CN214280852U - Corrugated connector for enclosed bus pipeline - Google Patents
Corrugated connector for enclosed bus pipeline Download PDFInfo
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- CN214280852U CN214280852U CN202120312319.3U CN202120312319U CN214280852U CN 214280852 U CN214280852 U CN 214280852U CN 202120312319 U CN202120312319 U CN 202120312319U CN 214280852 U CN214280852 U CN 214280852U
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- corrugated pipe
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Abstract
The utility model relates to a power plant seals corrugated connector for generating line pipeline, including metal bellows subassembly, last connecting piece and lower connecting piece. By arranging the radial movable corrugated structure, the radial deviation of the pipeline can be compensated, and reliable connection is realized; the insulating isolation layer is arranged on the corrugated structure, so that the two ends of the corrugated connector can be insulated and isolated; meanwhile, the telescopic rod has the characteristics of simple structure, good flexibility, convenience in disassembly and assembly, safety, reliability, attractive appearance, long service life and the like, and meets the use requirements.
Description
Technical Field
The utility model relates to a corrugated connector for enclosed bus pipeline is applicable to the insulating connection of power plant power take off end enclosed bus protection pipeline, especially relates to enclosed bus and transformer junction protection pipeline's flexonics.
Background
The enclosed bus of the power output end of the large generator adopts an aluminum protective cover, a pipeline of the outer shell of the protective cover needs connectors, and the existing connectors are of two types, namely rubber type and aluminum sleeve type. Because rubber formula and aluminium cover formula connector structure are heavy, cause the dismouting working strength when enclosed bus maintenance and maintenance big, the process is loaded down with trivial details, and the dismouting is once consuming time longer. Moreover, the existing structure is dustproof and has poor rainproof effect, the elasticity of the rubber connector is poor, the equipment is difficult to disassemble and assemble, aging and cracking exist for a long time, and the safety and the service life of the system are influenced. Due to the poor flexibility, the rubber or aluminium jacket connectors must be mounted when the transformer is displaced.
The metal corrugated pipe is an advanced element for flexible connection of pipelines, and can solve the problem of flexible connection of sealed pipelines. However, when the metal corrugated pipe is used for connecting a closed bus pipe, the problem of insulation and isolation must be solved, namely, two ends to be connected need insulation and isolation, meanwhile, the corrugated pipe material must be non-magnetic conductive material, and the magnetic conductivity after the corrugated pipe is formed and hardened must be eliminated. In addition, for the joint of the closed bus and the transformer, because the flexible connecting bus is arranged, the gap between the upper and lower conducting bars is small, the corrugated connector is placed from the joint and must be pressed into a short size, and then the corrugated connector is unfolded into a long size, so the connector must have large space flexibility, which cannot be realized by the conventional corrugated connector at present.
In addition, the conventional corrugated pipe can only compensate axial and angular deviations, but cannot compensate the radial deviation within a short distance, because the original bus outer protective sleeve is usually subjected to sinking and other factors due to equipment foundation and the like, the sleeve to be connected is seriously radially dislocated. Therefore, the corrugated connector which can simultaneously realize radial deviation compensation and can axially expand and contract becomes a technical difficulty to be solved urgently.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a corrugated connector for closed bus duct, this corrugated connector can solve even the radial dislocation of pipe, realizes connecting both sides insulation simultaneously and keeps apart, has characteristics such as simple structure, the elasticity is good, the dismouting is convenient, safe and reliable, the appearance is pleasing to the eye, satisfy operation requirement, long service life.
For solving the above problems, the specific technical scheme of the utility model is as follows: a corrugated connector for a closed bus pipeline comprises an upper connecting piece, a corrugated pipe assembly and a lower connecting piece, wherein the corrugated pipe assembly is formed by connecting a plurality of corrugated pipes, the wave crest of at least one corrugated pipe and the wave crest of an adjacent corrugated pipe are overlapped inside and outside the same diameter, a gap capable of moving in the radial direction is arranged at the overlapping position of an outer corrugated pipe and an inner corrugated pipe, namely any cross section of the overlapping position, and the radial size of the outer corrugated pipe and the radial size difference of the inner corrugated pipe form the radial movement amount.
