CN210136771U - Alternating current sleeve structure - Google Patents
Alternating current sleeve structure Download PDFInfo
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- CN210136771U CN210136771U CN201921118345.1U CN201921118345U CN210136771U CN 210136771 U CN210136771 U CN 210136771U CN 201921118345 U CN201921118345 U CN 201921118345U CN 210136771 U CN210136771 U CN 210136771U
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- elastic plate
- nut
- conductive
- single round
- head
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- 238000007789 sealing Methods 0.000 claims description 56
- 238000003825 pressing Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 4
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model discloses an exchange sleeve structure, including the contact tube, with contact tube head threaded connection's conductive head, apron and install elastic plate and clamping ring above the apron in proper order, the contact tube stretches out the apron, clamping ring and elastic plate are the ring form, the folding wave structure that forms of the outside circle direction of inner circle of elastic plate, the inner circle diameter and the contact tube diameter of elastic plate are unanimous, the clamping ring passes through bolt and apron fixed connection and pushes down the outer lane of elastic plate and the planar part between the wave structure, the fluting that the symmetry set up is seted up to the both sides of conductive head, set up the through-hole that runs through the conductive head wall thickness on the grooved side, nut and screw have been worn on the through-hole. The utility model discloses a screw and nut will lead electrical head and conductive tube locking, can get rid of the influence of the stress of in service drainage generating line and main vibration to threaded connection compactness, avoid leading electrical head and conductive tube connection screw thread contact failure.
Description
Technical Field
The utility model relates to a high-pressure maintenance equipment technique, concretely relates to exchange sleeve structure.
Background
As shown in fig. 1, the head of the oil-immersed alternating current bushing mainly comprises a bushing current-carrying structure which is a guide rod type current-carrying structure, the head of the oil-immersed alternating current bushing is a conductive head 200, the conductive head 200 is screwed with the conductive pipe 100 in a threaded manner for carrying current, a split wiring board is arranged on the upper portion of the conductive head 200, and the conductive head 200 designed on the top of the bushing mainly plays a role in preventing rainwater and moisture from entering from the top of the bushing. However, the thermal expansion problem of the contact tube needs to be considered in the partial structure, and the original elastic plate 300 mainly functions to perform shaft sealing on the contact tube 100 at the top of the sleeve and leave a certain thermal expansion and cold contraction margin for the contact tube 100. Because the relative displacement with the sleeve jacket caused by the expansion and contraction of the sleeve conductive pipe 100 can only occur at the top of the cover plate 500, after the conductive head 200 expands due to the temperature rise of the conductive pipe 100 (the coefficient of thermal expansion of the conductive pipe 100 is greater than that of a porcelain), a gap is generated between the lower brim and a transition plate on the cover plate 500, so that the thread contact force is reduced, and the conductive head 200 is loosened. After the sleeve is installed on site, a certain included angle is formed between the lead and the sleeve, so that the conductive head 200 is acted by a lateral force, and meanwhile, wind power and converter transformer vibration are also acted on the loosened conductive head 200, so that the contact resistance of the threads contacted by gravity under a static state is increased, and the threads are heated under the action of load current, thereby causing a series of problems.
SUMMERY OF THE UTILITY MODEL
To the not enough of prior art, the utility model provides an exchange sleeve structure.
In order to achieve the above purpose, the technical scheme of the utility model is that:
the utility model provides an exchange bushing structure, includes the contact tube, with contact tube head threaded connection's conductive head, apron and install elastic plate and clamping ring above the apron in proper order, the contact tube stretches out the apron, clamping ring and elastic plate are the ring form, the outside folding wave structure that forms of circle direction of inner circle of elastic plate, the inner circle diameter and the contact tube diameter of elastic plate are unanimous, the clamping ring passes through bolt and apron fixed connection and pushes down the outer lane of elastic plate and the plane part between the wave structure, the fluting that the symmetry set up is seted up to the both sides of conductive head, set up the through-hole that runs through the conductive head on the grooved side, nut and screw have worn on the through-hole.
