CN210272025U

CN210272025U - Corrosion-resistant high-voltage direct-current sleeve

Info

Publication number: CN210272025U
Application number: CN201920444568.0U
Authority: CN
Inventors: 班源伯
Original assignee: Jiangsu Jin'an Electric Co Ltd
Current assignee: Jiangsu Jin'an Electric Co Ltd
Priority date: 2019-04-03
Filing date: 2019-04-03
Publication date: 2020-04-07
Anticipated expiration: 2029-04-03

Abstract

The utility model relates to the field of direct current transmission engineering equipment, in particular to a corrosion-resistant high-voltage direct current sleeve, which comprises a direct current sleeve body and a sealing sleeve, wherein the direct current sleeve body comprises a sealing insulating sleeve and a high-voltage resistant sleeve, an insulating working medium is filled in a tube cavity of the sealing insulating sleeve, a second anti-corrosion corrugated pipe is sleeved outside the direct current sleeve body, a through hole is arranged at the middle shaft of the upper end surface of the sealing sleeve, a conductive rod penetrates through the through hole, a flange is arranged on the circumference of the through hole, a cover plate is covered on the upper end surface of the sealing sleeve, the cover plate and the sealing sleeve are coaxially arranged, a first anti-corrosion corrugated pipe is sleeved on the part of the conductive rod, which is positioned on the upper side of the cover plate, the direct current sleeve is provided with a plurality of anti-corrosion corrugated pipes, sealing gaskets are arranged on gaps at joints of all, the service life is prolonged.

Description

Corrosion-resistant high-voltage direct-current sleeve

Technical Field

The utility model relates to a direct current transmission engineering equipment field especially relates to a corrosion-resistant high voltage direct current sleeve pipe.

Background

The high-voltage direct-current sleeve is used for a converter transformer in a direct-current transmission project, the running quality performance of the high-voltage direct-current sleeve affects the safety of the whole direct-current transmission project, the currently used direct-current sleeve is mostly coated with an anticorrosive coating to carry out anticorrosive protection on the direct-current sleeve, the anticorrosive effect of the direct-current sleeve is poor, and no protective measures are taken for gaps at joints of all parts.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel corrosion-resistant high voltage direct current sleeve pipe to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a corrosion-resistant high-voltage direct-current sleeve comprises a direct-current sleeve body and a sealing sleeve, wherein the sealing sleeve is hermetically sleeved at two ends of the direct-current sleeve body, the direct-current sleeve body comprises a sealing insulating sleeve and a high-voltage resistant sleeve, the sealing insulating sleeve is positioned on an inner layer, the high-voltage resistant sleeve is positioned on an outer layer, an insulating working medium is filled in a tube cavity of the sealing insulating sleeve, a second anti-corrosion corrugated pipe is sleeved outside the direct-current sleeve body and is coaxially arranged with the direct-current sleeve body, a through hole is formed in the middle shaft of the upper end face of the sealing sleeve, a conducting rod penetrates through the through hole and extends towards the inner cavity of the direct-current sleeve body along the middle shaft of the direct-current sleeve body, a flange is arranged on the circumference of the through hole, a cover plate is covered on the upper end face of the sealing sleeve and is coaxially arranged with the sealing sleeve, The conducting rod cross-under is in the through-hole, and bilateral symmetry's T shape subsider, apron's lower terminal surface are seted up to the up end of apron are seted up and are seted up the circular slot that matches with the flange, the vertical section of circular slot is trapezoidal, the subsider is located the both sides of circular slot, install bolt, apron and seal cartridge pass through bolt fixed connection in the subsider, the upper end opening part of subsider is equipped with the waterproof cover, the part cover that the conducting rod is located the apron upside is equipped with first anticorrosive bellows, the lower terminal surface of apron and seal cartridge's combination department is equipped with first sealed the pad.

Preferably, the upper end of the second anticorrosion corrugated pipe is provided with a T-shaped first protrusion, the lower end face of the pipe wall of the sealing sleeve is provided with a clamping groove matched with the first protrusion, and the first protrusion is hermetically clamped in the clamping groove.

Preferably, a second sealing gasket is arranged at the joint of the lower end of the first anticorrosion corrugated pipe and the cover plate.

Preferably, the outer edge of the first sealing gasket is provided with a slope surface attached to the outer wall of the cover plate.

Preferably, the flange and the sealing sleeve are of an integrated structure, the outer wall of the flange is a slope surface, and the inner wall of the flange is a vertical surface.

Preferably, a pull ring is arranged on the middle shaft of the upper end face of the waterproof cover, and an annular second bulge is arranged on the lower end face of the waterproof cover.

Preferably, the second protrusion is located at the outer edge of the circumference of the upper opening of the settling tank, the outer edge of the circumference of the upper opening of the settling tank is further provided with an annular groove matched with the second protrusion, and the second protrusion is clamped in the annular groove.

