CN210985553U

CN210985553U - Cable wall bushing

Info

Publication number: CN210985553U
Application number: CN202020051441.5U
Authority: CN
Inventors: 贺卫东; 杨魏伟
Original assignee: Zhengzhou Special Cable Co ltd
Current assignee: Zhengzhou Special Cable Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-07-10
Anticipated expiration: 2030-01-10

Abstract

The utility model provides a cable wall bushing, arrange including conductive aluminum, conductive aluminum is arranged and is wrapped up in and is equipped with shielding copper layer and polyvinyl chloride cover bag, the symmetry cover is equipped with two flange and two insulator on the polyvinyl chloride cover bag, can dismantle between the flange and connect and all splice with polyvinyl chloride cover bag, the insulator is rather than adjacent flange fixed connection, the one end that deviates from flange on one of them insulator is spliced there is the closing cap, the closing cap can be dismantled and be connected with the gland, it has the packing to seal between closing cap and the gland, the one end that deviates from flange on another insulator is spliced there is the end cover. Compared with the prior art, the novel point that the two sections of porcelain sleeves are connected by the pipe connecting flange is provided, so that a worker can timely and quickly detach the porcelain sleeves during maintenance or failure without damaging each part; this structure uses the mode of sealing filler and sealed cementing to seal along with whole, prevents effectively that dirty or humid air from getting into the sheathed tube inside, stops dirty sudden strain of a muscle phenomenon.

Description

Cable wall bushing

Technical Field

The utility model belongs to the technical field of air conditioning and specifically relates to a cable wall bushing.

Background

The wall bushing can seep water vapor or dirt inside under the condition of poor sealing to cause pollution flashover, wherein the pollution flashover means that soluble substances of pollutants attached to the insulating surface of electrical equipment are gradually dissolved in water under a humid condition to form a layer of conductive film on the insulating surface, so that the insulating level of the insulator is greatly reduced, and a strong discharge phenomenon appears under the action of a power field. The shielding layer is usually wrapped up in on the electrically conductive aluminium row and is being covered, and the shielding layer is punctured, and the inside local of sleeve pipe that corresponds the puncture position generates heat for along with partial discharge's development, the sleeve pipe material worsens, insulating properties descends, generates the oxide on electrically conductive aluminium row, causes the power failure accident, because structural connection is too inseparable after the trouble, demolishs the process difficulty.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming prior art's defect, the utility model aims at providing a cable wall bushing effectively prevents that the intraduct from appearing dirty sudden strain of a muscle to convenient to detach and installation.

The solution is that, a cable wall bushing, including the conductive aluminum row, the conductive aluminum row both ends are fixed to be equipped with the wiring board, characterized by, the conductive aluminum row is wrapped up and equipped with the shielding copper layer, the shielding copper layer is wrapped up and equipped with the polyvinyl chloride cap bag, the polyvinyl chloride cap bag is equipped with two flange connections and two porcelain sleeves symmetrically, two can dismantle between the flange connections and all glue with the polyvinyl chloride cap bag, two porcelain sleeves and its adjacent flange connections are fixed seal connection, one of them porcelain sleeve deviates from the flange connection has glue joint cover set on the polyvinyl chloride cap bag, the cover can dismantle connect with the gland set on the polyvinyl chloride cap bag, fill with the gland packing between gland and the gland, the one end close to the wiring board on the gland is connected with the wiring board seal, another porcelain sleeve deviates from the flange one end glue joint set on the polyvinyl chloride cap bag, and one end of the end cover close to the wiring board is hermetically connected with the wiring board.

Preferably, the sealing cover comprises a first main board sleeved on the polyvinyl chloride sleeve bag, one surface of the first main board is fixedly provided with a first connecting part, the other surface of the first main board is fixedly provided with a lantern ring, and the first connecting part is sleeved on one end of the adjacent porcelain sleeve and is glued with the porcelain sleeve; the gland comprises a second main plate, a pressing table is convexly arranged on one surface of the second main plate and extends into the collar, the sealing packing is positioned between the pressing table and the first main plate, and the first main plate is detachably connected with the second main plate; the end cover includes the third mainboard, and the one side of third mainboard is fixed to be equipped with second connecting portion, the another side is fixed to be equipped with the sealing cover, second connecting portion cover is served and is spliced with the insulator at one of adjacent insulator.

Preferably, the two porcelain sleeves are fixedly sleeved with the silicon-fluorine rubber climbing umbrella skirt.

Preferably, an infrared thermometer is arranged outside the silicon-fluorine rubber climbing umbrella skirt, and a buzzer is connected with a lead of the infrared thermometer.

Preferably, a level gauge arranged along the length direction of the conductive aluminum row is fixedly arranged on the end cover.

