CN216819360U

CN216819360U - Protection device for cable intermediate head

Info

Publication number: CN216819360U
Application number: CN202220093828.6U
Authority: CN
Inventors: 王跃斌
Original assignee: Liaoning Shian Electric Power Design Co ltd
Current assignee: Liaoning Shian Electric Power Design Co ltd
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-06-24
Anticipated expiration: 2032-01-14

Abstract

The utility model relates to the field of power cable protection equipment, and discloses a protection device for a cable intermediate joint, which comprises two half-type protection boxes, a connecting plate and two energy release assemblies, wherein the connecting plate is fixedly arranged at two sides of each half-type protection box, the number of the half-type protection boxes is two, the two half-type protection boxes are arranged in an up-down symmetrical manner and are combined into a complete protection box through fasteners on the connecting plate, the energy release assemblies and limiting assemblies are uniformly arranged at the upper part of the upper half-type protection box, the limiting assemblies are symmetrically arranged at two sides of each energy release assembly, and two moving sleeves are arranged in the complete protection box in a sliding manner. The utility model can further limit high-pressure airflow, flame and fragments generated by explosion in the complete protection box through the combined action of the structures such as the movable sleeve, the limiting component, the energy release component and the like, thereby further avoiding the expansion of accidents.

Description

Protection device for cable intermediate head

Technical Field

The utility model relates to the field of power cable protection equipment, in particular to a protection device for a cable intermediate joint.

Background

Due to the defects of the quality and the installation of the middle joint, or due to the effects of dampness, overload and other external forces, the middle joint of the cable is easy to have explosion accidents, and high-pressure airflow, flame and fragments generated by explosion can explode or burn other cables in the cable trench and parallel to the middle joint of the cable.

In the prior art, a protection device is usually arranged outside a cable intermediate joint to strengthen protection, so that the accident rate of the cable intermediate joint in the operating environment can be effectively reduced, the occurrence of cable accidents can be effectively prevented, the occurrence of secondary accidents can be inhibited, but the sealing cover of an energy leakage pipe is not limited, the sealing cover splashes during explosion, part of component fragments can be splashed outwards through the energy leakage pipe, and certain damage risk exists.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a protection device for a cable intermediate joint.

In order to achieve the purpose, the utility model provides the following technical scheme: protection device for cable intermediate head, including half type protection box, connecting plate and discharge can the subassembly, connecting plate fixed mounting makes up into complete protection box, upside for two that the longitudinal symmetry set up and through the fastener on the connecting plate in the both sides of half type protection box, half type protection box's quantity the upper portion of half type protection box evenly is provided with discharge can subassembly and spacing subassembly, and spacing subassembly symmetry sets up in every both sides of discharging can the subassembly, and the inside slidable mounting of complete protection box has the removal cover, removes two that the cover set up for the symmetry.

Preferably, the movable sleeve comprises a first sealing ring, an inner sleeve and outer sleeves, the outer sleeves are assembled with the inner surface of the complete protection box in a sliding mode, the inner sleeves are located on the inner sides of the outer sleeves, a closed structure is arranged between one end, away from each other, of each outer sleeve and the inner sleeve, and the inner sides of the inner sleeves are assembled with the first sealing ring in a sleeved mode.

Preferably, the energy release assembly comprises a sealing cover and an energy release pipe, the energy release pipe is communicated and assembled on the upper portion of the upper side half-type protection box, the energy release pipe is uniformly distributed along the axial direction of the half-type protection box, and the sealing cover is connected to the upper end of the energy release pipe in a covering mode.

Preferably, the number of the energy discharge pipes is at least 3.

Preferably, the limiting assembly comprises a polished rod screw, a connecting ring and an internal thread pipe, the internal thread pipe is fixedly assembled on the upper portion of the upper side half-type protection box, the internal thread pipe is symmetrically arranged on two sides of each energy discharge pipe, the internal thread pipe is assembled with the polished rod screw in a threaded manner, the connecting ring is fixedly installed on two sides of the sealing cover, and the connecting ring is respectively assembled with the corresponding polished rod screw in a sleeved manner.

Preferably, the inner sides of the two ends of the complete protection box are sleeved with second sealing rings.

