CN213752319U - 750kV converter transformer outlet tube structure - Google Patents
750kV converter transformer outlet tube structure Download PDFInfo
- Publication number
- CN213752319U CN213752319U CN202022247682.XU CN202022247682U CN213752319U CN 213752319 U CN213752319 U CN 213752319U CN 202022247682 U CN202022247682 U CN 202022247682U CN 213752319 U CN213752319 U CN 213752319U
- Authority
- CN
- China
- Prior art keywords
- insulation
- aluminum
- tube
- aluminum tube
- cylindrical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Insulating Of Coils (AREA)
Abstract
The utility model relates to a 750kV converter transformer outlet tube structure, which comprises a first aluminum tube insulation structure, a second aluminum tube insulation structure and a cylindrical insulation splicing structure, wherein the first aluminum tube insulation structure is an S-shaped aluminum tube welding structure with a corrugated paper insulation arranged on the outer surface, one end of the first aluminum tube insulation is connected with a coil, and the other end of the first aluminum tube insulation structure is fixedly connected with the cylindrical insulation splicing structure; the second aluminum pipe insulation is a cylindrical aluminum pipe welding structure with the outer surface provided with crepe paper insulation, one end of the second aluminum pipe insulation is fixedly connected with the pressure equalizing ball, and the shape and the size of the outer diameter of the other end of the second aluminum pipe insulation are matched with the shape and the size of the inner diameter of the cylindrical insulation inserting structure and are inserted into the cylindrical insulation inserting structure to be tightly attached and contacted with the cylindrical insulation inserting structure. The utility model ensures the good electrical performance and mechanical performance of the wire outlet structure and the safe operation of the wire outlet structure; the outlet tube has the advantages of reliable structure, convenient installation, convenient disassembly and transportation of the end structure and capability of ensuring that the size of the outlet structure can meet the transportation requirement.
Description
Technical Field
The utility model belongs to the technical field of the transformer manufacture, especially, relate to a 750kV converter transformer outlet cylinder structure.
Background
The transformer outlet tube structure generally adopts components such as a pressure equalizing tube, a pressure equalizing ball, an insulating paper pulp piece, insulating paper, a paperboard, a stay and the like to form a set of complex insulating system, protects a current-carrying lead of a transformer inside the transformer to finish connection and matching from a coil outlet to a terminal in casing oil, and ensures safe operation of the outlet wire under electric field stress.
The network side 750kV converter transformer is large in capacity and high in voltage level, and in order to meet the requirement of transportation size, the network side 750kV converter transformer adopts an end part wire outlet structure, so that the space from a coil to a sleeve terminal is further compressed, the electrical and mechanical strength of the wire outlet structure cannot be fully guaranteed, and the converter transformer has certain potential safety hazard.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a 750kV converter transformer outlet cylinder structure. The utility model discloses the technical scheme who adopts as follows:
750kV converter transformer outlet tube structure includes: the transformer comprises a first aluminum pipe insulation structure, a second aluminum pipe insulation structure and a cylindrical insulation inserting structure, wherein the first aluminum pipe insulation structure is an S-shaped aluminum pipe welding structure with corrugated paper insulation arranged on the outer surface, the length and the shape of the S-shaped aluminum pipe welding structure are matched with the inner space of the transformer, one insulated end of the first aluminum pipe is connected with a coil, and the other insulated end of the first aluminum pipe is fixedly connected with the cylindrical insulation inserting structure; the second aluminum pipe insulation is a cylindrical aluminum pipe welding structure with corrugated paper insulation arranged on the outer surface, one insulated end of the second aluminum pipe is fixedly connected with the pressure equalizing ball, and the shape and the size of the outer diameter of the other insulated end of the second aluminum pipe are matched with the shape and the size of the inner diameter of the cylindrical insulation inserting structure and are inserted into the cylindrical insulation inserting structure to be tightly attached and contacted with the cylindrical insulation inserting structure; the first aluminum pipe insulation and the second aluminum pipe insulation are fixed into a whole through the cylindrical insulation inserting structure to form a 750kV converter transformer outlet cylinder structure.
The utility model has the advantages that:
1) the utility model discloses a to net side 750kV converter transformer from net side coil to the reliable connection of sleeve pipe pressure-equalizing ball current-carrying lead wire, and compact structure, reach the purpose that can arrange at transformer inner space, show to improve production efficiency.