The elastic plate is provided with a first single round sealing nut and a fixing nut, the first single round sealing nut and the fixing nut are arranged below the elastic plate and abut against each other to form a double-nut structure, and the top surface of the first single round sealing nut abuts against the bottom surface of the elastic plate.
Furthermore, a second single round sealing nut is arranged above the elastic plate, and the bottom surface of the second single round sealing nut abuts against the top surface of the elastic plate.
Furthermore, the elastic plate and the first single round nut and the conductive tube are connected at a position where a first triangular sealing ring is clamped, and the elastic plate and the second single round nut and the conductive tube are connected at a position where a second triangular sealing ring is clamped.
Furthermore, a sealing gasket is clamped between the elastic plate and the cover plate, and a groove for placing the sealing gasket is formed in the top surface of the cover plate.
Furthermore, a water drainage groove is formed in the bottom surface of the pressing ring.
Compared with the prior art, the utility model, have following advantage:
the conductive head and the conductive tube are locked through the screw and the nut, the influence of stress and main transformer vibration of a drainage bus in operation on the tightness of threaded connection can be eliminated, poor contact of the conductive head and the conductive tube with connecting threads is avoided, meanwhile, the triangular sealing ring and the sealing washer are used for sealing the connecting part of the conductive head and the conductive tube, the waterproof performance is good, when the rain is stopped, because the temperature of the conductive tube of the sleeve is higher than that of the environment, a small amount of water around the conductive tube can be evaporated quickly, and the sealing of the structure cannot be influenced.
Drawings
FIG. 1 is a schematic cross-sectional view of an original structure of an AC bushing structure;
FIG. 2 is a schematic cross-sectional structural view of an AC bushing structure of the present application;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2;
description of reference numerals: 1. a conductive tube; 2. a conductive head; 21. grooving; 22. a screw; 3. an elastic plate; 31. a wave structure; 4. pressing a ring; 41. a water drainage tank; 5. a cover plate; 61. a first single seal round nut; 62. a second single seal round nut; 63. fixing a nut; 71. a first triangular sealing ring; 72. a second triangular sealing ring; 73. a sealing gasket;
100. a conductive tube; 200. a conductive head; 300. an elastic plate; 500. and (7) a cover plate.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Examples
As shown in fig. 2 and 3, an ac bushing structure includes a conductive tube 1, a conductive head 2 screwed to the head of the conductive tube 1, a cover plate 5, and an elastic plate 3 and a pressing ring 4 sequentially installed above the cover plate 5 to close the top of the cover plate 5 and prevent water from flowing into the interior.
The conductive head 2 adopts a half structure, namely, notches 21 which are symmetrically arranged are formed in the symmetrical positions of the two sides of the conductive head 2, through holes penetrating through the conductive head 2 are formed in the side faces of the two notches 21, and 2 through holes are formed in one side of each notch, so that the number of the through holes is 4. When the conductive head 2 is in threaded connection with the conductive tube 1, the screw 22 and the nut are arranged on the through hole, so that the conductive head 2 clamps the conductive tube 1, the conductive head 2 and the conductive tube 1 can be kept fixed even if the temperature of the conductive tube 1 rises and expands to generate a gap, and the conductive head 2 and the conductive tube 1 cannot rotate and fall off easily due to looseness.
Pressing ring 4 and elastic plate 3 are the shape of ring, the inner circle of elastic plate 3 forms round wave structure 31 to the folding outer lane direction, the inner circle diameter of elastic plate 3 is unanimous with the 1 diameter of current-conducting tube, the outer lane diameter of elastic plate 3 is unanimous with the outer lane diameter of pressing ring 4, pressing ring 4 and elastic plate 3 pass through bolt and 5 fixed connection of apron, and pressing ring 4 pushes down the outer lane of elastic plate 3 and the plane part between the wave structure 31, thereby seal closure tentatively to the top of apron 5.