The corrugated pipe assembly consists of radial moving corrugated pipes and axial telescopic corrugated pipes, wherein the radial moving corrugated pipes are radial moving waves with at least one wave crest, and the radial momentum L of each radial moving corrugated pipe0Total radial movement L = number of radially moving bellows × L0(ii) a The axial telescopic corrugated pipe is one or more sections.
The corrugated connector is provided with at least one insulating spacer; the insulating isolation piece is positioned between the wave crest interlayers overlapped by the corrugated pipe assembly, and/or the insulating isolation piece is positioned at the joint of the corrugated pipe assembly and the upper connecting piece, and/or the insulating isolation piece is positioned at the joint of the corrugated pipe assembly and the lower connecting piece.
The upper connecting piece consists of a flange and a transition cylinder, one end of the transition cylinder is connected with the flange, and the other end of the transition cylinder is connected with the corrugated pipe assembly.
The lower connecting piece consists of a flange and a transition cylinder, one end of the transition cylinder is connected with the flange, and the other end of the transition cylinder is connected with the corrugated pipe assembly.
The end part of the transition cylinder is provided with an L-shaped turned edge, the cylindrical surface of the transition cylinder is positioned in the inner hole of the flange, and the L-shaped turned edge is attached to the outer end surface of the flange.
The upper connecting piece is arranged between the head wave and the second wave of the corrugated pipe assembly and flattens the head wave of the corrugated pipe into a flat structure.
And a waterproof vertical edge of 40-80 mm extends along the direction of the bus on the head wave.
The upper connecting piece is provided with a clamping groove, a fastening clamp is clamped on the clamping groove, and the fastening clamp fastens the upper connecting piece and the external flange.
The upper connecting piece is provided with a connecting through hole, and the external flange is connected with the through hole on the upper connecting piece through a bolt.
The corrugated connector corrugated pipe assembly for the closed bus pipe is provided with at least one corrugated wave crest which is two layers, wherein the outer diameter of the wave crest of the outer layer corrugation is larger than that of the wave crest of the inner layer corrugation, so that the outer layer part and the inner layer wave crest can move in the radial direction, and the movement amount is equal to the clearance between two overlapped wave crests.
The corrugated pipe assembly consists of a plurality of sections of radial movable corrugated pipes and a single axial telescopic corrugated pipe, and the movement amount of each wave of the plurality of sections of radial movable corrugated pipes is L0Total movement L = number of radially moving bellows × L0And large radial deviation compensation can be realized. The single axial telescopic corrugated pipe can be composed of one or more sections of corrugated pipes; the corrugated pipe and the corrugated pipe are connected through an overlapped wave crest, and an insulating spacer is arranged at the position where the wave crests overlap, so that insulating isolation can be realized, and the design requirement is met.
This corrugated connector for enclosed bus duct adopts the junction to set up the structure of an at least insulating barrier spare, has realized being connected the insulating isolation of both sides barrel, satisfies the equipment standard, has reached the operation requirement of enclosed bus connector, and the dismouting is convenient simultaneously, safe and reliable, long service life. The corrugated pipe assembly needs to be long enough, needs to adopt a plurality of groups of corrugated pipes, can be provided with insulating spacers at the overlapping positions of the corrugated pipes, and can realize the function of insulating two ends. The upper connecting piece or the lower connecting piece adopts a flange and transition cylinder structure, and an insulating isolating piece is arranged at the joint of the transition cylinder and the corrugated pipe assembly, so that the function of insulating two ends can be realized.
Transition section of thick bamboo tip sets up the structure that L shape turned over the edge, and a transition section of thick bamboo does not weld with the flange promptly, can realize the flange rotation in the installation, and the bolt hole of being convenient for is adjusted well, and L shape turns over the edge simultaneously and also can play sealed effect.
When the head wave and the second wave of the corrugated pipe are formed, the connecting flange is arranged in the corrugated pipe and is flattened to be used as a sealing surface, so that the rotation of the connecting flange can be realized, and the corrugated pipe is convenient to install.