2) The utility model discloses guaranteed the good electrical property of outlet structure and mechanical properties, guaranteed this outlet structure's safe operation.
3) The utility model discloses a wire outgoing tube structure, the structure is reliable, simple to operate, and end structure convenient to detach transports, guarantees that the size of outlet structure can satisfy the transportation requirement, has extensive application prospect in the net side 750kV converter transformer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are illustrative of some embodiments of the invention, and that those skilled in the art will be able to derive other drawings without inventive step from these drawings, which are within the scope of the present application.
Fig. 1 is a cross-sectional view of an outlet tube structure according to an embodiment of the present invention;
figure 2 is a cross-sectional view of a first aluminum tube insulation of an embodiment of the present invention;
figure 3 is a cross-sectional view of an equalizer ring of an embodiment of the present invention;
figure 4 is a top view of the grading ring of an embodiment of the invention;
fig. 5 is a cross-sectional view of an insulation cylinder of an embodiment of the present invention;
fig. 6 is a left side view of an insulation cylinder of an embodiment of the present invention;
figure 7 is a cross-sectional view of a first aluminum tube insulation assembled insulation canister and grading ring of an embodiment of the present invention;
figure 8 is a cross-sectional view of a second aluminum tube insulation of an embodiment of the invention;
in the figure, 1-first aluminum pipe insulation, 2-second aluminum pipe insulation, 3-insulation cylinder, 4-insulation assembly structure, 5-equalizing ring, 6-grounding seat, 7-internal threaded hole, 8-first internal convex ring, 9-second internal convex ring, 10-first bolt hole, 11-second bolt hole, 12-external convex ring, 13-hexagonal screw, 14-crepe paper insulation, 15-first section aluminum pipe, 16-second section aluminum pipe, 17-third section aluminum pipe, and 18-fourth section aluminum pipe.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, it is a cross-sectional view of an outlet tube structure according to an embodiment of the present invention. A750 kV converter transformer outlet tube structure comprises: the aluminum pipe comprises a first aluminum pipe insulator 1, a second aluminum pipe insulator 2, a cylindrical insulating plug-in structure (composed of an insulating cylinder 3 and a grading ring 5) and an insulating assembly structure 4.
As shown in fig. 2, the cross-sectional view of the first aluminum pipe insulation according to the embodiment of the present invention is shown. The first aluminum pipe insulation 1 is an S-shaped aluminum pipe welding structure with crepe paper insulation arranged on the outer surface, and the length and the shape of the first aluminum pipe insulation 1 are matched with the inner space of the transformer; one end of the first aluminum tube insulator 1 is connected with the coil, and the other end of the first aluminum tube insulator is fixedly connected with the cylindrical insulating inserting structure. The end (the left end in figure 2) of the coil part connected with the first aluminum tube insulation 1 is of a round-head structure of a port, the aluminum tube of the port is made into a tapered thickened tube wall (the left end in figure 2 is provided with shading, the tapered structure is used for matching with a coil forming part) from the normal aluminum tube wall thickness, and the end is ground into a round angle; the internal welding grounding seat 6 is connected with the coil equipotential.
The other end (the right end in fig. 2) of the first aluminum pipe insulation 1 is in a threaded hole structure with increased wall thickness, the wall thickness of the end part of the aluminum pipe is increased, and four internal threaded holes 7 are arranged on the end face for installing the equalizing ring 5.
As shown in fig. 3, the cross-sectional view of the grading ring of the embodiment of the present invention is shown; as shown in fig. 4, it is a top view of the grading ring according to the embodiment of the present invention. The grading ring 5 is made of an aluminum pipe material, the end part of the grading ring is polished smoothly, and 2mm sulfate paper pulp is hung outside the grading ring. A first inner ring 8 is arranged on the inner wall of the grading ring 5, and the inner diameter of the first inner ring 8 is slightly smaller than that of the grading ring 5 (the difference is 2 mm); the purpose of the first inner collar 8 is that the inner diameter of the first inner collar 8 does not hang sulfate pulp, so that the inner diameter of the whole grading ring 5 is a flat structure after 2mm sulfate pulp is hung outside the grading ring 5. A second inner collar 9 is arranged on one side, close to the first aluminum pipe insulation 1, of the first inner collar 8, and the inner diameter of the second inner collar 9 is smaller than that of the first inner collar 8; four first bolt holes 10 are arranged on the end face of the second inner ring 9, and the positions and the sizes of the first bolt holes 10 are matched with the internal thread holes 7.