A first single round sealing nut 61 and a fixing nut 63 are additionally arranged below the elastic plate 3, the fixing nut 63 is arranged below the first single round sealing nut 61 to limit the position of the first single round sealing nut 61, the bottom surface of the first single round sealing nut 61 abuts against the top surface of the fixing nut 63, the top surface of the first single round sealing nut 61 abuts against the bottom surface of the elastic plate 3, and further the bottom of the elastic plate 3 is supported; and a second single round sealing nut 62 is additionally arranged above the elastic plate 3, the bottom surface of the second single round sealing nut 62 abuts against the top surface of the elastic plate 3, a placing groove for placing the wavy structure 31 is reserved, and the position of the top surface of the second single round sealing nut 62 after installation is the same as that of the top surface of the pressing ring 4 so as to ensure the flatness of the upper end surface.
The elastic plate 3 and the first single round nut 61 and the conductive tube 1 are connected at a position to clamp a first triangular sealing ring 71, and the elastic plate 3 and the second single round nut 62 and the conductive tube 1 are connected at a position to clamp a second triangular sealing ring 72. Sealing washer 73 still presss from both sides between elastic plate 3 and the apron 5, and the recess that is used for placing sealing washer 73 is seted up to the top surface of apron 5 to further strengthen the leakproofness of apron 5 top surface through foretell sealing washer. In order to enhance the sealing performance of the triangular sealing ring, a polytetrafluoroethylene tape can be wound on the connecting part of the elastic plate 3 and the conductive pipe 1 before the triangular sealing ring is placed, and the polytetrafluoroethylene tape has good sealing performance and corrosion resistance and is used in combination with the triangular sealing ring, so that the whole service life can be effectively maintained.
The bottom surface of the pressing ring 4 is provided with 4 drainage grooves 41, the drainage grooves 41 are arranged around the circumference of the conductive tube 1, the drainage grooves 41 penetrate through the inner side surface and the outer side surface of the pressing ring 4 and are communicated to the wave structure 31 of the elastic plate 3, and the drainage grooves are mainly used for draining rainwater flowing in from the joint of the cover plates 5 in rainy days. When raining, the water at the position of the elastic plate 3 exceeding the height of the wave structure 31 of the elastic plate 3 flows out from the 4 water drainage grooves 41, and when the raining stops, a small amount of water at the position of the elastic plate 3 is evaporated quickly because the temperature of the conductive pipe 1 is higher than that of the environment, so that good sealing performance is kept.
Specifically, during installation, firstly, a fixing nut 63 is screwed in from the top end of a conductive tube 1, then a first single round sealing nut 61 is screwed to be tightly close to the fixing nut 63, the upper end face of the first single round sealing nut 61 is enabled to be flush with the upper end face of a cover plate 5, then a first triangular sealing ring 71 is placed in a sealing groove of the first single round sealing nut 61, a sealing washer 73 is placed in a groove of the cover plate 5, then an elastic plate 3 is placed in the groove of the cover plate 5, a pressing ring 4 is covered on the elastic plate 3 after the position is adjusted, the sealing washer 73 is pressed in the groove of the cover plate 5 by using a bolt for positioning, a polytetrafluoroethylene tape is placed at the joint of the conductive tube 1 on the elastic plate 3, a second triangular sealing ring 72 is placed in the groove, the second single round sealing nut 62 is screwed in for pressing, finally, a conductive head 2 with a half structure is screwed in, after the internal thread of the conductive head 2 is screwed with the external thread of the conductive tube 1, the, the installation can be completed.