Preferably, the upper part of the lower half-type protection box is embedded with a sealing strip.

Compared with the prior art, the utility model has the beneficial effects that: this protection device for cable intermediate head through the combined action of removing cover, spacing subassembly and letting out structures such as ability subassembly, can further restrict produced high-pressure draught, flame and the piece of explosion in complete protection box to the expansion of accident has further been avoided.

Drawings

FIG. 1 is a front view of the present invention in a schematic configuration;

FIG. 2 is a schematic cross-sectional view of the structure of the present invention;

FIG. 3 is a schematic cross-sectional view of the structure at the spacing assembly of the present invention;

fig. 4 is a schematic plan view of the structure of the upper half protection case of the present invention.

In the figure: the device comprises a half-type protection box 1, a second sealing ring 2, a limiting assembly 3, a polished rod screw 31, a connecting ring 32, an internal threaded pipe 33, an energy leakage assembly 4, a sealing cover 41, an energy leakage pipe 42, a movable sleeve 5, a first sealing ring 51, an inner sleeve 52, an outer sleeve 53 and a sealing strip 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution: protection device for cable intermediate head, including half type protection box 1, connecting plate 7 with let out ability subassembly 4, connecting plate 7 fixed mounting is in half type protection box 1's both sides, half type protection box 1's quantity just makes up into complete protection box for two that the longitudinal symmetry set up on connecting plate 7, upside half type protection box 1's upper portion evenly is provided with lets out ability subassembly 4 and spacing subassembly 3, half type protection box 1, connecting plate 7 and let out to be able to subassembly 4 be current structure, spacing subassembly 3 symmetry sets up in every both sides of letting out ability subassembly 4, be used for injecing the position of letting out ability subassembly 4, the inside slidable mounting of complete protection box has removal cover 5, remove two that cover 5 set up for the symmetry.

The movable sleeve 5 comprises a first sealing ring 51, an inner sleeve 52 and an outer sleeve 53, the outer sleeve 53 is assembled with the inner surface of the complete protection box in a sliding mode, the inner sleeve 52 is located on the inner side of the outer sleeve 53, a closed structure is formed between one end, away from each other, of the two outer sleeves 53 and the inner sleeve 52, and the first sealing ring 51 is assembled on the inner side of the inner sleeve 52 in a sleeved mode. The gap between the cable and the inner sleeve 52 can be sealed by the first sealing ring 51, and the outer sleeve 53 can slide along the inner surface of the complete protective box.

The energy leakage assembly 4 comprises a sealing cover 41 and an energy leakage pipe 42, the energy leakage pipe 42 is communicated and assembled at the upper part of the upper half-type protection box 1, the energy leakage pipe 42 is uniformly distributed along the axial direction of the half-type protection box 1, the upper end of the energy leakage pipe 42 is covered with the sealing cover 41, and the sealing cover 41 is used for covering the energy leakage pipe 42 at ordinary times to seal the inner space of the complete protection box; the number of the energy discharge pipes 42 is at least 3, and during explosion, one is positioned between the two movable sleeves 5 and is used for discharging energy between the two movable sleeves 5, and the other two are respectively positioned between the movable sleeves 5 and the end part of the complete protection box and are used for discharging energy between the movable sleeves 5 and the end part of the complete protection box.

The limiting assembly 3 comprises a polished rod screw 31, a connecting ring 32 and an internal thread pipe 33, the internal thread pipe 33 is fixedly assembled on the upper part of the upper half type protection box 1, the internal thread pipe 33 is symmetrically arranged on two sides of each energy discharge pipe 42, the internal thread pipe 33 is assembled with the polished rod screw 31 in a threaded manner, the connecting ring 32 is fixedly installed on two sides of the sealing cover 41, the connecting ring 32 is respectively sleeved and assembled with the corresponding polished rod screw 31, the sealing cover 41 can move along the polished rod part of the polished rod screw 31 through the connecting ring 32, and the limiting is carried out through a nut of the polished rod screw 31.