In order to further improve the insulating performance of the outlet tube structure, an insulating tube 3 is arranged between the second inner convex ring 9 and the first aluminum tube insulator 1. As shown in fig. 5, it is a cross-sectional view of the insulation cylinder of the embodiment of the present invention; as shown in fig. 6, it is a left side view of the insulation tube according to the embodiment of the present invention. The insulating cylinder 3 is of a cylindrical structure and is made of hot-pressing polyester resin plastic, and the outer diameter of the insulating cylinder 3 is slightly smaller than the inner diameter of the first aluminum tube insulator 1; one end of the insulating cylinder 3 is inserted into the first aluminum pipe insulation 1, the other end of the insulating cylinder is provided with an outer convex ring 12, the outer diameter of the outer convex ring 12 is slightly smaller than the inner diameter of the equalizing ring 5, the end face of the outer convex ring 12 is provided with four second bolt holes 11, and the second bolt holes 11 are of a counter bore structure. One end of an insulating cylinder 3 is inserted into the inner diameter of a first aluminum tube insulator 1, a grading ring 5 is installed outside the first aluminum tube insulator 1, a hexagon screw 13 penetrates through a first bolt hole 10 of the grading ring 5 and a second bolt hole 11 of the insulating cylinder 3, and the first aluminum tube insulator 1 and a cylindrical insulating splicing structure (composed of the insulating cylinder 3 and the grading ring 5) are fastened through an internal thread hole 7 of the first aluminum tube insulator 1. As shown in fig. 7, the sectional view of the insulation cylinder and the grading ring assembled on the first aluminum pipe in the insulation mode according to the embodiment of the present invention is shown. After the fastening connection, the corrugated paper is used for wrapping and insulating, and the corrugated paper at the equalizing ring 5 is properly thickened.
As shown in fig. 8, the second aluminum pipe insulation section according to the embodiment of the present invention is shown. The second aluminum pipe insulation 2 is a cylindrical aluminum pipe welding structure with corrugated paper insulation arranged on the outer surface, one end of the second aluminum pipe insulation 2 is fixedly connected with the pressure equalizing ball, and the shape and the size of the outer diameter of the other end of the second aluminum pipe insulation 2 are matched with the shape and the size of the inner diameter of the cylindrical insulation inserting structure and are inserted into the cylindrical insulation inserting structure to be tightly attached and contacted with the cylindrical insulation inserting structure. The second aluminum pipe insulation 2 is formed by welding a first section of aluminum pipe 15, a second section of aluminum pipe 16, a third section of aluminum pipe 17 and a fourth section of aluminum pipe 18, the diameters of the first section of aluminum pipe 15, the third section of aluminum pipe 17 and the fourth section of aluminum pipe 18 are sequentially reduced, the first section of aluminum pipe 15, the third section of aluminum pipe 17 and the fourth section of aluminum pipe 18 are cylindrical, the second section of aluminum pipe 16 is funnel-shaped, and the cross section surface of the second section of aluminum pipe is of a trapezoidal structure; a fourth length of aluminum tube 18 is inserted into the insulating cylinder 3 and the first length of aluminum tube 15 is connected with a pressure equalizing ball. The corrugated paper insulation 14 is arranged outside a first section of aluminum pipe 15, a second section of aluminum pipe 16, a third section of aluminum pipe 17 and a fourth section of aluminum pipe 18, the corrugated paper insulation 14 at one end connected with the pressure equalizing balls is thickest, and the corrugated paper insulation 14 at one end inserted into the cylindrical insulation inserting structure is thinnest; the thickness of the crepe paper insulation 14 is adjusted according to different parts, and is different from 5mm to 75 mm. And inserting the second aluminum tube insulator 2 into the equalizing ring 5 and the insulating cylinder 3, closely attaching and contacting the crepe paper insulator 14 of the second aluminum tube insulator 2 with the inner diameters of the equalizing ring 5 and the insulating cylinder 3, and integrally inserting the first aluminum tube insulator 1 and the second aluminum tube insulator 2 to form a complete 750kV converter transformer outlet cylinder structure.