Preferably, the length of the shielding copper layer is consistent with that of the conductive aluminum row, the polyvinyl chloride bag completely wraps the shielding copper layer and the conductive aluminum row, and the polyvinyl chloride bag is connected with the wiring board in a sealing mode.

Preferably, all set up jaggedly on the terminal surface on two flange, two breachs form the sled position jointly, still inlay on two flange's the terminal surface and be equipped with the sealing washer, and two sealing washers do not coincide.

The utility model has the advantages that: compared with the prior art, the novel point that the two sections of porcelain sleeves are connected by the pipe connecting flange is provided, so that a worker can timely and quickly detach the porcelain sleeves during maintenance or failure without damaging each part; the structure is integrally sealed by using a sealing filler and a sealing glue joint mode, so that dirty or humid air is effectively prevented from entering the interior of the sleeve, and the pollution flashover phenomenon is avoided; an infrared thermometer is added for real-time monitoring, and the discharge position of the equipment is diagnosed in time so as to avoid the generation of the suspension potential.

Drawings

FIG. 1 is a schematic structural view of the present invention;

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

FIG. 3 is a schematic view of the closure;

FIG. 4 is a schematic structural view of the gland;

fig. 5 is a schematic structural view of the end cap.

Detailed Description

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

As shown in fig. 1-5, a cable wall bushing comprises a conductive aluminum row 1, wherein wiring boards 2 are fixedly arranged at two ends of the conductive aluminum row 1, and is characterized in that a shielding copper layer 3 is wrapped on the conductive aluminum row 1, a polyvinyl chloride bag sleeve 4 is wrapped outside the shielding copper layer 3, the shielding copper layer 3 improves electric field distribution, electric field lines are gathered inside the shielding copper layer 3 to avoid partial discharge between the conductive aluminum row 1 and the polyvinyl chloride bag sleeve 4, the polyvinyl chloride bag sleeve 4 is wrapped outside the shielding copper layer 3 to play an insulating role, two connecting flanges 5 and two porcelain sleeves 6 are symmetrically sleeved on the polyvinyl chloride bag sleeve 4, the porcelain sleeves 6 make internal insulation, the two connecting flanges 5 are detachably connected and are both connected with the polyvinyl chloride bag sleeve 4, the connecting flanges 5 are indirectly fixedly connected with the conductive aluminum row 1 by being connected with the polyvinyl chloride bag sleeve 4, and the connecting flanges 5 can be fixed together by means of screw connection, the two porcelain sleeves 6 are fixedly and hermetically connected with the adjacent connecting flange 5, one end of one porcelain sleeve 6, which is far away from the connecting flange 5, is glued with a sealing cover 8 which is sleeved on the polyvinyl chloride sleeve bag 4, the sealing cover 8 is detachably connected with a gland 9 which is sleeved on the polyvinyl chloride sleeve bag 4, sealing filler 10 is filled between the sealing cover 8 and the gland 9, one end of the gland 9 close to the wiring board 2 is hermetically connected with the wiring board 2, the sealing cover 8 and the gland 9 can also be connected in a screw connection mode, the sealing packing 10 prevents external damp air from entering the porcelain bushing 6 from the space between the sealing cover 8 and the gland 9 or the space between the gland 9 and the wiring board 2, one end of the other porcelain bushing 6 departing from the connecting flange 5 is glued with an end cover 11 sleeved on the polyvinyl chloride sleeve bag 4, the end of the end cover 11 close to the wiring board 2 is hermetically connected with the wiring board 2, and the hermetic connection can be formed by applying a sealing adhesive. The end provided with the gland 9 is an outer phase, the end provided with the end cover 11 is an inner phase, the outer phase is an end facing outdoors, the gland 9, the end cover 11 and the wiring board 2 are in sealing connection, the invasion of moist air at two ends is blocked, the sealing filler 10 prevents the leakage between the gland 9 and the sealing cover 8, and is convenient to disassemble simultaneously, the porcelain sleeve 6 and the sealing cover 8, the porcelain sleeve 6 and the connecting flange 5 and the porcelain sleeve 6 and the end cover 11 are all fixedly glued, and the porcelain sleeve 6 is disassembled together along with the porcelain sleeve 6 when the porcelain sleeve is disassembled, so that the porcelain sleeve is not required to be separated independently; the biggest reason causing pollution flashover is just that it is sealed badly, through the setting of sealing means layer upon layer, arranges 1 safety seal of electrically conductive aluminium in inside, guarantees that external dirty and humid air can not get into the wall bushing inside, reaches the purpose of prevention and cure pollution flashover.

