skirts distributed alternately.

Furthermore, one end, far away from the wiring terminal, of the insulating sleeve is connected with a grounding wire.

Compared with the prior art, the utility model discloses following effect has: this prefabricated formula equipment terminal structural design is reasonable, need not expand, warp when depositing, and long-term storage back still can normal use, long service life, simple to operate.

Description of the drawings:

fig. 1 is a schematic front sectional view of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a stress cone in an embodiment of the present invention.

The specific implementation mode is as follows:

the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

As shown in fig. 1-2, the utility model relates to a prefabricated formula equipment terminal, including prefabricated terminal body 1, the one end of prefabricated terminal body 1 is connected with binding post 2, binding post 2 is equipped with sealed pyrocondensation pipe 3 with the connecting portion outside cover of prefabricated terminal body 1.

In this embodiment, the prefabricated terminal body 1 includes an insulating sleeve 4 and a cable core 5 disposed inside the insulating sleeve 4, one end of the cable core 5 extends out of the insulating sleeve 4 and is pressed against the connection terminal 2 in a mechanical compression joint manner, and two ends of the sealed heat-shrinkable tube 3 are respectively sleeved outside the insulating sleeve 4 and the connection terminal 2; and a stress cone 6 is arranged in one end, away from the wiring terminal 2, of the insulating sleeve 4.

In this embodiment, the inner wall of the sealed heat shrinkable tube 3 is connected with the insulating sleeve 4 and the wiring terminal 2 through a sealant 7.

In this embodiment, the end of the stress cone 6 adopts a transition mode of combining the arc section 601 and the horizontal section 602, and the horizontal section of the stress cone is parallel to the cable core. The end part of the stress cone adopts the transition of the circular arc section to effectively reduce the field intensity on the inner side of the stress cone, but also can increase the field intensity on the outer insulating surface, so that the directional migration of electrons is more easily formed under the direct-current environment, the surface creepage problem is more serious, and the transition mode of combining the circular arc section and the horizontal section is adopted, so that the field intensity on the outer insulating surface can be greatly reduced on the premise of not increasing the insulating thickness. That is, the stress cone in this embodiment adopts a structure in which the arc and the horizontal section are combined, which not only reduces the field strength of the inner side (the direction close to the cable) of the stress cone, but also suppresses the electric field on the outer surface of the insulation.

In this embodiment, the outer portion of the insulating sleeve 4 is a stacked structure in which large and small umbrella skirts 8 are alternately distributed. Preferably, in order to improve the waterproof effect of the terminal, the surfaces of the insulating sleeve and the umbrella skirt are provided with waterproof coatings.

In this embodiment, one end of the insulating sleeve 4, which is far away from the terminal 2, is connected to a ground wire 9.

This prefabricated formula equipment terminal is at first prefabricated shaping of mill's mould pressing, adopts the constant force spring to fix the cable shielding earth connection on the cable shielding layer during installation earlier, then embolias the prefabricated formula equipment terminal that contains geometric shape stress cone, and the equipment terminal outside is the umbrella skirt structure, still plays insulating effect when solving the terminal electric field of cable and concentrates the problem. After the equipment terminal is installed, the wiring terminal is installed on a cable core and is compressed in a mechanical compression joint mode, and finally sealing treatment is carried out on the joint of the wiring terminal and the equipment terminal through sealing and heat-sealing shrinkage. Compared with a cold-shrinkage type terminal, the prefabricated equipment terminal has no limit of storage period, does not need expansion and has no permanent deformation, so that structures such as a stress cone can better restore theoretical design field intensity calculation data, has no deviation from a design value, has the advantages of more reasonable structure, long service life, low cost, convenience in installation and the like, and is a key direction for future development.

The utility model discloses if disclose or related to mutual fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated.

The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims

1. A prefabricated formula equipment terminal which characterized in that: the terminal comprises a prefabricated terminal body, wherein one end of the prefabricated terminal body is connected with a wiring terminal, and a sealing heat-shrinkable tube is sleeved outside a connecting part of the wiring terminal and the prefabricated terminal body; the prefabricated terminal body comprises an insulating sleeve and a cable core arranged in the insulating sleeve, one end of the cable core extends out of the insulating sleeve and is connected with the wiring terminal, and two ends of the sealed heat-shrinkable tube are sleeved on the outer sides of the insulating sleeve and the wiring terminal respectively; a stress cone is arranged inside one end, far away from the wiring terminal, of the insulating sleeve; the inner wall of the sealed heat-shrinkable tube is connected with the insulating sleeve and the wiring terminal through a sealant; the end part of the stress cone adopts a transition mode of combining an arc section and a horizontal section, and the horizontal section of the stress cone is parallel to the cable core; the outside of the insulating sleeve is of a laminated structure with large umbrella skirts and small umbrella skirts distributed alternately.

2. A prefabricated equipment terminal as claimed in claim 1, wherein: and the cable core and the wiring terminal are compressed in a mechanical compression joint mode.

3. A prefabricated equipment terminal as claimed in claim 1, wherein: and one end of the insulating sleeve, which is far away from the wiring terminal, is connected with a grounding wire.