The inner sides of the two ends of the complete protection box are sleeved with second sealing rings 2. Can promote the leakproofness between complete protection box both ends and cable through second sealing washer 2, the upper portion of downside half type protection box 1 has inlayed and has connect sealing strip 6, and the upper surface of sealing strip 6 is higher than 2 millimeters at least of the upper surface of downside half type protection box 1 to when two half type protection boxes 1 combinations about, promote the leakproofness of binding face, keep apart external environment.

One specific application of the utility model is:

when in use, the first sealing ring 51 and the second sealing ring 2 are sleeved on a cable, and the first sealing ring 51 is sleeved with the integrated inner sleeve 52 and outer sleeve 53 after the distance is adjusted; after the cables are butted through the middle joints of the cables, the upper half-type protection boxes 1 and the lower half-type protection boxes 1 are combined into a complete protection box through fasteners on the connecting plates 7, at the moment, the two ends of the complete protection box tightly press the second sealing rings 2, the inner surface of the complete protection box is attached to the outer sleeve 53, colloid is injected into the inner cavity of the complete protection box between the two movable sleeves 5 through the middle energy discharge pipe 42, and the middle joints are sealed; through the screw connection of the screw rod 31 and the internal thread pipe 33 in the limiting component 3, the sealing cover 41 is covered on the energy discharge pipe 42 through the connecting ring 32, and the sealing cover 41 and the energy discharge pipe 42 are assembled in an interference fit manner; during explosion, the two movable sleeves 5 are away from each other due to high pressure, the space between the two movable sleeves 5 is increased, so that the pressure of gas released outwards is reduced, meanwhile, the sealing cover 41 is bounced off due to residual high pressure to perform energy discharge, the sealing cover 41 is limited on the polished rod screw 31 to avoid splashing, and the blocking energy discharge pipe 42 is used for avoiding the part debris from splashing outwards.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. Protection device for cable intermediate head, including half type protection box (1), connecting plate (7) and let out ability subassembly (4), connecting plate (7) fixed mounting is in the both sides of half type protection box (1), and the quantity of half type protection box (1) is two that the longitudinal symmetry set up and makes up into complete protection box, its characterized in that through the fastener on connecting plate (7): upside the upper portion of half type protection box (1) evenly is provided with lets out can subassembly (4) and spacing subassembly (3), and spacing subassembly (3) symmetry sets up in every both sides of letting out can subassembly (4), and the inside slidable mounting of complete protection box has removal cover (5), removes two that cover (5) set up for the symmetry.

2. The protection device for a cable intermediate joint according to claim 1, characterized in that: the movable sleeve (5) comprises a first sealing ring (51), an inner sleeve (52) and an outer sleeve (53), the outer sleeve (53) is assembled with the inner surface of the complete protection box in a sliding mode, the inner sleeve (52) is located on the inner side of the outer sleeve (53), a closed structure is arranged between one end, far away from each other, of the two outer sleeves (53) and the inner sleeve (52), and the first sealing ring (51) is assembled on the inner side of the inner sleeve (52) in a sleeved mode.

3. The protection device for a cable intermediate joint according to claim 1, characterized in that: let out can subassembly (4) including closing cap (41) and let out can pipe (42), let out can pipe (42) intercommunication assembly on the upper portion of upside half type protection box (1), let out can pipe (42) along the axial evenly distributed of half type protection box (1), let out the upper end lid of can pipe (42) and connect closing cap (41).

4. A cable intermediate joint protection device according to claim 3, characterized in that: the number of the energy discharge pipes (42) is at least 3.

5. A cable intermediate joint protection device according to claim 3, characterized in that: spacing subassembly (3) include polished rod screw (31), go-between (32) and internal thread pipe (33), internal thread pipe (33) fixed assembly is on the upper portion of upside half type protection box (1), internal thread pipe (33) symmetry sets up the both sides in every can of letting out pipe (42), internal thread pipe (33) and polished rod screw (31) spiro union assembly, the both sides fixed mounting of closing cap (41) has go-between (32), go-between (32) cup joint the assembly with corresponding polished rod screw (31) respectively.

6. The protection device for a cable intermediate joint according to claim 1, characterized in that: and the inner sides of the two ends of the complete protection box are sleeved with second sealing rings (2).

7. The protection device for a cable intermediate joint according to claim 1, characterized in that: the upper part of the lower half-type protection box (1) is embedded with a sealing strip (6).