The sealing cover 8 comprises a first main board 81 sleeved on the polyvinyl chloride sleeve bag 4, one surface of the first main board 81 is fixedly provided with a first connecting part 82, the other surface of the first main board 81 is fixedly provided with a lantern ring 83, and the first connecting part 82 is sleeved on one end of the adjacent porcelain sleeve 6 and is glued with the porcelain sleeve 6; the gland 9 comprises a second main plate 91, a pressing platform 92 is convexly arranged on one surface of the second main plate 91, the pressing platform 92 extends into the lantern ring 83, the sealing packing 10 is positioned between the pressing platform 92 and the first main plate 81, and the first main plate 81 is detachably connected with the second main plate 91; the end cover 11 includes a third main board 111, one side of the third main board 111 is fixedly provided with a second connecting portion 112, the other side is fixedly provided with an enclosure 113, and the second connecting portion 112 is sleeved on one end of the adjacent porcelain bushing 6 and is glued with the porcelain bushing 6. The conductive aluminum bar 1 penetrates through the first main board 81, two ends of the conductive aluminum bar are sealed inside by the second main board 91 and the sealing cover 113, the filler between the gland 9 and the sealing cover 8 is filled into the lantern ring 83 in advance, then the pressing platform 92 is pressed into the lantern ring 83, the first main board 81 and the second main board 91 are connected after compaction so as to fix the relative positions of the gland 9 and the sealing cover 8, the sealing filler 10 is prevented from loosening, the first connecting part 82 and the porcelain bushing 6 are fixed after the sealing cover 8 and the gland 9 are fixed, and the axial distance change caused when the gland 9 and the sealing cover 8 are connected is compensated by the coincidence length between the end parts of the first connecting part 82 and the porcelain bushing 6.

The outer of the two porcelain sleeves 6 is fixedly sleeved with a silicon-fluorine rubber climbing umbrella skirt 7. The silicon-fluorine rubber climbing umbrella skirt 7 effectively improves pollution flashover voltage of a heavy pollution area, has excellent corrosion resistance, aging resistance, hydrophobicity and self-cleaning function, is light in weight, and has double protection by the silicon-fluorine rubber climbing umbrella skirt 7 even if the porcelain sleeve 6 is oxidized.

An infrared thermometer is arranged outside the silicon-fluorine rubber climbing umbrella skirt 7, and a buzzer is connected with a lead of the infrared thermometer. For the partial discharge in the equipment, the trend of the discharge size is unpredictable, so timely detection is carried out, the local temperature is increased due to the partial discharge when rain is polluted, and therefore by adopting an infrared detection method, when the temperature of any point on the silicon-fluorine rubber climbing umbrella skirt 7 is detected to exceed a set value, the buzzer alarms, the further deterioration of the suspension discharge is prevented, and the sequential control can be realized through the existing connection technology without being limited by a programmable controller or a single chip microcomputer; in addition, the infrared thermometer is limited in measuring distance and can be matched with an ultrasonic detector to realize detection and renting together.

And a level 12 arranged along the length direction of the conductive aluminum row 1 is fixedly arranged on the end cover 11. When the wall bushing transversely placed, can make the moisture from high-end infiltration flow to the lower extreme and accelerate the regional development of pollution flashover because the installation can not reach the requirement, spirit level 12 helps installer to look for horizontal position when horizontal installation, avoids the wall bushing slope.

The length of the shielding copper layer 3 is consistent with that of the conductive aluminum bar 1, the shielding copper layer 3 and the conductive aluminum bar 1 are completely wrapped by the polyvinyl chloride bag cover 4, and the polyvinyl chloride bag cover 4 is connected with the wiring board 2 in a sealing mode. On wiring board 2 was wrapped up to the both ends of polyvinyl chloride wire, do not expose electrically conductive aluminium and arrange 1 or shielding copper layer 3, when electrically conductive aluminium row 1 circular telegram, both ends electric field distribution diffusion takes place insulation breakdown easily, let polyvinyl chloride cover bag 4 wrap up electrically conductive aluminium completely and arrange 1 both ends, prevent the emergence of this condition, sealing connection prevents that humid air from getting into inside contact electrically conductive aluminium between wiring board 2 and the polyvinyl chloride cover bag 4 and arranges 1 between polyvinyl chloride cover bag 4 and the wiring board 2.

All set up jaggedly on the terminal surface on two flange 5, two breachs form sled position 14 jointly, still inlay on two flange 5's the terminal surface and be equipped with sealing washer 13, and two sealing washers 13 do not coincide. When two flange 5 are dismantled, the detachable connecting piece on flange 5 is dismantled earlier, and pry bar type instrument is utilized to stretch into pry position 14, just can pry flange 5 and polyvinyl chloride open to both sides hard, is convenient for take off flange 5 and insulator 6.

