CN216648016U

CN216648016U - 110kV double-winding vehicle-mounted transformer lead structure

Info

Publication number: CN216648016U
Application number: CN202122615697.1U
Authority: CN
Inventors: 刘莎; 初萌; 王兴烛
Original assignee: Shandong Power Equipment Co Ltd
Current assignee: Shandong Power Equipment Co Ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-05-31
Anticipated expiration: 2031-10-28

Abstract

The utility model relates to a 110kV double-winding vehicle-mounted transformer lead structure, wherein a high-voltage bushing is arranged in the short axis direction of an oil tank and is connected with the high-voltage bushing through a lead-out cylinder to be led out, and a high-voltage phase line A and a high-voltage phase line B are axially led out and supported and clamped by relatively independent lead clamps to be led to the side of the high-voltage bushing of the oil tank. The high-voltage phase line C phase is led out in a lateral direction close to the outlet cylinder, a clamping and fixing mechanism is arranged in the outlet cylinder, and the high-voltage phase line C phase directly enters the outlet cylinder to be supported and clamped together with the high-voltage phase line A phase and the high-voltage phase line B phase through the clamping and fixing mechanism. The high-voltage bushing is conventionally arranged at the upper part of the corresponding coil, and in order to ensure the insulation distance between the voltage-sharing ball and the oil tank and the clamping piece, a larger oil tank width dimension is needed. The high-voltage bushing is arranged in the short axis direction of the oil tank, so that the width of the oil tank is greatly reduced, the high-voltage phase lines are not interfered with each other, the wiring is more visual, the possibility of creepage is reduced, and the high-voltage bushing has good mechanical strength and reliable electrical strength.

Description

110kV double-winding vehicle-mounted transformer lead structure

Technical Field

The utility model belongs to the technical field of transformer production and manufacturing, and particularly relates to a 110kV double-winding vehicle-mounted transformer lead structure.

Background

Compared with conventional transformer products, the vehicle-mounted transformer is small in size, convenient to move and has outstanding advantages in the aspects of power conservation, rush repair and the like. However, the on-board transformer is limited by installation position and installation space, the position and the form of the sleeve of the on-board transformer are special, and the internal operable space is relatively small. The conventional lead structure is not suitable any more, so that a novel lead structure form suitable for the vehicle-mounted transformer needs to be researched.

Disclosure of Invention

Aiming at the special requirements of the current vehicle-mounted transformer on the lead structure, the utility model aims to design the lead structure of the 110kV double-winding vehicle-mounted transformer. The technical scheme adopted by the utility model is as follows:

a110 kV double-winding vehicle-mounted transformer lead structure is characterized in that a high-voltage bushing is arranged in the short axis direction of an oil tank and is connected with the high-voltage bushing through a lead-out cylinder to be led out, a high-voltage phase line A and a high-voltage phase line B are axially led out, and the high-voltage phase line A and the high-voltage phase line B are supported and clamped by relatively independent lead clamps to be led to the side of the high-voltage bushing of the oil tank. The high-voltage phase line C phase is led out in a lateral direction close to the outlet cylinder, a clamping and fixing mechanism is arranged in the outlet cylinder, and the high-voltage phase line C phase directly enters the outlet cylinder to be supported and clamped together with the high-voltage phase line A phase and the high-voltage phase line B phase through the clamping and fixing mechanism. The high-voltage bushing is conventionally arranged at the upper part of the corresponding coil, and in order to ensure the insulation distance between the voltage-sharing ball and the oil tank and the clamping piece, a larger oil tank width dimension is needed. The high-voltage bushing is arranged in the short axis direction of the oil tank, so that the width of the oil tank can be greatly reduced.

The beneficial effects of the utility model are:

1. the whole high-voltage phase line is arranged on the upper part of the oil tank, and different phase lines are supported and clamped by different conductor clamps. Among this lead wire structure, mutually noninterfere between the high-voltage phase line, the wiring is more directly perceived, has reduced the possibility of creepage, has good mechanical strength and reliable electric strength.

2. The outlet position of the high-voltage phase line is fixed in a triangular mode, so that the high-voltage phase line has stronger stability; the U-shaped clamp is added at the clamping position, so that the smooth clamping of the high-voltage lead is ensured, the positions and the sizes of the fixing plates are uniform, the welding difficulty is reduced, and the working time is saved.

3. The oil tank is close to increasing insulating paper board apart from the switch, makes inside overall structure compacter, and insulating properties improves greatly.

4. On the premise of meeting the requirement of safe and stable operation of the transformer, the size of the oil tank is controlled to the maximum extent, and the transportation size of the transformer is reduced, so that the using amounts of transformer oil, steel and the like are reduced, and the cost is saved. The structure obviously improves the economy and the transportation flexibility of the 110KV double-winding vehicle-mounted 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 specific embodiments of the utility model, and that other drawings within the scope of the present application can be obtained by those skilled in the art without inventive effort.