The bellows extends waterproof stile along the generating line direction on the head wave, and waterproof stile stretches into can realize rain-proof water in the outside flange to the rubber packing of reducible flange junction.
The upper connecting piece is provided with a clamping groove, and the fastening clamp is mounted and connected on the clamping groove, so that quick mounting can be realized, and the mounting efficiency is improved; or a connecting through hole can be directly processed on the upper connecting piece and connected with an external through hole by using a bolt.
Drawings
Fig. 1 is a schematic view of a corrugated connector for enclosed busbar piping according to example 1.
Fig. 2 is a schematic view of the radial displacement of the corrugated connector for enclosed busbar piping of example 1.
Fig. 3 is a partial enlarged view of fig. 1 at II.
Fig. 4 is a partial enlarged view of fig. 1 at I.
FIG. 5 is a schematic view showing the structure of a corrugated connector for enclosed busbar piping according to example 2.
Fig. 6 is a partial enlarged view of fig. 5 at III.
Fig. 7 is a partial enlarged view of fig. 5 at IV.
FIG. 8 is a schematic view of the corrugated connector for enclosed busbar piping according to example 3.
Fig. 9 is a partial enlarged view of fig. 8 at V.
Fig. 10 is another embodiment of a partial enlarged view at V in fig. 8.
Wherein: 1-upper connecting piece, 2-corrugated pipe assembly, 3-lower connecting piece, 4-insulating isolation piece, 5-fastening clip, 11-flange, 12-transition cylinder, 121-L-shaped turning edge, 21-radial moving corrugated pipe, 211-corrugated pipe head wave, 212-waterproof vertical edge, and 22-axial telescopic corrugated pipe.
Detailed Description
Example 1
As shown in figure 1, the corrugated connector for enclosed bus duct comprises an upper connecting piece 1, a corrugated pipe assembly 2, a lower connecting piece 3 and an insulating partitionAway from the piece 4. The corrugated pipe assembly 2 consists of a plurality of sections of radial moving corrugated pipes 21 and a single axial telescopic corrugated pipe 22, the sections of radial moving corrugated pipes 21 are overlapped end to end, and each section of corrugated pipe is used as an inner layer of the previous section and an outer layer of the next section of corrugated pipe; two adjacent radial movement corrugated pipes 21 are only overlapped at the wave crest, a gap capable of moving radially is arranged at the overlapping position of the outer layer corrugated pipe and the inner layer corrugated pipe, and the outer diameter of the wave crest of the outer layer corrugated pipe is larger than that of the wave crest of the inner layer corrugated pipe, so that the radial momentum L of each radial movement corrugated pipe 21 is realized0= difference in radius between inner and outer layers, total amount of radial movement L = number × L of radially-moving bellows 210As shown in fig. 2.
The corrugated pipe component 2 is made of austenitic stainless steel 304 plates with the plate thickness of less than or equal to 0.5mm, a flat plate winding drum is welded firstly, then the corrugation is formed through expanding equipment, the outer layer is formed on two overlapped wave crests firstly, and then the inner layer is formed through inserting and overlapping. Wherein the outer diameter of the outer layer wave crest is larger than the outer diameter of the inner layer wave crest when the outer layer wave crest is formed. When the radially movable bellows 21 and the single axially extendable bellows 22 are connected to each other, the crests and/or troughs of some of the corrugations are overlapped, and the annular insulating spacer 4 is provided at the overlapping portion of the corrugations, as shown in fig. 3, the insulating spacer 4 is made of a resin material having good tensile properties and durability.
Go up connecting piece 1 structure: as shown in fig. 4, in this embodiment, the upper connecting member 1 is made of only the flange 11, the flange 11 is disposed between the first wave 211 and the second wave at the upper end when the corrugated tube 21 is radially moved to expand, the first wave 211 of the corrugated tube 21 is radially moved to a position 3-5 mm away from the connecting hole of the flange 11, the first wave 211 is compressed, the flange 11 can rotate in the corrugation of the corrugated tube 21, and the second wave of the corrugated tube 21 can be a corrugation with a smaller wave peak, so that the wave peak avoids the flange hole.