In order to further enhance the insulating strength of the outlet tube structure, the peripheral surface of the outlet tube structure is provided with an insulating assembly structure 4. The insulating assembly structure 4 adopt 3 layers of formed parts and stay bonding shaping, 3 layers of formed parts are full circle and divide two lamella structure, the stay bonds between the fiber container, plays the fixed action. An insulation assembly is formed by the insulation assembly structure 4 for installation inside the transformer. Insulating supporting bars are arranged among the forming parts of all layers to improve the mechanical strength of the forming parts, and the forming parts can divide oil gaps and increase creepage distance, so that the field intensity of the position is effectively reduced.
The middle position of the insulation assembly structure is designed to be perpendicular to the iron core, so that the insulation assembly structure is conveniently fixed on the clamping piece by adopting a clamping device. The lower part of the insulation assembly structure is connected with the coil part by adopting a slotted stay, and a conical opening is matched and repaired, so that the lower part of the insulation assembly structure and the coil head paper tube piece can be conveniently installed in a plug-in mode.
Finally, it is to be noted that: the above embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, and the scope of the present invention is not limited thereto. Those skilled in the art will understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (8)
1.750kV converter transformer outlet tube structure, its characterized in that includes: the transformer comprises a first aluminum tube insulator (1), a second aluminum tube insulator (2) and a cylindrical insulating splicing structure, wherein the first aluminum tube insulator (1) is an S-shaped aluminum tube welding structure with a corrugated paper insulator arranged on the outer surface, the length and the shape of the first aluminum tube insulator are matched with the inner space of the transformer, one end of the first aluminum tube insulator (1) is connected with a coil, and the other end of the first aluminum tube insulator (1) is fixedly connected with the cylindrical insulating splicing structure; the second aluminum pipe insulation (2) is a cylindrical aluminum pipe welding structure with the outer surface provided with crepe paper insulation, one end of the second aluminum pipe insulation (2) is fixedly connected with the pressure equalizing ball, and the shape and the size of the outer diameter of the other end of the second aluminum pipe insulation (2) are matched with the shape and the size of the inner diameter of the cylindrical insulation inserting structure and inserted into the cylindrical insulation inserting structure to be tightly attached and contacted with the cylindrical insulation inserting structure.
2. The 750kV converter transformer outlet tube structure of claim 1, wherein the cylindrical insulating plug structure comprises: an insulating cylinder (3) and a grading ring (5).
3. The 750kV converter transformer outlet tube structure of claim 2, wherein the end of the first aluminum tube insulator (1) connected with the coil part is in a round-head structure, the aluminum tube of the port is made into a conical thickened tube wall by the normal wall thickness of the aluminum tube, and the end is a round angle; the internal welding grounding seat (6) is connected with the coil in an equipotential manner; the other end of the first aluminum pipe insulator (1) is of a threaded hole structure for increasing the wall thickness, and four internal threaded holes (7) are formed in the end face of the first aluminum pipe insulator and used for installing the equalizing ring (5).
4. The outlet tube structure of the 750kV converter transformer according to claim 3, characterized in that the grading ring (5) is made of aluminum pipe material, the end part is smooth, and 2mm sulfate pulp is hung outside; a first inner convex ring (8) is arranged on the inner wall of the grading ring (5), a second inner convex ring (9) is arranged on one side, close to the first aluminum pipe insulation (1), of the first inner convex ring (8), and the inner diameter of the second inner convex ring (9) is smaller than that of the first inner convex ring (8); four first bolt holes (10) are formed in the end face of the second inner convex ring (9), and the positions and the sizes of the first bolt holes (10) are matched with the inner threaded holes (7).
5. The 750kV converter transformer outlet tube structure as claimed in claim 4, wherein the insulating tube (3) is a cylindrical structure, hot-pressed polyester resin plastic is adopted, and the outer diameter of the insulating tube (3) is slightly smaller than the inner diameter of the first aluminum tube insulator (1); one end of the insulating cylinder (3) is inserted into the first aluminum pipe insulator (1), the other end of the insulating cylinder is provided with an outer convex ring (12), the outer diameter of the outer convex ring (12) is slightly smaller than the inner diameter of the grading ring (5), the end face of the outer convex ring (12) is provided with four second bolt holes (11), and the second bolt holes (11) adopt a counter bore structure; a hexagon screw (13) penetrates through a first bolt hole (10) of the grading ring (5) and a second bolt hole (11) of the insulating cylinder (3) and is screwed through an internal thread hole (7) of the first aluminum pipe insulator (1); after the fastening connection, the corrugated paper is used for wrapping and insulating, and the corrugated paper at the equalizing ring (5) is thickened in an insulating way.
