CN111768939A - Basin-type insulator pouring and assembly for high-capacity transmission line - Google Patents
Basin-type insulator pouring and assembly for high-capacity transmission line Download PDFInfo
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- CN111768939A CN111768939A CN202010670593.8A CN202010670593A CN111768939A CN 111768939 A CN111768939 A CN 111768939A CN 202010670593 A CN202010670593 A CN 202010670593A CN 111768939 A CN111768939 A CN 111768939A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
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Abstract
The invention relates to a basin-type insulator pouring and assembly for meeting the requirement of a high-capacity transmission line, which comprises a basin-type insulator, an embedded piece, a first conductor and a second conductor, wherein the embedded piece is poured on a convex surface of the basin-type insulator by adopting a bar material with the same size as the first conductor and the second conductor, one side of the embedded piece is connected with the second conductor by adopting a welding structure, the other side of the embedded piece is provided with a contact base through a standard part, a contact finger is arranged in the contact base, and the first conductor is assembled in the contact base through the action of the contact finger. The invention effectively overcomes the stress on the product caused by factors such as uneven settlement of the foundation and the like, improves the stability of the product, realizes double-channel sealing of the product, can prolong the overhaul period of the product and improve the safety and stability performance of the product, can maximally realize the optimization of the convex electric field of the basin and simultaneously avoid uneven distribution of local heating insulating gas based on the cylindrical structure of the insert, improves the insulating performance of the product, can realize the design of an axial deflection structure of a conductor, and meets the arrangement requirement of GIL complex curve engineering.
Description
Technical Field
The invention belongs to the technical field of high-voltage power transmission and distribution, and particularly relates to a basin-type insulator pouring and assembling assembly capable of meeting the requirement of a high-capacity power transmission line.
Background
With the rapid development of society and industry, the demand of various industries on transmission capacity is also rapidly increased, and the conventional transmission mode gas insulated transmission line bus (GIB) and the novel transmission mode rigid gas insulated transmission line (GIL) are used as a part of the transmission line, so that the rated current value of the transmission line is gradually increased to meet the engineering demand. According to the requirements of GB/T22383 and other industry standards, the product with improved parameters is applied to engineering after being tested and verified by temperature rise, insulation and other related types, and the GIB and the GIL mainly adopt contact seats or bolt assembling structures on two sides of the basin insulator to realize connection with a conductor. If a contact base structure is adopted, in order to ensure the through-flow capacity of a product and realize assembly, the outer diameter of the contact base needs to be about 40mm larger than the outer diameter of the conductor, but a plurality of contact fingers need to be used, the insulation distance of the product is shortened, the product cost is increased, and the insulation performance of the product is reduced; if a bolt assembly structure is adopted, in order to realize assembly, the size of a local conductor is small, so that local heating exceeds the standard and cannot meet the through-flow requirement of a product, meanwhile, the concentration of SF6 at the position is reduced due to local overheating, the insulating property of the product is reduced, meanwhile, silver plating is carried out on an interface joint and a plurality of standard parts, the stability of the product in long-term operation is reduced while the product cost is increased, and the safe and stable operation of a power grid is damaged.
Compared with GIB, the service life of the GIL product is as long as 40 years, the overhaul period is long, and the annual air leakage rate is less than or equal to 0.1 percent, and the single-channel sealing of the traditional product is difficult to meet the high-performance requirement of the GIL product.
Disclosure of Invention
In order to solve the problems, the invention provides a basin-type insulator pouring and assembly for a high-capacity transmission line.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention relates to a basin-type insulator pouring and assembly for meeting the requirement of a high-capacity transmission line, which comprises a basin-type insulator, an embedded piece, a first conductor and a second conductor, wherein the embedded piece is poured on a convex surface of the basin-type insulator by adopting a bar material with the same size as the first conductor and the second conductor, one side of the embedded piece is connected with the second conductor by adopting a welding structure, the other side of the embedded piece is provided with a contact base through a standard part, a contact finger is arranged in the contact base, and the first conductor is assembled in the contact base through the action of the contact finger.