The structure of the lower connecting piece 3 is as follows: the lower connecting piece adopts a thick-walled ring welded at the end of the corrugated pipe at the bottom in a seam mode and is connected with the lower cylinder body through a bolt; or the flange can be directly connected with the lower cylinder flange.
In the embodiment 1, the technical scheme that the insulating spacer 4 is arranged at one position of the corrugated connection part of the radial moving corrugated pipe 21 and the axial telescopic corrugated pipe 22 is adopted.
Example 2
As shown in fig. 5, the corrugated connector for enclosed bus duct includes an upper connector 1, a bellows assembly 2, a lower connector 3, and an insulating spacer 4. The bellows assembly 2 is composed of a plurality of radially movable bellows 21 and a single axially telescopic bellows 22, and has the same structure as the bellows assembly 2 of embodiment 1, but no insulating spacer 4 is arranged in the bellows assembly 2.
Go up connecting piece 1 structure: as shown in fig. 6, in this embodiment, the upper connecting member 1 is made of only the flange 11, the upper flange 11 is disposed between the first wave 211 and the second wave at one end when the radially moving corrugated pipe 21 is expanded, the flange 11 may be designed to have a structure without a bolt hole but with a clamping groove at an edge, and the clamping groove is clamped with the fastening clamp 5, so as to realize the function of fast fastening of flange connection. The head wave 211 of the corrugated pipe assembly 21 is flattened into a flat structure, and a waterproof vertical edge 212 with a straight edge of 50-80 mm is reserved on the head wave 211 along the bus direction.
The structure of the lower connecting piece 3 is as follows: the lower connecting piece 3 is composed of a flange 11 and a transition cylinder 12, one end of the transition cylinder 12 is connected with the flange 11, the other end of the transition cylinder is connected with an axial telescopic corrugated pipe 22 through an insulating isolation piece 4, and as shown in figure 7, the insulating isolation piece 4 is made of a polytetrafluoroethylene ring with the thickness of 6-20 mm.
In the embodiment 2, the insulating spacer 4 is located at the joint of the axially telescopic bellows 22 and the lower connecting member 3.
Example 3
As shown in fig. 8, the corrugated connector for enclosed busbar piping includes an upper connector 1, a bellows assembly 2, a lower connector 3, and an insulating spacer 4. The corrugated pipe assembly 2 is composed of a plurality of sections of radial moving corrugated pipes 21 and a single axial telescopic corrugated pipe 22, and an insulating isolation piece 4 is not arranged in the corrugated pipe assembly 2.
Go up connecting piece 1 structure: the structure is the same as that of the lower connecting piece 3 of the embodiment 2, and the direction is reversed.
The structure of the lower connecting piece 3 is as follows: as shown in fig. 9, the transition cylinder 12 is not welded to the flange 11, the cylindrical surface of the transition cylinder 12 is located in the inner hole of the flange 11, an L-shaped turned edge 121 is arranged at the end of the transition cylinder 12, the L-shaped turned edge 121 is attached to the outer end surface of the flange 11, the L-shaped turned edge 121 is used as a sealing surface when being connected, and the flange 11 can rotate during installation, so that screw holes can be aligned conveniently. The flange 11 is provided with a connecting through hole, the external flange is connected with the through hole on the flange 11 through a bolt, and the rest of the structure of the embodiment is the same as that of the embodiment 2.
As shown in fig. 10, the lower connecting piece may also be a transition cylinder 12 welded to the flange 11, and the transition cylinder 12 welded to the axially-telescopic bellows 22.
The above is only an illustrative embodiment of the present invention, and the structure of any embodiment can be selected for the upper connecting member 1 and the lower connecting member 3, so as to ensure that at least one part of the whole connector is provided with the insulating spacer 4, i.e. the insulating function of the connector is completed; the corrugated pipe assembly 20 consists of a plurality of sections of radial moving corrugated pipes 21 and a single axial telescopic corrugated pipe 22, and the connection sequence can be changed at will; any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.