Exchange sleeve pipe top structure after the installation, will lead electrical head and conductive tube locking through screw and nut, can get rid of the influence of the stress of drainage generating line and main vibration to the tight degree of threaded connection in the operation, avoid conductive head and conductive tube connecting thread contact failure, simultaneously through the single round nut that seals of multilayer, triangle sealing washer and seal ring seal its coupling part, have fine waterproof performance, because sleeve pipe conductive tube self temperature is higher when the rain stops, a small amount of water will evaporate soon around it, can not exert an influence to waterproof construction's sealed production.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (6)
1. An alternating current bushing structure, characterized by: comprises a conductive tube (1), a conductive head (2) in threaded connection with the head of the conductive tube (1), a cover plate (5), an elastic plate (3) and a pressing ring (4) which are sequentially arranged above the cover plate (5), the conductive tube (1) extends out of the cover plate (5), the pressing ring (4) and the elastic plate (3) are both circular, the inner ring of the elastic plate (3) is folded towards the outer ring direction to form a wave structure (31), the diameter of the inner ring of the elastic plate (3) is consistent with that of the conductive tube (1), the pressing ring (4) is fixedly connected with the cover plate (5) through a bolt and presses the plane part between the outer ring of the elastic plate (3) and the wave structure (31), two sides of the conductive head (2) are provided with symmetrically arranged slots (21), and a through hole penetrating through the conductive head (2) is formed in the side surface of the open groove (21), and a nut and a screw (22) are penetrated through the through hole.
2. The ac bushing structure of claim 1, wherein: the elastic plate is characterized by further comprising a first single round sealing nut (61) and a fixing nut (63), wherein the first single round sealing nut (61) and the fixing nut (63) are arranged below the elastic plate (3), the fixing nut (63) is located below the first single round sealing nut (61), the first single round sealing nut (61) is abutted to the fixing nut (63) to form a double-nut structure, and the top surface of the first single round sealing nut (61) is abutted to the bottom surface of the elastic plate (3).
3. The ac bushing structure of claim 2, wherein: a second single round sealing nut (62) is further arranged above the elastic plate (3), and the bottom surface of the second single round sealing nut (62) abuts against the top surface of the elastic plate (3).
4. The ac bushing structure of claim 3, wherein: elastic plate (3) and the hookup location department of first single round nut (61) and electric tube (1) of sealing accompany first triangle sealing washer (71), elastic plate (3) and the hookup location department of second single round nut (62) and electric tube (1) accompany second triangle sealing washer (72).
5. The ac bushing structure of claim 1, wherein: still accompany seal ring between elastic plate (3) and apron (5), the recess that is used for placing seal ring is seted up to the top surface of apron (5).
6. The ac bushing structure of claim 1, wherein: and a water drainage groove (41) is formed in the bottom surface of the pressing ring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921118345.1U CN210136771U (en) | 2019-07-16 | 2019-07-16 | Alternating current sleeve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921118345.1U CN210136771U (en) | 2019-07-16 | 2019-07-16 | Alternating current sleeve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210136771U true CN210136771U (en) | 2020-03-10 |
Family
ID=69708735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921118345.1U Active CN210136771U (en) | 2019-07-16 | 2019-07-16 | Alternating current sleeve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210136771U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110444378A (en) * | 2019-07-16 | 2019-11-12 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of exchange cannula structure |
-
2019
- 2019-07-16 CN CN201921118345.1U patent/CN210136771U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110444378A (en) * | 2019-07-16 | 2019-11-12 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of exchange cannula structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 223 Science Avenue, Guangzhou Science City, Luogang District, Guangzhou City, Guangdong Province, 510663 Patentee after: China Southern Power Grid Corporation Ultra High Voltage Transmission Company Electric Power Research Institute Country or region after: China Address before: No. 223 Science Avenue, Guangzhou Science City, Luogang District, Guangzhou City, Guangdong Province, 510663 Patentee before: MAINTENANCE & TEST CENTRE, CSG EHV POWER TRANSMISSION Co. Country or region before: China |
|
| CP03 | Change of name, title or address |