When the utility model is installed, firstly two connecting flanges 5 are sleeved on the conductive aluminum bar 1 wrapped with the shielding copper layer 3 and the polyvinyl chloride sleeve bag 4, the connecting flanges 5 are fixedly connected with the porcelain sleeves 6, then the porcelain sleeves 6, the sealing cover 8 and the end cover 11 are sleeved on the connecting flanges, the end cover 11 and the porcelain sleeves 6 are fixed, thus the internal structure is fixed, then the sealing filler 10 is installed, the sealing cover 8 is connected with the gland 9, and finally the sealing cover 8 is connected with the porcelain sleeves 6; when the connecting flange is detached, all detachable connecting pieces are detached, the connecting flange 5 is pried from the prying position 14, and the pressing cover 9 and the glue on the end cover 11 are brittle and broken under the action of external force, so that the left part and the right part of the two connecting flanges 5 are integrally separated.

The above-mentioned embodiments are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design concept of the present invention should be included in the protection scope defined by the claims of the present invention.

Claims

1. A cable wall bushing comprises a conductive aluminum row (1), wiring boards (2) are fixedly arranged at two ends of the conductive aluminum row (1), and the cable wall bushing is characterized in that a shielding copper layer (3) is wrapped on the conductive aluminum row (1), a polyvinyl chloride sleeve bag (4) is wrapped outside the shielding copper layer (3), two connecting flanges (5) and two porcelain sleeves (6) are symmetrically sleeved on the polyvinyl chloride sleeve bag (4), the two connecting flanges (5) are detachably connected and are glued with the polyvinyl chloride sleeve bag (4), the two porcelain sleeves (6) are fixedly and hermetically connected with the adjacent connecting flanges (5), a sealing cover (8) sleeved on the polyvinyl chloride sleeve bag (4) is glued at one end of one porcelain sleeve (6) deviating from the connecting flange (5), the sealing cover (8) is detachably connected with a gland (9) sleeved on the polyvinyl chloride sleeve bag (4), the sealing packing (10) is filled between the sealing cover (8) and the pressing cover (9), one end of the pressing cover (9) close to the wiring board (2) is connected with the wiring board (2) in a sealing mode, one end of the other porcelain sleeve (6) deviating from the connecting flange (5) is connected with an end cover (11) which is sleeved on the polyvinyl chloride sleeve bag (4) in a gluing mode, and one end of the end cover (11) close to the wiring board (2) is connected with the wiring board (2) in a sealing mode.

2. The cable wall bushing according to claim 1, wherein the cover (8) comprises a first main board (81) sleeved on the polyvinyl chloride sleeve bag (4), one surface of the first main board (81) is fixedly provided with a first connecting portion (82), the other surface of the first main board is fixedly provided with a sleeve ring (83), and the first connecting portion (82) is sleeved on one end of the adjacent porcelain sleeve (6) and is glued with the porcelain sleeve (6); the gland (9) comprises a second main plate (91), one surface of the second main plate (91) is convexly provided with a pressing platform (92), the pressing platform (92) extends into the lantern ring (83), the sealing packing (10) is positioned between the pressing platform (92) and the first main plate (81), and the first main plate (81) is detachably connected with the second main plate (91); end cover (11) include third mainboard (111), and the one side of third mainboard (111) is fixed to be equipped with second connecting portion (112), the another side is fixed to be equipped with and covers (113), second connecting portion (112) cover is held on the one end of adjacent insulator (6) and is glued with insulator (6).

3. The cable wall bushing according to claim 2, wherein the two porcelain sleeves (6) are fixedly sleeved with a silicon-fluorine rubber climbing umbrella skirt (7).

4. The cable wall bushing according to claim 3, wherein an infrared thermometer is arranged outside the silicone-fluorine rubber climbing umbrella skirt (7), and a buzzer is connected to a lead of the infrared thermometer.

5. A cable bushing according to claim 2, wherein the end cap (11) is fixedly provided with a level gauge (12) arranged along the length of the row (1) of electrically conductive aluminum.

6. The cable wall bushing according to claim 1, wherein the length of the shielding copper layer (3) is the same as that of the conductive aluminum row (1), the polyvinyl chloride pocket (4) completely wraps the shielding copper layer (3) and the conductive aluminum row (1), and the polyvinyl chloride pocket (4) is hermetically connected with the wiring board (2).

7. The cable wall bushing according to claim 1, wherein the two connecting flanges (5) are provided with notches on end surfaces thereof, the two notches together form a prying position (14), the two connecting flanges (5) are further provided with sealing rings (13) on end surfaces thereof, and the two sealing rings (13) are not overlapped.