Claims (10)
1. The utility model provides a corrugated connector for enclosed bus duct, includes connecting piece (1), bellows subassembly (2) and lower connecting piece (3), its characterized in that: the corrugated pipe assembly (2) is formed by connecting a plurality of corrugated pipes, wherein the wave crest of at least one corrugated pipe and the wave crest of an adjacent corrugated pipe are overlapped inside and outside on the same diameter, a gap capable of moving in the radial direction is arranged at the overlapped part of the outer corrugated pipe and the inner corrugated pipe, namely any cross section of the overlapped part, and the radial size of the outer corrugated pipe and the radial size of the inner corrugated pipe form the radial movement amount.
2. A corrugated connector for enclosed busbar piping as claimed in claim 1, wherein: the corrugated pipe assembly (2) consists of radial moving corrugated pipes (21) and axial telescopic corrugated pipes (22), wherein the radial moving corrugated pipes (21) are radial moving waves with at least one wave crest, and the radial movement of each radial moving corrugated pipe (21)Quantity L0Total radial movement amount L = number of radial movement bellows (21) × L0(ii) a The axial expansion bellows (22) is one or more sections.
3. A corrugated connector for enclosed busbar piping as claimed in claim 1, wherein: the corrugated connector is provided with at least one insulating spacer (4); the insulating isolation piece (4) is positioned between the overlapping wave crest interlayers of the corrugated pipe assembly (2), and/or the insulating isolation piece (4) is positioned at the joint of the corrugated pipe assembly (2) and the upper connecting piece (1), and/or the insulating isolation piece (4) is positioned at the joint of the corrugated pipe assembly (2) and the lower connecting piece (3).
4. A corrugated connector for enclosed busbar piping as claimed in claim 1, wherein: the upper connecting piece (1) is composed of a flange (11) and a transition cylinder (12), one end of the transition cylinder (12) is connected with the flange (11), and the other end of the transition cylinder is connected with the corrugated pipe assembly (2).
5. A corrugated connector for enclosed busbar piping as claimed in claim 1, wherein: the lower connecting piece (3) is composed of a flange (11) and a transition cylinder (12), one end of the transition cylinder (12) is connected with the flange (11), and the other end of the transition cylinder is connected with the corrugated pipe assembly (2).
6. A corrugated connector for enclosed busbar piping according to claim 4 or 5, wherein: the end part of the transition cylinder (12) is provided with an L-shaped turned edge (121), the cylindrical surface of the transition cylinder (12) is positioned in an inner hole of the flange (11), and the L-shaped turned edge (121) is attached to the outer end surface of the flange (11).
7. A corrugated connector for enclosed busbar piping as claimed in claim 1, wherein: the upper connecting piece (1) is arranged between the head wave (211) and the second wave of the corrugated pipe assembly (2), and the head wave (211) of the corrugated pipe (21) is flattened into a flat structure.
8. A corrugated connector for enclosed busbar piping as claimed in claim 7, wherein: a waterproof vertical edge (212) with the length of 40-80 mm extends from the top of the head wave (211) along the direction of a bus.
9. A corrugated connector for enclosed busbar piping as claimed in claim 1, wherein: the upper connecting piece (1) is provided with a clamping groove, the clamping groove is connected with a fastening clamp (5) in a clamping mode, and the fastening clamp (5) fastens the upper connecting piece (1) and an external flange.
10. A corrugated connector for enclosed busbar piping as claimed in claim 1, wherein: the upper connecting piece (1) is provided with a connecting through hole, and the external flange is connected with the through hole on the upper connecting piece (1) through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120312319.3U CN214280852U (en) | 2021-02-04 | 2021-02-04 | Corrugated connector for enclosed bus pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120312319.3U CN214280852U (en) | 2021-02-04 | 2021-02-04 | Corrugated connector for enclosed bus pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214280852U true CN214280852U (en) | 2021-09-24 |
Family
ID=77785555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120312319.3U Active CN214280852U (en) | 2021-02-04 | 2021-02-04 | Corrugated connector for enclosed bus pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214280852U (en) |
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2021
- 2021-02-04 CN CN202120312319.3U patent/CN214280852U/en active Active
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