FIG. 1 is a schematic diagram of a novel lead structure according to an embodiment of the present invention;

FIG. 2 is a schematic view of a clamping fixture in the outlet cylinder according to an embodiment of the utility model;

FIG. 3 is a diagram illustrating a fixing structure of a first wire clamp according to an embodiment of the present invention;

FIG. 4 is a front view of an example of the installation of the novel lead structure of an embodiment of the present invention;

FIG. 5 is a top view of an example of the installation of the novel lead structure of an embodiment of the present invention;

fig. 6 is an enlarged view of the insulating paper board of fig. 5.

The device comprises a first wire clamp 1, a second wire clamp 2, a high-voltage phase line A phase 3, a second wire clamp 4, a high-voltage phase line B phase 5, a third wire clamp 6, a clamping and fixing mechanism 7, a high-voltage phase line C phase 8, an insulating paperboard 9, an outgoing line cylinder 10, a first U-shaped clamp 11, a second U-shaped clamp 12, a third U-shaped clamp 13, a first supporting rod 14, a second supporting rod 15, a third supporting rod 16, a sleeve pressure equalizing ball 17, a switching wire clamp 18 and a fixing plate 18.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

Fig. 1 is a schematic diagram of a novel lead structure according to an embodiment of the present invention. A110 kV double-winding vehicle-mounted transformer lead structure is characterized in that a high-voltage bushing is arranged in the short axis direction of an oil tank and is connected with the high-voltage bushing (an oil-SF 6 bushing) through a lead outlet cylinder 9 to be led out, and a high-voltage phase line A phase 2 and a high-voltage phase line B phase 4 are axially led out and supported and clamped by relatively independent lead clamps to be led to the side of the high-voltage bushing of the oil tank. The high-voltage phase line C phase 7 is laterally led out at the side close to the wire outlet cylinder 9, a clamping and fixing mechanism 6 is arranged in the wire outlet cylinder 9, and the high-voltage phase line C phase 7 directly enters the wire outlet cylinder 9 to be supported and clamped together with the high-voltage phase line A phase 2 and the high-voltage phase line B phase 4 through the clamping and fixing mechanism 6.

Fig. 2 is a schematic view of a clamping and fixing mechanism in the wire outlet cylinder according to an embodiment of the present invention. The clamping and fixing mechanism 6 is a triangular clamping structure, a first supporting rod 13, a second supporting rod 14 and a third supporting rod 15 are connected end to form the triangular supporting structure, a first U-shaped clamp 10, a second U-shaped clamp 11 and a third U-shaped clamp 12 are respectively arranged in the middle positions of the first supporting rod 13, the second supporting rod 14 and the third supporting rod 15, the first U-shaped clamp 10, the second U-shaped clamp 11 and the third U-shaped clamp 12 are of U-shaped structures, an opening is formed in one side of the middle positions of the first supporting rod 13, the second supporting rod 14 and the third supporting rod 15, a high-voltage phase line is located in the opening and clamped through the U-shaped clamps, the first U-shaped clamp 10 clamps a phase 2 of the high-voltage phase line, the second U-shaped clamp 11 clamps a B phase 4 of the high-voltage phase line, and the third U-shaped clamp 12 clamps a C phase 7 of the high-voltage phase line. The triangular end point position of the triangular supporting structure formed by the first supporting rod 13, the second supporting rod 14 and the third supporting rod 15 is directly fastened and connected with the fixing plate in the outgoing line cylinder 9 through bolts. The triangular supporting structure has the advantages of good stability and strong fault-tolerant capability, and can ensure the insulation distance of three high-voltage phase lines in a limited space.

The high-voltage phase conductor A phase 2 is clamped by the first conductor clamp 1 and the second conductor clamp 3, the high-voltage phase conductor B phase 4 is clamped by the third conductor clamp 5, the supporting and clamping positions of the high-voltage phase conductor A phase 2 and the high-voltage phase conductor B phase 4 are not interfered with each other, and the high-voltage phase conductor A phase and the high-voltage phase conductor B phase are led into the outlet cylinder 9 on the side of the high-voltage bushing of the oil tank in a rightward parallel mode; the specific quantity of the first wire clamp 1, the second wire clamp 3 and the third wire clamp 5 is set according to the specific position and the length of the high-voltage phase wire, so that the high-voltage phase wire is firmly supported and clamped. The high-voltage phase line C phase 7 directly enters the outlet cylinder 9, and the high-voltage phase line A phase 2, the high-voltage phase line B phase 4 and the high-voltage phase line C phase 7 are clamped and fixed by the clamping and fixing mechanism 6 and then are connected with the high-voltage sleeve; the oil tank is close to the switch side, and an insulating paper board 8 is added to ensure the insulating strength. The first wire clamp 1, the second wire clamp 3 and the third wire clamp 5 are fixedly connected with the fixing plate 18 on the clamp through the switching wire clamp 17 by using bolts, the first wire clamp 1, the second wire clamp 3, the third wire clamp 5 and the switching wire clamp 17 can be implemented in various structures, the structures are all the prior art, and the wire clamp is suitable for firmly fixing a high-voltage phase wire and is not described in detail herein. Fig. 3 is a schematic view of a fixing structure of a first wire clamp according to an embodiment of the utility model. The second wire guide 3 and the third wire guide 5 are fixed in substantially the same manner as the first wire guide 1.