The invention is further improved in that: the insert is of a cylindrical configuration.
The invention is further improved in that: the basin-type insulator pouring and assembly further comprises a metal flange poured on the outer side of the basin-type insulator, a second sealing ring is installed on the basin-type insulator in a groove, and a first sealing ring is installed on the metal flange in a groove.
The invention is further improved in that: the insert is also provided with a stress relief groove.
The invention is further improved in that: the standard includes bolts, washers, and flat pads.
The invention has the beneficial effects that:
(1) the contact base is assembled with the insert through the standard part, and the design of an assembly structure at the position can realize the fixed-point disassembly of a fault unit when a product is installed, breaks down and overhauls, so that the disassembly unit is reduced to the maximum extent; through the optimized design of the contact base structure, the radial deflection of the conductor is realized by matching with the contact fingers on the basis of meeting the through flow of the product, the stress caused by factors such as uneven settlement of the base and the like is effectively overcome, and the stability of the product is improved;
(2) the first sealing ring and the second sealing ring are matched to realize double sealing of the product, so that the annual air leakage rate of the product is less than or equal to 0.1 percent or even lower, the overhaul period of the product can be prolonged, and the safety and stability of the product can be improved;
(3) the stress release groove of the insert can release the stress generated by the product due to expansion with heat and contraction with cold in the operation process, and the axial pressure born by the basin is reduced;
(4) the optimization of the convex surface electric field of the basin can be realized to the maximum extent based on the cylindrical structure of the insert, the insulating property of the product is improved, and in addition, the design of the circular insert structure can meet the high-capacity through-flow requirement of the product, so that the conductor temperature of the whole product is uniform, and the reduction of the insulating property of the product caused by the rarefied insulating gas at the position due to local overheating is avoided;
(5) one side of the insert is connected with the welding structure of the second conductor in a mode of replacing an assembly structure, so that the potential safety hazard caused by looseness and the like of the standard part under the action of long-term alternating electric power is avoided while the product cost is reduced.
Drawings
Fig. 1 is a block diagram of a contact mounting in the background art.
Fig. 2 is a structural view of a bolt assembly in the related art.
Fig. 3 is a block diagram of the basin insulator casting and the left side of the assembly without the first conductor installed in accordance with the present invention.
Fig. 4 is a block diagram of the basin insulator potting and mounting of the first conductor on the left side of the assembly of the present invention.
Fig. 5 is a schematic view of the construction of the right side of the basin insulator placement and assembly of the present invention.
Fig. 6 is an enlarged view of the invention at the location of the sealing ring of fig. 3.
Fig. 7 is an enlarged view of a portion of the contact base of the present invention.
Detailed Description
In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the embodiments of the invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
As shown in fig. 1-7, the invention relates to a basin-type insulator pouring and assembly for high-capacity power transmission lines, which comprises a basin-type insulator 2, an insert 3, a first conductor 8 and a second conductor 9, wherein the insert 3 is poured on a convex surface of the basin-type insulator 2 by using bars with the same size as the first conductor 8 and the second conductor 9, one side of the insert 3 is connected with the second conductor 9 by using a welding structure, the stable operation performance of a product is improved by overcoming the use of a standard component on the basis of avoiding silver plating on a contact surface, reducing the cost of the product and improving the current capacity, the other side of the insert 3 is assembled with a contact base 6 through the standard component 7, the standard component 7 comprises a bolt, a gasket and a flat pad, namely the contact base 6 is assembled with the insert through the bolt, the gasket and the flat pad, a contact finger is installed in the contact base 6, the first conductor 8 is assembled in the contact base 6 through the action of the contact finger, the contact finger is directly put in touching seat 6, and first conductor is installed in touching seat 6, the inside that touches seat 6 has 3-6 deflection angles from inside to outside, and the selection of this angle is set for according to engineering and design needs, and inserts outside pitch arc among the prior art influences the electric field, and consequently the inserts 3 of this application are the cylinder structure, and the pitch arc structure is avoided to the inserts, and establish the coaxial electric field of barrel formation in the inserts 3 outside with the cover, and the barrel forms a sealed space with the inserts, can maximize and optimize basin convex surface electric field, can effectively improve product insulating properties.