The utility model provides a corrosion-resistant high voltage direct current sleeve pipe, beneficial effect lies in: this direct current sleeve pipe is provided with a plurality of anticorrosive bellows, and all is equipped with sealed the pad to the gap of each part junction, carries out all-round sealed protection to the direct current sleeve pipe, effectively improves direct current sleeve pipe's anticorrosive effect, improves life.

Drawings

Fig. 1 is a schematic view of an axial end sealing structure of the present invention;

fig. 2 is an enlarged schematic view of the part a of the present invention.

In the figure: the structure comprises a conductive rod 1, a cover plate 2, a sealing sleeve 3, a sealing insulating sleeve 4, a high-voltage-resistant sleeve 5, a first anticorrosive corrugated pipe 6, a second anticorrosive corrugated pipe 7, a bolt 8, a waterproof cover 9, a first sealing gasket 10, a second sealing gasket 11, a settling tank 12, an insulating working medium 13, a flange 31, a first protrusion 71, a pull ring 91 and a second protrusion 92.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, a corrosion-resistant high-voltage direct-current bushing comprises a direct-current bushing body and a sealing bushing 3, wherein the sealing bushing 3 is hermetically sleeved at two ends of the direct-current bushing body, the direct-current bushing body comprises a sealing insulating bushing 4 and a high-voltage resistant bushing 5, the sealing insulating bushing 4 is positioned at an inner layer, the high-voltage resistant bushing 5 is positioned at an outer layer, an insulating working medium 13 is filled in a tube cavity of the sealing insulating bushing 4, a second corrosion-resistant corrugated tube 7 is sleeved outside the direct-current bushing body, the second corrosion-resistant corrugated tube 7 is coaxially arranged with the direct-current bushing body, a T-shaped first bulge 71 is arranged at the upper end of the second corrosion-resistant corrugated tube 7, a clamping groove matched with the first bulge 71 is formed in the lower end face of the tube wall of the sealing bushing 3, the first bulge 71 is hermetically clamped in the clamping groove, the second corrosion-resistant corrugated, the center shaft of the upper end face of the sealing sleeve 3 is provided with a through hole, a conductive rod 1 is connected in the through hole in a penetrating manner, the conductive rod 1 extends towards the inner cavity of the direct current sleeve body along the center shaft of the direct current sleeve body, a flange 31 is arranged on the circumference of the through hole, the flange 31 and the sealing sleeve 3 are of an integral structure, the outer wall of the flange 31 is a slope surface, the inner wall of the flange 31 is a vertical surface, the flange 31 is arranged to enable the cover plate 2 and the sealing sleeve 3 to be matched more firmly to clamp and fix the conductive rod 1, the upper end face of the sealing sleeve 3 is covered with the cover plate 2, the cover plate 2 and the sealing sleeve 3 are coaxially arranged, the center shaft of the cover plate 2 is also provided with the through hole, the conductive rod 1 is connected in the through hole in a penetrating manner, the upper end face of the cover plate 2 is provided with a T-shaped settlement tank 12 which is bilaterally symmetrical, the lower end face of the, The cover plate 2 is fixedly connected with the sealing sleeve 3 through a bolt 8, a waterproof cover 9 is arranged at an upper end opening of the settling tank 12, the bolt 8 can be protected from being corroded by the waterproof cover 9, a pull ring 91 is arranged at a middle shaft of the upper end surface of the waterproof cover 9, an annular second bulge 92 is arranged at a lower end surface of the waterproof cover 9, the second bulge 92 is positioned at the outer edge of the circumference of the upper end opening of the settling tank 12, a ring groove matched with the second bulge 92 is further formed in the outer edge of the circumference of the upper end opening of the settling tank 12, the second bulge 92 is clamped in the ring groove, the waterproof cover 9 can be taken down through the pull ring 91 when the bolt 8 is installed, the waterproof cover 9 is sealed on the upper end opening of the settling tank 12 after the bolt 8 is fixed, the part, which is positioned at the upper side of the cover plate 2, of the conductive rod 1 is sleeved with a first anticorrosion corrugated pipe 6, a second sealing gasket 11 is arranged at the, the lower terminal surface of apron 2 and seal sleeve 3's combination department is equipped with first sealed the pad 10, and the outer fringe of first sealed pad 10 is provided with the domatic with 2 outer wall laminating of apron, and first sealed pad 10 can seal the combination department of apron 2 and seal sleeve 3, and the domatic design of first sealed pad 10 outer fringe makes moisture can not permeate to the combination department of seal apron 2 and seal sleeve 3.