Fig. 4 is a front view showing an example of mounting of the novel lead structure according to the embodiment of the present invention; fig. 5 is a plan view showing an example of mounting of the novel lead structure according to the embodiment of the present invention; as shown in fig. 6, which is an enlarged view of the insulating paper board of fig. 5. The sleeve equalizing ball 16 is arranged in the wire outlet cylinder 9, and the right part in the wire outlet cylinder 9 is the sleeve equalizing ball 16 for connecting a lead. The right end of the outlet cylinder 9 is fixedly installed with the high-voltage bushing through a connecting flange. The insulating paper board 8 is fixed through a nut base welded on the oil tank and is installed at the position right facing the switch wiring terminal.

Finally, it is to be noted that: the above examples 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 depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.

Claims

The 1.110kV double-winding vehicle-mounted transformer lead structure is characterized in that a high-voltage bushing is arranged in the short axis direction of an oil tank and is connected with the high-voltage bushing through a lead-out cylinder (9) to be led out, a high-voltage phase line A phase (2) and a high-voltage phase line B phase (4) are axially led out, and the high-voltage phase line A phase (2) and the high-voltage phase line B phase (4) are supported and clamped by relatively independent conductor clamps to be led to the side of the high-voltage bushing; the high-voltage phase line C phase (7) is laterally led out near the side of the wire outlet cylinder (9), a clamping and fixing mechanism (6) is arranged in the wire outlet cylinder (9), and the high-voltage phase line C phase (7) directly enters the wire outlet cylinder (9) to be supported and clamped together with the high-voltage phase line A phase (2) and the high-voltage phase line B phase (4) through the clamping and fixing mechanism (6).
2. The 110kV double-winding vehicle-mounted transformer lead structure as claimed in claim 1, wherein the clamping and fixing mechanism (6) is a triangular clamping structure.
3. The 110kV double-winding vehicle-mounted transformer lead structure as claimed in claim 2, wherein the first support rod (13), the second support rod (14) and the third support rod (15) are connected end to form a triangular support structure, a first U-shaped clamp (10), a second U-shaped clamp (11) and a third U-shaped clamp (12) are respectively arranged in the middle positions of the first support rod (13), the second support rod (14) and the third support rod (15), the first U-shaped clamp (10), the second U-shaped clamp (11) and the third U-shaped clamp (12) are of U-shaped structures, an opening is formed in one side of the middle position of the first support rod (13), the second support rod (14) and the third support rod (15), and a high-voltage phase line is located in the opening and fixed and clamped through the U-shaped clamps.
4. A110 kV double-winding vehicle-mounted transformer lead structure according to claim 3, characterized in that a first U-shaped clamp (10) clamps the high-voltage phase A phase (2), a second U-shaped clamp (11) clamps the high-voltage phase B phase (4), and a third U-shaped clamp (12) clamps the high-voltage phase C phase (7).
5. The 110kV double-winding vehicle-mounted transformer lead structure according to claim 4, wherein the triangular end point position of the triangular support structure consisting of the first support rod (13), the second support rod (14) and the third support rod (15) is fixedly connected with the fixing plate in the outgoing line cylinder (9) by using a bolt.
6. The 110kV double-winding vehicle-mounted transformer lead structure according to claim 1, wherein a first lead clamp (1), a second lead clamp (3) and a third lead clamp (5) clamp a high-voltage phase line A phase (2) and a high-voltage phase line B phase (4), the high-voltage phase line A phase (2) and the high-voltage phase line B phase (4) are led into an outlet cylinder (9) on the high-voltage bushing side of the oil tank in parallel to the right, and a high-voltage phase line C phase (7) directly enters the outlet cylinder (9).
7. The 110kV double-winding vehicle-mounted transformer lead structure as claimed in claim 6, wherein the first wire clamp (1), the second wire clamp (3) and the third wire clamp (5) are fixedly connected with a fixing plate (18) on the clamp through a transfer wire clamp (17) by bolts.
8. The 110kV duplex winding vehicle-mounted transformer lead structure as claimed in claim 1, wherein an insulating paper board (8) is additionally arranged near the switch side of the oil tank, and the insulating paper board (8) is fixed through a nut base welded on the oil tank and is arranged at a position opposite to a switch terminal.