Basin type insulator is pour and subassembly still including pouring metal flange 1 in the 2 outsides of basin type insulator forms basin type insulator and external isolation, protects basin type insulator the second sealing washer 5 is installed to the fluting on basin type insulator 2 first sealing washer 4 of fluting installation on the metal flange 1, that is to say that metal flange, basin type insulator all have the groove for the installation sealing washer, realize the leakproofness of product, as shown in figure 6, under the current size of flange external diameter, the design of two pass seal structure reduces the product air leakage rate, improves product safety and stability operation nature still be provided with stress release groove 10 on the inserts 3, the design in inserts stress release groove can effectively overcome and cause the influence to basin axial pressure because of the stress that the product expend with heat and contract with cold produces.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (4)
1. The utility model provides a basin formula insulator that satisfies large capacity transmission line usefulness is pour and subassembly, includes basin formula insulator (2), inserts (3), first conductor (8) and second conductor (9), its characterized in that: inserts (3) adopt and pour with first conductor (8) and second conductor (9) with the rod of size the convex surface of benzvalene form insulator (2), one side of inserts (3) with second conductor (9) adopt welded structure to connect, the opposite side of inserts (3) passes through standard (7) assembly and touches seat (6) install in touching seat (6) and touch the finger touch the effect assembly of finger in seat (6) first conductor (8) through touching.
2. The basin-type insulator pouring and assembling device for the high-capacity transmission lines of claim 1, wherein the basin-type insulator pouring and assembling device comprises: the insert (3) is of a cylindrical structure.
3. The basin-type insulator pouring and assembling device for the high-capacity transmission lines of claim 1, wherein the basin-type insulator pouring and assembling device comprises: basin formula insulator is pour and subassembly still including pouring metal flange (1) in basin formula insulator (2) outside basin formula insulator (2) go up the fluting and install second sealing washer (5) first sealing washer (4) of fluting installation on metal flange (1).
4. The basin-type insulator pouring and assembling device for the high-capacity transmission lines of claim 1, wherein the basin-type insulator pouring and assembling device comprises: the insert (3) is also provided with a stress relief groove (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010670593.8A CN111768939A (en) | 2020-07-13 | 2020-07-13 | Basin-type insulator pouring and assembly for high-capacity transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010670593.8A CN111768939A (en) | 2020-07-13 | 2020-07-13 | Basin-type insulator pouring and assembly for high-capacity transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111768939A true CN111768939A (en) | 2020-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010670593.8A Pending CN111768939A (en) | 2020-07-13 | 2020-07-13 | Basin-type insulator pouring and assembly for high-capacity transmission line |
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| Country | Link |
|---|---|
| CN (1) | CN111768939A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112712942A (en) * | 2020-12-14 | 2021-04-27 | 平高集团有限公司 | Insulator assembly and high-voltage switch equipment using same |
| CN112993845A (en) * | 2021-03-16 | 2021-06-18 | 平高集团有限公司 | Gas-insulated totally-enclosed electrical equipment |
| CN113410013A (en) * | 2021-07-09 | 2021-09-17 | 江苏恒高电气制造有限公司 | Insulator structure of rigid gas insulation transmission line |
-
2020
- 2020-07-13 CN CN202010670593.8A patent/CN111768939A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112712942A (en) * | 2020-12-14 | 2021-04-27 | 平高集团有限公司 | Insulator assembly and high-voltage switch equipment using same |
| CN112712942B (en) * | 2020-12-14 | 2022-07-05 | 平高集团有限公司 | Insulator assembly and high-voltage switch equipment using same |
| CN112993845A (en) * | 2021-03-16 | 2021-06-18 | 平高集团有限公司 | Gas-insulated totally-enclosed electrical equipment |
| CN113410013A (en) * | 2021-07-09 | 2021-09-17 | 江苏恒高电气制造有限公司 | Insulator structure of rigid gas insulation transmission line |
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