The working principle is as follows: the utility model is arranged on a transformer box body, a conductive rod 1 connected with a high-voltage coil of a transformer penetrates out of a direct current sleeve body and is connected to a power transmission line, a sealing sleeve 3 is hermetically sleeved at two ends of the direct current sleeve body, an insulating working medium 13 is filled in a tube cavity of the sealing insulating sleeve 4, a second anti-corrosion corrugated pipe 7 is sleeved outside the direct current sleeve body to protect the direct current sleeve body and seal the joint of the direct current sleeve body and the sealing sleeve 3, the upper end of the sealing sleeve 3 is fixedly covered with a cover plate 2 through a bolt 8, the cover plate 2 is matched with the sealing sleeve 3 to more firmly clamp and fix the conductive rod 1, a part of the conductive rod 1 positioned at the upper side of the cover plate 2 is sleeved with a first anti-corrosion corrugated pipe 6, a second sealing gasket 11 is arranged at the joint of the lower end of the first anti-corrosion corrugated pipe 6 and the cover plate 2, the second, the lower terminal surface of apron 2 and seal tube 3's combination department establishes first sealed pad 10, and the first sealed pad 10 seals the combination department of apron 2 and seal tube 3, and this direct current sleeve is provided with a plurality of anticorrosive bellows, and all is equipped with sealed the pad to the gap of each part junction, carries out all-round sealed protection to the direct current sleeve, effectively improves direct current sheathed tube anticorrosive effect, improves life.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A corrosion-resistant high-voltage direct-current sleeve comprises a direct-current sleeve body and a sealing sleeve (3), and is characterized in that the sealing sleeve (3) is hermetically sleeved at two ends of the direct-current sleeve body, the direct-current sleeve body comprises a sealing insulating sleeve (4) and a high-voltage resistant sleeve (5), the sealing insulating sleeve (4) is positioned at an inner layer, the high-voltage resistant sleeve (5) is positioned at an outer layer, an insulating working medium (13) is filled in a tube cavity of the sealing insulating sleeve (4), a second anti-corrosion corrugated tube (7) is sleeved outside the direct-current sleeve body, the second anti-corrosion corrugated tube (7) is coaxially arranged with the direct-current sleeve body, a through hole is formed in the middle shaft of the upper end face of the sealing sleeve (3), a conducting rod (1) penetrates through the through hole, and extends to the inner cavity of the direct-current sleeve body along the middle shaft of the, a flange (31) is arranged on the circumference of the through hole, a cover plate (2) is covered on the upper end face of the sealing sleeve (3), the cover plate (2) and the sealing sleeve (3) are coaxially arranged, a through hole is also formed in the middle shaft of the cover plate (2), a conductive rod (1) is connected in the through hole in a penetrating manner, a T-shaped settling tank (12) which is bilaterally symmetrical is formed in the upper end face of the cover plate (2), a circular groove which is matched with the flange (31) is formed in the lower end face of the cover plate (2), the longitudinal section of the circular groove is trapezoidal, the settling tank (12) is positioned on two sides of the circular groove, a bolt (8) is installed in the settling tank (12), the cover plate (2) is fixedly connected with the sealing sleeve (3) through the bolt (8), a waterproof cover (9) is arranged at an opening at the upper end of the settling tank (12), and a first anticorrosion corrugated pipe (6), and a first sealing gasket (10) is arranged at the joint of the lower end surface of the cover plate (2) and the sealing sleeve (3).

2. The corrosion-resistant high-voltage direct current sleeve pipe according to claim 1, wherein a T-shaped first protrusion (71) is arranged at the upper end of the second corrosion-resistant corrugated pipe (7), a clamping groove matched with the first protrusion (71) is formed in the lower end face of the pipe wall of the sealing sleeve pipe (3), and the first protrusion (71) is clamped in the clamping groove in a sealing mode.

3. A corrosion resistant high voltage dc bushing according to claim 1, characterized in that the joint of the lower end of the first corrosion resistant bellows (6) and the cover plate (2) is provided with a second sealing gasket (11).

4. A corrosion resistant high voltage dc bushing according to claim 1 or 3, wherein the outer edge of the first sealing gasket (10) is provided with a slope that fits the outer wall of the cover plate (2).

5. A corrosion resistant high voltage dc bushing according to claim 1, characterized in that the flange (31) is of one piece construction with the sealing bushing (3), the outer wall of the flange (31) being bevelled and the inner wall being vertical.

6. The corrosion-resistant high voltage direct current bushing according to claim 1, wherein the waterproof cover (9) is provided with a pull ring (91) at a central axis of an upper end surface thereof, and the waterproof cover (9) is provided with a second annular protrusion (92) at a lower end surface thereof.

7. The corrosion-resistant high-voltage direct current bushing according to claim 6, wherein the second protrusion (92) is located at the outer circumferential edge of the upper opening of the settling tank (12), an annular groove matched with the second protrusion (92) is further formed in the outer circumferential edge of the upper opening of the settling tank (12), and the second protrusion (92) is clamped in the annular groove.