6. The 750kV converter transformer outlet tube structure as claimed in claim 1, wherein the second aluminum tube insulation (2) is formed by welding a first section of aluminum tube (15), a second section of aluminum tube (16), a third section of aluminum tube (17) and a fourth section of aluminum tube (18) which are sequentially reduced in diameter, the first section of aluminum tube (15), the third section of aluminum tube (17) and the fourth section of aluminum tube (18) are cylindrical, the second section of aluminum tube (16) is funnel-shaped, and the cross-sectional view of the second section of aluminum tube is of a trapezoidal structure.
7. The 750kV converter transformer outlet tube structure according to claim 6, wherein corrugated paper insulation (14) is arranged outside the first section of aluminum tube (15), the second section of aluminum tube (16), the third section of aluminum tube (17) and the fourth section of aluminum tube (18).
8. The outlet tube structure of 750kV converter transformer according to claim 1, characterized in that the peripheral surface of the outlet tube structure is provided with an insulating assembly structure (4), the insulating assembly structure (4) is formed by bonding 3 layers of molding members and a stay, the 3 layers of molding members are in a full circle and two-piece structure, and the stay is bonded between the paper tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022247682.XU CN213752319U (en) | 2020-10-10 | 2020-10-10 | 750kV converter transformer outlet tube structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022247682.XU CN213752319U (en) | 2020-10-10 | 2020-10-10 | 750kV converter transformer outlet tube structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213752319U true CN213752319U (en) | 2021-07-20 |
Family
ID=76848331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022247682.XU Active CN213752319U (en) | 2020-10-10 | 2020-10-10 | 750kV converter transformer outlet tube structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213752319U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112259345A (en) * | 2020-10-10 | 2021-01-22 | 山东电力设备有限公司 | 750kV converter transformer outlet tube structure and assembling method |
-
2020
- 2020-10-10 CN CN202022247682.XU patent/CN213752319U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112259345A (en) * | 2020-10-10 | 2021-01-22 | 山东电力设备有限公司 | 750kV converter transformer outlet tube structure and assembling method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213752319U (en) | 750kV converter transformer outlet tube structure | |
| CN101640114B (en) | Extra-high voltage transformer lead shielding device | |
| KR102360977B1 (en) | Bushing for distribution having rod and terminal formed in one unit | |
| WO2018113527A1 (en) | Coupling structure for tail part of valve-side sleeve | |
| CN105870854A (en) | Cable junction box | |
| CN112259345B (en) | 750kV converter transformer outlet tube structure and assembling method | |
| CN209515418U (en) | A kind of power transformer assembled iron nail pressing | |
| CN207993653U (en) | A kind of igniter of universal petrol engine | |
| CN110993283B (en) | Voltage-regulating outgoing line structure and configuration method thereof | |
| CN209418271U (en) | A kind of high-voltage lead of transformer structure | |
| CN208433719U (en) | A kind of electrical threading connector sleeve | |
| CN217215309U (en) | Middle-high voltage connector | |
| US8353104B2 (en) | Manufacturing method of conducting wire terminal | |
| CN201112040Y (en) | Flame-proof type transformer tube | |
| CN204680530U (en) | Transformer low voltage outlet casing tube | |
| CN210015767U (en) | Secondary connection disc and secondary connection terminal thereof | |
| CN219591276U (en) | Combined multi-way switch for vehicle | |
| CN103378392A (en) | Integrated capacitance direct-current blocker | |
| CN207199444U (en) | A kind of bushing shell for transformer of convenient installation | |
| CN216489698U (en) | Lightning arrester of high-low voltage power distribution cabinet | |
| CN215733316U (en) | Waterproof junction box for electromagnetic valve | |
| CN207038795U (en) | A kind of high voltage power supply out splice going splice | |
| CN211556780U (en) | Insulating tube bus branch structure | |
| CN209804907U (en) | separated type pressure-free connection lug | |
| CN211265141U (en) | Glass fiber reinforced plastic type dry-type wall bushing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |